diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index 6a4ce51..5c297e0 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -22,6 +22,7 @@
     bignum_core.c
     bignum_mod.c
     bignum_mod_raw.c
+    block_cipher.c
     camellia.c
     ccm.c
     chacha20.c
@@ -296,7 +297,7 @@
 if(USE_SHARED_MBEDTLS_LIBRARY)
     set(CMAKE_LIBRARY_PATH ${CMAKE_CURRENT_BINARY_DIR})
     add_library(${mbedcrypto_target} SHARED ${src_crypto})
-    set_target_properties(${mbedcrypto_target} PROPERTIES VERSION 3.5.0 SOVERSION 15)
+    set_target_properties(${mbedcrypto_target} PROPERTIES VERSION 3.5.1 SOVERSION 15)
     target_link_libraries(${mbedcrypto_target} PUBLIC ${libs})
 
     if(TARGET ${everest_target})
@@ -308,11 +309,11 @@
     endif()
 
     add_library(${mbedx509_target} SHARED ${src_x509})
-    set_target_properties(${mbedx509_target} PROPERTIES VERSION 3.5.0 SOVERSION 6)
+    set_target_properties(${mbedx509_target} PROPERTIES VERSION 3.5.1 SOVERSION 6)
     target_link_libraries(${mbedx509_target} PUBLIC ${libs} ${mbedcrypto_target})
 
     add_library(${mbedtls_target} SHARED ${src_tls})
-    set_target_properties(${mbedtls_target} PROPERTIES VERSION 3.5.0 SOVERSION 20)
+    set_target_properties(${mbedtls_target} PROPERTIES VERSION 3.5.1 SOVERSION 20)
     target_link_libraries(${mbedtls_target} PUBLIC ${libs} ${mbedx509_target})
 endif(USE_SHARED_MBEDTLS_LIBRARY)
 
diff --git a/library/Makefile b/library/Makefile
index 9e2d723..d11a98d 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -91,6 +91,7 @@
 	     bignum_core.o \
 	     bignum_mod.o \
 	     bignum_mod_raw.o \
+	     block_cipher.o \
 	     camellia.o \
 	     ccm.o \
 	     chacha20.o \
diff --git a/library/aes.c b/library/aes.c
index b61d089..f4b9739 100644
--- a/library/aes.c
+++ b/library/aes.c
@@ -2,19 +2,7 @@
  *  FIPS-197 compliant AES implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The AES block cipher was designed by Vincent Rijmen and Joan Daemen.
@@ -35,9 +23,9 @@
 #include "mbedtls/error.h"
 
 #if defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
-#if !((defined(MBEDTLS_ARCH_IS_ARM64) && defined(MBEDTLS_AESCE_C)) || \
-    (defined(MBEDTLS_ARCH_IS_X64)   && defined(MBEDTLS_AESNI_C)) || \
-    (defined(MBEDTLS_ARCH_IS_X86)   && defined(MBEDTLS_AESNI_C)))
+#if !((defined(MBEDTLS_ARCH_IS_ARMV8_A) && defined(MBEDTLS_AESCE_C)) || \
+    (defined(MBEDTLS_ARCH_IS_X64)       && defined(MBEDTLS_AESNI_C)) || \
+    (defined(MBEDTLS_ARCH_IS_X86)       && defined(MBEDTLS_AESNI_C)))
 #error "MBEDTLS_AES_USE_HARDWARE_ONLY defined, but not all prerequisites"
 #endif
 #endif
@@ -66,6 +54,16 @@
 
 #include "mbedtls/platform.h"
 
+/*
+ * This is a convenience shorthand macro to check if we need reverse S-box and
+ * reverse tables. It's private and only defined in this file.
+ */
+#if (!defined(MBEDTLS_AES_DECRYPT_ALT) || \
+    (!defined(MBEDTLS_AES_SETKEY_DEC_ALT) && !defined(MBEDTLS_AES_USE_HARDWARE_ONLY))) && \
+    !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
+#define MBEDTLS_AES_NEED_REVERSE_TABLES
+#endif
+
 #if !defined(MBEDTLS_AES_ALT)
 
 #if defined(MBEDTLS_VIA_PADLOCK_HAVE_CODE)
@@ -401,7 +399,9 @@
      * generate the forward and reverse S-boxes
      */
     FSb[0x00] = 0x63;
+#if defined(MBEDTLS_AES_NEED_REVERSE_TABLES)
     RSb[0x63] = 0x00;
+#endif
 
     for (i = 1; i < 256; i++) {
         x = pow[255 - log[i]];
@@ -413,7 +413,9 @@
         x ^= y ^ 0x63;
 
         FSb[i] = x;
+#if defined(MBEDTLS_AES_NEED_REVERSE_TABLES)
         RSb[x] = (unsigned char) i;
+#endif
     }
 
     /*
@@ -435,10 +437,9 @@
         FT3[i] = ROTL8(FT2[i]);
 #endif /* !MBEDTLS_AES_FEWER_TABLES */
 
+#if defined(MBEDTLS_AES_NEED_REVERSE_TABLES)
         x = RSb[i];
 
-#if !defined(MBEDTLS_AES_DECRYPT_ALT) || \
-        (!defined(MBEDTLS_AES_SETKEY_DEC_ALT) && !defined(MBEDTLS_AES_USE_HARDWARE_ONLY))
         RT0[i] = ((uint32_t) MUL(0x0E, x)) ^
                  ((uint32_t) MUL(0x09, x) <<  8) ^
                  ((uint32_t) MUL(0x0D, x) << 16) ^
@@ -449,8 +450,7 @@
         RT2[i] = ROTL8(RT1[i]);
         RT3[i] = ROTL8(RT2[i]);
 #endif /* !MBEDTLS_AES_FEWER_TABLES */
-#endif \
-        /* !defined(MBEDTLS_AES_DECRYPT_ALT) || (!defined(MBEDTLS_AES_SETKEY_DEC_ALT) && !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)) */
+#endif /* MBEDTLS_AES_NEED_REVERSE_TABLES */
     }
 }
 
@@ -682,7 +682,7 @@
 /*
  * AES key schedule (decryption)
  */
-#if !defined(MBEDTLS_AES_SETKEY_DEC_ALT)
+#if !defined(MBEDTLS_AES_SETKEY_DEC_ALT) && !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 int mbedtls_aes_setkey_dec(mbedtls_aes_context *ctx, const unsigned char *key,
                            unsigned int keybits)
 {
@@ -751,7 +751,7 @@
 
     return ret;
 }
-#endif /* !MBEDTLS_AES_SETKEY_DEC_ALT */
+#endif /* !MBEDTLS_AES_SETKEY_DEC_ALT && !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */
 
 #if defined(MBEDTLS_CIPHER_MODE_XTS)
 static int mbedtls_aes_xts_decode_keys(const unsigned char *key,
@@ -940,7 +940,7 @@
 /*
  * AES-ECB block decryption
  */
-#if !defined(MBEDTLS_AES_DECRYPT_ALT)
+#if !defined(MBEDTLS_AES_DECRYPT_ALT) && !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 int mbedtls_internal_aes_decrypt(mbedtls_aes_context *ctx,
                                  const unsigned char input[16],
                                  unsigned char output[16])
@@ -997,7 +997,7 @@
 
     return 0;
 }
-#endif /* !MBEDTLS_AES_DECRYPT_ALT */
+#endif /* !MBEDTLS_AES_DECRYPT_ALT && !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */
 
 /* VIA Padlock and our intrinsics-based implementation of AESNI require
  * the round keys to be aligned on a 16-byte boundary. We take care of this
@@ -1052,13 +1052,15 @@
 #endif
 
 #if !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
-    if (mode == MBEDTLS_AES_ENCRYPT) {
-        return mbedtls_internal_aes_encrypt(ctx, input, output);
-    } else {
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
+    if (mode == MBEDTLS_AES_DECRYPT) {
         return mbedtls_internal_aes_decrypt(ctx, input, output);
-    }
+    } else
 #endif
-
+    {
+        return mbedtls_internal_aes_encrypt(ctx, input, output);
+    }
+#endif /* !MBEDTLS_AES_USE_HARDWARE_ONLY */
 }
 
 #if defined(MBEDTLS_CIPHER_MODE_CBC)
@@ -1484,6 +1486,7 @@
  *
  * http://csrc.nist.gov/archive/aes/rijndael/rijndael-vals.zip
  */
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 static const unsigned char aes_test_ecb_dec[][16] =
 {
     { 0x44, 0x41, 0x6A, 0xC2, 0xD1, 0xF5, 0x3C, 0x58,
@@ -1495,6 +1498,7 @@
       0x1F, 0x6F, 0x56, 0x58, 0x5D, 0x8A, 0x4A, 0xDE }
 #endif
 };
+#endif
 
 static const unsigned char aes_test_ecb_enc[][16] =
 {
@@ -1876,7 +1880,7 @@
      */
     {
         static const int num_tests =
-            sizeof(aes_test_ecb_dec) / sizeof(*aes_test_ecb_dec);
+            sizeof(aes_test_ecb_enc) / sizeof(*aes_test_ecb_enc);
 
         for (i = 0; i < num_tests << 1; i++) {
             u = i >> 1;
@@ -1887,13 +1891,24 @@
                 mbedtls_printf("  AES-ECB-%3u (%s): ", keybits,
                                (mode == MBEDTLS_AES_DECRYPT) ? "dec" : "enc");
             }
+#if defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
+            if (mode == MBEDTLS_AES_DECRYPT) {
+                if (verbose != 0) {
+                    mbedtls_printf("skipped\n");
+                }
+                continue;
+            }
+#endif
 
             memset(buf, 0, 16);
 
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
             if (mode == MBEDTLS_AES_DECRYPT) {
                 ret = mbedtls_aes_setkey_dec(&ctx, key, keybits);
                 aes_tests = aes_test_ecb_dec[u];
-            } else {
+            } else
+#endif
+            {
                 ret = mbedtls_aes_setkey_enc(&ctx, key, keybits);
                 aes_tests = aes_test_ecb_enc[u];
             }
diff --git a/library/aesce.c b/library/aesce.c
index 21ec47d..2879be5 100644
--- a/library/aesce.c
+++ b/library/aesce.c
@@ -2,23 +2,20 @@
  *  Armv8-A Cryptographic Extension support functions for Aarch64
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
-#if defined(__aarch64__) && !defined(__ARM_FEATURE_CRYPTO) && \
-    defined(__clang__) && __clang_major__ >= 4
+#if defined(__clang__) &&  (__clang_major__ >= 4)
+
+/* Ideally, we would simply use MBEDTLS_ARCH_IS_ARMV8_A in the following #if,
+ * but that is defined by build_info.h, and we need this block to happen first. */
+#if defined(__ARM_ARCH)
+#if __ARM_ARCH >= 8
+#define MBEDTLS_AESCE_ARCH_IS_ARMV8_A
+#endif
+#endif
+
+#if defined(MBEDTLS_AESCE_ARCH_IS_ARMV8_A) && !defined(__ARM_FEATURE_CRYPTO)
 /* TODO: Re-consider above after https://reviews.llvm.org/D131064 merged.
  *
  * The intrinsic declaration are guarded by predefined ACLE macros in clang:
@@ -39,6 +36,8 @@
 #define MBEDTLS_ENABLE_ARM_CRYPTO_EXTENSIONS_COMPILER_FLAG
 #endif
 
+#endif /* defined(__clang__) &&  (__clang_major__ >= 4) */
+
 #include <string.h>
 #include "common.h"
 
@@ -46,12 +45,14 @@
 
 #include "aesce.h"
 
-#if defined(MBEDTLS_ARCH_IS_ARM64)
+#if defined(MBEDTLS_ARCH_IS_ARMV8_A) && defined(__ARM_NEON)
 
 /* Compiler version checks. */
 #if defined(__clang__)
-#   if __clang_major__ < 4
-#       error "Minimum version of Clang for MBEDTLS_AESCE_C is 4.0."
+#   if defined(MBEDTLS_ARCH_IS_ARM32) && (__clang_major__ < 11)
+#       error "Minimum version of Clang for MBEDTLS_AESCE_C on 32-bit Arm or Thumb is 11.0."
+#   elif defined(MBEDTLS_ARCH_IS_ARM64) && (__clang_major__ < 4)
+#       error "Minimum version of Clang for MBEDTLS_AESCE_C on aarch64 is 4.0."
 #   endif
 #elif defined(__GNUC__)
 #   if __GNUC__ < 6
@@ -64,6 +65,15 @@
 #   if _MSC_VER < 1929
 #       error "Minimum version of MSVC for MBEDTLS_AESCE_C is 2019 version 16.11.2."
 #   endif
+#elif defined(__ARMCC_VERSION)
+#    if defined(MBEDTLS_ARCH_IS_ARM32) && (__ARMCC_VERSION < 6200002)
+/* TODO: We haven't verified armclang for 32-bit Arm/Thumb prior to 6.20.
+ * If someone verified that, please update this and document of
+ * `MBEDTLS_AESCE_C` in `mbedtls_config.h`. */
+#         error "Minimum version of armclang for MBEDTLS_AESCE_C on 32-bit Arm is 6.20."
+#    elif defined(MBEDTLS_ARCH_IS_ARM64) && (__ARMCC_VERSION < 6060000)
+#         error "Minimum version of armclang for MBEDTLS_AESCE_C on aarch64 is 6.6."
+#    endif
 #endif
 
 #if !defined(MBEDTLS_HAVE_NEON_INTRINSICS)
@@ -94,8 +104,19 @@
 
 #if defined(__linux__) && !defined(MBEDTLS_AES_USE_HARDWARE_ONLY)
 
-#include <asm/hwcap.h>
 #include <sys/auxv.h>
+#if !defined(HWCAP_NEON)
+#define HWCAP_NEON  (1 << 12)
+#endif
+#if !defined(HWCAP2_AES)
+#define HWCAP2_AES  (1 << 0)
+#endif
+#if !defined(HWCAP_AES)
+#define HWCAP_AES   (1 << 3)
+#endif
+#if !defined(HWCAP_ASIMD)
+#define HWCAP_ASIMD (1 << 1)
+#endif
 
 signed char mbedtls_aesce_has_support_result = -1;
 
@@ -112,6 +133,16 @@
      * once, but that is harmless.
      */
     if (mbedtls_aesce_has_support_result == -1) {
+#if defined(MBEDTLS_ARCH_IS_ARM32)
+        unsigned long auxval  = getauxval(AT_HWCAP);
+        unsigned long auxval2 = getauxval(AT_HWCAP2);
+        if (((auxval  & HWCAP_NEON) == HWCAP_NEON) &&
+            ((auxval2 & HWCAP2_AES) == HWCAP2_AES)) {
+            mbedtls_aesce_has_support_result = 1;
+        } else {
+            mbedtls_aesce_has_support_result = 0;
+        }
+#else
         unsigned long auxval = getauxval(AT_HWCAP);
         if ((auxval & (HWCAP_ASIMD | HWCAP_AES)) ==
             (HWCAP_ASIMD | HWCAP_AES)) {
@@ -119,6 +150,7 @@
         } else {
             mbedtls_aesce_has_support_result = 0;
         }
+#endif
     }
     return mbedtls_aesce_has_support_result;
 }
@@ -197,6 +229,7 @@
 /* Two rounds of AESCE decryption */
 #define AESCE_DECRYPT_ROUND_X2        AESCE_DECRYPT_ROUND; AESCE_DECRYPT_ROUND
 
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 static uint8x16_t aesce_decrypt_block(uint8x16_t block,
                                       unsigned char *keys,
                                       int rounds)
@@ -228,6 +261,7 @@
 
     return block;
 }
+#endif
 
 /*
  * AES-ECB block en(de)cryption
@@ -240,10 +274,15 @@
     uint8x16_t block = vld1q_u8(&input[0]);
     unsigned char *keys = (unsigned char *) (ctx->buf + ctx->rk_offset);
 
-    if (mode == MBEDTLS_AES_ENCRYPT) {
-        block = aesce_encrypt_block(block, keys, ctx->nr);
-    } else {
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
+    if (mode == MBEDTLS_AES_DECRYPT) {
         block = aesce_decrypt_block(block, keys, ctx->nr);
+    } else
+#else
+    (void) mode;
+#endif
+    {
+        block = aesce_encrypt_block(block, keys, ctx->nr);
     }
     vst1q_u8(&output[0], block);
 
@@ -253,6 +292,7 @@
 /*
  * Compute decryption round keys from encryption round keys
  */
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 void mbedtls_aesce_inverse_key(unsigned char *invkey,
                                const unsigned char *fwdkey,
                                int nr)
@@ -267,6 +307,7 @@
     vst1q_u8(invkey + i * 16, vld1q_u8(fwdkey + j * 16));
 
 }
+#endif
 
 static inline uint32_t aes_rot_word(uint32_t word)
 {
@@ -310,7 +351,7 @@
          rki + key_len_in_words < rko_end;
          rki += key_len_in_words) {
 
-        size_t iteration = (rki - (uint32_t *) rk) / key_len_in_words;
+        size_t iteration = (size_t) (rki - (uint32_t *) rk) / key_len_in_words;
         uint32_t *rko;
         rko = rki + key_len_in_words;
         rko[0] = aes_rot_word(aes_sub_word(rki[key_len_in_words - 1]));
@@ -363,24 +404,91 @@
 
 #if defined(MBEDTLS_GCM_C)
 
-#if !defined(__clang__) && defined(__GNUC__) && __GNUC__ == 5
-/* Some intrinsics are not available for GCC 5.X. */
-#define vreinterpretq_p64_u8(a) ((poly64x2_t) a)
-#define vreinterpretq_u8_p128(a) ((uint8x16_t) a)
-static inline poly64_t vget_low_p64(poly64x2_t __a)
+#if defined(MBEDTLS_ARCH_IS_ARM32)
+
+#if defined(__clang__)
+/* On clang for A32/T32, work around some missing intrinsics and types which are listed in
+ * [ACLE](https://arm-software.github.io/acle/neon_intrinsics/advsimd.html#polynomial-1)
+ * These are only required for GCM.
+ */
+#define vreinterpretq_u64_p64(a) ((uint64x2_t) a)
+
+typedef uint8x16_t poly128_t;
+
+static inline poly128_t vmull_p64(poly64_t a, poly64_t b)
 {
-    uint64x2_t tmp = (uint64x2_t) (__a);
-    uint64x1_t lo = vcreate_u64(vgetq_lane_u64(tmp, 0));
-    return (poly64_t) (lo);
+    poly128_t r;
+    asm ("vmull.p64 %[r], %[a], %[b]" : [r] "=w" (r) : [a] "w" (a), [b] "w" (b) :);
+    return r;
 }
-#endif /* !__clang__ && __GNUC__ && __GNUC__ == 5*/
+
+/* This is set to cause some more missing intrinsics to be defined below */
+#define COMMON_MISSING_INTRINSICS
+
+static inline poly128_t vmull_high_p64(poly64x2_t a, poly64x2_t b)
+{
+    return vmull_p64((poly64_t) (vget_high_u64((uint64x2_t) a)),
+                     (poly64_t) (vget_high_u64((uint64x2_t) b)));
+}
+
+#endif /* defined(__clang__) */
+
+static inline uint8x16_t vrbitq_u8(uint8x16_t x)
+{
+    /* There is no vrbitq_u8 instruction in A32/T32, so provide
+     * an equivalent non-Neon implementation. Reverse bit order in each
+     * byte with 4x rbit, rev. */
+    asm ("ldm  %[p], { r2-r5 } \n\t"
+         "rbit r2, r2          \n\t"
+         "rev  r2, r2          \n\t"
+         "rbit r3, r3          \n\t"
+         "rev  r3, r3          \n\t"
+         "rbit r4, r4          \n\t"
+         "rev  r4, r4          \n\t"
+         "rbit r5, r5          \n\t"
+         "rev  r5, r5          \n\t"
+         "stm  %[p], { r2-r5 } \n\t"
+         :
+         /* Output: 16 bytes of memory pointed to by &x */
+         "+m" (*(uint8_t(*)[16]) &x)
+         :
+         [p] "r" (&x)
+         :
+         "r2", "r3", "r4", "r5"
+         );
+    return x;
+}
+
+#endif /* defined(MBEDTLS_ARCH_IS_ARM32) */
+
+#if defined(MBEDTLS_COMPILER_IS_GCC) && __GNUC__ == 5
+/* Some intrinsics are not available for GCC 5.X. */
+#define COMMON_MISSING_INTRINSICS
+#endif /* MBEDTLS_COMPILER_IS_GCC && __GNUC__ == 5 */
+
+
+#if defined(COMMON_MISSING_INTRINSICS)
+
+/* Missing intrinsics common to both GCC 5, and Clang on 32-bit */
+
+#define vreinterpretq_p64_u8(a)  ((poly64x2_t) a)
+#define vreinterpretq_u8_p128(a) ((uint8x16_t) a)
+
+static inline poly64x1_t vget_low_p64(poly64x2_t a)
+{
+    uint64x1_t r = vget_low_u64(vreinterpretq_u64_p64(a));
+    return (poly64x1_t) r;
+
+}
+
+#endif /* COMMON_MISSING_INTRINSICS */
 
 /* vmull_p64/vmull_high_p64 wrappers.
  *
  * Older compilers miss some intrinsic functions for `poly*_t`. We use
  * uint8x16_t and uint8x16x3_t as input/output parameters.
  */
-#if defined(__GNUC__) && !defined(__clang__)
+#if defined(MBEDTLS_COMPILER_IS_GCC)
 /* GCC reports incompatible type error without cast. GCC think poly64_t and
  * poly64x1_t are different, that is different with MSVC and Clang. */
 #define MBEDTLS_VMULL_P64(a, b) vmull_p64((poly64_t) a, (poly64_t) b)
@@ -389,14 +497,15 @@
  * error with/without cast. And I think poly64_t and poly64x1_t are same, no
  * cast for clang also. */
 #define MBEDTLS_VMULL_P64(a, b) vmull_p64(a, b)
-#endif
+#endif /* MBEDTLS_COMPILER_IS_GCC */
+
 static inline uint8x16_t pmull_low(uint8x16_t a, uint8x16_t b)
 {
 
     return vreinterpretq_u8_p128(
         MBEDTLS_VMULL_P64(
-            vget_low_p64(vreinterpretq_p64_u8(a)),
-            vget_low_p64(vreinterpretq_p64_u8(b))
+            (poly64_t) vget_low_p64(vreinterpretq_p64_u8(a)),
+            (poly64_t) vget_low_p64(vreinterpretq_p64_u8(b))
             ));
 }
 
@@ -465,7 +574,7 @@
     /* use 'asm' as an optimisation barrier to prevent loading MODULO from
      * memory. It is for GNUC compatible compilers.
      */
-    asm ("" : "+w" (r));
+    asm volatile ("" : "+w" (r));
 #endif
     uint8x16_t const MODULO = vreinterpretq_u8_u64(vshrq_n_u64(r, 64 - 8));
     uint8x16_t h, m, l; /* input high/middle/low 128b */
@@ -508,6 +617,6 @@
 #undef MBEDTLS_POP_TARGET_PRAGMA
 #endif
 
-#endif /* MBEDTLS_ARCH_IS_ARM64 */
+#endif /* MBEDTLS_ARCH_IS_ARMV8_A */
 
 #endif /* MBEDTLS_AESCE_C */
diff --git a/library/aesce.h b/library/aesce.h
index d24c423..cf12d7f 100644
--- a/library/aesce.h
+++ b/library/aesce.h
@@ -2,26 +2,14 @@
  * \file aesce.h
  *
  * \brief Support hardware AES acceleration on Armv8-A processors with
- *        the Armv8-A Cryptographic Extension in AArch64 execution state.
+ *        the Armv8-A Cryptographic Extension.
  *
  * \warning These functions are only for internal use by other library
  *          functions; you must not call them directly.
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef MBEDTLS_AESCE_H
 #define MBEDTLS_AESCE_H
@@ -31,7 +19,7 @@
 #include "mbedtls/aes.h"
 
 
-#if defined(MBEDTLS_AESCE_C) && defined(MBEDTLS_ARCH_IS_ARM64)
+#if defined(MBEDTLS_AESCE_C) && defined(MBEDTLS_ARCH_IS_ARMV8_A) && defined(__ARM_NEON)
 
 #define MBEDTLS_AESCE_HAVE_CODE
 
@@ -99,6 +87,7 @@
                             const unsigned char b[16]);
 
 
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 /**
  * \brief           Internal round key inversion. This function computes
  *                  decryption round keys from the encryption round keys.
@@ -110,6 +99,7 @@
 void mbedtls_aesce_inverse_key(unsigned char *invkey,
                                const unsigned char *fwdkey,
                                int nr);
+#endif /* !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */
 
 /**
  * \brief           Internal key expansion for encryption
@@ -128,6 +118,12 @@
 }
 #endif
 
-#endif /* MBEDTLS_AESCE_C && MBEDTLS_ARCH_IS_ARM64 */
+#else
+
+#if defined(MBEDTLS_AES_USE_HARDWARE_ONLY) && defined(MBEDTLS_ARCH_IS_ARMV8_A)
+#error "AES hardware acceleration not supported on this platform"
+#endif
+
+#endif /* MBEDTLS_AESCE_C && MBEDTLS_ARCH_IS_ARMV8_A && __ARM_NEON */
 
 #endif /* MBEDTLS_AESCE_H */
diff --git a/library/aesni.c b/library/aesni.c
index 864d0d6..9da9f1b 100644
--- a/library/aesni.c
+++ b/library/aesni.c
@@ -2,19 +2,7 @@
  *  AES-NI support functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
@@ -106,14 +94,19 @@
     ++rk;
     --nr;
 
-    if (mode == 0) {
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
+    if (mode == MBEDTLS_AES_DECRYPT) {
         while (nr != 0) {
             state = _mm_aesdec_si128(state, *rk);
             ++rk;
             --nr;
         }
         state = _mm_aesdeclast_si128(state, *rk);
-    } else {
+    } else
+#else
+    (void) mode;
+#endif
+    {
         while (nr != 0) {
             state = _mm_aesenc_si128(state, *rk);
             ++rk;
@@ -230,6 +223,7 @@
 /*
  * Compute decryption round keys from encryption round keys
  */
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 void mbedtls_aesni_inverse_key(unsigned char *invkey,
                                const unsigned char *fwdkey, int nr)
 {
@@ -242,6 +236,7 @@
     }
     *ik = *fk;
 }
+#endif
 
 /*
  * Key expansion, 128-bit case
@@ -477,6 +472,7 @@
          "jnz       1b              \n\t"
          "movdqu    (%1), %%xmm1    \n\t" // load round key
          AESENCLAST(xmm1_xmm0)            // last round
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
          "jmp       3f              \n\t"
 
          "2:                        \n\t" // decryption loop
@@ -487,6 +483,7 @@
          "jnz       2b              \n\t"
          "movdqu    (%1), %%xmm1    \n\t" // load round key
          AESDECLAST(xmm1_xmm0)            // last round
+#endif
 
          "3:                        \n\t"
          "movdqu    %%xmm0, (%4)    \n\t" // export output
@@ -613,6 +610,7 @@
 /*
  * Compute decryption round keys from encryption round keys
  */
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 void mbedtls_aesni_inverse_key(unsigned char *invkey,
                                const unsigned char *fwdkey, int nr)
 {
@@ -632,6 +630,7 @@
 
     memcpy(ik, fk, 16);
 }
+#endif
 
 /*
  * Key expansion, 128-bit case
diff --git a/library/aesni.h b/library/aesni.h
index f007735..59e27af 100644
--- a/library/aesni.h
+++ b/library/aesni.h
@@ -8,19 +8,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef MBEDTLS_AESNI_H
 #define MBEDTLS_AESNI_H
@@ -131,6 +119,7 @@
                             const unsigned char a[16],
                             const unsigned char b[16]);
 
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 /**
  * \brief           Internal round key inversion. This function computes
  *                  decryption round keys from the encryption round keys.
@@ -145,6 +134,7 @@
 void mbedtls_aesni_inverse_key(unsigned char *invkey,
                                const unsigned char *fwdkey,
                                int nr);
+#endif /* !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */
 
 /**
  * \brief           Internal key expansion for encryption
@@ -167,6 +157,6 @@
 #endif
 
 #endif /* MBEDTLS_AESNI_HAVE_CODE */
-#endif  /* MBEDTLS_AESNI_C */
+#endif  /* MBEDTLS_AESNI_C && (MBEDTLS_ARCH_IS_X64 || MBEDTLS_ARCH_IS_X86) */
 
 #endif /* MBEDTLS_AESNI_H */
diff --git a/library/alignment.h b/library/alignment.h
index d8c4fb3..4aab8e0 100644
--- a/library/alignment.h
+++ b/library/alignment.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_LIBRARY_ALIGNMENT_H
diff --git a/library/aria.c b/library/aria.c
index 0980362..ba12578 100644
--- a/library/aria.c
+++ b/library/aria.c
@@ -2,19 +2,7 @@
  *  ARIA implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
@@ -425,6 +413,7 @@
 /*
  * Set decryption key
  */
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 int mbedtls_aria_setkey_dec(mbedtls_aria_context *ctx,
                             const unsigned char *key, unsigned int keybits)
 {
@@ -454,6 +443,7 @@
 
     return 0;
 }
+#endif /* !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */
 
 /*
  * Encrypt a block
@@ -884,12 +874,18 @@
         /* test ECB decryption */
         if (verbose) {
             mbedtls_printf("  ARIA-ECB-%d (dec): ", 128 + 64 * i);
+#if defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
+            mbedtls_printf("skipped\n");
+#endif
         }
+
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
         mbedtls_aria_setkey_dec(&ctx, aria_test1_ecb_key, 128 + 64 * i);
         mbedtls_aria_crypt_ecb(&ctx, aria_test1_ecb_ct[i], blk);
         ARIA_SELF_TEST_ASSERT(
             memcmp(blk, aria_test1_ecb_pt, MBEDTLS_ARIA_BLOCKSIZE)
             != 0);
+#endif
     }
     if (verbose) {
         mbedtls_printf("\n");
diff --git a/library/asn1parse.c b/library/asn1parse.c
index abdd0b1..c02b233 100644
--- a/library/asn1parse.c
+++ b/library/asn1parse.c
@@ -2,19 +2,7 @@
  *  Generic ASN.1 parsing
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/asn1write.c b/library/asn1write.c
index 2e9b98a..114091d 100644
--- a/library/asn1write.c
+++ b/library/asn1write.c
@@ -2,19 +2,7 @@
  * ASN.1 buffer writing functionality
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/base64.c b/library/base64.c
index fa22e53..9677dee 100644
--- a/library/base64.c
+++ b/library/base64.c
@@ -2,19 +2,7 @@
  *  RFC 1521 base64 encoding/decoding
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include <limits.h>
@@ -128,7 +116,7 @@
         *p++ = '=';
     }
 
-    *olen = p - dst;
+    *olen = (size_t) (p - dst);
     *p = 0;
 
     return 0;
@@ -237,7 +225,7 @@
         }
     }
 
-    *olen = p - dst;
+    *olen = (size_t) (p - dst);
 
     return 0;
 }
diff --git a/library/base64_internal.h b/library/base64_internal.h
index f9f56d7..a09bd23 100644
--- a/library/base64_internal.h
+++ b/library/base64_internal.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_BASE64_INTERNAL
diff --git a/library/bignum.c b/library/bignum.c
index 795952c..1869137 100644
--- a/library/bignum.c
+++ b/library/bignum.c
@@ -2,19 +2,7 @@
  *  Multi-precision integer library
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
@@ -714,7 +702,7 @@
     }
 
     *p++ = '\0';
-    *olen = p - buf;
+    *olen = (size_t) (p - buf);
 
 cleanup:
 
diff --git a/library/bignum_core.c b/library/bignum_core.c
index dbf6d1d..dfed60d 100644
--- a/library/bignum_core.c
+++ b/library/bignum_core.c
@@ -2,19 +2,7 @@
  *  Core bignum functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/bignum_core.h b/library/bignum_core.h
index e5500f1..b56be0a 100644
--- a/library/bignum_core.h
+++ b/library/bignum_core.h
@@ -62,19 +62,7 @@
 
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_BIGNUM_CORE_H
diff --git a/library/bignum_mod.c b/library/bignum_mod.c
index 2f0e9ed..dfd332a 100644
--- a/library/bignum_mod.c
+++ b/library/bignum_mod.c
@@ -2,19 +2,7 @@
  *  Modular bignum functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/bignum_mod.h b/library/bignum_mod.h
index 39e8fd2..963d888 100644
--- a/library/bignum_mod.h
+++ b/library/bignum_mod.h
@@ -63,19 +63,7 @@
 
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_BIGNUM_MOD_H
diff --git a/library/bignum_mod_raw.c b/library/bignum_mod_raw.c
index 5ee1b19..5343bc6 100644
--- a/library/bignum_mod_raw.c
+++ b/library/bignum_mod_raw.c
@@ -2,19 +2,7 @@
  *  Low-level modular bignum functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/bignum_mod_raw.h b/library/bignum_mod_raw.h
index c5ff937..7bb4ca3 100644
--- a/library/bignum_mod_raw.h
+++ b/library/bignum_mod_raw.h
@@ -60,19 +60,7 @@
 
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_BIGNUM_MOD_RAW_H
diff --git a/library/bignum_mod_raw_invasive.h b/library/bignum_mod_raw_invasive.h
index ead8394..94a0d06 100644
--- a/library/bignum_mod_raw_invasive.h
+++ b/library/bignum_mod_raw_invasive.h
@@ -6,19 +6,7 @@
  */
 /**
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_BIGNUM_MOD_RAW_INVASIVE_H
diff --git a/library/block_cipher.c b/library/block_cipher.c
new file mode 100644
index 0000000..1118d3a
--- /dev/null
+++ b/library/block_cipher.c
@@ -0,0 +1,116 @@
+/**
+ * \file block_cipher.c
+ *
+ * \brief Lightweight abstraction layer for block ciphers with 128 bit blocks,
+ * for use by the GCM and CCM modules.
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+#include "common.h"
+
+#include "block_cipher_internal.h"
+
+#if defined(MBEDTLS_BLOCK_CIPHER_C)
+
+void mbedtls_block_cipher_free(mbedtls_block_cipher_context_t *ctx)
+{
+    switch (ctx->id) {
+#if defined(MBEDTLS_AES_C)
+        case MBEDTLS_BLOCK_CIPHER_ID_AES:
+            mbedtls_aes_free(&ctx->ctx.aes);
+            break;
+#endif
+#if defined(MBEDTLS_ARIA_C)
+        case MBEDTLS_BLOCK_CIPHER_ID_ARIA:
+            mbedtls_aria_free(&ctx->ctx.aria);
+            break;
+#endif
+#if defined(MBEDTLS_CAMELLIA_C)
+        case MBEDTLS_BLOCK_CIPHER_ID_CAMELLIA:
+            mbedtls_camellia_free(&ctx->ctx.camellia);
+            break;
+#endif
+        default:
+            break;
+    }
+    ctx->id = MBEDTLS_BLOCK_CIPHER_ID_NONE;
+}
+
+int mbedtls_block_cipher_setup(mbedtls_block_cipher_context_t *ctx,
+                               mbedtls_cipher_id_t cipher_id)
+{
+    switch (cipher_id) {
+#if defined(MBEDTLS_AES_C)
+        case MBEDTLS_CIPHER_ID_AES:
+            ctx->id = MBEDTLS_BLOCK_CIPHER_ID_AES;
+            mbedtls_aes_init(&ctx->ctx.aes);
+            return 0;
+#endif
+#if defined(MBEDTLS_ARIA_C)
+        case MBEDTLS_CIPHER_ID_ARIA:
+            ctx->id = MBEDTLS_BLOCK_CIPHER_ID_ARIA;
+            mbedtls_aria_init(&ctx->ctx.aria);
+            return 0;
+#endif
+#if defined(MBEDTLS_CAMELLIA_C)
+        case MBEDTLS_CIPHER_ID_CAMELLIA:
+            ctx->id = MBEDTLS_BLOCK_CIPHER_ID_CAMELLIA;
+            mbedtls_camellia_init(&ctx->ctx.camellia);
+            return 0;
+#endif
+        default:
+            return MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA;
+    }
+}
+
+int mbedtls_block_cipher_setkey(mbedtls_block_cipher_context_t *ctx,
+                                const unsigned char *key,
+                                unsigned key_bitlen)
+{
+    switch (ctx->id) {
+#if defined(MBEDTLS_AES_C)
+        case MBEDTLS_BLOCK_CIPHER_ID_AES:
+            return mbedtls_aes_setkey_enc(&ctx->ctx.aes, key, key_bitlen);
+#endif
+#if defined(MBEDTLS_ARIA_C)
+        case MBEDTLS_BLOCK_CIPHER_ID_ARIA:
+            return mbedtls_aria_setkey_enc(&ctx->ctx.aria, key, key_bitlen);
+#endif
+#if defined(MBEDTLS_CAMELLIA_C)
+        case MBEDTLS_BLOCK_CIPHER_ID_CAMELLIA:
+            return mbedtls_camellia_setkey_enc(&ctx->ctx.camellia, key, key_bitlen);
+#endif
+        default:
+            return MBEDTLS_ERR_CIPHER_INVALID_CONTEXT;
+    }
+}
+
+int mbedtls_block_cipher_encrypt(mbedtls_block_cipher_context_t *ctx,
+                                 const unsigned char input[16],
+                                 unsigned char output[16])
+{
+    switch (ctx->id) {
+#if defined(MBEDTLS_AES_C)
+        case MBEDTLS_BLOCK_CIPHER_ID_AES:
+            return mbedtls_aes_crypt_ecb(&ctx->ctx.aes, MBEDTLS_AES_ENCRYPT,
+                                         input, output);
+#endif
+#if defined(MBEDTLS_ARIA_C)
+        case MBEDTLS_BLOCK_CIPHER_ID_ARIA:
+            return mbedtls_aria_crypt_ecb(&ctx->ctx.aria, input, output);
+#endif
+#if defined(MBEDTLS_CAMELLIA_C)
+        case MBEDTLS_BLOCK_CIPHER_ID_CAMELLIA:
+            return mbedtls_camellia_crypt_ecb(&ctx->ctx.camellia,
+                                              MBEDTLS_CAMELLIA_ENCRYPT,
+                                              input, output);
+#endif
+        default:
+            return MBEDTLS_ERR_CIPHER_INVALID_CONTEXT;
+    }
+}
+
+#endif /* MBEDTLS_BLOCK_CIPHER_C */
diff --git a/library/block_cipher_internal.h b/library/block_cipher_internal.h
new file mode 100644
index 0000000..c57338b
--- /dev/null
+++ b/library/block_cipher_internal.h
@@ -0,0 +1,99 @@
+/**
+ * \file block_cipher_internal.h
+ *
+ * \brief Lightweight abstraction layer for block ciphers with 128 bit blocks,
+ * for use by the GCM and CCM modules.
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+#ifndef MBEDTLS_BLOCK_CIPHER_INTERNAL_H
+#define MBEDTLS_BLOCK_CIPHER_INTERNAL_H
+
+#include "mbedtls/build_info.h"
+
+#include "mbedtls/cipher.h"
+
+#include "mbedtls/block_cipher.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \brief           Initialize the context.
+ *                  This must be the first API call before using the context.
+ *
+ * \param ctx       The context to initialize.
+ */
+static inline void mbedtls_block_cipher_init(mbedtls_block_cipher_context_t *ctx)
+{
+    memset(ctx, 0, sizeof(*ctx));
+}
+
+/**
+ * \brief           Set the block cipher to use with this context.
+ *                  This must be called after mbedtls_block_cipher_init().
+ *
+ * \param ctx       The context to set up.
+ * \param cipher_id The identifier of the cipher to use.
+ *                  This must be either AES, ARIA or Camellia.
+ *                  Warning: this is a ::mbedtls_cipher_id_t,
+ *                  not a ::mbedtls_block_cipher_id_t!
+ *
+ * \retval          \c 0 on success.
+ * \retval          #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if \p cipher_id was
+ *                  invalid.
+ */
+int mbedtls_block_cipher_setup(mbedtls_block_cipher_context_t *ctx,
+                               mbedtls_cipher_id_t cipher_id);
+
+/**
+ * \brief           Set the key into the context.
+ *
+ * \param ctx       The context to configure.
+ * \param key       The buffer holding the key material.
+ * \param key_bitlen    The size of the key in bits.
+ *
+ * \retval          \c 0 on success.
+ * \retval          #MBEDTLS_ERR_CIPHER_INVALID_CONTEXT if the context was not
+ *                  properly set up before calling this function.
+ * \retval          One of #MBEDTLS_ERR_AES_INVALID_KEY_LENGTH,
+ *                  #MBEDTLS_ERR_ARIA_BAD_INPUT_DATA,
+ *                  #MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA if \p key_bitlen is
+ *                  invalid.
+ */
+int mbedtls_block_cipher_setkey(mbedtls_block_cipher_context_t *ctx,
+                                const unsigned char *key,
+                                unsigned key_bitlen);
+
+/**
+ * \brief           Encrypt one block (16 bytes) with the configured key.
+ *
+ * \param ctx       The context holding the key.
+ * \param input     The buffer holding the input block. Must be 16 bytes.
+ * \param output    The buffer to which the output block will be written.
+ *                  Must be writable and 16 bytes long.
+ *                  This must either not overlap with \p input, or be equal.
+ *
+ * \retval          \c 0 on success.
+ * \retval          #MBEDTLS_ERR_CIPHER_INVALID_CONTEXT if the context was not
+ *                  properly set up before calling this function.
+ * \retval          Another negative value if encryption failed.
+ */
+int mbedtls_block_cipher_encrypt(mbedtls_block_cipher_context_t *ctx,
+                                 const unsigned char input[16],
+                                 unsigned char output[16]);
+/**
+ * \brief           Clear the context.
+ *
+ * \param ctx       The context to clear.
+ */
+void mbedtls_block_cipher_free(mbedtls_block_cipher_context_t *ctx);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* MBEDTLS_BLOCK_CIPHER_INTERNAL_H */
diff --git a/library/bn_mul.h b/library/bn_mul.h
index ab1a66a..0738469 100644
--- a/library/bn_mul.h
+++ b/library/bn_mul.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *      Multiply source vector [s] with b, add result
diff --git a/library/camellia.c b/library/camellia.c
index 409727d..b1c0a08 100644
--- a/library/camellia.c
+++ b/library/camellia.c
@@ -2,19 +2,7 @@
  *  Camellia implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The Camellia block cipher was designed by NTT and Mitsubishi Electric
@@ -411,6 +399,7 @@
 /*
  * Camellia key schedule (decryption)
  */
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 int mbedtls_camellia_setkey_dec(mbedtls_camellia_context *ctx,
                                 const unsigned char *key,
                                 unsigned int keybits)
@@ -456,6 +445,7 @@
 
     return ret;
 }
+#endif /* !MBEDTLS_BLOCK_CIPHER_NO_DECRYPT */
 
 /*
  * Camellia-ECB block encryption/decryption
@@ -900,14 +890,26 @@
                            (v == MBEDTLS_CAMELLIA_DECRYPT) ? "dec" : "enc");
         }
 
+#if defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
+        if (v == MBEDTLS_CAMELLIA_DECRYPT) {
+            if (verbose != 0) {
+                mbedtls_printf("skipped\n");
+            }
+            continue;
+        }
+#endif
+
         for (i = 0; i < CAMELLIA_TESTS_ECB; i++) {
             memcpy(key, camellia_test_ecb_key[u][i], 16 + 8 * u);
 
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
             if (v == MBEDTLS_CAMELLIA_DECRYPT) {
                 mbedtls_camellia_setkey_dec(&ctx, key, 128 + u * 64);
                 memcpy(src, camellia_test_ecb_cipher[u][i], 16);
                 memcpy(dst, camellia_test_ecb_plain[i], 16);
-            } else { /* MBEDTLS_CAMELLIA_ENCRYPT */
+            } else
+#endif
+            { /* MBEDTLS_CAMELLIA_ENCRYPT */
                 mbedtls_camellia_setkey_enc(&ctx, key, 128 + u * 64);
                 memcpy(src, camellia_test_ecb_plain[i], 16);
                 memcpy(dst, camellia_test_ecb_cipher[u][i], 16);
diff --git a/library/ccm.c b/library/ccm.c
index 237ef9f..6700dc7 100644
--- a/library/ccm.c
+++ b/library/ccm.c
@@ -2,19 +2,7 @@
  *  NIST SP800-38C compliant CCM implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
@@ -35,6 +23,10 @@
 #include "mbedtls/error.h"
 #include "mbedtls/constant_time.h"
 
+#if !defined(MBEDTLS_CIPHER_C)
+#include "block_cipher_internal.h"
+#endif
+
 #include <string.h>
 
 #if defined(MBEDTLS_PLATFORM_C)
@@ -63,6 +55,8 @@
                        unsigned int keybits)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+
+#if defined(MBEDTLS_CIPHER_C)
     const mbedtls_cipher_info_t *cipher_info;
 
     cipher_info = mbedtls_cipher_info_from_values(cipher, keybits,
@@ -85,6 +79,17 @@
                                      MBEDTLS_ENCRYPT)) != 0) {
         return ret;
     }
+#else
+    mbedtls_block_cipher_free(&ctx->block_cipher_ctx);
+
+    if ((ret = mbedtls_block_cipher_setup(&ctx->block_cipher_ctx, cipher)) != 0) {
+        return MBEDTLS_ERR_CCM_BAD_INPUT;
+    }
+
+    if ((ret = mbedtls_block_cipher_setkey(&ctx->block_cipher_ctx, key, keybits)) != 0) {
+        return MBEDTLS_ERR_CCM_BAD_INPUT;
+    }
+#endif
 
     return 0;
 }
@@ -97,7 +102,11 @@
     if (ctx == NULL) {
         return;
     }
+#if defined(MBEDTLS_CIPHER_C)
     mbedtls_cipher_free(&ctx->cipher_ctx);
+#else
+    mbedtls_block_cipher_free(&ctx->block_cipher_ctx);
+#endif
     mbedtls_platform_zeroize(ctx, sizeof(mbedtls_ccm_context));
 }
 
@@ -116,12 +125,16 @@
                              const unsigned char *input,
                              unsigned char *output)
 {
-    size_t olen = 0;
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char tmp_buf[16] = { 0 };
 
-    if ((ret = mbedtls_cipher_update(&ctx->cipher_ctx, ctx->ctr, 16, tmp_buf,
-                                     &olen)) != 0) {
+#if defined(MBEDTLS_CIPHER_C)
+    size_t olen = 0;
+    ret = mbedtls_cipher_update(&ctx->cipher_ctx, ctx->ctr, 16, tmp_buf, &olen);
+#else
+    ret = mbedtls_block_cipher_encrypt(&ctx->block_cipher_ctx, ctx->ctr, tmp_buf);
+#endif
+    if (ret != 0) {
         ctx->state |= CCM_STATE__ERROR;
         mbedtls_platform_zeroize(tmp_buf, sizeof(tmp_buf));
         return ret;
@@ -144,7 +157,10 @@
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char i;
-    size_t len_left, olen;
+    size_t len_left;
+#if defined(MBEDTLS_CIPHER_C)
+    size_t olen;
+#endif
 
     /* length calculation can be done only after both
      * mbedtls_ccm_starts() and mbedtls_ccm_set_lengths() have been executed
@@ -190,7 +206,12 @@
     }
 
     /* Start CBC-MAC with first block*/
-    if ((ret = mbedtls_cipher_update(&ctx->cipher_ctx, ctx->y, 16, ctx->y, &olen)) != 0) {
+#if defined(MBEDTLS_CIPHER_C)
+    ret = mbedtls_cipher_update(&ctx->cipher_ctx, ctx->y, 16, ctx->y, &olen);
+#else
+    ret = mbedtls_block_cipher_encrypt(&ctx->block_cipher_ctx, ctx->y, ctx->y);
+#endif
+    if (ret != 0) {
         ctx->state |= CCM_STATE__ERROR;
         return ret;
     }
@@ -270,7 +291,10 @@
                           size_t add_len)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    size_t olen, use_len, offset;
+    size_t use_len, offset;
+#if defined(MBEDTLS_CIPHER_C)
+    size_t olen;
+#endif
 
     if (ctx->state & CCM_STATE__ERROR) {
         return MBEDTLS_ERR_CCM_BAD_INPUT;
@@ -310,8 +334,12 @@
             add += use_len;
 
             if (use_len + offset == 16 || ctx->processed == ctx->add_len) {
-                if ((ret =
-                         mbedtls_cipher_update(&ctx->cipher_ctx, ctx->y, 16, ctx->y, &olen)) != 0) {
+#if defined(MBEDTLS_CIPHER_C)
+                ret = mbedtls_cipher_update(&ctx->cipher_ctx, ctx->y, 16, ctx->y, &olen);
+#else
+                ret = mbedtls_block_cipher_encrypt(&ctx->block_cipher_ctx, ctx->y, ctx->y);
+#endif
+                if (ret != 0) {
                     ctx->state |= CCM_STATE__ERROR;
                     return ret;
                 }
@@ -334,7 +362,10 @@
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char i;
-    size_t use_len, offset, olen;
+    size_t use_len, offset;
+#if defined(MBEDTLS_CIPHER_C)
+    size_t olen;
+#endif
 
     unsigned char local_output[16];
 
@@ -372,8 +403,12 @@
             mbedtls_xor(ctx->y + offset, ctx->y + offset, input, use_len);
 
             if (use_len + offset == 16 || ctx->processed == ctx->plaintext_len) {
-                if ((ret =
-                         mbedtls_cipher_update(&ctx->cipher_ctx, ctx->y, 16, ctx->y, &olen)) != 0) {
+#if defined(MBEDTLS_CIPHER_C)
+                ret = mbedtls_cipher_update(&ctx->cipher_ctx, ctx->y, 16, ctx->y, &olen);
+#else
+                ret = mbedtls_block_cipher_encrypt(&ctx->block_cipher_ctx, ctx->y, ctx->y);
+#endif
+                if (ret != 0) {
                     ctx->state |= CCM_STATE__ERROR;
                     goto exit;
                 }
@@ -403,8 +438,12 @@
             memcpy(output, local_output, use_len);
 
             if (use_len + offset == 16 || ctx->processed == ctx->plaintext_len) {
-                if ((ret =
-                         mbedtls_cipher_update(&ctx->cipher_ctx, ctx->y, 16, ctx->y, &olen)) != 0) {
+#if defined(MBEDTLS_CIPHER_C)
+                ret = mbedtls_cipher_update(&ctx->cipher_ctx, ctx->y, 16, ctx->y, &olen);
+#else
+                ret = mbedtls_block_cipher_encrypt(&ctx->block_cipher_ctx, ctx->y, ctx->y);
+#endif
+                if (ret != 0) {
                     ctx->state |= CCM_STATE__ERROR;
                     goto exit;
                 }
diff --git a/library/chacha20.c b/library/chacha20.c
index cbb01f4..acaae5b 100644
--- a/library/chacha20.c
+++ b/library/chacha20.c
@@ -6,19 +6,7 @@
  * \author Daniel King <damaki.gh@gmail.com>
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/chachapoly.c b/library/chachapoly.c
index aebc646..a1314ea 100644
--- a/library/chachapoly.c
+++ b/library/chachapoly.c
@@ -4,19 +4,7 @@
  * \brief ChaCha20-Poly1305 AEAD construction based on RFC 7539.
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #include "common.h"
 
diff --git a/library/check_crypto_config.h b/library/check_crypto_config.h
index b7d87fe..6469e9f 100644
--- a/library/check_crypto_config.h
+++ b/library/check_crypto_config.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
diff --git a/library/cipher.c b/library/cipher.c
index 67ed0e3..0683677 100644
--- a/library/cipher.c
+++ b/library/cipher.c
@@ -6,19 +6,7 @@
  * \author Adriaan de Jong <dejong@fox-it.com>
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -322,6 +310,12 @@
     if (ctx->cipher_info == NULL) {
         return MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA;
     }
+#if defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
+    if (MBEDTLS_MODE_ECB == ((mbedtls_cipher_mode_t) ctx->cipher_info->mode) &&
+        MBEDTLS_DECRYPT == operation) {
+        return MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE;
+    }
+#endif
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO) && !defined(MBEDTLS_DEPRECATED_REMOVED)
     if (ctx->psa_enabled == 1) {
@@ -389,6 +383,7 @@
     ctx->key_bitlen = key_bitlen;
     ctx->operation = operation;
 
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     /*
      * For OFB, CFB and CTR mode always use the encryption key schedule
      */
@@ -404,6 +399,12 @@
         return mbedtls_cipher_get_base(ctx->cipher_info)->setkey_dec_func(ctx->cipher_ctx, key,
                                                                           ctx->key_bitlen);
     }
+#else
+    if (operation == MBEDTLS_ENCRYPT || operation == MBEDTLS_DECRYPT) {
+        return mbedtls_cipher_get_base(ctx->cipher_info)->setkey_enc_func(ctx->cipher_ctx, key,
+                                                                          ctx->key_bitlen);
+    }
+#endif
 
     return MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA;
 }
diff --git a/library/cipher_wrap.c b/library/cipher_wrap.c
index d977e47..c173899 100644
--- a/library/cipher_wrap.c
+++ b/library/cipher_wrap.c
@@ -6,19 +6,7 @@
  * \author Adriaan de Jong <dejong@fox-it.com>
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -238,11 +226,13 @@
 }
 #endif /* MBEDTLS_CIPHER_MODE_XTS */
 
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 static int aes_setkey_dec_wrap(void *ctx, const unsigned char *key,
                                unsigned int key_bitlen)
 {
     return mbedtls_aes_setkey_dec((mbedtls_aes_context *) ctx, key, key_bitlen);
 }
+#endif
 
 static int aes_setkey_enc_wrap(void *ctx, const unsigned char *key,
                                unsigned int key_bitlen)
@@ -291,7 +281,9 @@
     NULL,
 #endif
     aes_setkey_enc_wrap,
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     aes_setkey_dec_wrap,
+#endif
     aes_ctx_alloc,
     aes_ctx_free
 };
@@ -603,7 +595,9 @@
 #endif
 #if defined(MBEDTLS_GCM_C)
     gcm_aes_setkey_wrap,
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     gcm_aes_setkey_wrap,
+#endif
     gcm_ctx_alloc,
     gcm_ctx_free,
 #else
@@ -685,7 +679,9 @@
 #endif
 #if defined(MBEDTLS_CCM_C)
     ccm_aes_setkey_wrap,
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     ccm_aes_setkey_wrap,
+#endif
     ccm_ctx_alloc,
     ccm_ctx_free,
 #else
@@ -811,11 +807,13 @@
 }
 #endif /* MBEDTLS_CIPHER_MODE_CTR */
 
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 static int camellia_setkey_dec_wrap(void *ctx, const unsigned char *key,
                                     unsigned int key_bitlen)
 {
     return mbedtls_camellia_setkey_dec((mbedtls_camellia_context *) ctx, key, key_bitlen);
 }
+#endif
 
 static int camellia_setkey_enc_wrap(void *ctx, const unsigned char *key,
                                     unsigned int key_bitlen)
@@ -865,7 +863,9 @@
     NULL,
 #endif
     camellia_setkey_enc_wrap,
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     camellia_setkey_dec_wrap,
+#endif
     camellia_ctx_alloc,
     camellia_ctx_free
 };
@@ -1038,7 +1038,9 @@
     NULL,
 #endif
     gcm_camellia_setkey_wrap,
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     gcm_camellia_setkey_wrap,
+#endif
     gcm_ctx_alloc,
     gcm_ctx_free,
 };
@@ -1107,7 +1109,9 @@
     NULL,
 #endif
     ccm_camellia_setkey_wrap,
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     ccm_camellia_setkey_wrap,
+#endif
     ccm_ctx_alloc,
     ccm_ctx_free,
 };
@@ -1221,11 +1225,13 @@
 }
 #endif /* MBEDTLS_CIPHER_MODE_CTR */
 
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
 static int aria_setkey_dec_wrap(void *ctx, const unsigned char *key,
                                 unsigned int key_bitlen)
 {
     return mbedtls_aria_setkey_dec((mbedtls_aria_context *) ctx, key, key_bitlen);
 }
+#endif
 
 static int aria_setkey_enc_wrap(void *ctx, const unsigned char *key,
                                 unsigned int key_bitlen)
@@ -1275,7 +1281,9 @@
     NULL,
 #endif
     aria_setkey_enc_wrap,
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     aria_setkey_dec_wrap,
+#endif
     aria_ctx_alloc,
     aria_ctx_free
 };
@@ -1448,7 +1456,9 @@
     NULL,
 #endif
     gcm_aria_setkey_wrap,
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     gcm_aria_setkey_wrap,
+#endif
     gcm_ctx_alloc,
     gcm_ctx_free,
 };
@@ -1517,7 +1527,9 @@
     NULL,
 #endif
     ccm_aria_setkey_wrap,
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     ccm_aria_setkey_wrap,
+#endif
     ccm_ctx_alloc,
     ccm_ctx_free,
 };
@@ -1937,7 +1949,9 @@
     chacha20_stream_wrap,
 #endif
     chacha20_setkey_wrap,
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     chacha20_setkey_wrap,
+#endif
     chacha20_ctx_alloc,
     chacha20_ctx_free
 };
@@ -2012,7 +2026,9 @@
     NULL,
 #endif
     chachapoly_setkey_wrap,
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     chachapoly_setkey_wrap,
+#endif
     chachapoly_ctx_alloc,
     chachapoly_ctx_free
 };
@@ -2080,7 +2096,9 @@
     null_crypt_stream,
 #endif
     null_setkey,
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     null_setkey,
+#endif
     null_ctx_alloc,
     null_ctx_free
 };
diff --git a/library/cipher_wrap.h b/library/cipher_wrap.h
index 85a011c..f229151 100644
--- a/library/cipher_wrap.h
+++ b/library/cipher_wrap.h
@@ -7,19 +7,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef MBEDTLS_CIPHER_WRAP_H
 #define MBEDTLS_CIPHER_WRAP_H
@@ -137,9 +125,11 @@
     int (*setkey_enc_func)(void *ctx, const unsigned char *key,
                            unsigned int key_bitlen);
 
+#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
     /** Set key for decryption purposes */
     int (*setkey_dec_func)(void *ctx, const unsigned char *key,
                            unsigned int key_bitlen);
+#endif
 
     /** Allocate a new context */
     void * (*ctx_alloc_func)(void);
diff --git a/library/cmac.c b/library/cmac.c
index c079686..f40cae2 100644
--- a/library/cmac.c
+++ b/library/cmac.c
@@ -4,19 +4,7 @@
  * \brief NIST SP800-38B compliant CMAC implementation for AES and 3DES
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
diff --git a/library/common.h b/library/common.h
index 690276e..55bea8c 100644
--- a/library/common.h
+++ b/library/common.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_LIBRARY_COMMON_H
@@ -39,6 +27,15 @@
 #define MBEDTLS_HAVE_NEON_INTRINSICS
 #endif
 
+
+#if defined(__GNUC__) && !defined(__ARMCC_VERSION) && !defined(__clang__) \
+    && !defined(__llvm__) && !defined(__INTEL_COMPILER)
+/* Defined if the compiler really is gcc and not clang, etc */
+#define MBEDTLS_COMPILER_IS_GCC
+#define MBEDTLS_GCC_VERSION \
+    (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
+#endif
+
 /** Helper to define a function as static except when building invasive tests.
  *
  * If a function is only used inside its own source file and should be
@@ -185,7 +182,9 @@
 {
     size_t i = 0;
 #if defined(MBEDTLS_EFFICIENT_UNALIGNED_ACCESS)
-#if defined(MBEDTLS_HAVE_NEON_INTRINSICS)
+#if defined(MBEDTLS_HAVE_NEON_INTRINSICS) && \
+    (!defined(MBEDTLS_COMPILER_IS_GCC) || \
+    (defined(MBEDTLS_COMPILER_IS_GCC) && MBEDTLS_GCC_VERSION >= 70300))
     for (; (i + 16) <= n; i += 16) {
         uint8x16_t v1 = vld1q_u8(a + i);
         uint8x16_t v2 = vld1q_u8(b + i);
@@ -310,22 +309,34 @@
 #define MBEDTLS_STATIC_ASSERT(expr, msg)
 #endif
 
-/* Define compiler branch hints */
 #if defined(__has_builtin)
-#if __has_builtin(__builtin_expect)
+#define MBEDTLS_HAS_BUILTIN(x) __has_builtin(x)
+#else
+#define MBEDTLS_HAS_BUILTIN(x) 0
+#endif
+
+/* Define compiler branch hints */
+#if MBEDTLS_HAS_BUILTIN(__builtin_expect)
 #define MBEDTLS_LIKELY(x)       __builtin_expect(!!(x), 1)
 #define MBEDTLS_UNLIKELY(x)     __builtin_expect(!!(x), 0)
-#endif
-#endif
-#if !defined(MBEDTLS_LIKELY)
+#else
 #define MBEDTLS_LIKELY(x)       x
 #define MBEDTLS_UNLIKELY(x)     x
 #endif
 
-#if defined(__GNUC__) && !defined(__ARMCC_VERSION) && !defined(__clang__) \
-    && !defined(__llvm__) && !defined(__INTEL_COMPILER)
-/* Defined if the compiler really is gcc and not clang, etc */
-#define MBEDTLS_COMPILER_IS_GCC
+/* MBEDTLS_ASSUME may be used to provide additional information to the compiler
+ * which can result in smaller code-size. */
+#if MBEDTLS_HAS_BUILTIN(__builtin_assume)
+/* clang provides __builtin_assume */
+#define MBEDTLS_ASSUME(x)       __builtin_assume(x)
+#elif MBEDTLS_HAS_BUILTIN(__builtin_unreachable)
+/* gcc and IAR can use __builtin_unreachable */
+#define MBEDTLS_ASSUME(x)       do { if (!(x)) __builtin_unreachable(); } while (0)
+#elif defined(_MSC_VER)
+/* Supported by MSVC since VS 2005 */
+#define MBEDTLS_ASSUME(x)       __assume(x)
+#else
+#define MBEDTLS_ASSUME(x)       do { } while (0)
 #endif
 
 /* For gcc -Os, override with -O2 for a given function.
diff --git a/library/constant_time.c b/library/constant_time.c
index 8b41aed..c7077c3 100644
--- a/library/constant_time.c
+++ b/library/constant_time.c
@@ -2,19 +2,7 @@
  *  Constant-time functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
diff --git a/library/constant_time_impl.h b/library/constant_time_impl.h
index 7759ac3..2a4574b 100644
--- a/library/constant_time_impl.h
+++ b/library/constant_time_impl.h
@@ -2,19 +2,7 @@
  *  Constant-time functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_CONSTANT_TIME_IMPL_H
@@ -43,7 +31,7 @@
  * Disable -Wredundant-decls so that gcc does not warn about this. This is re-enabled
  * at the bottom of this file.
  */
-#ifdef __GNUC__
+#if defined(MBEDTLS_COMPILER_IS_GCC) && (__GNUC__ > 4)
     #pragma GCC diagnostic push
     #pragma GCC diagnostic ignored "-Wredundant-decls"
 #endif
@@ -132,10 +120,12 @@
  * On Thumb 2 and Arm, both compilers are happy with the "s" suffix,
  * although we don't actually care about setting the flags.
  *
- * For gcc, restore divided syntax afterwards - otherwise old versions of gcc
- * seem to apply unified syntax globally, which breaks other asm code.
+ * For old versions of gcc (see #8516 for details), restore divided
+ * syntax afterwards - otherwise old versions of gcc seem to apply
+ * unified syntax globally, which breaks other asm code.
  */
-#if !defined(__clang__)
+#if defined(MBEDTLS_COMPILER_IS_GCC) && defined(__thumb__) && !defined(__thumb2__) && \
+    (__GNUC__ < 11) && !defined(__ARM_ARCH_2__)
 #define RESTORE_ASM_SYNTAX  ".syntax divided                      \n\t"
 #else
 #define RESTORE_ASM_SYNTAX
@@ -558,7 +548,7 @@
     return (mbedtls_ct_condition_t) (~x);
 }
 
-#ifdef __GNUC__
+#if defined(MBEDTLS_COMPILER_IS_GCC) && (__GNUC__ > 4)
 /* Restore warnings for -Wredundant-decls on gcc */
     #pragma GCC diagnostic pop
 #endif
diff --git a/library/constant_time_internal.h b/library/constant_time_internal.h
index cc26edc..61a5c6d 100644
--- a/library/constant_time_internal.h
+++ b/library/constant_time_internal.h
@@ -2,19 +2,7 @@
  *  Constant-time functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_CONSTANT_TIME_INTERNAL_H
diff --git a/library/ctr_drbg.c b/library/ctr_drbg.c
index fdd753d..cf3816e 100644
--- a/library/ctr_drbg.c
+++ b/library/ctr_drbg.c
@@ -2,19 +2,7 @@
  *  CTR_DRBG implementation based on AES-256 (NIST SP 800-90)
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The NIST SP 800-90 DRBGs are described in the following publication.
diff --git a/library/debug.c b/library/debug.c
index 0983cb0..a9d58e5 100644
--- a/library/debug.c
+++ b/library/debug.c
@@ -2,19 +2,7 @@
  *  Debugging routines
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -378,7 +366,7 @@
     start = text;
     for (cur = text; *cur != '\0'; cur++) {
         if (*cur == '\n') {
-            size_t len = cur - start + 1;
+            size_t len = (size_t) (cur - start) + 1;
             if (len > DEBUG_BUF_SIZE - 1) {
                 len = DEBUG_BUF_SIZE - 1;
             }
diff --git a/library/des.c b/library/des.c
index eaddf28..f0032b3 100644
--- a/library/des.c
+++ b/library/des.c
@@ -2,19 +2,7 @@
  *  FIPS-46-3 compliant Triple-DES implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  DES, on which TDES is based, was originally designed by Horst Feistel
diff --git a/library/dhm.c b/library/dhm.c
index 174137d..bcc07f5 100644
--- a/library/dhm.c
+++ b/library/dhm.c
@@ -2,19 +2,7 @@
  *  Diffie-Hellman-Merkle key exchange
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The following sources were referenced in the design of this implementation
@@ -60,10 +48,10 @@
         return MBEDTLS_ERR_DHM_BAD_INPUT_DATA;
     }
 
-    n = ((*p)[0] << 8) | (*p)[1];
+    n = MBEDTLS_GET_UINT16_BE(*p, 0);
     (*p) += 2;
 
-    if ((int) (end - *p) < n) {
+    if ((size_t) (end - *p) < (size_t) n) {
         return MBEDTLS_ERR_DHM_BAD_INPUT_DATA;
     }
 
@@ -269,7 +257,7 @@
     DHM_MPI_EXPORT(&ctx->G, n2);
     DHM_MPI_EXPORT(&ctx->GX, n3);
 
-    *olen = p - output;
+    *olen = (size_t) (p - output);
 
 cleanup:
     if (ret != 0 && ret > -128) {
diff --git a/library/ecdh.c b/library/ecdh.c
index 58ef881..52b1617 100644
--- a/library/ecdh.c
+++ b/library/ecdh.c
@@ -2,19 +2,7 @@
  *  Elliptic curve Diffie-Hellman
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
@@ -375,7 +363,7 @@
                                      const unsigned char *end)
 {
     return mbedtls_ecp_tls_read_point(&ctx->grp, &ctx->Qp, buf,
-                                      end - *buf);
+                                      (size_t) (end - *buf));
 }
 
 /*
@@ -391,7 +379,7 @@
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_ecp_group_id grp_id;
-    if ((ret = mbedtls_ecp_tls_read_group_id(&grp_id, buf, end - *buf))
+    if ((ret = mbedtls_ecp_tls_read_group_id(&grp_id, buf, (size_t) (end - *buf)))
         != 0) {
         return ret;
     }
diff --git a/library/ecdsa.c b/library/ecdsa.c
index 6e55f22..2f7a996 100644
--- a/library/ecdsa.c
+++ b/library/ecdsa.c
@@ -2,19 +2,7 @@
  *  Elliptic curve DSA
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
diff --git a/library/ecjpake.c b/library/ecjpake.c
index 6355b5e..cdf5d7e 100644
--- a/library/ecjpake.c
+++ b/library/ecjpake.c
@@ -2,19 +2,7 @@
  *  Elliptic curve J-PAKE
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
@@ -180,7 +168,7 @@
     }
 
     ret = mbedtls_ecp_point_write_binary(grp, P, pf,
-                                         &len, *p + 4, end - (*p + 4));
+                                         &len, *p + 4, (size_t) (end - (*p + 4)));
     if (ret != 0) {
         return ret;
     }
@@ -238,7 +226,7 @@
 
     /* Compute hash */
     MBEDTLS_MPI_CHK(mbedtls_ecjpake_compute_hash(md_type,
-                                                 buf, p - buf, hash));
+                                                 buf, (size_t) (p - buf), hash));
 
     /* Turn it into an integer mod n */
     MBEDTLS_MPI_CHK(mbedtls_mpi_read_binary(h, hash,
@@ -281,7 +269,7 @@
         return MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
     }
 
-    MBEDTLS_MPI_CHK(mbedtls_ecp_tls_read_point(grp, &V, p, end - *p));
+    MBEDTLS_MPI_CHK(mbedtls_ecp_tls_read_point(grp, &V, p, (size_t) (end - *p)));
 
     if (end < *p || (size_t) (end - *p) < 1) {
         ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
@@ -358,7 +346,7 @@
 
     /* Write it out */
     MBEDTLS_MPI_CHK(mbedtls_ecp_tls_write_point(grp, &V,
-                                                pf, &len, *p, end - *p));
+                                                pf, &len, *p, (size_t) (end - *p)));
     *p += len;
 
     len = mbedtls_mpi_size(&h);   /* actually r */
@@ -404,7 +392,7 @@
      *     ECSchnorrZKP zkp;
      * } ECJPAKEKeyKP;
      */
-    MBEDTLS_MPI_CHK(mbedtls_ecp_tls_read_point(grp, X, p, end - *p));
+    MBEDTLS_MPI_CHK(mbedtls_ecp_tls_read_point(grp, X, p, (size_t) (end - *p)));
     if (mbedtls_ecp_is_zero(X)) {
         ret = MBEDTLS_ERR_ECP_INVALID_KEY;
         goto cleanup;
@@ -443,7 +431,7 @@
     MBEDTLS_MPI_CHK(mbedtls_ecp_gen_keypair_base((mbedtls_ecp_group *) grp, G, x, X,
                                                  f_rng, p_rng));
     MBEDTLS_MPI_CHK(mbedtls_ecp_tls_write_point(grp, X,
-                                                pf, &len, *p, end - *p));
+                                                pf, &len, *p, (size_t) (end - *p)));
     *p += len;
 
     /* Generate and write proof */
@@ -516,7 +504,7 @@
     MBEDTLS_MPI_CHK(ecjpake_kkp_write(md_type, grp, pf, G, xm2, Xb, id,
                                       &p, end, f_rng, p_rng));
 
-    *olen = p - buf;
+    *olen = (size_t) (p - buf);
 
 cleanup:
     return ret;
@@ -705,7 +693,7 @@
             goto cleanup;
         }
         MBEDTLS_MPI_CHK(mbedtls_ecp_tls_write_group(&ctx->grp, &ec_len,
-                                                    p, end - p));
+                                                    p, (size_t) (end - p)));
         p += ec_len;
     }
 
@@ -714,7 +702,7 @@
         goto cleanup;
     }
     MBEDTLS_MPI_CHK(mbedtls_ecp_tls_write_point(&ctx->grp, &Xm,
-                                                ctx->point_format, &ec_len, p, end - p));
+                                                ctx->point_format, &ec_len, p, (size_t) (end - p)));
     p += ec_len;
 
     MBEDTLS_MPI_CHK(ecjpake_zkp_write(ctx->md_type, &ctx->grp,
@@ -722,7 +710,7 @@
                                       &G, &xm, &Xm, ID_MINE,
                                       &p, end, f_rng, p_rng));
 
-    *olen = p - buf;
+    *olen = (size_t) (p - buf);
 
 cleanup:
     mbedtls_ecp_point_free(&G);
diff --git a/library/ecp.c b/library/ecp.c
index dfa0957..b6ea070 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -2,19 +2,7 @@
  *  Elliptic curves over GF(p): generic functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
diff --git a/library/ecp_curves.c b/library/ecp_curves.c
index 7b850e5..577e23b 100644
--- a/library/ecp_curves.c
+++ b/library/ecp_curves.c
@@ -2,19 +2,7 @@
  *  Elliptic curves over GF(p): curve-specific data and functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/ecp_curves_new.c b/library/ecp_curves_new.c
index d431dcf..4ee0f58 100644
--- a/library/ecp_curves_new.c
+++ b/library/ecp_curves_new.c
@@ -2,19 +2,7 @@
  *  Elliptic curves over GF(p): curve-specific data and functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/ecp_internal_alt.h b/library/ecp_internal_alt.h
index f663d67..668edc7 100644
--- a/library/ecp_internal_alt.h
+++ b/library/ecp_internal_alt.h
@@ -6,19 +6,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
diff --git a/library/ecp_invasive.h b/library/ecp_invasive.h
index bb3b127..ff9f9ec 100644
--- a/library/ecp_invasive.h
+++ b/library/ecp_invasive.h
@@ -9,19 +9,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef MBEDTLS_ECP_INVASIVE_H
 #define MBEDTLS_ECP_INVASIVE_H
diff --git a/library/entropy.c b/library/entropy.c
index 0007917..e3bc851 100644
--- a/library/entropy.c
+++ b/library/entropy.c
@@ -2,19 +2,7 @@
  *  Entropy accumulator implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/entropy_poll.c b/library/entropy_poll.c
index 9d5b1e6..de2e038 100644
--- a/library/entropy_poll.c
+++ b/library/entropy_poll.c
@@ -2,19 +2,7 @@
  *  Platform-specific and custom entropy polling functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #if defined(__linux__) && !defined(_GNU_SOURCE)
@@ -100,7 +88,7 @@
     memset(buf, 0, buflen);
 #endif
 #endif
-    return syscall(SYS_getrandom, buf, buflen, flags);
+    return (int) syscall(SYS_getrandom, buf, buflen, flags);
 }
 #endif /* SYS_getrandom */
 #endif /* __linux__ || __midipix__ */
@@ -114,7 +102,7 @@
 #define HAVE_GETRANDOM
 static int getrandom_wrapper(void *buf, size_t buflen, unsigned int flags)
 {
-    return getrandom(buf, buflen, flags);
+    return (int) getrandom(buf, buflen, flags);
 }
 #endif /* (__FreeBSD__ && __FreeBSD_version >= 1200000) ||
           (__DragonFly__ && __DragonFly_version >= 500700) */
@@ -168,7 +156,7 @@
 #if defined(HAVE_GETRANDOM)
     ret = getrandom_wrapper(output, len, 0);
     if (ret >= 0) {
-        *olen = ret;
+        *olen = (size_t) ret;
         return 0;
     } else if (errno != ENOSYS) {
         return MBEDTLS_ERR_ENTROPY_SOURCE_FAILED;
diff --git a/library/entropy_poll.h b/library/entropy_poll.h
index be4943c..6b4aec0 100644
--- a/library/entropy_poll.h
+++ b/library/entropy_poll.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef MBEDTLS_ENTROPY_POLL_H
 #define MBEDTLS_ENTROPY_POLL_H
diff --git a/library/gcm.c b/library/gcm.c
index c8618be..8181ec8 100644
--- a/library/gcm.c
+++ b/library/gcm.c
@@ -2,19 +2,7 @@
  *  NIST SP800-38D compliant GCM implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
@@ -37,6 +25,10 @@
 #include "mbedtls/error.h"
 #include "mbedtls/constant_time.h"
 
+#if !defined(MBEDTLS_CIPHER_C)
+#include "block_cipher_internal.h"
+#endif
+
 #include <string.h>
 
 #if defined(MBEDTLS_AESNI_C)
@@ -71,10 +63,16 @@
     uint64_t hi, lo;
     uint64_t vl, vh;
     unsigned char h[16];
-    size_t olen = 0;
 
     memset(h, 0, 16);
-    if ((ret = mbedtls_cipher_update(&ctx->cipher_ctx, h, 16, h, &olen)) != 0) {
+
+#if defined(MBEDTLS_CIPHER_C)
+    size_t olen = 0;
+    ret = mbedtls_cipher_update(&ctx->cipher_ctx, h, 16, h, &olen);
+#else
+    ret = mbedtls_block_cipher_encrypt(&ctx->block_cipher_ctx, h, h);
+#endif
+    if (ret != 0) {
         return ret;
     }
 
@@ -136,12 +134,14 @@
                        unsigned int keybits)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    const mbedtls_cipher_info_t *cipher_info;
 
     if (keybits != 128 && keybits != 192 && keybits != 256) {
         return MBEDTLS_ERR_GCM_BAD_INPUT;
     }
 
+#if defined(MBEDTLS_CIPHER_C)
+    const mbedtls_cipher_info_t *cipher_info;
+
     cipher_info = mbedtls_cipher_info_from_values(cipher, keybits,
                                                   MBEDTLS_MODE_ECB);
     if (cipher_info == NULL) {
@@ -162,6 +162,17 @@
                                      MBEDTLS_ENCRYPT)) != 0) {
         return ret;
     }
+#else
+    mbedtls_block_cipher_free(&ctx->block_cipher_ctx);
+
+    if ((ret = mbedtls_block_cipher_setup(&ctx->block_cipher_ctx, cipher)) != 0) {
+        return ret;
+    }
+
+    if ((ret = mbedtls_block_cipher_setkey(&ctx->block_cipher_ctx, key, keybits)) != 0) {
+        return ret;
+    }
+#endif
 
     if ((ret = gcm_gen_table(ctx)) != 0) {
         return ret;
@@ -264,8 +275,11 @@
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char work_buf[16];
     const unsigned char *p;
-    size_t use_len, olen = 0;
+    size_t use_len;
     uint64_t iv_bits;
+#if defined(MBEDTLS_CIPHER_C)
+    size_t olen = 0;
+#endif
 
     /* IV is limited to 2^64 bits, so 2^61 bytes */
     /* IV is not allowed to be zero length */
@@ -305,8 +319,13 @@
         gcm_mult(ctx, ctx->y, ctx->y);
     }
 
-    if ((ret = mbedtls_cipher_update(&ctx->cipher_ctx, ctx->y, 16,
-                                     ctx->base_ectr, &olen)) != 0) {
+
+#if defined(MBEDTLS_CIPHER_C)
+    ret = mbedtls_cipher_update(&ctx->cipher_ctx, ctx->y, 16, ctx->base_ectr, &olen);
+#else
+    ret = mbedtls_block_cipher_encrypt(&ctx->block_cipher_ctx, ctx->y, ctx->base_ectr);
+#endif
+    if (ret != 0) {
         return ret;
     }
 
@@ -398,11 +417,15 @@
                     const unsigned char *input,
                     unsigned char *output)
 {
-    size_t olen = 0;
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    if ((ret = mbedtls_cipher_update(&ctx->cipher_ctx, ctx->y, 16, ectr,
-                                     &olen)) != 0) {
+#if defined(MBEDTLS_CIPHER_C)
+    size_t olen = 0;
+    ret = mbedtls_cipher_update(&ctx->cipher_ctx, ctx->y, 16, ectr, &olen);
+#else
+    ret = mbedtls_block_cipher_encrypt(&ctx->block_cipher_ctx, ctx->y, ectr);
+#endif
+    if (ret != 0) {
         mbedtls_platform_zeroize(ectr, 16);
         return ret;
     }
@@ -626,7 +649,11 @@
     if (ctx == NULL) {
         return;
     }
+#if defined(MBEDTLS_CIPHER_C)
     mbedtls_cipher_free(&ctx->cipher_ctx);
+#else
+    mbedtls_block_cipher_free(&ctx->block_cipher_ctx);
+#endif
     mbedtls_platform_zeroize(ctx, sizeof(mbedtls_gcm_context));
 }
 
diff --git a/library/hkdf.c b/library/hkdf.c
index a3f071e..631ac24 100644
--- a/library/hkdf.c
+++ b/library/hkdf.c
@@ -2,19 +2,7 @@
  *  HKDF implementation -- RFC 5869
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #include "common.h"
 
diff --git a/library/hmac_drbg.c b/library/hmac_drbg.c
index af205aa..90174d5 100644
--- a/library/hmac_drbg.c
+++ b/library/hmac_drbg.c
@@ -2,19 +2,7 @@
  *  HMAC_DRBG implementation (NIST SP 800-90)
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
diff --git a/library/lmots.c b/library/lmots.c
index 9d79694..c7091b4 100644
--- a/library/lmots.c
+++ b/library/lmots.c
@@ -2,19 +2,7 @@
  * The LM-OTS one-time public-key signature scheme
  *
  * Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
@@ -81,29 +69,6 @@
 int (*mbedtls_lmots_sign_private_key_invalidated_hook)(unsigned char *) = NULL;
 #endif /* defined(MBEDTLS_TEST_HOOKS) */
 
-void mbedtls_lms_unsigned_int_to_network_bytes(unsigned int val, size_t len,
-                                               unsigned char *bytes)
-{
-    size_t idx;
-
-    for (idx = 0; idx < len; idx++) {
-        bytes[idx] = (val >> ((len - 1 - idx) * 8)) & 0xFF;
-    }
-}
-
-unsigned int mbedtls_lms_network_bytes_to_unsigned_int(size_t len,
-                                                       const unsigned char *bytes)
-{
-    size_t idx;
-    unsigned int val = 0;
-
-    for (idx = 0; idx < len; idx++) {
-        val |= ((unsigned int) bytes[idx]) << (8 * (len - 1 - idx));
-    }
-
-    return val;
-}
-
 /* Calculate the checksum digits that are appended to the end of the LMOTS digit
  * string. See NIST SP800-208 section 3.1 or RFC8554 Algorithm 2 for details of
  * the checksum algorithm.
@@ -203,8 +168,7 @@
     }
 
     checksum = lmots_checksum_calculate(params, out);
-    mbedtls_lms_unsigned_int_to_network_bytes(checksum, CHECKSUM_LEN,
-                                              out + MBEDTLS_LMOTS_N_HASH_LEN(params->type));
+    MBEDTLS_PUT_UINT16_BE(checksum, out, MBEDTLS_LMOTS_N_HASH_LEN(params->type));
 
 exit:
     psa_hash_abort(&op);
@@ -293,17 +257,13 @@
                 goto exit;
             }
 
-            mbedtls_lms_unsigned_int_to_network_bytes(i_digit_idx,
-                                                      I_DIGIT_IDX_LEN,
-                                                      i_digit_idx_bytes);
+            MBEDTLS_PUT_UINT16_BE(i_digit_idx, i_digit_idx_bytes, 0);
             status = psa_hash_update(&op, i_digit_idx_bytes, I_DIGIT_IDX_LEN);
             if (status != PSA_SUCCESS) {
                 goto exit;
             }
 
-            mbedtls_lms_unsigned_int_to_network_bytes(j_hash_idx,
-                                                      J_HASH_IDX_LEN,
-                                                      j_hash_idx_bytes);
+            j_hash_idx_bytes[0] = (uint8_t) j_hash_idx;
             status = psa_hash_update(&op, j_hash_idx_bytes, J_HASH_IDX_LEN);
             if (status != PSA_SUCCESS) {
                 goto exit;
@@ -437,11 +397,8 @@
         return MBEDTLS_ERR_LMS_BAD_INPUT_DATA;
     }
 
-    ctx->params.type =
-        (mbedtls_lmots_algorithm_type_t) mbedtls_lms_network_bytes_to_unsigned_int(
-            MBEDTLS_LMOTS_TYPE_LEN,
-            key +
-            MBEDTLS_LMOTS_SIG_TYPE_OFFSET);
+    ctx->params.type = (mbedtls_lmots_algorithm_type_t)
+                       MBEDTLS_GET_UINT32_BE(key, MBEDTLS_LMOTS_SIG_TYPE_OFFSET);
 
     if (key_len != MBEDTLS_LMOTS_PUBLIC_KEY_LEN(ctx->params.type)) {
         return MBEDTLS_ERR_LMS_BAD_INPUT_DATA;
@@ -476,9 +433,7 @@
         return MBEDTLS_ERR_LMS_BAD_INPUT_DATA;
     }
 
-    mbedtls_lms_unsigned_int_to_network_bytes(ctx->params.type,
-                                              MBEDTLS_LMOTS_TYPE_LEN,
-                                              key + MBEDTLS_LMOTS_SIG_TYPE_OFFSET);
+    MBEDTLS_PUT_UINT32_BE(ctx->params.type, key, MBEDTLS_LMOTS_SIG_TYPE_OFFSET);
 
     memcpy(key + PUBLIC_KEY_I_KEY_ID_OFFSET,
            ctx->params.I_key_identifier,
@@ -571,9 +526,7 @@
         return MBEDTLS_ERR_LMS_VERIFY_FAILED;
     }
 
-    if (mbedtls_lms_network_bytes_to_unsigned_int(MBEDTLS_LMOTS_TYPE_LEN,
-                                                  sig + MBEDTLS_LMOTS_SIG_TYPE_OFFSET) !=
-        MBEDTLS_LMOTS_SHA256_N32_W8) {
+    if (MBEDTLS_GET_UINT32_BE(sig, MBEDTLS_LMOTS_SIG_TYPE_OFFSET) != MBEDTLS_LMOTS_SHA256_N32_W8) {
         return MBEDTLS_ERR_LMS_VERIFY_FAILED;
     }
 
@@ -619,7 +572,7 @@
     size_t output_hash_len;
     unsigned int i_digit_idx;
     unsigned char i_digit_idx_bytes[2];
-    unsigned char const_bytes[1];
+    unsigned char const_bytes[1] = { 0xFF };
 
     if (ctx->have_private_key) {
         return MBEDTLS_ERR_LMS_BAD_INPUT_DATA;
@@ -635,12 +588,7 @@
            I_key_identifier,
            sizeof(ctx->params.I_key_identifier));
 
-    mbedtls_lms_unsigned_int_to_network_bytes(q_leaf_identifier,
-                                              MBEDTLS_LMOTS_Q_LEAF_ID_LEN,
-                                              ctx->params.q_leaf_identifier);
-
-    mbedtls_lms_unsigned_int_to_network_bytes(0xFF, sizeof(const_bytes),
-                                              const_bytes);
+    MBEDTLS_PUT_UINT32_BE(q_leaf_identifier, ctx->params.q_leaf_identifier, 0);
 
     for (i_digit_idx = 0;
          i_digit_idx < MBEDTLS_LMOTS_P_SIG_DIGIT_COUNT(ctx->params.type);
@@ -664,8 +612,7 @@
             goto exit;
         }
 
-        mbedtls_lms_unsigned_int_to_network_bytes(i_digit_idx, I_DIGIT_IDX_LEN,
-                                                  i_digit_idx_bytes);
+        MBEDTLS_PUT_UINT16_BE(i_digit_idx, i_digit_idx_bytes, 0);
         status = psa_hash_update(&op, i_digit_idx_bytes, I_DIGIT_IDX_LEN);
         if (status != PSA_SUCCESS) {
             goto exit;
@@ -786,9 +733,7 @@
         goto exit;
     }
 
-    mbedtls_lms_unsigned_int_to_network_bytes(ctx->params.type,
-                                              MBEDTLS_LMOTS_TYPE_LEN,
-                                              sig + MBEDTLS_LMOTS_SIG_TYPE_OFFSET);
+    MBEDTLS_PUT_UINT32_BE(ctx->params.type, sig, MBEDTLS_LMOTS_SIG_TYPE_OFFSET);
 
     /* Test hook to check if sig is being written to before we invalidate the
      * private key.
diff --git a/library/lmots.h b/library/lmots.h
index 98d1941..cf92d32 100644
--- a/library/lmots.h
+++ b/library/lmots.h
@@ -8,19 +8,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_LMOTS_H
@@ -56,29 +44,6 @@
 extern int (*mbedtls_lmots_sign_private_key_invalidated_hook)(unsigned char *);
 #endif /* defined(MBEDTLS_TEST_HOOKS) */
 
-/**
- * \brief                    This function converts an unsigned int into a
- *                           network-byte-order (big endian) string.
- *
- * \param val                The unsigned integer value
- * \param len                The length of the string.
- * \param bytes              The string to output into.
- */
-void mbedtls_lms_unsigned_int_to_network_bytes(unsigned int val, size_t len,
-                                               unsigned char *bytes);
-
-/**
- * \brief                    This function converts a network-byte-order
- *                           (big endian) string into an unsigned integer.
- *
- * \param len                The length of the string.
- * \param bytes              The string.
- *
- * \return                   The corresponding LMS error code.
- */
-unsigned int mbedtls_lms_network_bytes_to_unsigned_int(size_t len,
-                                                       const unsigned char *bytes);
-
 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
 /**
  * \brief                    This function converts a \ref psa_status_t to a
diff --git a/library/lms.c b/library/lms.c
index c06f9c2..08fe753 100644
--- a/library/lms.c
+++ b/library/lms.c
@@ -2,19 +2,7 @@
  *  The LMS stateful-hash public-key signature scheme
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
@@ -124,7 +112,7 @@
         goto exit;
     }
 
-    mbedtls_lms_unsigned_int_to_network_bytes(r_node_idx, 4, r_node_idx_bytes);
+    MBEDTLS_PUT_UINT32_BE(r_node_idx, r_node_idx_bytes, 0);
     status = psa_hash_update(&op, r_node_idx_bytes, 4);
     if (status != PSA_SUCCESS) {
         goto exit;
@@ -198,7 +186,7 @@
         goto exit;
     }
 
-    mbedtls_lms_unsigned_int_to_network_bytes(r_node_idx, 4, r_node_idx_bytes);
+    MBEDTLS_PUT_UINT32_BE(r_node_idx, r_node_idx_bytes, 0);
     status = psa_hash_update(&op, r_node_idx_bytes, 4);
     if (status != PSA_SUCCESS) {
         goto exit;
@@ -249,10 +237,7 @@
     mbedtls_lms_algorithm_type_t type;
     mbedtls_lmots_algorithm_type_t otstype;
 
-    type = (mbedtls_lms_algorithm_type_t) mbedtls_lms_network_bytes_to_unsigned_int(
-        MBEDTLS_LMS_TYPE_LEN,
-        key +
-        PUBLIC_KEY_TYPE_OFFSET);
+    type = (mbedtls_lms_algorithm_type_t) MBEDTLS_GET_UINT32_BE(key, PUBLIC_KEY_TYPE_OFFSET);
     if (type != MBEDTLS_LMS_SHA256_M32_H10) {
         return MBEDTLS_ERR_LMS_BAD_INPUT_DATA;
     }
@@ -262,10 +247,8 @@
         return MBEDTLS_ERR_LMS_BAD_INPUT_DATA;
     }
 
-    otstype = (mbedtls_lmots_algorithm_type_t) mbedtls_lms_network_bytes_to_unsigned_int(
-        MBEDTLS_LMOTS_TYPE_LEN,
-        key +
-        PUBLIC_KEY_OTSTYPE_OFFSET);
+    otstype = (mbedtls_lmots_algorithm_type_t)
+              MBEDTLS_GET_UINT32_BE(key, PUBLIC_KEY_OTSTYPE_OFFSET);
     if (otstype != MBEDTLS_LMOTS_SHA256_N32_W8) {
         return MBEDTLS_ERR_LMS_BAD_INPUT_DATA;
     }
@@ -294,12 +277,8 @@
         return MBEDTLS_ERR_LMS_BAD_INPUT_DATA;
     }
 
-    mbedtls_lms_unsigned_int_to_network_bytes(
-        ctx->params.type,
-        MBEDTLS_LMS_TYPE_LEN, key + PUBLIC_KEY_TYPE_OFFSET);
-    mbedtls_lms_unsigned_int_to_network_bytes(ctx->params.otstype,
-                                              MBEDTLS_LMOTS_TYPE_LEN,
-                                              key + PUBLIC_KEY_OTSTYPE_OFFSET);
+    MBEDTLS_PUT_UINT32_BE(ctx->params.type, key, PUBLIC_KEY_TYPE_OFFSET);
+    MBEDTLS_PUT_UINT32_BE(ctx->params.otstype, key, PUBLIC_KEY_OTSTYPE_OFFSET);
     memcpy(key + PUBLIC_KEY_I_KEY_ID_OFFSET,
            ctx->params.I_key_identifier,
            MBEDTLS_LMOTS_I_KEY_ID_LEN);
@@ -351,9 +330,7 @@
         return MBEDTLS_ERR_LMS_VERIFY_FAILED;
     }
 
-    if (mbedtls_lms_network_bytes_to_unsigned_int(MBEDTLS_LMOTS_TYPE_LEN,
-                                                  sig + SIG_OTS_SIG_OFFSET +
-                                                  MBEDTLS_LMOTS_SIG_TYPE_OFFSET)
+    if (MBEDTLS_GET_UINT32_BE(sig, SIG_OTS_SIG_OFFSET + MBEDTLS_LMOTS_SIG_TYPE_OFFSET)
         != MBEDTLS_LMOTS_SHA256_N32_W8) {
         return MBEDTLS_ERR_LMS_VERIFY_FAILED;
     }
@@ -362,15 +339,13 @@
         return MBEDTLS_ERR_LMS_VERIFY_FAILED;
     }
 
-    if (mbedtls_lms_network_bytes_to_unsigned_int(MBEDTLS_LMS_TYPE_LEN,
-                                                  sig + SIG_TYPE_OFFSET(ctx->params.otstype))
+    if (MBEDTLS_GET_UINT32_BE(sig, SIG_TYPE_OFFSET(ctx->params.otstype))
         != MBEDTLS_LMS_SHA256_M32_H10) {
         return MBEDTLS_ERR_LMS_VERIFY_FAILED;
     }
 
 
-    q_leaf_identifier = mbedtls_lms_network_bytes_to_unsigned_int(
-        MBEDTLS_LMOTS_Q_LEAF_ID_LEN, sig + SIG_Q_LEAF_ID_OFFSET);
+    q_leaf_identifier = MBEDTLS_GET_UINT32_BE(sig, SIG_Q_LEAF_ID_OFFSET);
 
     if (q_leaf_identifier >= MERKLE_TREE_LEAF_NODE_AM(ctx->params.type)) {
         return MBEDTLS_ERR_LMS_VERIFY_FAILED;
@@ -379,9 +354,7 @@
     memcpy(ots_params.I_key_identifier,
            ctx->params.I_key_identifier,
            MBEDTLS_LMOTS_I_KEY_ID_LEN);
-    mbedtls_lms_unsigned_int_to_network_bytes(q_leaf_identifier,
-                                              MBEDTLS_LMOTS_Q_LEAF_ID_LEN,
-                                              ots_params.q_leaf_identifier);
+    MBEDTLS_PUT_UINT32_BE(q_leaf_identifier, ots_params.q_leaf_identifier, 0);
     ots_params.type = ctx->params.otstype;
 
     ret = mbedtls_lmots_calculate_public_key_candidate(&ots_params,
@@ -517,7 +490,7 @@
     unsigned int height;
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    tree = mbedtls_calloc(MERKLE_TREE_NODE_AM(ctx->params.type),
+    tree = mbedtls_calloc((size_t) MERKLE_TREE_NODE_AM(ctx->params.type),
                           node_bytes);
     if (tree == NULL) {
         return MBEDTLS_ERR_LMS_ALLOC_FAILED;
@@ -542,7 +515,7 @@
 
 exit:
     mbedtls_zeroize_and_free(tree, node_bytes *
-                             MERKLE_TREE_NODE_AM(ctx->params.type));
+                             (size_t) MERKLE_TREE_NODE_AM(ctx->params.type));
 
     return ret;
 }
@@ -681,7 +654,7 @@
         return MBEDTLS_ERR_LMS_BAD_INPUT_DATA;
     }
 
-    tree = mbedtls_calloc(MERKLE_TREE_NODE_AM(priv_ctx->params.type),
+    tree = mbedtls_calloc((size_t) MERKLE_TREE_NODE_AM(priv_ctx->params.type),
                           node_bytes);
     if (tree == NULL) {
         return MBEDTLS_ERR_LMS_ALLOC_FAILED;
@@ -704,7 +677,7 @@
 
 exit:
     mbedtls_zeroize_and_free(tree, node_bytes *
-                             MERKLE_TREE_NODE_AM(priv_ctx->params.type));
+                             (size_t) MERKLE_TREE_NODE_AM(priv_ctx->params.type));
 
     return ret;
 }
@@ -765,12 +738,8 @@
         return ret;
     }
 
-    mbedtls_lms_unsigned_int_to_network_bytes(ctx->params.type,
-                                              MBEDTLS_LMS_TYPE_LEN,
-                                              sig + SIG_TYPE_OFFSET(ctx->params.otstype));
-    mbedtls_lms_unsigned_int_to_network_bytes(q_leaf_identifier,
-                                              MBEDTLS_LMOTS_Q_LEAF_ID_LEN,
-                                              sig + SIG_Q_LEAF_ID_OFFSET);
+    MBEDTLS_PUT_UINT32_BE(ctx->params.type, sig, SIG_TYPE_OFFSET(ctx->params.otstype));
+    MBEDTLS_PUT_UINT32_BE(q_leaf_identifier, sig, SIG_Q_LEAF_ID_OFFSET);
 
     ret = get_merkle_path(ctx,
                           MERKLE_TREE_INTERNAL_NODE_AM(ctx->params.type) + q_leaf_identifier,
diff --git a/library/md.c b/library/md.c
index 6dfbba7..12a3ea2 100644
--- a/library/md.c
+++ b/library/md.c
@@ -6,19 +6,7 @@
  * \author Adriaan de Jong <dejong@fox-it.com>
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/md5.c b/library/md5.c
index 7e7e3ad..e4a87a2 100644
--- a/library/md5.c
+++ b/library/md5.c
@@ -2,19 +2,7 @@
  *  RFC 1321 compliant MD5 implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The MD5 algorithm was designed by Ron Rivest in 1991.
diff --git a/library/md_psa.h b/library/md_psa.h
index 8e00bb1..b201263 100644
--- a/library/md_psa.h
+++ b/library/md_psa.h
@@ -5,19 +5,7 @@
  *  PSA Crypto; it is a helper for the transition period.
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef MBEDTLS_MD_PSA_H
 #define MBEDTLS_MD_PSA_H
diff --git a/library/md_wrap.h b/library/md_wrap.h
index 166b43b..dad1235 100644
--- a/library/md_wrap.h
+++ b/library/md_wrap.h
@@ -9,19 +9,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef MBEDTLS_MD_WRAP_H
 #define MBEDTLS_MD_WRAP_H
diff --git a/library/memory_buffer_alloc.c b/library/memory_buffer_alloc.c
index e5052ce..79b0a8b 100644
--- a/library/memory_buffer_alloc.c
+++ b/library/memory_buffer_alloc.c
@@ -2,19 +2,7 @@
  *  Buffer-based memory allocator
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/mps_common.h b/library/mps_common.h
index 301d525..f9fe099 100644
--- a/library/mps_common.h
+++ b/library/mps_common.h
@@ -1,20 +1,6 @@
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
- *  This file is part of Mbed TLS (https://tls.mbed.org)
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /**
diff --git a/library/mps_error.h b/library/mps_error.h
index 5113959..016a84c 100644
--- a/library/mps_error.h
+++ b/library/mps_error.h
@@ -1,20 +1,6 @@
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
- *  This file is part of Mbed TLS (https://tls.mbed.org)
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /**
diff --git a/library/mps_reader.c b/library/mps_reader.c
index dc2a91c..27d0c04 100644
--- a/library/mps_reader.c
+++ b/library/mps_reader.c
@@ -2,21 +2,7 @@
  *  Message Processing Stack, Reader implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
- *  This file is part of Mbed TLS (https://tls.mbed.org)
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/mps_reader.h b/library/mps_reader.h
index bb912ec..3193a5e 100644
--- a/library/mps_reader.h
+++ b/library/mps_reader.h
@@ -1,20 +1,6 @@
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
- *  This file is part of Mbed TLS (https://tls.mbed.org)
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /**
diff --git a/library/mps_trace.c b/library/mps_trace.c
index 9ba1f85..69f6e5a 100644
--- a/library/mps_trace.c
+++ b/library/mps_trace.c
@@ -2,21 +2,7 @@
  *  Message Processing Stack, Trace module
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
- *  This file is part of Mbed TLS (https://tls.mbed.org)
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/mps_trace.h b/library/mps_trace.h
index f8e0a5d..b456b2f 100644
--- a/library/mps_trace.h
+++ b/library/mps_trace.h
@@ -1,20 +1,6 @@
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
- *  This file is part of Mbed TLS (https://tls.mbed.org)
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /**
diff --git a/library/net_sockets.c b/library/net_sockets.c
index db80447..2b120c5 100644
--- a/library/net_sockets.c
+++ b/library/net_sockets.c
@@ -2,19 +2,7 @@
  *  TCP/IP or UDP/IP networking functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /* Enable definition of getaddrinfo() even when compiling with -std=c99. Must
diff --git a/library/nist_kw.c b/library/nist_kw.c
index 7bdc807..f15425b 100644
--- a/library/nist_kw.c
+++ b/library/nist_kw.c
@@ -3,19 +3,7 @@
  *  only
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  * Definition of Key Wrapping:
diff --git a/library/oid.c b/library/oid.c
index d139a6d..d8339c1 100644
--- a/library/oid.c
+++ b/library/oid.c
@@ -4,19 +4,7 @@
  * \brief Object Identifier (OID) database
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -1141,7 +1129,7 @@
         }
     }
 
-    encoded_len = out_ptr - oid->p;
+    encoded_len = (size_t) (out_ptr - oid->p);
     resized_mem = mbedtls_calloc(encoded_len, 1);
     if (resized_mem == NULL) {
         ret = MBEDTLS_ERR_ASN1_ALLOC_FAILED;
diff --git a/library/padlock.c b/library/padlock.c
index 563d40e..1f00691 100644
--- a/library/padlock.c
+++ b/library/padlock.c
@@ -2,19 +2,7 @@
  *  VIA PadLock support functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  This implementation is based on the VIA PadLock Programming Guide:
@@ -108,6 +96,7 @@
     return 0;
 }
 
+#if defined(MBEDTLS_CIPHER_MODE_CBC)
 /*
  * PadLock AES-CBC buffer en(de)cryption
  */
@@ -161,6 +150,7 @@
 
     return 0;
 }
+#endif /* MBEDTLS_CIPHER_MODE_CBC */
 
 #endif /* MBEDTLS_VIA_PADLOCK_HAVE_CODE */
 
diff --git a/library/padlock.h b/library/padlock.h
index a00afe0..92d72af 100644
--- a/library/padlock.h
+++ b/library/padlock.h
@@ -9,19 +9,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef MBEDTLS_PADLOCK_H
 #define MBEDTLS_PADLOCK_H
diff --git a/library/pem.c b/library/pem.c
index bd269dd..539134c 100644
--- a/library/pem.c
+++ b/library/pem.c
@@ -2,19 +2,7 @@
  *  Privacy Enhanced Mail (PEM) decoding
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -310,7 +298,7 @@
     if (*end == '\n') {
         end++;
     }
-    *use_len = end - data;
+    *use_len = (size_t) (end - data);
 
     enc = 0;
 
@@ -395,7 +383,7 @@
         return MBEDTLS_ERR_PEM_INVALID_DATA;
     }
 
-    ret = mbedtls_base64_decode(NULL, 0, &len, s1, s2 - s1);
+    ret = mbedtls_base64_decode(NULL, 0, &len, s1, (size_t) (s2 - s1));
 
     if (ret == MBEDTLS_ERR_BASE64_INVALID_CHARACTER) {
         return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PEM_INVALID_DATA, ret);
@@ -405,7 +393,7 @@
         return MBEDTLS_ERR_PEM_ALLOC_FAILED;
     }
 
-    if ((ret = mbedtls_base64_decode(buf, len, &len, s1, s2 - s1)) != 0) {
+    if ((ret = mbedtls_base64_decode(buf, len, &len, s1, (size_t) (s2 - s1))) != 0) {
         mbedtls_zeroize_and_free(buf, len);
         return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_PEM_INVALID_DATA, ret);
     }
@@ -520,7 +508,7 @@
     p += strlen(footer);
 
     *p++ = '\0';
-    *olen = p - buf;
+    *olen = (size_t) (p - buf);
 
     /* Clean any remaining data previously written to the buffer */
     memset(buf + *olen, 0, buf_len - *olen);
diff --git a/library/pk.c b/library/pk.c
index 96b8ef9..5a1698f 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -2,19 +2,7 @@
  *  Public Key abstraction layer
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/pk_internal.h b/library/pk_internal.h
index 04bdbbc..571b57e 100644
--- a/library/pk_internal.h
+++ b/library/pk_internal.h
@@ -6,19 +6,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef MBEDTLS_PK_INTERNAL_H
 #define MBEDTLS_PK_INTERNAL_H
diff --git a/library/pk_wrap.c b/library/pk_wrap.c
index 2c67836..182d07f 100644
--- a/library/pk_wrap.c
+++ b/library/pk_wrap.c
@@ -2,19 +2,7 @@
  *  Public Key abstraction layer: wrapper functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/pk_wrap.h b/library/pk_wrap.h
index b1e0218..28c815a 100644
--- a/library/pk_wrap.h
+++ b/library/pk_wrap.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_PK_WRAP_H
diff --git a/library/pkcs12.c b/library/pkcs12.c
index 42e4fb4..160dc47 100644
--- a/library/pkcs12.c
+++ b/library/pkcs12.c
@@ -2,19 +2,7 @@
  *  PKCS#12 Personal Information Exchange Syntax
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The PKCS #12 Personal Information Exchange Syntax Standard v1.1
diff --git a/library/pkcs5.c b/library/pkcs5.c
index d10a193..d6209bd 100644
--- a/library/pkcs5.c
+++ b/library/pkcs5.c
@@ -6,19 +6,7 @@
  * \author Mathias Olsson <mathias@kompetensum.com>
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  * PKCS#5 includes PBKDF2 and more
diff --git a/library/pkcs7.c b/library/pkcs7.c
index cf05afd..0869c2e 100644
--- a/library/pkcs7.c
+++ b/library/pkcs7.c
@@ -1,18 +1,6 @@
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #include "common.h"
 
@@ -328,7 +316,7 @@
         goto out;
     }
 
-    signer->issuer_raw.len =  *p - signer->issuer_raw.p;
+    signer->issuer_raw.len =  (size_t) (*p - signer->issuer_raw.p);
 
     ret = mbedtls_x509_get_serial(p, end_issuer_and_sn, &signer->serial);
     if (ret != 0) {
diff --git a/library/pkparse.c b/library/pkparse.c
index ef57cee..edebf92 100644
--- a/library/pkparse.c
+++ b/library/pkparse.c
@@ -2,19 +2,7 @@
  *  Public Key layer for parsing key files and structures
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -940,7 +928,7 @@
             ret = pk_use_ecparams(&alg_params, pk);
         }
         if (ret == 0) {
-            ret = pk_ecc_set_pubkey(pk, *p, end - *p);
+            ret = pk_ecc_set_pubkey(pk, *p, (size_t) (end - *p));
             *p += end - *p;
         }
     } else
@@ -1245,7 +1233,7 @@
                                          MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
             }
 
-            if ((ret = pk_ecc_set_pubkey(pk, p, end2 - p)) == 0) {
+            if ((ret = pk_ecc_set_pubkey(pk, p, (size_t) (end2 - p))) == 0) {
                 pubkey_done = 1;
             } else {
                 /*
diff --git a/library/pkwrite.c b/library/pkwrite.c
index e38bc27..11c0204 100644
--- a/library/pkwrite.c
+++ b/library/pkwrite.c
@@ -2,19 +2,7 @@
  *  Public Key layer for writing key files and structures
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/pkwrite.h b/library/pkwrite.h
index 8cfa64b..544ab2f 100644
--- a/library/pkwrite.h
+++ b/library/pkwrite.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_PK_WRITE_H
diff --git a/library/platform.c b/library/platform.c
index b15b7b2..890c4cb 100644
--- a/library/platform.c
+++ b/library/platform.c
@@ -2,19 +2,7 @@
  *  Platform abstraction layer
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/platform_util.c b/library/platform_util.c
index fdafa1f..6d2dd14 100644
--- a/library/platform_util.c
+++ b/library/platform_util.c
@@ -3,19 +3,7 @@
  * library.
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
diff --git a/library/poly1305.c b/library/poly1305.c
index f4e1d3f..c9ebe9e 100644
--- a/library/poly1305.c
+++ b/library/poly1305.c
@@ -4,19 +4,7 @@
  * \brief Poly1305 authentication algorithm.
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #include "common.h"
 
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 739b077..1149940 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -1861,6 +1849,8 @@
     }
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
 
+    slot->status = PSA_SLOT_OCCUPIED;
+
     return PSA_SUCCESS;
 }
 
@@ -6637,7 +6627,7 @@
     memcpy(cur, data, data_length);
     cur += data_length;
 
-    status = psa_tls12_prf_set_key(prf, pms, cur - pms);
+    status = psa_tls12_prf_set_key(prf, pms, (size_t) (cur - pms));
 
     mbedtls_zeroize_and_free(pms, pms_len);
     return status;
diff --git a/library/psa_crypto_aead.c b/library/psa_crypto_aead.c
index 6f026a0..49aa961 100644
--- a/library/psa_crypto_aead.c
+++ b/library/psa_crypto_aead.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/psa_crypto_aead.h b/library/psa_crypto_aead.h
index 4b24b0f..a339219 100644
--- a/library/psa_crypto_aead.h
+++ b/library/psa_crypto_aead.h
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_AEAD_H
diff --git a/library/psa_crypto_cipher.c b/library/psa_crypto_cipher.c
index 38be84b..3132854 100644
--- a/library/psa_crypto_cipher.c
+++ b/library/psa_crypto_cipher.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -42,45 +30,97 @@
     psa_algorithm_t alg,
     psa_key_type_t key_type)
 {
-    switch (alg) {
-        case PSA_ALG_STREAM_CIPHER:
-        case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0):
-            if (key_type != PSA_KEY_TYPE_CHACHA20) {
-                return PSA_ERROR_NOT_SUPPORTED;
-            }
-            break;
+    /* Reduce code size - hinting to the compiler about what it can assume allows the compiler to
+       eliminate bits of the logic below. */
+#if !defined(PSA_WANT_KEY_TYPE_AES)
+    MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_AES);
+#endif
+#if !defined(PSA_WANT_KEY_TYPE_ARIA)
+    MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_ARIA);
+#endif
+#if !defined(PSA_WANT_KEY_TYPE_CAMELLIA)
+    MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_CAMELLIA);
+#endif
+#if !defined(PSA_WANT_KEY_TYPE_CHACHA20)
+    MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_CHACHA20);
+#endif
+#if !defined(PSA_WANT_KEY_TYPE_DES)
+    MBEDTLS_ASSUME(key_type != PSA_KEY_TYPE_DES);
+#endif
+#if !defined(PSA_WANT_ALG_CCM)
+    MBEDTLS_ASSUME(alg != PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, 0));
+#endif
+#if !defined(PSA_WANT_ALG_GCM)
+    MBEDTLS_ASSUME(alg != PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM, 0));
+#endif
+#if !defined(PSA_WANT_ALG_STREAM_CIPHER)
+    MBEDTLS_ASSUME(alg != PSA_ALG_STREAM_CIPHER);
+#endif
+#if !defined(PSA_WANT_ALG_CHACHA20_POLY1305)
+    MBEDTLS_ASSUME(alg != PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0));
+#endif
+#if !defined(PSA_WANT_ALG_CCM_STAR_NO_TAG)
+    MBEDTLS_ASSUME(alg != PSA_ALG_CCM_STAR_NO_TAG);
+#endif
+#if !defined(PSA_WANT_ALG_CTR)
+    MBEDTLS_ASSUME(alg != PSA_ALG_CTR);
+#endif
+#if !defined(PSA_WANT_ALG_CFB)
+    MBEDTLS_ASSUME(alg != PSA_ALG_CFB);
+#endif
+#if !defined(PSA_WANT_ALG_OFB)
+    MBEDTLS_ASSUME(alg != PSA_ALG_OFB);
+#endif
+#if !defined(PSA_WANT_ALG_XTS)
+    MBEDTLS_ASSUME(alg != PSA_ALG_XTS);
+#endif
+#if !defined(PSA_WANT_ALG_ECB_NO_PADDING)
+    MBEDTLS_ASSUME(alg != PSA_ALG_ECB_NO_PADDING);
+#endif
+#if !defined(PSA_WANT_ALG_CBC_NO_PADDING)
+    MBEDTLS_ASSUME(alg != PSA_ALG_CBC_NO_PADDING);
+#endif
+#if !defined(PSA_WANT_ALG_CBC_PKCS7)
+    MBEDTLS_ASSUME(alg != PSA_ALG_CBC_PKCS7);
+#endif
+#if !defined(PSA_WANT_ALG_CMAC)
+    MBEDTLS_ASSUME(alg != PSA_ALG_CMAC);
+#endif
 
-        case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, 0):
-        case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM, 0):
-        case PSA_ALG_CCM_STAR_NO_TAG:
-            if ((key_type != PSA_KEY_TYPE_AES) &&
-                (key_type != PSA_KEY_TYPE_ARIA) &&
-                (key_type != PSA_KEY_TYPE_CAMELLIA)) {
-                return PSA_ERROR_NOT_SUPPORTED;
-            }
-            break;
-
-        case PSA_ALG_CTR:
-        case PSA_ALG_CFB:
-        case PSA_ALG_OFB:
-        case PSA_ALG_XTS:
-        case PSA_ALG_ECB_NO_PADDING:
-        case PSA_ALG_CBC_NO_PADDING:
-        case PSA_ALG_CBC_PKCS7:
-        case PSA_ALG_CMAC:
-            if ((key_type != PSA_KEY_TYPE_AES) &&
-                (key_type != PSA_KEY_TYPE_ARIA) &&
-                (key_type != PSA_KEY_TYPE_DES) &&
-                (key_type != PSA_KEY_TYPE_CAMELLIA)) {
-                return PSA_ERROR_NOT_SUPPORTED;
-            }
-            break;
-
-        default:
-            return PSA_ERROR_NOT_SUPPORTED;
+    if (alg == PSA_ALG_STREAM_CIPHER ||
+        alg == PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0)) {
+        if (key_type == PSA_KEY_TYPE_CHACHA20) {
+            return PSA_SUCCESS;
+        }
     }
 
-    return PSA_SUCCESS;
+    if (alg == PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, 0) ||
+        alg == PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM, 0) ||
+        alg == PSA_ALG_CCM_STAR_NO_TAG) {
+        if (key_type == PSA_KEY_TYPE_AES ||
+            key_type == PSA_KEY_TYPE_ARIA ||
+            key_type == PSA_KEY_TYPE_CAMELLIA) {
+            return PSA_SUCCESS;
+        }
+    }
+
+    if (alg == PSA_ALG_CTR ||
+        alg == PSA_ALG_CFB ||
+        alg == PSA_ALG_OFB ||
+        alg == PSA_ALG_XTS ||
+        alg == PSA_ALG_ECB_NO_PADDING ||
+        alg == PSA_ALG_CBC_NO_PADDING ||
+        alg == PSA_ALG_CBC_PKCS7 ||
+        alg == PSA_ALG_CMAC) {
+        if (key_type == PSA_KEY_TYPE_AES ||
+            key_type == PSA_KEY_TYPE_ARIA ||
+            key_type == PSA_KEY_TYPE_DES ||
+            key_type == PSA_KEY_TYPE_CAMELLIA) {
+            return PSA_SUCCESS;
+        }
+    }
+
+    return PSA_ERROR_NOT_SUPPORTED;
 }
 
 psa_status_t mbedtls_cipher_values_from_psa(
diff --git a/library/psa_crypto_cipher.h b/library/psa_crypto_cipher.h
index 5ed8a77..cc56585 100644
--- a/library/psa_crypto_cipher.h
+++ b/library/psa_crypto_cipher.h
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_CIPHER_H
diff --git a/library/psa_crypto_client.c b/library/psa_crypto_client.c
index c323427..564463f 100644
--- a/library/psa_crypto_client.c
+++ b/library/psa_crypto_client.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/psa_crypto_core.h b/library/psa_crypto_core.h
index 29b3b94..46c5775 100644
--- a/library/psa_crypto_core.h
+++ b/library/psa_crypto_core.h
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_CORE_H
@@ -45,12 +33,19 @@
  */
 int psa_can_do_hash(psa_algorithm_t hash_alg);
 
+typedef enum {
+    PSA_SLOT_EMPTY = 0,
+    PSA_SLOT_OCCUPIED,
+} psa_key_slot_status_t;
+
 /** The data structure representing a key slot, containing key material
  * and metadata for one key.
  */
 typedef struct {
     psa_core_key_attributes_t attr;
 
+    psa_key_slot_status_t status;
+
     /*
      * Number of locks on the key slot held by the library.
      *
@@ -100,7 +95,7 @@
  */
 static inline int psa_is_key_slot_occupied(const psa_key_slot_t *slot)
 {
-    return slot->attr.type != 0;
+    return slot->status == PSA_SLOT_OCCUPIED;
 }
 
 /** Test whether a key slot is locked.
diff --git a/library/psa_crypto_core_common.h b/library/psa_crypto_core_common.h
index dd72ab1..98fce2c 100644
--- a/library/psa_crypto_core_common.h
+++ b/library/psa_crypto_core_common.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_CORE_COMMON_H
diff --git a/library/psa_crypto_driver_wrappers_no_static.h b/library/psa_crypto_driver_wrappers_no_static.h
index 4985403..cd617f6 100644
--- a/library/psa_crypto_driver_wrappers_no_static.h
+++ b/library/psa_crypto_driver_wrappers_no_static.h
@@ -3,19 +3,7 @@
  *  cryptographic accelerators.
  */
 /*  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_DRIVER_WRAPPERS_NO_STATIC_H
diff --git a/library/psa_crypto_ecp.c b/library/psa_crypto_ecp.c
index 5c77865..e4a372d 100644
--- a/library/psa_crypto_ecp.c
+++ b/library/psa_crypto_ecp.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/psa_crypto_ecp.h b/library/psa_crypto_ecp.h
index f4ad3d2..a9f5d59 100644
--- a/library/psa_crypto_ecp.h
+++ b/library/psa_crypto_ecp.h
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_ECP_H
diff --git a/library/psa_crypto_ffdh.c b/library/psa_crypto_ffdh.c
index 20dfd2d..a57f02e 100644
--- a/library/psa_crypto_ffdh.c
+++ b/library/psa_crypto_ffdh.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/psa_crypto_ffdh.h b/library/psa_crypto_ffdh.h
index 67e5444..baeb928 100644
--- a/library/psa_crypto_ffdh.h
+++ b/library/psa_crypto_ffdh.h
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_FFDH_H
diff --git a/library/psa_crypto_hash.c b/library/psa_crypto_hash.c
index dad1826..eeb7666 100644
--- a/library/psa_crypto_hash.c
+++ b/library/psa_crypto_hash.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/psa_crypto_hash.h b/library/psa_crypto_hash.h
index 2dfb011..0a7be80 100644
--- a/library/psa_crypto_hash.h
+++ b/library/psa_crypto_hash.h
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_HASH_H
diff --git a/library/psa_crypto_invasive.h b/library/psa_crypto_invasive.h
index 408c39b..8b445a1 100644
--- a/library/psa_crypto_invasive.h
+++ b/library/psa_crypto_invasive.h
@@ -10,19 +10,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_INVASIVE_H
diff --git a/library/psa_crypto_its.h b/library/psa_crypto_its.h
index 3ceee49..877063b 100644
--- a/library/psa_crypto_its.h
+++ b/library/psa_crypto_its.h
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_ITS_H
diff --git a/library/psa_crypto_mac.c b/library/psa_crypto_mac.c
index 2f2c51d..8fe6218 100644
--- a/library/psa_crypto_mac.c
+++ b/library/psa_crypto_mac.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/psa_crypto_mac.h b/library/psa_crypto_mac.h
index 4f8024a..2f614bc 100644
--- a/library/psa_crypto_mac.h
+++ b/library/psa_crypto_mac.h
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_MAC_H
diff --git a/library/psa_crypto_pake.c b/library/psa_crypto_pake.c
index db00cbd..9ac2e8c 100644
--- a/library/psa_crypto_pake.c
+++ b/library/psa_crypto_pake.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/psa_crypto_pake.h b/library/psa_crypto_pake.h
index f21b0e6..3d3ee0c 100644
--- a/library/psa_crypto_pake.h
+++ b/library/psa_crypto_pake.h
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_PAKE_H
diff --git a/library/psa_crypto_random_impl.h b/library/psa_crypto_random_impl.h
index 8719d9c..64b8949 100644
--- a/library/psa_crypto_random_impl.h
+++ b/library/psa_crypto_random_impl.h
@@ -12,19 +12,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_RANDOM_IMPL_H
diff --git a/library/psa_crypto_rsa.c b/library/psa_crypto_rsa.c
index 065e55a..0679f41 100644
--- a/library/psa_crypto_rsa.c
+++ b/library/psa_crypto_rsa.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/psa_crypto_rsa.h b/library/psa_crypto_rsa.h
index bc24ef5..e4c5caf 100644
--- a/library/psa_crypto_rsa.h
+++ b/library/psa_crypto_rsa.h
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_RSA_H
diff --git a/library/psa_crypto_se.c b/library/psa_crypto_se.c
index 9db3ded..7a36a4f 100644
--- a/library/psa_crypto_se.c
+++ b/library/psa_crypto_se.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/psa_crypto_se.h b/library/psa_crypto_se.h
index 850ea8f..e0bd5ac 100644
--- a/library/psa_crypto_se.h
+++ b/library/psa_crypto_se.h
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_SE_H
diff --git a/library/psa_crypto_slot_management.c b/library/psa_crypto_slot_management.c
index 92646c0..5ecc3a7 100644
--- a/library/psa_crypto_slot_management.c
+++ b/library/psa_crypto_slot_management.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -249,11 +237,20 @@
         data = (psa_se_key_data_storage_t *) key_data;
         status = psa_copy_key_material_into_slot(
             slot, data->slot_number, sizeof(data->slot_number));
+
+        if (status == PSA_SUCCESS) {
+            slot->status = PSA_SLOT_OCCUPIED;
+        }
         goto exit;
     }
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
 
     status = psa_copy_key_material_into_slot(slot, key_data, key_data_length);
+    if (status != PSA_SUCCESS) {
+        goto exit;
+    }
+
+    slot->status = PSA_SLOT_OCCUPIED;
 
 exit:
     psa_free_persistent_key_data(key_data, key_data_length);
@@ -327,6 +324,7 @@
     /* Copy actual key length and core attributes into the slot on success */
     slot->key.bytes = key_buffer_length;
     slot->attr = attributes.core;
+    slot->status = PSA_SLOT_OCCUPIED;
 
 exit:
     if (status != PSA_SUCCESS) {
diff --git a/library/psa_crypto_slot_management.h b/library/psa_crypto_slot_management.h
index c8366ab..6041a35 100644
--- a/library/psa_crypto_slot_management.h
+++ b/library/psa_crypto_slot_management.h
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_SLOT_MANAGEMENT_H
diff --git a/library/psa_crypto_storage.c b/library/psa_crypto_storage.c
index 574d4b0..13a3c8a 100644
--- a/library/psa_crypto_storage.c
+++ b/library/psa_crypto_storage.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/psa_crypto_storage.h b/library/psa_crypto_storage.h
index 37ca46e..b6b5e15 100644
--- a/library/psa_crypto_storage.h
+++ b/library/psa_crypto_storage.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef PSA_CRYPTO_STORAGE_H
diff --git a/library/psa_its_file.c b/library/psa_its_file.c
index 9748616..9567137 100644
--- a/library/psa_its_file.c
+++ b/library/psa_its_file.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -110,14 +98,9 @@
         return PSA_ERROR_DATA_CORRUPT;
     }
 
-    p_info->size = (header.size[0] |
-                    header.size[1] << 8 |
-                    header.size[2] << 16 |
-                    header.size[3] << 24);
-    p_info->flags = (header.flags[0] |
-                     header.flags[1] << 8 |
-                     header.flags[2] << 16 |
-                     header.flags[3] << 24);
+    p_info->size  = MBEDTLS_GET_UINT32_LE(header.size, 0);
+    p_info->flags = MBEDTLS_GET_UINT32_LE(header.flags, 0);
+
     return PSA_SUCCESS;
 }
 
diff --git a/library/psa_util.c b/library/psa_util.c
index dd5e134..0225bbf 100644
--- a/library/psa_util.c
+++ b/library/psa_util.c
@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/psa_util_internal.h b/library/psa_util_internal.h
index 4a36dbf..fcc79ae 100644
--- a/library/psa_util_internal.h
+++ b/library/psa_util_internal.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_PSA_UTIL_INTERNAL_H
diff --git a/library/ripemd160.c b/library/ripemd160.c
index 49fee85..b4fc3cd 100644
--- a/library/ripemd160.c
+++ b/library/ripemd160.c
@@ -2,19 +2,7 @@
  *  RIPE MD-160 implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
diff --git a/library/rsa.c b/library/rsa.c
index 802bf5d..1bf5d13 100644
--- a/library/rsa.c
+++ b/library/rsa.c
@@ -2,19 +2,7 @@
  *  The RSA public-key cryptosystem
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
@@ -1632,12 +1620,12 @@
         goto cleanup;
     }
 
-    if (ilen - (p - buf) > output_max_len) {
+    if (ilen - ((size_t) (p - buf)) > output_max_len) {
         ret = MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE;
         goto cleanup;
     }
 
-    *olen = ilen - (p - buf);
+    *olen = ilen - ((size_t) (p - buf));
     if (*olen != 0) {
         memcpy(output, p, *olen);
     }
@@ -2203,7 +2191,7 @@
         return MBEDTLS_ERR_RSA_INVALID_PADDING;
     }
 
-    observed_salt_len = hash_start - p;
+    observed_salt_len = (size_t) (hash_start - p);
 
     if (expected_salt_len != MBEDTLS_RSA_SALT_LEN_ANY &&
         observed_salt_len != (size_t) expected_salt_len) {
diff --git a/library/rsa_alt_helpers.c b/library/rsa_alt_helpers.c
index 5cc4636..5c265a9 100644
--- a/library/rsa_alt_helpers.c
+++ b/library/rsa_alt_helpers.c
@@ -2,19 +2,7 @@
  *  Helper functions for the RSA module
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  *
  */
 
diff --git a/library/rsa_alt_helpers.h b/library/rsa_alt_helpers.h
index 3b22ba8..ca0840b 100644
--- a/library/rsa_alt_helpers.h
+++ b/library/rsa_alt_helpers.h
@@ -36,19 +36,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  *
  */
 
diff --git a/library/sha1.c b/library/sha1.c
index 28a57b6..dfbe481 100644
--- a/library/sha1.c
+++ b/library/sha1.c
@@ -2,19 +2,7 @@
  *  FIPS-180-1 compliant SHA-1 implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The SHA-1 standard was published by NIST in 1993.
diff --git a/library/sha256.c b/library/sha256.c
index c9be734..8788981 100644
--- a/library/sha256.c
+++ b/library/sha256.c
@@ -2,19 +2,7 @@
  *  FIPS-180-2 compliant SHA-256 implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The SHA-256 Secure Hash Standard was published by NIST in 2002.
diff --git a/library/sha3.c b/library/sha3.c
index 4c1a1a9..d90fefa 100644
--- a/library/sha3.c
+++ b/library/sha3.c
@@ -2,19 +2,7 @@
  *  FIPS-202 compliant SHA3 implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The SHA-3 Secure Hash Standard was published by NIST in 2015.
diff --git a/library/sha512.c b/library/sha512.c
index 05b8940..6011254 100644
--- a/library/sha512.c
+++ b/library/sha512.c
@@ -2,19 +2,7 @@
  *  FIPS-180-2 compliant SHA-384/512 implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The SHA-512 Secure Hash Standard was published by NIST in 2002.
diff --git a/library/ssl_cache.c b/library/ssl_cache.c
index 929c28b..772cb8f 100644
--- a/library/ssl_cache.c
+++ b/library/ssl_cache.c
@@ -2,19 +2,7 @@
  *  SSL session cache implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  * These session callbacks use a simple chained list
diff --git a/library/ssl_ciphersuites.c b/library/ssl_ciphersuites.c
index 95aa581..6224ef2 100644
--- a/library/ssl_ciphersuites.c
+++ b/library/ssl_ciphersuites.c
@@ -4,19 +4,7 @@
  * \brief SSL ciphersuites for Mbed TLS
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -292,7 +280,7 @@
 static const mbedtls_ssl_ciphersuite_t ciphersuite_definitions[] =
 {
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-#if defined(MBEDTLS_AES_C)
+#if defined(MBEDTLS_SSL_HAVE_AES)
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA384)
     { MBEDTLS_TLS1_3_AES_256_GCM_SHA384, "TLS1-3-AES-256-GCM-SHA384",
@@ -321,7 +309,7 @@
       MBEDTLS_CIPHERSUITE_SHORT_TAG,
       MBEDTLS_SSL_VERSION_TLS1_3, MBEDTLS_SSL_VERSION_TLS1_3 },
 #endif /* MBEDTLS_MD_CAN_SHA256 && MBEDTLS_SSL_HAVE_CCM */
-#endif /* MBEDTLS_AES_C */
+#endif /* MBEDTLS_SSL_HAVE_AES */
 #if defined(MBEDTLS_SSL_HAVE_CHACHAPOLY) && defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS1_3_CHACHA20_POLY1305_SHA256,
       "TLS1-3-CHACHA20-POLY1305-SHA256",
@@ -395,9 +383,9 @@
           MBEDTLS_MD_CAN_SHA256 &&
           MBEDTLS_SSL_PROTO_TLS1_2 */
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED)
-#if defined(MBEDTLS_AES_C)
+#if defined(MBEDTLS_SSL_HAVE_AES)
 #if defined(MBEDTLS_MD_CAN_SHA1)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, "TLS-ECDHE-ECDSA-WITH-AES-128-CBC-SHA",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA1, MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA,
       0,
@@ -406,15 +394,15 @@
       MBEDTLS_CIPHER_AES_256_CBC, MBEDTLS_MD_SHA1, MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #endif /* MBEDTLS_MD_CAN_SHA1 */
 #if defined(MBEDTLS_MD_CAN_SHA256)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, "TLS-ECDHE-ECDSA-WITH-AES-128-CBC-SHA256",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #if defined(MBEDTLS_SSL_HAVE_GCM)
     { MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, "TLS-ECDHE-ECDSA-WITH-AES-128-GCM-SHA256",
       MBEDTLS_CIPHER_AES_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA,
@@ -423,12 +411,12 @@
 #endif /* MBEDTLS_SSL_HAVE_GCM */
 #endif /* MBEDTLS_MD_CAN_SHA256 */
 #if defined(MBEDTLS_MD_CAN_SHA384)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384, "TLS-ECDHE-ECDSA-WITH-AES-256-CBC-SHA384",
       MBEDTLS_CIPHER_AES_256_CBC, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #if defined(MBEDTLS_SSL_HAVE_GCM)
     { MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, "TLS-ECDHE-ECDSA-WITH-AES-256-GCM-SHA384",
       MBEDTLS_CIPHER_AES_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA,
@@ -454,10 +442,10 @@
       MBEDTLS_CIPHERSUITE_SHORT_TAG,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_SSL_HAVE_CCM */
-#endif /* MBEDTLS_AES_C */
+#endif /* MBEDTLS_SSL_HAVE_AES */
 
-#if defined(MBEDTLS_CAMELLIA_C)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256,
       "TLS-ECDHE-ECDSA-WITH-CAMELLIA-128-CBC-SHA256",
@@ -472,7 +460,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA256)
@@ -490,7 +478,7 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
 #endif /* MBEDTLS_SSL_HAVE_GCM */
-#endif /* MBEDTLS_CAMELLIA_C */
+#endif /* MBEDTLS_SSL_HAVE_CAMELLIA */
 
 #if defined(MBEDTLS_CIPHER_NULL_CIPHER)
 #if defined(MBEDTLS_MD_CAN_SHA1)
@@ -503,9 +491,9 @@
 #endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED)
-#if defined(MBEDTLS_AES_C)
+#if defined(MBEDTLS_SSL_HAVE_AES)
 #if defined(MBEDTLS_MD_CAN_SHA1)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, "TLS-ECDHE-RSA-WITH-AES-128-CBC-SHA",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA1, MBEDTLS_KEY_EXCHANGE_ECDHE_RSA,
       0,
@@ -514,16 +502,16 @@
       MBEDTLS_CIPHER_AES_256_CBC, MBEDTLS_MD_SHA1, MBEDTLS_KEY_EXCHANGE_ECDHE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #endif /* MBEDTLS_MD_CAN_SHA1 */
 #if defined(MBEDTLS_MD_CAN_SHA256)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, "TLS-ECDHE-RSA-WITH-AES-128-CBC-SHA256",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDHE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
-#if (defined(MBEDTLS_GCM_C) || defined(PSA_WANT_ALG_GCM))
+#endif /* MBEDTLS_SSL_HAVE_CBC */
+#if defined(MBEDTLS_SSL_HAVE_GCM)
     { MBEDTLS_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, "TLS-ECDHE-RSA-WITH-AES-128-GCM-SHA256",
       MBEDTLS_CIPHER_AES_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDHE_RSA,
       0,
@@ -531,23 +519,23 @@
 #endif /* MBEDTLS_SSL_HAVE_GCM */
 #endif /* MBEDTLS_MD_CAN_SHA256 */
 #if defined(MBEDTLS_MD_CAN_SHA384)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, "TLS-ECDHE-RSA-WITH-AES-256-CBC-SHA384",
       MBEDTLS_CIPHER_AES_256_CBC, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_ECDHE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
-#if (defined(MBEDTLS_GCM_C) || defined(PSA_WANT_ALG_GCM))
+#endif /* MBEDTLS_SSL_HAVE_CBC */
+#if defined(MBEDTLS_SSL_HAVE_GCM)
     { MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, "TLS-ECDHE-RSA-WITH-AES-256-GCM-SHA384",
       MBEDTLS_CIPHER_AES_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_ECDHE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_SSL_HAVE_GCM */
 #endif /* MBEDTLS_MD_CAN_SHA384 */
-#endif /* MBEDTLS_AES_C */
+#endif /* MBEDTLS_SSL_HAVE_AES */
 
-#if defined(MBEDTLS_CAMELLIA_C)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256,
       "TLS-ECDHE-RSA-WITH-CAMELLIA-128-CBC-SHA256",
@@ -562,7 +550,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA256)
@@ -580,7 +568,7 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
 #endif /* MBEDTLS_SSL_HAVE_GCM */
-#endif /* MBEDTLS_CAMELLIA_C */
+#endif /* MBEDTLS_SSL_HAVE_CAMELLIA */
 
 #if defined(MBEDTLS_CIPHER_NULL_CIPHER)
 #if defined(MBEDTLS_MD_CAN_SHA1)
@@ -593,14 +581,14 @@
 #endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED)
-#if defined(MBEDTLS_AES_C)
+#if defined(MBEDTLS_SSL_HAVE_AES)
 #if defined(MBEDTLS_MD_CAN_SHA384) && \
     defined(MBEDTLS_SSL_HAVE_GCM)
     { MBEDTLS_TLS_DHE_RSA_WITH_AES_256_GCM_SHA384, "TLS-DHE-RSA-WITH-AES-256-GCM-SHA384",
       MBEDTLS_CIPHER_AES_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_DHE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_MD_CAN_SHA384 && MBEDTLS_GCM_C */
+#endif /* MBEDTLS_MD_CAN_SHA384 && MBEDTLS_SSL_HAVE_GCM */
 
 #if defined(MBEDTLS_MD_CAN_SHA256)
 #if defined(MBEDTLS_SSL_HAVE_GCM)
@@ -610,7 +598,7 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_SSL_HAVE_GCM */
 
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA256, "TLS-DHE-RSA-WITH-AES-128-CBC-SHA256",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_DHE_RSA,
       0,
@@ -620,10 +608,10 @@
       MBEDTLS_CIPHER_AES_256_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_DHE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #endif /* MBEDTLS_MD_CAN_SHA256 */
 
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA1)
     { MBEDTLS_TLS_DHE_RSA_WITH_AES_128_CBC_SHA, "TLS-DHE-RSA-WITH-AES-128-CBC-SHA",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA1, MBEDTLS_KEY_EXCHANGE_DHE_RSA,
@@ -635,7 +623,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA1 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #if defined(MBEDTLS_SSL_HAVE_CCM)
     { MBEDTLS_TLS_DHE_RSA_WITH_AES_256_CCM, "TLS-DHE-RSA-WITH-AES-256-CCM",
       MBEDTLS_CIPHER_AES_256_CCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_DHE_RSA,
@@ -654,10 +642,10 @@
       MBEDTLS_CIPHERSUITE_SHORT_TAG,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_SSL_HAVE_CCM */
-#endif /* MBEDTLS_AES_C */
+#endif /* MBEDTLS_SSL_HAVE_AES */
 
-#if defined(MBEDTLS_CAMELLIA_C)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256, "TLS-DHE-RSA-WITH-CAMELLIA-128-CBC-SHA256",
       MBEDTLS_CIPHER_CAMELLIA_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_DHE_RSA,
@@ -681,7 +669,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA1 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256, "TLS-DHE-RSA-WITH-CAMELLIA-128-GCM-SHA256",
@@ -697,19 +685,19 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
 #endif /* MBEDTLS_SSL_HAVE_GCM */
-#endif /* MBEDTLS_CAMELLIA_C */
+#endif /* MBEDTLS_SSL_HAVE_CAMELLIA */
 
 #endif /* MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_RSA_ENABLED)
-#if defined(MBEDTLS_AES_C)
+#if defined(MBEDTLS_SSL_HAVE_AES)
 #if defined(MBEDTLS_MD_CAN_SHA384) && \
     defined(MBEDTLS_SSL_HAVE_GCM)
     { MBEDTLS_TLS_RSA_WITH_AES_256_GCM_SHA384, "TLS-RSA-WITH-AES-256-GCM-SHA384",
       MBEDTLS_CIPHER_AES_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_MD_CAN_SHA384 && MBEDTLS_GCM_C */
+#endif /* MBEDTLS_MD_CAN_SHA384 && MBEDTLS_SSL_HAVE_GCM */
 
 #if defined(MBEDTLS_MD_CAN_SHA256)
 #if defined(MBEDTLS_SSL_HAVE_GCM)
@@ -719,7 +707,7 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_SSL_HAVE_GCM */
 
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA256, "TLS-RSA-WITH-AES-128-CBC-SHA256",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_RSA,
       0,
@@ -729,11 +717,11 @@
       MBEDTLS_CIPHER_AES_256_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #endif /* MBEDTLS_MD_CAN_SHA256 */
 
 #if defined(MBEDTLS_MD_CAN_SHA1)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_RSA_WITH_AES_128_CBC_SHA, "TLS-RSA-WITH-AES-128-CBC-SHA",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA1, MBEDTLS_KEY_EXCHANGE_RSA,
       0,
@@ -743,7 +731,7 @@
       MBEDTLS_CIPHER_AES_256_CBC, MBEDTLS_MD_SHA1, MBEDTLS_KEY_EXCHANGE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #endif /* MBEDTLS_MD_CAN_SHA1 */
 #if defined(MBEDTLS_SSL_HAVE_CCM)
     { MBEDTLS_TLS_RSA_WITH_AES_256_CCM, "TLS-RSA-WITH-AES-256-CCM",
@@ -763,10 +751,10 @@
       MBEDTLS_CIPHERSUITE_SHORT_TAG,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_SSL_HAVE_CCM */
-#endif /* MBEDTLS_AES_C */
+#endif /* MBEDTLS_SSL_HAVE_AES */
 
-#if defined(MBEDTLS_CAMELLIA_C)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256, "TLS-RSA-WITH-CAMELLIA-128-CBC-SHA256",
       MBEDTLS_CIPHER_CAMELLIA_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_RSA,
@@ -790,7 +778,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA1 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA256)
@@ -807,14 +795,14 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
 #endif /* MBEDTLS_SSL_HAVE_GCM */
-#endif /* MBEDTLS_CAMELLIA_C */
+#endif /* MBEDTLS_SSL_HAVE_CAMELLIA */
 
 #endif /* MBEDTLS_KEY_EXCHANGE_RSA_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED)
-#if defined(MBEDTLS_AES_C)
+#if defined(MBEDTLS_SSL_HAVE_AES)
 #if defined(MBEDTLS_MD_CAN_SHA1)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA, "TLS-ECDH-RSA-WITH-AES-128-CBC-SHA",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA1, MBEDTLS_KEY_EXCHANGE_ECDH_RSA,
       0,
@@ -823,15 +811,15 @@
       MBEDTLS_CIPHER_AES_256_CBC, MBEDTLS_MD_SHA1, MBEDTLS_KEY_EXCHANGE_ECDH_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #endif /* MBEDTLS_MD_CAN_SHA1 */
 #if defined(MBEDTLS_MD_CAN_SHA256)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256, "TLS-ECDH-RSA-WITH-AES-128-CBC-SHA256",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDH_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #if defined(MBEDTLS_SSL_HAVE_GCM)
     { MBEDTLS_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256, "TLS-ECDH-RSA-WITH-AES-128-GCM-SHA256",
       MBEDTLS_CIPHER_AES_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDH_RSA,
@@ -840,12 +828,12 @@
 #endif /* MBEDTLS_SSL_HAVE_GCM */
 #endif /* MBEDTLS_MD_CAN_SHA256 */
 #if defined(MBEDTLS_MD_CAN_SHA384)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384, "TLS-ECDH-RSA-WITH-AES-256-CBC-SHA384",
       MBEDTLS_CIPHER_AES_256_CBC, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_ECDH_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #if defined(MBEDTLS_SSL_HAVE_GCM)
     { MBEDTLS_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384, "TLS-ECDH-RSA-WITH-AES-256-GCM-SHA384",
       MBEDTLS_CIPHER_AES_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_ECDH_RSA,
@@ -853,10 +841,10 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_SSL_HAVE_GCM */
 #endif /* MBEDTLS_MD_CAN_SHA384 */
-#endif /* MBEDTLS_AES_C */
+#endif /* MBEDTLS_SSL_HAVE_AES */
 
-#if defined(MBEDTLS_CAMELLIA_C)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256,
       "TLS-ECDH-RSA-WITH-CAMELLIA-128-CBC-SHA256",
@@ -871,7 +859,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA256)
@@ -889,7 +877,7 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
 #endif /* MBEDTLS_SSL_HAVE_GCM */
-#endif /* MBEDTLS_CAMELLIA_C */
+#endif /* MBEDTLS_SSL_HAVE_CAMELLIA */
 
 #if defined(MBEDTLS_CIPHER_NULL_CIPHER)
 #if defined(MBEDTLS_MD_CAN_SHA1)
@@ -902,9 +890,9 @@
 #endif /* MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED)
-#if defined(MBEDTLS_AES_C)
+#if defined(MBEDTLS_SSL_HAVE_AES)
 #if defined(MBEDTLS_MD_CAN_SHA1)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA, "TLS-ECDH-ECDSA-WITH-AES-128-CBC-SHA",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA1, MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA,
       0,
@@ -913,15 +901,15 @@
       MBEDTLS_CIPHER_AES_256_CBC, MBEDTLS_MD_SHA1, MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #endif /* MBEDTLS_MD_CAN_SHA1 */
 #if defined(MBEDTLS_MD_CAN_SHA256)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256, "TLS-ECDH-ECDSA-WITH-AES-128-CBC-SHA256",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #if defined(MBEDTLS_SSL_HAVE_GCM)
     { MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256, "TLS-ECDH-ECDSA-WITH-AES-128-GCM-SHA256",
       MBEDTLS_CIPHER_AES_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA,
@@ -930,12 +918,12 @@
 #endif /* MBEDTLS_SSL_HAVE_GCM */
 #endif /* MBEDTLS_MD_CAN_SHA256 */
 #if defined(MBEDTLS_MD_CAN_SHA384)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
     { MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384, "TLS-ECDH-ECDSA-WITH-AES-256-CBC-SHA384",
       MBEDTLS_CIPHER_AES_256_CBC, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #if defined(MBEDTLS_SSL_HAVE_GCM)
     { MBEDTLS_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384, "TLS-ECDH-ECDSA-WITH-AES-256-GCM-SHA384",
       MBEDTLS_CIPHER_AES_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA,
@@ -943,10 +931,10 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_SSL_HAVE_GCM */
 #endif /* MBEDTLS_MD_CAN_SHA384 */
-#endif /* MBEDTLS_AES_C */
+#endif /* MBEDTLS_SSL_HAVE_AES */
 
-#if defined(MBEDTLS_CAMELLIA_C)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256,
       "TLS-ECDH-ECDSA-WITH-CAMELLIA-128-CBC-SHA256",
@@ -961,7 +949,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA256)
@@ -979,7 +967,7 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
 #endif /* MBEDTLS_SSL_HAVE_GCM */
-#endif /* MBEDTLS_CAMELLIA_C */
+#endif /* MBEDTLS_SSL_HAVE_CAMELLIA */
 
 #if defined(MBEDTLS_CIPHER_NULL_CIPHER)
 #if defined(MBEDTLS_MD_CAN_SHA1)
@@ -992,7 +980,7 @@
 #endif /* MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_PSK_ENABLED)
-#if defined(MBEDTLS_AES_C)
+#if defined(MBEDTLS_SSL_HAVE_AES)
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_PSK_WITH_AES_128_GCM_SHA256, "TLS-PSK-WITH-AES-128-GCM-SHA256",
@@ -1009,7 +997,7 @@
 #endif /* MBEDTLS_MD_CAN_SHA384 */
 #endif /* MBEDTLS_SSL_HAVE_GCM */
 
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_PSK_WITH_AES_128_CBC_SHA256, "TLS-PSK-WITH-AES-128-CBC-SHA256",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_PSK,
@@ -1035,7 +1023,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA1 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #if defined(MBEDTLS_SSL_HAVE_CCM)
     { MBEDTLS_TLS_PSK_WITH_AES_256_CCM, "TLS-PSK-WITH-AES-256-CCM",
       MBEDTLS_CIPHER_AES_256_CCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_PSK,
@@ -1054,10 +1042,10 @@
       MBEDTLS_CIPHERSUITE_SHORT_TAG,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_SSL_HAVE_CCM */
-#endif /* MBEDTLS_AES_C */
+#endif /* MBEDTLS_SSL_HAVE_AES */
 
-#if defined(MBEDTLS_CAMELLIA_C)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256, "TLS-PSK-WITH-CAMELLIA-128-CBC-SHA256",
       MBEDTLS_CIPHER_CAMELLIA_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_PSK,
@@ -1071,7 +1059,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA256)
@@ -1088,12 +1076,12 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
 #endif /* MBEDTLS_SSL_HAVE_GCM */
-#endif /* MBEDTLS_CAMELLIA_C */
+#endif /* MBEDTLS_SSL_HAVE_CAMELLIA */
 
 #endif /* MBEDTLS_KEY_EXCHANGE_PSK_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED)
-#if defined(MBEDTLS_AES_C)
+#if defined(MBEDTLS_SSL_HAVE_AES)
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_DHE_PSK_WITH_AES_128_GCM_SHA256, "TLS-DHE-PSK-WITH-AES-128-GCM-SHA256",
@@ -1110,7 +1098,7 @@
 #endif /* MBEDTLS_MD_CAN_SHA384 */
 #endif /* MBEDTLS_SSL_HAVE_GCM */
 
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_DHE_PSK_WITH_AES_128_CBC_SHA256, "TLS-DHE-PSK-WITH-AES-128-CBC-SHA256",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_DHE_PSK,
@@ -1136,7 +1124,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA1 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 #if defined(MBEDTLS_SSL_HAVE_CCM)
     { MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CCM, "TLS-DHE-PSK-WITH-AES-256-CCM",
       MBEDTLS_CIPHER_AES_256_CCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_DHE_PSK,
@@ -1155,10 +1143,10 @@
       MBEDTLS_CIPHERSUITE_SHORT_TAG,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_SSL_HAVE_CCM */
-#endif /* MBEDTLS_AES_C */
+#endif /* MBEDTLS_SSL_HAVE_AES */
 
-#if defined(MBEDTLS_CAMELLIA_C)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256, "TLS-DHE-PSK-WITH-CAMELLIA-128-CBC-SHA256",
       MBEDTLS_CIPHER_CAMELLIA_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_DHE_PSK,
@@ -1172,7 +1160,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA256)
@@ -1189,14 +1177,14 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
 #endif /* MBEDTLS_SSL_HAVE_GCM */
-#endif /* MBEDTLS_CAMELLIA_C */
+#endif /* MBEDTLS_SSL_HAVE_CAMELLIA */
 
 #endif /* MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED)
-#if defined(MBEDTLS_AES_C)
+#if defined(MBEDTLS_SSL_HAVE_AES)
 
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256, "TLS-ECDHE-PSK-WITH-AES-128-CBC-SHA256",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDHE_PSK,
@@ -1222,11 +1210,11 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA1 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
-#endif /* MBEDTLS_AES_C */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_AES */
 
-#if defined(MBEDTLS_CAMELLIA_C)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256,
       "TLS-ECDHE-PSK-WITH-CAMELLIA-128-CBC-SHA256",
@@ -1242,13 +1230,13 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
-#endif /* MBEDTLS_CAMELLIA_C */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CAMELLIA */
 
 #endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED)
-#if defined(MBEDTLS_AES_C)
+#if defined(MBEDTLS_SSL_HAVE_AES)
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_RSA_PSK_WITH_AES_128_GCM_SHA256, "TLS-RSA-PSK-WITH-AES-128-GCM-SHA256",
@@ -1265,7 +1253,7 @@
 #endif /* MBEDTLS_MD_CAN_SHA384 */
 #endif /* MBEDTLS_SSL_HAVE_GCM */
 
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_RSA_PSK_WITH_AES_128_CBC_SHA256, "TLS-RSA-PSK-WITH-AES-128-CBC-SHA256",
       MBEDTLS_CIPHER_AES_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_RSA_PSK,
@@ -1291,11 +1279,11 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA1 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
-#endif /* MBEDTLS_AES_C */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_AES */
 
-#if defined(MBEDTLS_CAMELLIA_C)
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #if defined(MBEDTLS_MD_CAN_SHA256)
     { MBEDTLS_TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256, "TLS-RSA-PSK-WITH-CAMELLIA-128-CBC-SHA256",
       MBEDTLS_CIPHER_CAMELLIA_128_CBC, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_RSA_PSK,
@@ -1309,7 +1297,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
-#endif /* MBEDTLS_CIPHER_MODE_CBC */
+#endif /* MBEDTLS_SSL_HAVE_CBC */
 
 #if defined(MBEDTLS_SSL_HAVE_GCM)
 #if defined(MBEDTLS_MD_CAN_SHA256)
@@ -1326,19 +1314,19 @@
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_MD_CAN_SHA384 */
 #endif /* MBEDTLS_SSL_HAVE_GCM */
-#endif /* MBEDTLS_CAMELLIA_C */
+#endif /* MBEDTLS_SSL_HAVE_CAMELLIA */
 
 #endif /* MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-#if defined(MBEDTLS_AES_C)
+#if defined(MBEDTLS_SSL_HAVE_AES)
 #if defined(MBEDTLS_SSL_HAVE_CCM)
     { MBEDTLS_TLS_ECJPAKE_WITH_AES_128_CCM_8, "TLS-ECJPAKE-WITH-AES-128-CCM-8",
       MBEDTLS_CIPHER_AES_128_CCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECJPAKE,
       MBEDTLS_CIPHERSUITE_SHORT_TAG,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif /* MBEDTLS_SSL_HAVE_CCM */
-#endif /* MBEDTLS_AES_C */
+#endif /* MBEDTLS_SSL_HAVE_AES */
 #endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
 
 #if defined(MBEDTLS_CIPHER_NULL_CIPHER)
@@ -1458,18 +1446,18 @@
 #endif /* MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED */
 #endif /* MBEDTLS_CIPHER_NULL_CIPHER */
 
-#if defined(MBEDTLS_ARIA_C)
+#if defined(MBEDTLS_SSL_HAVE_ARIA)
 
 #if defined(MBEDTLS_KEY_EXCHANGE_RSA_ENABLED)
 
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA384))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_RSA_WITH_ARIA_256_GCM_SHA384,
       "TLS-RSA-WITH-ARIA-256-GCM-SHA384",
       MBEDTLS_CIPHER_ARIA_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_RSA_WITH_ARIA_256_CBC_SHA384,
       "TLS-RSA-WITH-ARIA-256-CBC-SHA384",
@@ -1477,14 +1465,14 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA256))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_RSA_WITH_ARIA_128_GCM_SHA256,
       "TLS-RSA-WITH-ARIA-128-GCM-SHA256",
       MBEDTLS_CIPHER_ARIA_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_RSA_WITH_ARIA_128_CBC_SHA256,
       "TLS-RSA-WITH-ARIA-128-CBC-SHA256",
@@ -1497,14 +1485,14 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED)
 
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA384))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_RSA_PSK_WITH_ARIA_256_GCM_SHA384,
       "TLS-RSA-PSK-WITH-ARIA-256-GCM-SHA384",
       MBEDTLS_CIPHER_ARIA_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_RSA_PSK,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_RSA_PSK_WITH_ARIA_256_CBC_SHA384,
       "TLS-RSA-PSK-WITH-ARIA-256-CBC-SHA384",
@@ -1512,14 +1500,14 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA256))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_RSA_PSK_WITH_ARIA_128_GCM_SHA256,
       "TLS-RSA-PSK-WITH-ARIA-128-GCM-SHA256",
       MBEDTLS_CIPHER_ARIA_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_RSA_PSK,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_RSA_PSK_WITH_ARIA_128_CBC_SHA256,
       "TLS-RSA-PSK-WITH-ARIA-128-CBC-SHA256",
@@ -1532,14 +1520,14 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_PSK_ENABLED)
 
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA384))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_PSK_WITH_ARIA_256_GCM_SHA384,
       "TLS-PSK-WITH-ARIA-256-GCM-SHA384",
       MBEDTLS_CIPHER_ARIA_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_PSK,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_PSK_WITH_ARIA_256_CBC_SHA384,
       "TLS-PSK-WITH-ARIA-256-CBC-SHA384",
@@ -1547,14 +1535,14 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA256))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_PSK_WITH_ARIA_128_GCM_SHA256,
       "TLS-PSK-WITH-ARIA-128-GCM-SHA256",
       MBEDTLS_CIPHER_ARIA_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_PSK,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_PSK_WITH_ARIA_128_CBC_SHA256,
       "TLS-PSK-WITH-ARIA-128-CBC-SHA256",
@@ -1567,14 +1555,14 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED)
 
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA384))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_256_GCM_SHA384,
       "TLS-ECDH-RSA-WITH-ARIA-256-GCM-SHA384",
       MBEDTLS_CIPHER_ARIA_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_ECDH_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_256_CBC_SHA384,
       "TLS-ECDH-RSA-WITH-ARIA-256-CBC-SHA384",
@@ -1582,14 +1570,14 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA256))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_128_GCM_SHA256,
       "TLS-ECDH-RSA-WITH-ARIA-128-GCM-SHA256",
       MBEDTLS_CIPHER_ARIA_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDH_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_ECDH_RSA_WITH_ARIA_128_CBC_SHA256,
       "TLS-ECDH-RSA-WITH-ARIA-128-CBC-SHA256",
@@ -1602,14 +1590,14 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED)
 
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA384))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384,
       "TLS-ECDHE-RSA-WITH-ARIA-256-GCM-SHA384",
       MBEDTLS_CIPHER_ARIA_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_ECDHE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_256_CBC_SHA384,
       "TLS-ECDHE-RSA-WITH-ARIA-256-CBC-SHA384",
@@ -1617,14 +1605,14 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA256))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256,
       "TLS-ECDHE-RSA-WITH-ARIA-128-GCM-SHA256",
       MBEDTLS_CIPHER_ARIA_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDHE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_ECDHE_RSA_WITH_ARIA_128_CBC_SHA256,
       "TLS-ECDHE-RSA-WITH-ARIA-128-CBC-SHA256",
@@ -1637,7 +1625,7 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED)
 
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_ECDHE_PSK_WITH_ARIA_256_CBC_SHA384,
       "TLS-ECDHE-PSK-WITH-ARIA-256-CBC-SHA384",
@@ -1645,7 +1633,7 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_ECDHE_PSK_WITH_ARIA_128_CBC_SHA256,
       "TLS-ECDHE-PSK-WITH-ARIA-128-CBC-SHA256",
@@ -1658,14 +1646,14 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED)
 
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA384))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384,
       "TLS-ECDHE-ECDSA-WITH-ARIA-256-GCM-SHA384",
       MBEDTLS_CIPHER_ARIA_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_256_CBC_SHA384,
       "TLS-ECDHE-ECDSA-WITH-ARIA-256-CBC-SHA384",
@@ -1673,14 +1661,14 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA256))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256,
       "TLS-ECDHE-ECDSA-WITH-ARIA-128-GCM-SHA256",
       MBEDTLS_CIPHER_ARIA_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_ECDHE_ECDSA_WITH_ARIA_128_CBC_SHA256,
       "TLS-ECDHE-ECDSA-WITH-ARIA-128-CBC-SHA256",
@@ -1693,14 +1681,14 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED)
 
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA384))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_256_GCM_SHA384,
       "TLS-ECDH-ECDSA-WITH-ARIA-256-GCM-SHA384",
       MBEDTLS_CIPHER_ARIA_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_256_CBC_SHA384,
       "TLS-ECDH-ECDSA-WITH-ARIA-256-CBC-SHA384",
@@ -1708,14 +1696,14 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA256))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_128_GCM_SHA256,
       "TLS-ECDH-ECDSA-WITH-ARIA-128-GCM-SHA256",
       MBEDTLS_CIPHER_ARIA_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_ECDH_ECDSA_WITH_ARIA_128_CBC_SHA256,
       "TLS-ECDH-ECDSA-WITH-ARIA-128-CBC-SHA256",
@@ -1728,14 +1716,14 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED)
 
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA384))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384,
       "TLS-DHE-RSA-WITH-ARIA-256-GCM-SHA384",
       MBEDTLS_CIPHER_ARIA_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_DHE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_DHE_RSA_WITH_ARIA_256_CBC_SHA384,
       "TLS-DHE-RSA-WITH-ARIA-256-CBC-SHA384",
@@ -1743,14 +1731,14 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA256))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256,
       "TLS-DHE-RSA-WITH-ARIA-128-GCM-SHA256",
       MBEDTLS_CIPHER_ARIA_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_DHE_RSA,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_DHE_RSA_WITH_ARIA_128_CBC_SHA256,
       "TLS-DHE-RSA-WITH-ARIA-128-CBC-SHA256",
@@ -1763,14 +1751,14 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED)
 
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA384))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_DHE_PSK_WITH_ARIA_256_GCM_SHA384,
       "TLS-DHE-PSK-WITH-ARIA-256-GCM-SHA384",
       MBEDTLS_CIPHER_ARIA_256_GCM, MBEDTLS_MD_SHA384, MBEDTLS_KEY_EXCHANGE_DHE_PSK,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA384))
     { MBEDTLS_TLS_DHE_PSK_WITH_ARIA_256_CBC_SHA384,
       "TLS-DHE-PSK-WITH-ARIA-256-CBC-SHA384",
@@ -1778,14 +1766,14 @@
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_GCM_C) && defined(MBEDTLS_MD_CAN_SHA256))
+#if (defined(MBEDTLS_SSL_HAVE_GCM) && defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_DHE_PSK_WITH_ARIA_128_GCM_SHA256,
       "TLS-DHE-PSK-WITH-ARIA-128-GCM-SHA256",
       MBEDTLS_CIPHER_ARIA_128_GCM, MBEDTLS_MD_SHA256, MBEDTLS_KEY_EXCHANGE_DHE_PSK,
       0,
       MBEDTLS_SSL_VERSION_TLS1_2, MBEDTLS_SSL_VERSION_TLS1_2 },
 #endif
-#if (defined(MBEDTLS_CIPHER_MODE_CBC) && \
+#if (defined(MBEDTLS_SSL_HAVE_CBC) && \
     defined(MBEDTLS_MD_CAN_SHA256))
     { MBEDTLS_TLS_DHE_PSK_WITH_ARIA_128_CBC_SHA256,
       "TLS-DHE-PSK-WITH-ARIA-128-CBC-SHA256",
@@ -1796,7 +1784,7 @@
 
 #endif /* MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED */
 
-#endif /* MBEDTLS_ARIA_C */
+#endif /* MBEDTLS_SSL_HAVE_ARIA */
 
 
     { 0, "",
diff --git a/library/ssl_client.c b/library/ssl_client.c
index 1a56f1e..55fe352 100644
--- a/library/ssl_client.c
+++ b/library/ssl_client.c
@@ -2,21 +2,7 @@
  *  TLS 1.2 and 1.3 client-side functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
- *  This file is part of Mbed TLS ( https://tls.mbed.org )
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -169,7 +155,7 @@
         p += protocol_name_len;
     }
 
-    *out_len = p - buf;
+    *out_len = (size_t) (p - buf);
 
     /* List length = *out_len - 2 (ext_type) - 2 (ext_len) - 2 (list_len) */
     MBEDTLS_PUT_UINT16_BE(*out_len - 6, buf, 4);
@@ -299,7 +285,7 @@
     }
 
     /* Length of named_group_list */
-    named_group_list_len = p - named_group_list;
+    named_group_list_len = (size_t) (p - named_group_list);
     if (named_group_list_len == 0) {
         MBEDTLS_SSL_DEBUG_MSG(1, ("No group available."));
         return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
@@ -315,7 +301,7 @@
     MBEDTLS_SSL_DEBUG_BUF(3, "Supported groups extension",
                           buf + 4, named_group_list_len + 2);
 
-    *out_len = p - buf;
+    *out_len = (size_t) (p - buf);
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     mbedtls_ssl_tls13_set_hs_sent_ext_mask(
@@ -405,14 +391,14 @@
     }
 
     /* Write the cipher_suites length in number of bytes */
-    cipher_suites_len = p - cipher_suites;
+    cipher_suites_len = (size_t) (p - cipher_suites);
     MBEDTLS_PUT_UINT16_BE(cipher_suites_len, buf, 0);
     MBEDTLS_SSL_DEBUG_MSG(3,
                           ("client hello, got %" MBEDTLS_PRINTF_SIZET " cipher suites",
                            cipher_suites_len/2));
 
     /* Output the total length of cipher_suites field. */
-    *out_len = p - buf;
+    *out_len = (size_t) (p - buf);
 
     return 0;
 }
@@ -693,7 +679,7 @@
 #endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_PSK_ENABLED */
 
     /* Write the length of the list of extensions. */
-    extensions_len = p - p_extensions_len - 2;
+    extensions_len = (size_t) (p - p_extensions_len) - 2;
 
     if (extensions_len == 0) {
         p = p_extensions_len;
@@ -705,12 +691,7 @@
                               p_extensions_len, extensions_len);
     }
 
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-    MBEDTLS_SSL_PRINT_EXTS(
-        3, MBEDTLS_SSL_HS_CLIENT_HELLO, handshake->sent_extensions);
-#endif
-
-    *out_len = p - buf;
+    *out_len = (size_t) (p - buf);
     return 0;
 }
 
@@ -770,10 +751,9 @@
     if (ssl->handshake->resume != 0 &&
         session_negotiate->tls_version == MBEDTLS_SSL_VERSION_TLS1_3 &&
         session_negotiate->ticket != NULL) {
-        mbedtls_time_t now = mbedtls_time(NULL);
-        uint64_t age = (uint64_t) (now - session_negotiate->ticket_received);
-        if (session_negotiate->ticket_received > now ||
-            age > session_negotiate->ticket_lifetime) {
+        mbedtls_ms_time_t now = mbedtls_ms_time();
+        mbedtls_ms_time_t age = now - session_negotiate->ticket_reception_time;
+        if (age < 0 || age > session_negotiate->ticket_lifetime * 1000) {
             /* Without valid ticket, disable session resumption.*/
             MBEDTLS_SSL_DEBUG_MSG(
                 3, ("Ticket expired, disable session resumption"));
@@ -1021,6 +1001,11 @@
 #endif
     }
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+    MBEDTLS_SSL_PRINT_EXTS(
+        3, MBEDTLS_SSL_HS_CLIENT_HELLO, ssl->handshake->sent_extensions);
+#endif
+
 cleanup:
 
     MBEDTLS_SSL_DEBUG_MSG(2, ("<= write client hello"));
diff --git a/library/ssl_client.h b/library/ssl_client.h
index f57bea3..05ee7e4 100644
--- a/library/ssl_client.h
+++ b/library/ssl_client.h
@@ -2,19 +2,7 @@
  *  TLS 1.2 and 1.3 client-side functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_SSL_CLIENT_H
diff --git a/library/ssl_cookie.c b/library/ssl_cookie.c
index 098aced..ee81eb4 100644
--- a/library/ssl_cookie.c
+++ b/library/ssl_cookie.c
@@ -2,19 +2,7 @@
  *  DTLS cookie callbacks implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  * These session callbacks use a simple chained list
diff --git a/library/ssl_debug_helpers.h b/library/ssl_debug_helpers.h
index 5c22ed2..2b0e737 100644
--- a/library/ssl_debug_helpers.h
+++ b/library/ssl_debug_helpers.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_SSL_DEBUG_HELPERS_H
diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 2d78fd4..eae192b 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -5,19 +5,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef MBEDTLS_SSL_MISC_H
 #define MBEDTLS_SSL_MISC_H
@@ -264,11 +252,10 @@
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
 
 /* This macro determines whether CBC is supported. */
-#if defined(MBEDTLS_CIPHER_MODE_CBC) &&                               \
-    (defined(MBEDTLS_AES_C)      ||                                  \
-    defined(MBEDTLS_CAMELLIA_C) ||                                  \
-    defined(MBEDTLS_ARIA_C)     ||                                  \
-    defined(MBEDTLS_DES_C))
+#if defined(MBEDTLS_SSL_HAVE_CBC)      &&                                  \
+    (defined(MBEDTLS_SSL_HAVE_AES)     ||                                  \
+    defined(MBEDTLS_SSL_HAVE_CAMELLIA) ||                                  \
+    defined(MBEDTLS_SSL_HAVE_ARIA))
 #define MBEDTLS_SSL_SOME_SUITES_USE_CBC
 #endif
 
@@ -311,7 +298,7 @@
 #define MBEDTLS_SSL_MAC_ADD                 16
 #endif
 
-#if defined(MBEDTLS_CIPHER_MODE_CBC)
+#if defined(MBEDTLS_SSL_HAVE_CBC)
 #define MBEDTLS_SSL_PADDING_ADD            256
 #else
 #define MBEDTLS_SSL_PADDING_ADD              0
@@ -1422,7 +1409,7 @@
  * Write handshake message header
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-int mbedtls_ssl_start_handshake_msg(mbedtls_ssl_context *ssl, unsigned hs_type,
+int mbedtls_ssl_start_handshake_msg(mbedtls_ssl_context *ssl, unsigned char hs_type,
                                     unsigned char **buf, size_t *buf_len);
 
 MBEDTLS_CHECK_RETURN_CRITICAL
@@ -2778,6 +2765,9 @@
 #endif
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3) && defined(MBEDTLS_SSL_SESSION_TICKETS)
+
+#define MBEDTLS_SSL_TLS1_3_MAX_ALLOWED_TICKET_LIFETIME (604800)
+
 static inline unsigned int mbedtls_ssl_session_get_ticket_flags(
     mbedtls_ssl_session *session, unsigned int flags)
 {
@@ -2785,6 +2775,26 @@
            (flags & MBEDTLS_SSL_TLS1_3_TICKET_FLAGS_MASK);
 }
 
+static inline unsigned int mbedtls_ssl_session_check_ticket_flags(
+    mbedtls_ssl_session *session, unsigned int flags)
+{
+    return mbedtls_ssl_session_get_ticket_flags(session, flags) == 0;
+}
+
+static inline unsigned int mbedtls_ssl_session_ticket_allow_psk(
+    mbedtls_ssl_session *session)
+{
+    return !mbedtls_ssl_session_check_ticket_flags(session,
+                                                   MBEDTLS_SSL_TLS1_3_TICKET_ALLOW_PSK_RESUMPTION);
+}
+
+static inline unsigned int mbedtls_ssl_session_ticket_allow_psk_ephemeral(
+    mbedtls_ssl_session *session)
+{
+    return !mbedtls_ssl_session_check_ticket_flags(session,
+                                                   MBEDTLS_SSL_TLS1_3_TICKET_ALLOW_PSK_EPHEMERAL_RESUMPTION);
+}
+
 static inline void mbedtls_ssl_session_set_ticket_flags(
     mbedtls_ssl_session *session, unsigned int flags)
 {
diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index 12b8f9b..48d0a03 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -3,19 +3,7 @@
  *  (record layer + retransmission state machine)
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  http://www.ietf.org/rfc/rfc2246.txt
@@ -860,7 +848,7 @@
         cur += 2;
     }
 
-    *add_data_len = cur - add_data;
+    *add_data_len = (size_t) (cur - add_data);
 }
 
 #if defined(MBEDTLS_SSL_HAVE_AEAD)
@@ -1224,7 +1212,7 @@
                                                    iv, transform->ivlen,
                                                    add_data, add_data_len,
                                                    data, rec->data_len, /* src */
-                                                   data, rec->buf_len - (data - rec->buf), /* dst */
+                                                   data, rec->buf_len - (size_t) (data - rec->buf), /* dst */
                                                    &rec->data_len,
                                                    transform->taglen)) != 0) {
             MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_cipher_auth_encrypt_ext", ret);
@@ -1647,12 +1635,13 @@
             return ret;
         }
 #else
-        if ((ret = mbedtls_cipher_auth_decrypt_ext(&transform->cipher_ctx_dec,
-                                                   iv, transform->ivlen,
-                                                   add_data, add_data_len,
-                                                   data, rec->data_len + transform->taglen, /* src */
-                                                   data, rec->buf_len - (data - rec->buf), &olen, /* dst */
-                                                   transform->taglen)) != 0) {
+        if ((ret = mbedtls_cipher_auth_decrypt_ext
+                       (&transform->cipher_ctx_dec,
+                       iv, transform->ivlen,
+                       add_data, add_data_len,
+                       data, rec->data_len + transform->taglen, /* src */
+                       data, rec->buf_len - (size_t) (data - rec->buf), &olen, /* dst */
+                       transform->taglen)) != 0) {
             MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_cipher_auth_decrypt_ext", ret);
 
             if (ret == MBEDTLS_ERR_CIPHER_AUTH_FAILED) {
@@ -2240,7 +2229,7 @@
             MBEDTLS_SSL_DEBUG_MSG(2, ("timer has expired"));
             ret = MBEDTLS_ERR_SSL_TIMEOUT;
         } else {
-            len = in_buf_len - (ssl->in_hdr - ssl->in_buf);
+            len = in_buf_len - (size_t) (ssl->in_hdr - ssl->in_buf);
 
             if (mbedtls_ssl_is_handshake_over(ssl) == 0) {
                 timeout = ssl->handshake->retransmit_timeout;
@@ -2604,7 +2593,7 @@
         } else {
             const unsigned char * const p = ssl->handshake->cur_msg_p;
             const size_t hs_len = cur->len - 12;
-            const size_t frag_off = p - (cur->p + 12);
+            const size_t frag_off = (size_t) (p - (cur->p + 12));
             const size_t rem_len = hs_len - frag_off;
             size_t cur_hs_frag_len, max_hs_frag_len;
 
@@ -2742,7 +2731,7 @@
 /*
  * Handshake layer functions
  */
-int mbedtls_ssl_start_handshake_msg(mbedtls_ssl_context *ssl, unsigned hs_type,
+int mbedtls_ssl_start_handshake_msg(mbedtls_ssl_context *ssl, unsigned char hs_type,
                                     unsigned char **buf, size_t *buf_len)
 {
     /*
@@ -2981,9 +2970,9 @@
             mbedtls_record rec;
 
             rec.buf         = ssl->out_iv;
-            rec.buf_len     = out_buf_len - (ssl->out_iv - ssl->out_buf);
+            rec.buf_len     = out_buf_len - (size_t) (ssl->out_iv - ssl->out_buf);
             rec.data_len    = ssl->out_msglen;
-            rec.data_offset = ssl->out_msg - rec.buf;
+            rec.data_offset = (size_t) (ssl->out_msg - rec.buf);
 
             memcpy(&rec.ctr[0], ssl->out_ctr, sizeof(rec.ctr));
             mbedtls_ssl_write_version(rec.ver, ssl->conf->transport, tls_ver);
@@ -3108,16 +3097,12 @@
 
 static uint32_t ssl_get_hs_frag_len(mbedtls_ssl_context const *ssl)
 {
-    return (ssl->in_msg[9] << 16) |
-           (ssl->in_msg[10] << 8) |
-           ssl->in_msg[11];
+    return MBEDTLS_GET_UINT24_BE(ssl->in_msg, 9);
 }
 
 static uint32_t ssl_get_hs_frag_off(mbedtls_ssl_context const *ssl)
 {
-    return (ssl->in_msg[6] << 16) |
-           (ssl->in_msg[7] << 8) |
-           ssl->in_msg[8];
+    return MBEDTLS_GET_UINT24_BE(ssl->in_msg, 6);
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
@@ -3230,9 +3215,7 @@
 
 static uint32_t ssl_get_hs_total_len(mbedtls_ssl_context const *ssl)
 {
-    return (ssl->in_msg[1] << 16) |
-           (ssl->in_msg[2] << 8) |
-           ssl->in_msg[3];
+    return MBEDTLS_GET_UINT24_BE(ssl->in_msg, 1);
 }
 
 int mbedtls_ssl_prepare_handshake_record(mbedtls_ssl_context *ssl)
@@ -3253,7 +3236,7 @@
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
     if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
         int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-        unsigned int recv_msg_seq = (ssl->in_msg[4] << 8) | ssl->in_msg[5];
+        unsigned int recv_msg_seq = MBEDTLS_GET_UINT16_BE(ssl->in_msg, 4);
 
         if (ssl_check_hs_header(ssl) != 0) {
             MBEDTLS_SSL_DEBUG_MSG(1, ("invalid handshake header"));
@@ -3606,7 +3589,7 @@
         return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
 
-    *olen = p - obuf;
+    *olen = (size_t) (p - obuf);
 
     /* Go back and fill length fields */
     obuf[27] = (unsigned char) (*olen - 28);
@@ -3868,8 +3851,7 @@
      */
 
     rec->data_offset = rec_hdr_len_offset + rec_hdr_len_len;
-    rec->data_len    = ((size_t) buf[rec_hdr_len_offset + 0] << 8) |
-                       ((size_t) buf[rec_hdr_len_offset + 1] << 0);
+    rec->data_len    = MBEDTLS_GET_UINT16_BE(buf, rec_hdr_len_offset);
     MBEDTLS_SSL_DEBUG_BUF(4, "input record header", buf, rec->data_offset);
 
     MBEDTLS_SSL_DEBUG_MSG(3, ("input record: msgtype = %u, "
@@ -3897,7 +3879,7 @@
      */
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
     if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
-        rec_epoch = (rec->ctr[0] << 8) | rec->ctr[1];
+        rec_epoch = MBEDTLS_GET_UINT16_BE(rec->ctr, 0);
 
         /* Check that the datagram is large enough to contain a record
          * of the advertised length. */
@@ -3947,7 +3929,7 @@
 MBEDTLS_CHECK_RETURN_CRITICAL
 static int ssl_check_client_reconnect(mbedtls_ssl_context *ssl)
 {
-    unsigned int rec_epoch = (ssl->in_ctr[0] << 8) | ssl->in_ctr[1];
+    unsigned int rec_epoch = MBEDTLS_GET_UINT16_BE(ssl->in_ctr, 0);
 
     /*
      * Check for an epoch 0 ClientHello. We can't use in_msg here to
@@ -4269,9 +4251,7 @@
     hs_buf = &hs->buffering.hs[0];
     if ((hs_buf->is_valid == 1) && (hs_buf->is_complete == 1)) {
         /* Synthesize a record containing the buffered HS message. */
-        size_t msg_len = (hs_buf->data[1] << 16) |
-                         (hs_buf->data[2] << 8) |
-                         hs_buf->data[3];
+        size_t msg_len = MBEDTLS_GET_UINT24_BE(hs_buf->data, 1);
 
         /* Double-check that we haven't accidentally buffered
          * a message that doesn't fit into the input buffer. */
@@ -4368,7 +4348,7 @@
         case MBEDTLS_SSL_MSG_HANDSHAKE:
         {
             unsigned recv_msg_seq_offset;
-            unsigned recv_msg_seq = (ssl->in_msg[4] << 8) | ssl->in_msg[5];
+            unsigned recv_msg_seq = MBEDTLS_GET_UINT16_BE(ssl->in_msg, 4);
             mbedtls_ssl_hs_buffer *hs_buf;
             size_t msg_len = ssl->in_hslen - 12;
 
diff --git a/library/ssl_ticket.c b/library/ssl_ticket.c
index 1adaa07..8e7c145 100644
--- a/library/ssl_ticket.c
+++ b/library/ssl_ticket.c
@@ -2,19 +2,7 @@
  *  TLS server tickets callbacks implementation
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -353,7 +341,7 @@
 
     /* Dump session state */
     if ((ret = mbedtls_ssl_session_save(session,
-                                        state, end - state,
+                                        state, (size_t) (end - state),
                                         &clear_len)) != 0 ||
         (unsigned long) clear_len > 65535) {
         goto cleanup;
@@ -376,7 +364,7 @@
                                                /* Additional data: key name, IV and length */
                                                key_name, TICKET_ADD_DATA_LEN,
                                                state, clear_len,
-                                               state, end - state, &ciph_len,
+                                               state, (size_t) (end - state), &ciph_len,
                                                TICKET_AUTH_TAG_BYTES)) != 0) {
         goto cleanup;
     }
@@ -456,7 +444,7 @@
         goto cleanup;
     }
 
-    enc_len = (enc_len_p[0] << 8) | enc_len_p[1];
+    enc_len = MBEDTLS_GET_UINT16_BE(enc_len_p, 0);
 
     if (len != TICKET_MIN_LEN + enc_len) {
         ret = MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
@@ -507,7 +495,31 @@
     }
 
 #if defined(MBEDTLS_HAVE_TIME)
-    {
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+    if (session->tls_version == MBEDTLS_SSL_VERSION_TLS1_3) {
+        /* Check for expiration */
+        mbedtls_ms_time_t ticket_age = -1;
+#if defined(MBEDTLS_SSL_SRV_C)
+        if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
+            ticket_age = mbedtls_ms_time() - session->ticket_creation_time;
+        }
+#endif
+#if defined(MBEDTLS_SSL_CLI_C)
+        if (session->endpoint == MBEDTLS_SSL_IS_CLIENT) {
+            ticket_age = mbedtls_ms_time() - session->ticket_reception_time;
+        }
+#endif
+
+        mbedtls_ms_time_t ticket_lifetime = ctx->ticket_lifetime * 1000;
+
+        if (ticket_age < 0 || ticket_age > ticket_lifetime) {
+            ret = MBEDTLS_ERR_SSL_SESSION_TICKET_EXPIRED;
+            goto cleanup;
+        }
+    }
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
+    if (session->tls_version == MBEDTLS_SSL_VERSION_TLS1_2) {
         /* Check for expiration */
         mbedtls_time_t current_time = mbedtls_time(NULL);
 
@@ -517,7 +529,8 @@
             goto cleanup;
         }
     }
-#endif
+#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
+#endif /* MBEDTLS_HAVE_TIME */
 
 cleanup:
 #if defined(MBEDTLS_THREADING_C)
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 827b7fb..6678b71 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -2,19 +2,7 @@
  *  TLS shared functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  http://www.ietf.org/rfc/rfc2246.txt
@@ -1782,14 +1770,14 @@
 }
 
 #if defined(MBEDTLS_SSL_EARLY_DATA)
-void mbedtls_ssl_tls13_conf_early_data(mbedtls_ssl_config *conf,
-                                       int early_data_enabled)
+void mbedtls_ssl_conf_early_data(mbedtls_ssl_config *conf,
+                                 int early_data_enabled)
 {
     conf->early_data_enabled = early_data_enabled;
 }
 
 #if defined(MBEDTLS_SSL_SRV_C)
-void mbedtls_ssl_tls13_conf_max_early_data_size(
+void mbedtls_ssl_conf_max_early_data_size(
     mbedtls_ssl_config *conf, uint32_t max_early_data_size)
 {
     conf->max_early_data_size = max_early_data_size;
@@ -2455,7 +2443,7 @@
  *
  *     struct {
  *       opaque hostname<0..2^16-1>;
- *       uint64 ticket_received;
+ *       uint64 ticket_reception_time;
  *       uint32 ticket_lifetime;
  *       opaque ticket<1..2^16-1>;
  *     } ClientOnlyData;
@@ -2466,9 +2454,10 @@
  *       uint32 ticket_age_add;
  *       uint8 ticket_flags;
  *       opaque resumption_key<0..255>;
+ *       uint32 max_early_data_size;
  *       select ( endpoint ) {
  *            case client: ClientOnlyData;
- *            case server: uint64 start_time;
+ *            case server: uint64 ticket_creation_time;
  *        };
  *     } serialized_session_tls13;
  *
@@ -2498,8 +2487,12 @@
     }
     needed += session->resumption_key_len;  /* resumption_key */
 
+#if defined(MBEDTLS_SSL_EARLY_DATA)
+    needed += 4;                            /* max_early_data_size */
+#endif
+
 #if defined(MBEDTLS_HAVE_TIME)
-    needed += 8; /* start_time or ticket_received */
+    needed += 8; /* ticket_creation_time or ticket_reception_time */
 #endif
 
 #if defined(MBEDTLS_SSL_CLI_C)
@@ -2537,9 +2530,14 @@
     memcpy(p, session->resumption_key, session->resumption_key_len);
     p += session->resumption_key_len;
 
+#if defined(MBEDTLS_SSL_EARLY_DATA)
+    MBEDTLS_PUT_UINT32_BE(session->max_early_data_size, p, 0);
+    p += 4;
+#endif
+
 #if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_SRV_C)
     if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
-        MBEDTLS_PUT_UINT64_BE((uint64_t) session->start, p, 0);
+        MBEDTLS_PUT_UINT64_BE((uint64_t) session->ticket_creation_time, p, 0);
         p += 8;
     }
 #endif /* MBEDTLS_HAVE_TIME */
@@ -2557,7 +2555,7 @@
 #endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
 
 #if defined(MBEDTLS_HAVE_TIME)
-        MBEDTLS_PUT_UINT64_BE((uint64_t) session->ticket_received, p, 0);
+        MBEDTLS_PUT_UINT64_BE((uint64_t) session->ticket_reception_time, p, 0);
         p += 8;
 #endif
         MBEDTLS_PUT_UINT32_BE(session->ticket_lifetime, p, 0);
@@ -2605,12 +2603,20 @@
     memcpy(session->resumption_key, p, session->resumption_key_len);
     p += session->resumption_key_len;
 
+#if defined(MBEDTLS_SSL_EARLY_DATA)
+    if (end - p < 4) {
+        return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+    }
+    session->max_early_data_size = MBEDTLS_GET_UINT32_BE(p, 0);
+    p += 4;
+#endif
+
 #if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_SRV_C)
     if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
         if (end - p < 8) {
             return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
         }
-        session->start = MBEDTLS_GET_UINT64_BE(p, 0);
+        session->ticket_creation_time = MBEDTLS_GET_UINT64_BE(p, 0);
         p += 8;
     }
 #endif /* MBEDTLS_HAVE_TIME */
@@ -2645,7 +2651,7 @@
         if (end - p < 8) {
             return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
         }
-        session->ticket_received = MBEDTLS_GET_UINT64_BE(p, 0);
+        session->ticket_reception_time = MBEDTLS_GET_UINT64_BE(p, 0);
         p += 8;
 #endif
         if (end - p < 4) {
@@ -2709,132 +2715,185 @@
                                        psa_key_type_t *key_type,
                                        size_t *key_size)
 {
+#if !defined(MBEDTLS_SSL_HAVE_CCM)
+    (void) taglen;
+#endif
     switch (mbedtls_cipher_type) {
+#if defined(MBEDTLS_SSL_HAVE_AES) && defined(MBEDTLS_SSL_HAVE_CBC)
         case MBEDTLS_CIPHER_AES_128_CBC:
             *alg = PSA_ALG_CBC_NO_PADDING;
             *key_type = PSA_KEY_TYPE_AES;
             *key_size = 128;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_AES) && defined(MBEDTLS_SSL_HAVE_CCM)
         case MBEDTLS_CIPHER_AES_128_CCM:
             *alg = taglen ? PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, taglen) : PSA_ALG_CCM;
             *key_type = PSA_KEY_TYPE_AES;
             *key_size = 128;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_AES) && defined(MBEDTLS_SSL_HAVE_GCM)
         case MBEDTLS_CIPHER_AES_128_GCM:
             *alg = PSA_ALG_GCM;
             *key_type = PSA_KEY_TYPE_AES;
             *key_size = 128;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_AES) && defined(MBEDTLS_SSL_HAVE_CCM)
         case MBEDTLS_CIPHER_AES_192_CCM:
             *alg = taglen ? PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, taglen) : PSA_ALG_CCM;
             *key_type = PSA_KEY_TYPE_AES;
             *key_size = 192;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_AES) && defined(MBEDTLS_SSL_HAVE_GCM)
         case MBEDTLS_CIPHER_AES_192_GCM:
             *alg = PSA_ALG_GCM;
             *key_type = PSA_KEY_TYPE_AES;
             *key_size = 192;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_AES) && defined(MBEDTLS_SSL_HAVE_CBC)
         case MBEDTLS_CIPHER_AES_256_CBC:
             *alg = PSA_ALG_CBC_NO_PADDING;
             *key_type = PSA_KEY_TYPE_AES;
             *key_size = 256;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_AES) && defined(MBEDTLS_SSL_HAVE_CCM)
         case MBEDTLS_CIPHER_AES_256_CCM:
             *alg = taglen ? PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, taglen) : PSA_ALG_CCM;
             *key_type = PSA_KEY_TYPE_AES;
             *key_size = 256;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_AES) && defined(MBEDTLS_SSL_HAVE_GCM)
         case MBEDTLS_CIPHER_AES_256_GCM:
             *alg = PSA_ALG_GCM;
             *key_type = PSA_KEY_TYPE_AES;
             *key_size = 256;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_ARIA) && defined(MBEDTLS_SSL_HAVE_CBC)
         case MBEDTLS_CIPHER_ARIA_128_CBC:
             *alg = PSA_ALG_CBC_NO_PADDING;
             *key_type = PSA_KEY_TYPE_ARIA;
             *key_size = 128;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_ARIA) && defined(MBEDTLS_SSL_HAVE_CCM)
         case MBEDTLS_CIPHER_ARIA_128_CCM:
             *alg = taglen ? PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, taglen) : PSA_ALG_CCM;
             *key_type = PSA_KEY_TYPE_ARIA;
             *key_size = 128;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_ARIA) && defined(MBEDTLS_SSL_HAVE_GCM)
         case MBEDTLS_CIPHER_ARIA_128_GCM:
             *alg = PSA_ALG_GCM;
             *key_type = PSA_KEY_TYPE_ARIA;
             *key_size = 128;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_ARIA) && defined(MBEDTLS_SSL_HAVE_CCM)
         case MBEDTLS_CIPHER_ARIA_192_CCM:
             *alg = taglen ? PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, taglen) : PSA_ALG_CCM;
             *key_type = PSA_KEY_TYPE_ARIA;
             *key_size = 192;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_ARIA) && defined(MBEDTLS_SSL_HAVE_GCM)
         case MBEDTLS_CIPHER_ARIA_192_GCM:
             *alg = PSA_ALG_GCM;
             *key_type = PSA_KEY_TYPE_ARIA;
             *key_size = 192;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_ARIA) && defined(MBEDTLS_SSL_HAVE_CBC)
         case MBEDTLS_CIPHER_ARIA_256_CBC:
             *alg = PSA_ALG_CBC_NO_PADDING;
             *key_type = PSA_KEY_TYPE_ARIA;
             *key_size = 256;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_ARIA) && defined(MBEDTLS_SSL_HAVE_CCM)
         case MBEDTLS_CIPHER_ARIA_256_CCM:
             *alg = taglen ? PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, taglen) : PSA_ALG_CCM;
             *key_type = PSA_KEY_TYPE_ARIA;
             *key_size = 256;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_ARIA) && defined(MBEDTLS_SSL_HAVE_GCM)
         case MBEDTLS_CIPHER_ARIA_256_GCM:
             *alg = PSA_ALG_GCM;
             *key_type = PSA_KEY_TYPE_ARIA;
             *key_size = 256;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA) && defined(MBEDTLS_SSL_HAVE_CBC)
         case MBEDTLS_CIPHER_CAMELLIA_128_CBC:
             *alg = PSA_ALG_CBC_NO_PADDING;
             *key_type = PSA_KEY_TYPE_CAMELLIA;
             *key_size = 128;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA) && defined(MBEDTLS_SSL_HAVE_CCM)
         case MBEDTLS_CIPHER_CAMELLIA_128_CCM:
             *alg = taglen ? PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, taglen) : PSA_ALG_CCM;
             *key_type = PSA_KEY_TYPE_CAMELLIA;
             *key_size = 128;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA) && defined(MBEDTLS_SSL_HAVE_GCM)
         case MBEDTLS_CIPHER_CAMELLIA_128_GCM:
             *alg = PSA_ALG_GCM;
             *key_type = PSA_KEY_TYPE_CAMELLIA;
             *key_size = 128;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA) && defined(MBEDTLS_SSL_HAVE_CCM)
         case MBEDTLS_CIPHER_CAMELLIA_192_CCM:
             *alg = taglen ? PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, taglen) : PSA_ALG_CCM;
             *key_type = PSA_KEY_TYPE_CAMELLIA;
             *key_size = 192;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA) && defined(MBEDTLS_SSL_HAVE_GCM)
         case MBEDTLS_CIPHER_CAMELLIA_192_GCM:
             *alg = PSA_ALG_GCM;
             *key_type = PSA_KEY_TYPE_CAMELLIA;
             *key_size = 192;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA) && defined(MBEDTLS_SSL_HAVE_CBC)
         case MBEDTLS_CIPHER_CAMELLIA_256_CBC:
             *alg = PSA_ALG_CBC_NO_PADDING;
             *key_type = PSA_KEY_TYPE_CAMELLIA;
             *key_size = 256;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA) && defined(MBEDTLS_SSL_HAVE_CCM)
         case MBEDTLS_CIPHER_CAMELLIA_256_CCM:
             *alg = taglen ? PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, taglen) : PSA_ALG_CCM;
             *key_type = PSA_KEY_TYPE_CAMELLIA;
             *key_size = 256;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_CAMELLIA) && defined(MBEDTLS_SSL_HAVE_GCM)
         case MBEDTLS_CIPHER_CAMELLIA_256_GCM:
             *alg = PSA_ALG_GCM;
             *key_type = PSA_KEY_TYPE_CAMELLIA;
             *key_size = 256;
             break;
+#endif
+#if defined(MBEDTLS_SSL_HAVE_CHACHAPOLY)
         case MBEDTLS_CIPHER_CHACHA20_POLY1305:
             *alg = PSA_ALG_CHACHA20_POLY1305;
             *key_type = PSA_KEY_TYPE_CHACHA20;
             *key_size = 256;
             break;
+#endif
         case MBEDTLS_CIPHER_NULL:
             *alg = MBEDTLS_SSL_NULL_CIPHER;
             *key_type = 0;
@@ -3749,7 +3808,7 @@
     session->tls_version = (mbedtls_ssl_protocol_version) (0x0300 | *p++);
 
     /* Dispatch according to TLS version. */
-    remaining_len = (end - p);
+    remaining_len = (size_t) (end - p);
     switch (session->tls_version) {
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
         case MBEDTLS_SSL_VERSION_TLS1_2:
@@ -4460,7 +4519,7 @@
     }
 
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    used += 2 + ssl->transform->in_cid_len + ssl->transform->out_cid_len;
+    used += 2U + ssl->transform->in_cid_len + ssl->transform->out_cid_len;
     if (used <= buf_len) {
         *p++ = ssl->transform->in_cid_len;
         memcpy(p, ssl->transform->in_cid, ssl->transform->in_cid_len);
@@ -4741,7 +4800,7 @@
         return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
     }
 
-    ssl->mtu = (p[0] << 8) | p[1];
+    ssl->mtu = MBEDTLS_GET_UINT16_BE(p, 0);
     p += 2;
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
 
@@ -5259,10 +5318,9 @@
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 
 #if defined(MBEDTLS_SSL_EARLY_DATA)
-    mbedtls_ssl_tls13_conf_early_data(conf, MBEDTLS_SSL_EARLY_DATA_DISABLED);
+    mbedtls_ssl_conf_early_data(conf, MBEDTLS_SSL_EARLY_DATA_DISABLED);
 #if defined(MBEDTLS_SSL_SRV_C)
-    mbedtls_ssl_tls13_conf_max_early_data_size(
-        conf, MBEDTLS_SSL_MAX_EARLY_DATA_SIZE);
+    mbedtls_ssl_conf_max_early_data_size(conf, MBEDTLS_SSL_MAX_EARLY_DATA_SIZE);
 #endif
 #endif /* MBEDTLS_SSL_EARLY_DATA */
 
@@ -5687,7 +5745,7 @@
                                  uint32_t *flags)
 {
     int ret = 0;
-    int usage = 0;
+    unsigned int usage = 0;
     const char *ext_oid;
     size_t ext_len;
 
@@ -6790,7 +6848,7 @@
 
         /* Write length only when we know the actual value */
         if ((ret = mbedtls_dhm_calc_secret(&ssl->handshake->dhm_ctx,
-                                           p + 2, end - (p + 2), &len,
+                                           p + 2, (size_t) (end - (p + 2)), &len,
                                            ssl->conf->f_rng, ssl->conf->p_rng)) != 0) {
             MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_dhm_calc_secret", ret);
             return ret;
@@ -6807,7 +6865,7 @@
         size_t zlen;
 
         if ((ret = mbedtls_ecdh_calc_secret(&ssl->handshake->ecdh_ctx, &zlen,
-                                            p + 2, end - (p + 2),
+                                            p + 2, (size_t) (end - (p + 2)),
                                             ssl->conf->f_rng, ssl->conf->p_rng)) != 0) {
             MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecdh_calc_secret", ret);
             return ret;
@@ -6840,7 +6898,7 @@
     memcpy(p, psk, psk_len);
     p += psk_len;
 
-    ssl->handshake->pmslen = p - ssl->handshake->premaster;
+    ssl->handshake->pmslen = (size_t) (p - ssl->handshake->premaster);
 
     return 0;
 }
@@ -7098,7 +7156,7 @@
     /*
      * Same message structure as in mbedtls_ssl_write_certificate()
      */
-    n = (ssl->in_msg[i+1] << 8) | ssl->in_msg[i+2];
+    n = MBEDTLS_GET_UINT16_BE(ssl->in_msg, i + 1);
 
     if (ssl->in_msg[i] != 0 ||
         ssl->in_hslen != n + 3 + mbedtls_ssl_hs_hdr_len(ssl)) {
@@ -7132,8 +7190,7 @@
         }
 
         /* Read length of the next CRT in the chain. */
-        n = ((unsigned int) ssl->in_msg[i + 1] << 8)
-            | (unsigned int) ssl->in_msg[i + 2];
+        n = MBEDTLS_GET_UINT16_BE(ssl->in_msg, i + 1);
         i += 3;
 
         if (n < 128 || i + n > ssl->in_hslen) {
@@ -7661,7 +7718,7 @@
                                          unsigned char *padbuf, size_t hlen,
                                          unsigned char *buf, int from)
 {
-    int len = 12;
+    unsigned int len = 12;
     const char *sender;
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     psa_status_t status;
@@ -7861,7 +7918,8 @@
 
 int mbedtls_ssl_write_finished(mbedtls_ssl_context *ssl)
 {
-    int ret, hash_len;
+    int ret;
+    unsigned int hash_len;
 
     MBEDTLS_SSL_DEBUG_MSG(2, ("=> write finished"));
 
@@ -9033,7 +9091,7 @@
         return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
     }
 
-    session->ciphersuite = (p[0] << 8) | p[1];
+    session->ciphersuite = MBEDTLS_GET_UINT16_BE(p, 0);
     p += 2;
 
     session->id_len = *p++;
@@ -9069,7 +9127,7 @@
         return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
     }
 
-    cert_len = (p[0] << 16) | (p[1] << 8) | p[2];
+    cert_len = MBEDTLS_GET_UINT24_BE(p, 0);
     p += 3;
 
     if (cert_len != 0) {
@@ -9141,7 +9199,7 @@
         return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
     }
 
-    session->ticket_len = (p[0] << 16) | (p[1] << 8) | p[2];
+    session->ticket_len = MBEDTLS_GET_UINT24_BE(p, 0);
     p += 3;
 
     if (session->ticket_len != 0) {
@@ -9323,7 +9381,7 @@
     }
 
     /* Length of supported_signature_algorithms */
-    supported_sig_alg_len = p - supported_sig_alg;
+    supported_sig_alg_len = (size_t) (p - supported_sig_alg);
     if (supported_sig_alg_len == 0) {
         MBEDTLS_SSL_DEBUG_MSG(1, ("No signature algorithms defined."));
         return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
@@ -9333,7 +9391,7 @@
     MBEDTLS_PUT_UINT16_BE(supported_sig_alg_len + 2, buf, 2);
     MBEDTLS_PUT_UINT16_BE(supported_sig_alg_len, buf, 4);
 
-    *out_len = p - buf;
+    *out_len = (size_t) (p - buf);
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     mbedtls_ssl_tls13_set_hs_sent_ext_mask(ssl, MBEDTLS_TLS_EXT_SIG_ALG);
diff --git a/library/ssl_tls12_client.c b/library/ssl_tls12_client.c
index 27bbafa..08549a8 100644
--- a/library/ssl_tls12_client.c
+++ b/library/ssl_tls12_client.c
@@ -2,19 +2,7 @@
  *  TLS client-side functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -619,7 +607,7 @@
     p += ext_len;
 #endif
 
-    *out_len = p - buf;
+    *out_len = (size_t) (p - buf);
 
     return 0;
 }
@@ -953,7 +941,7 @@
         return MBEDTLS_ERR_SSL_DECODE_ERROR;
     }
 
-    list_len = (buf[0] << 8) | buf[1];
+    list_len = MBEDTLS_GET_UINT16_BE(buf, 0);
     if (list_len != len - 2) {
         mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
@@ -1316,8 +1304,7 @@
     }
 
     if (ssl->in_hslen > mbedtls_ssl_hs_hdr_len(ssl) + 39 + n) {
-        ext_len = ((buf[38 + n] <<  8)
-                   | (buf[39 + n]));
+        ext_len = MBEDTLS_GET_UINT16_BE(buf, 38 + n);
 
         if ((ext_len > 0 && ext_len < 4) ||
             ssl->in_hslen != mbedtls_ssl_hs_hdr_len(ssl) + 40 + n + ext_len) {
@@ -1338,7 +1325,7 @@
     }
 
     /* ciphersuite (used later) */
-    i = (buf[35 + n] << 8) | buf[36 + n];
+    i = (int) MBEDTLS_GET_UINT16_BE(buf, n + 35);
 
     /*
      * Read and check compression
@@ -1459,10 +1446,8 @@
                            ext_len));
 
     while (ext_len) {
-        unsigned int ext_id   = ((ext[0] <<  8)
-                                 | (ext[1]));
-        unsigned int ext_size = ((ext[2] <<  8)
-                                 | (ext[3]));
+        unsigned int ext_id   = MBEDTLS_GET_UINT16_BE(ext, 0);
+        unsigned int ext_size = MBEDTLS_GET_UINT16_BE(ext, 2);
 
         if (ext_size + 4 > ext_len) {
             MBEDTLS_SSL_DEBUG_MSG(1, ("bad server hello message"));
@@ -1753,9 +1738,8 @@
     }
 
     /* Next two bytes are the namedcurve value */
-    tls_id = *(*p)++;
-    tls_id <<= 8;
-    tls_id |= *(*p)++;
+    tls_id = MBEDTLS_GET_UINT16_BE(*p, 0);
+    *p += 2;
 
     /* Check it's a curve we offered */
     if (mbedtls_ssl_check_curve_tls_id(ssl, tls_id) != 0) {
@@ -1895,7 +1879,7 @@
                               ("bad server key exchange message (psk_identity_hint length)"));
         return MBEDTLS_ERR_SSL_DECODE_ERROR;
     }
-    len = (*p)[0] << 8 | (*p)[1];
+    len = MBEDTLS_GET_UINT16_BE(*p, 0);
     *p += 2;
 
     if (end - (*p) < len) {
@@ -2186,7 +2170,7 @@
 #endif
     p   = ssl->in_msg + mbedtls_ssl_hs_hdr_len(ssl);
     end = ssl->in_msg + ssl->in_hslen;
-    MBEDTLS_SSL_DEBUG_BUF(3,   "server key exchange", p, end - p);
+    MBEDTLS_SSL_DEBUG_BUF(3,   "server key exchange", p, (size_t) (end - p));
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
     if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_PSK ||
@@ -2311,7 +2295,7 @@
         mbedtls_md_type_t md_alg = MBEDTLS_MD_NONE;
         mbedtls_pk_type_t pk_alg = MBEDTLS_PK_NONE;
         unsigned char *params = ssl->in_msg + mbedtls_ssl_hs_hdr_len(ssl);
-        size_t params_len = p - params;
+        size_t params_len = (size_t) (p - params);
         void *rs_ctx = NULL;
         uint16_t sig_alg;
 
@@ -2369,7 +2353,7 @@
                 MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
             return MBEDTLS_ERR_SSL_DECODE_ERROR;
         }
-        sig_len = (p[0] << 8) | p[1];
+        sig_len = MBEDTLS_GET_UINT16_BE(p, 0);
         p += 2;
 
         if (p != end - sig_len) {
@@ -2597,8 +2581,7 @@
     }
 
     /* supported_signature_algorithms */
-    sig_alg_len = ((buf[mbedtls_ssl_hs_hdr_len(ssl) + 1 + n] <<  8)
-                   | (buf[mbedtls_ssl_hs_hdr_len(ssl) + 2 + n]));
+    sig_alg_len = MBEDTLS_GET_UINT16_BE(buf, mbedtls_ssl_hs_hdr_len(ssl) + 1 + n);
 
     /*
      * The furthest access in buf is in the loop few lines below:
@@ -2633,8 +2616,7 @@
     n += 2 + sig_alg_len;
 
     /* certificate_authorities */
-    dn_len = ((buf[mbedtls_ssl_hs_hdr_len(ssl) + 1 + n] <<  8)
-              | (buf[mbedtls_ssl_hs_hdr_len(ssl) + 2 + n]));
+    dn_len = MBEDTLS_GET_UINT16_BE(buf, mbedtls_ssl_hs_hdr_len(ssl) + 1 + n);
 
     n += dn_len;
     if (ssl->in_hslen != mbedtls_ssl_hs_hdr_len(ssl) + 3 + n) {
@@ -3264,9 +3246,9 @@
     size_t hashlen;
     void *rs_ctx = NULL;
 #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH)
-    size_t out_buf_len = ssl->out_buf_len - (ssl->out_msg - ssl->out_buf);
+    size_t out_buf_len = ssl->out_buf_len - (size_t) (ssl->out_msg - ssl->out_buf);
 #else
-    size_t out_buf_len = MBEDTLS_SSL_OUT_BUFFER_LEN - (ssl->out_msg - ssl->out_buf);
+    size_t out_buf_len = MBEDTLS_SSL_OUT_BUFFER_LEN - (size_t) (ssl->out_msg - ssl->out_buf);
 #endif
 
     MBEDTLS_SSL_DEBUG_MSG(2, ("=> write certificate verify"));
@@ -3433,10 +3415,9 @@
 
     msg = ssl->in_msg + mbedtls_ssl_hs_hdr_len(ssl);
 
-    lifetime = (((uint32_t) msg[0]) << 24) | (msg[1] << 16) |
-               (msg[2] << 8) | (msg[3]);
+    lifetime = MBEDTLS_GET_UINT32_BE(msg, 0);
 
-    ticket_len = (msg[4] << 8) | (msg[5]);
+    ticket_len = MBEDTLS_GET_UINT16_BE(msg, 4);
 
     if (ticket_len + 6 + mbedtls_ssl_hs_hdr_len(ssl) != ssl->in_hslen) {
         MBEDTLS_SSL_DEBUG_MSG(1, ("bad new session ticket message"));
diff --git a/library/ssl_tls12_server.c b/library/ssl_tls12_server.c
index 6367e46..a07d0fb 100644
--- a/library/ssl_tls12_server.c
+++ b/library/ssl_tls12_server.c
@@ -2,19 +2,7 @@
  *  TLS server-side functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -204,7 +192,7 @@
                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
         return MBEDTLS_ERR_SSL_DECODE_ERROR;
     }
-    list_size = ((buf[0] << 8) | (buf[1]));
+    list_size = MBEDTLS_GET_UINT16_BE(buf, 0);
     if (list_size + 2 != len ||
         list_size % 2 != 0) {
         MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
@@ -969,7 +957,7 @@
     }
 
     MBEDTLS_SSL_DEBUG_MSG(3, ("client hello, message len.: %d",
-                              (ssl->in_len[0] << 8) | ssl->in_len[1]));
+                              MBEDTLS_GET_UINT16_BE(ssl->in_len, 0)));
 
     MBEDTLS_SSL_DEBUG_MSG(3, ("client hello, protocol version: [%d:%d]",
                               buf[1], buf[2]));
@@ -1005,7 +993,7 @@
     }
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
 
-    msg_len = (ssl->in_len[0] << 8) | ssl->in_len[1];
+    msg_len = MBEDTLS_GET_UINT16_BE(ssl->in_len, 0);
 
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
     if (ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE) {
@@ -1263,8 +1251,7 @@
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
     ciph_offset = 35 + sess_len;
 
-    ciph_len = (buf[ciph_offset + 0] << 8)
-               | (buf[ciph_offset + 1]);
+    ciph_len = MBEDTLS_GET_UINT16_BE(buf, ciph_offset);
 
     if (ciph_len < 2 ||
         ciph_len + 2 + ciph_offset + 1 > msg_len || /* 1 for comp. alg. len */
@@ -1312,8 +1299,7 @@
             return MBEDTLS_ERR_SSL_DECODE_ERROR;
         }
 
-        ext_len = (buf[ext_offset + 0] << 8)
-                  | (buf[ext_offset + 1]);
+        ext_len = MBEDTLS_GET_UINT16_BE(buf, ext_offset);
 
         if (msg_len != ext_offset + 2 + ext_len) {
             MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
@@ -1337,8 +1323,8 @@
                                            MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
             return MBEDTLS_ERR_SSL_DECODE_ERROR;
         }
-        ext_id   = ((ext[0] <<  8) | (ext[1]));
-        ext_size = ((ext[2] <<  8) | (ext[3]));
+        ext_id   = MBEDTLS_GET_UINT16_BE(ext, 0);
+        ext_size = MBEDTLS_GET_UINT16_BE(ext, 2);
 
         if (ext_size + 4 > ext_len) {
             MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
@@ -1870,7 +1856,7 @@
         *p++ = 0x00;
     }
 
-    *olen = p - buf;
+    *olen = (size_t) (p - buf);
 }
 
 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
@@ -1962,7 +1948,7 @@
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     ret = mbedtls_psa_ecjpake_write_round(&ssl->handshake->psa_pake_ctx,
-                                          p + 2, end - p - 2, &kkpp_len,
+                                          p + 2, (size_t) (end - p - 2), &kkpp_len,
                                           MBEDTLS_ECJPAKE_ROUND_ONE);
     if (ret != 0) {
         psa_destroy_key(ssl->handshake->psa_pake_password);
@@ -1972,7 +1958,7 @@
     }
 #else
     ret = mbedtls_ecjpake_write_round_one(&ssl->handshake->ecjpake_ctx,
-                                          p + 2, end - p - 2, &kkpp_len,
+                                          p + 2, (size_t) (end - p - 2), &kkpp_len,
                                           ssl->conf->f_rng, ssl->conf->p_rng);
     if (ret != 0) {
         MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecjpake_write_round_one", ret);
@@ -2093,7 +2079,7 @@
 
     MBEDTLS_SSL_DEBUG_BUF(3, "cookie sent", cookie_len_byte + 1, *cookie_len_byte);
 
-    ssl->out_msglen  = p - ssl->out_msg;
+    ssl->out_msglen  = (size_t) (p - ssl->out_msg);
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
     ssl->out_msg[0]  = MBEDTLS_SSL_HS_HELLO_VERIFY_REQUEST;
 
@@ -2398,7 +2384,7 @@
         p += 2 + ext_len;
     }
 
-    ssl->out_msglen  = p - buf;
+    ssl->out_msglen  = (size_t) (p - buf);
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
     ssl->out_msg[0]  = MBEDTLS_SSL_HS_SERVER_HELLO;
 
@@ -2582,12 +2568,12 @@
 
             MBEDTLS_SSL_DEBUG_BUF(3, "requested DN", p - dn_size, dn_size);
 
-            total_dn_size += 2 + dn_size;
+            total_dn_size += (unsigned short) (2 + dn_size);
             crt = crt->next;
         }
     }
 
-    ssl->out_msglen  = p - buf;
+    ssl->out_msglen  = (size_t) (p - buf);
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
     ssl->out_msg[0]  = MBEDTLS_SSL_HS_CERTIFICATE_REQUEST;
     MBEDTLS_PUT_UINT16_BE(total_dn_size, ssl->out_msg, 4 + ct_len + sa_len);
@@ -2791,9 +2777,9 @@
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_SERVER_SIGNATURE_ENABLED)
 #if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH)
-    size_t out_buf_len = ssl->out_buf_len - (ssl->out_msg - ssl->out_buf);
+    size_t out_buf_len = ssl->out_buf_len - (size_t) (ssl->out_msg - ssl->out_buf);
 #else
-    size_t out_buf_len = MBEDTLS_SSL_OUT_BUFFER_LEN - (ssl->out_msg - ssl->out_buf);
+    size_t out_buf_len = MBEDTLS_SSL_OUT_BUFFER_LEN - (size_t) (ssl->out_msg - ssl->out_buf);
 #endif
 #endif
 
@@ -3098,7 +3084,7 @@
             return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
         }
 
-        size_t dig_signed_len = ssl->out_msg + ssl->out_msglen - dig_signed;
+        size_t dig_signed_len = (size_t) (ssl->out_msg + ssl->out_msglen - dig_signed);
         size_t hashlen = 0;
         unsigned char hash[MBEDTLS_MD_MAX_SIZE];
 
@@ -3113,8 +3099,8 @@
         mbedtls_pk_type_t sig_alg =
             mbedtls_ssl_get_ciphersuite_sig_pk_alg(ciphersuite_info);
 
-        unsigned int sig_hash =
-            mbedtls_ssl_tls12_get_preferred_hash_for_sig_alg(
+        unsigned char sig_hash =
+            (unsigned char) mbedtls_ssl_tls12_get_preferred_hash_for_sig_alg(
                 ssl, mbedtls_ssl_sig_from_pk_alg(sig_alg));
 
         mbedtls_md_type_t md_alg = mbedtls_ssl_md_alg_from_hash(sig_hash);
@@ -3372,7 +3358,7 @@
         return MBEDTLS_ERR_SSL_DECODE_ERROR;
     }
 
-    n = ((*p)[0] << 8) | (*p)[1];
+    n = MBEDTLS_GET_UINT16_BE(*p, 0);
     *p += 2;
 
     if (*p + n > end) {
@@ -3605,7 +3591,7 @@
         return MBEDTLS_ERR_SSL_DECODE_ERROR;
     }
 
-    n = ((*p)[0] << 8) | (*p)[1];
+    n = MBEDTLS_GET_UINT16_BE(*p, 0);
     *p += 2;
 
     if (n == 0 || n > end - *p) {
@@ -3775,7 +3761,7 @@
         handshake->xxdh_psa_privkey = MBEDTLS_SVC_KEY_ID_INIT;
 #else
         if ((ret = mbedtls_ecdh_read_public(&ssl->handshake->ecdh_ctx,
-                                            p, end - p)) != 0) {
+                                            p, (size_t) (end - p))) != 0) {
             MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecdh_read_public", ret);
             return MBEDTLS_ERR_SSL_DECODE_ERROR;
         }
@@ -3988,7 +3974,7 @@
         }
 
         if ((ret = mbedtls_ecdh_read_public(&ssl->handshake->ecdh_ctx,
-                                            p, end - p)) != 0) {
+                                            p, (size_t) (end - p))) != 0) {
             MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecdh_read_public", ret);
             return MBEDTLS_ERR_SSL_DECODE_ERROR;
         }
@@ -4017,7 +4003,7 @@
     if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE) {
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
         if ((ret = mbedtls_psa_ecjpake_read_round(
-                 &ssl->handshake->psa_pake_ctx, p, end - p,
+                 &ssl->handshake->psa_pake_ctx, p, (size_t) (end - p),
                  MBEDTLS_ECJPAKE_ROUND_TWO)) != 0) {
             psa_destroy_key(ssl->handshake->psa_pake_password);
             psa_pake_abort(&ssl->handshake->psa_pake_ctx);
@@ -4027,7 +4013,7 @@
         }
 #else
         ret = mbedtls_ecjpake_read_round_two(&ssl->handshake->ecjpake_ctx,
-                                             p, end - p);
+                                             p, (size_t) (end - p));
         if (ret != 0) {
             MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecjpake_read_round_two", ret);
             return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
@@ -4201,7 +4187,7 @@
         return MBEDTLS_ERR_SSL_DECODE_ERROR;
     }
 
-    sig_len = (ssl->in_msg[i] << 8) | ssl->in_msg[i+1];
+    sig_len = MBEDTLS_GET_UINT16_BE(ssl->in_msg, i);
     i += 2;
 
     if (i + sig_len != ssl->in_hslen) {
diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index c6fa3b3..44814b9 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -2,21 +2,7 @@
  *  TLS 1.3 client-side functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
- *  This file is part of Mbed TLS ( https://tls.mbed.org )
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -945,28 +931,14 @@
     if (ssl_tls13_ticket_get_identity(
             ssl, &hash_alg, &identity, &identity_len) == 0) {
 #if defined(MBEDTLS_HAVE_TIME)
-        mbedtls_time_t now = mbedtls_time(NULL);
+        mbedtls_ms_time_t now = mbedtls_ms_time();
         mbedtls_ssl_session *session = ssl->session_negotiate;
+        /* The ticket age has been checked to be smaller than the
+         * `ticket_lifetime` in ssl_prepare_client_hello() which is smaller than
+         * 7 days (enforced in ssl_tls13_parse_new_session_ticket()) . Thus the
+         * cast to `uint32_t` of the ticket age is safe. */
         uint32_t obfuscated_ticket_age =
-            (uint32_t) (now - session->ticket_received);
-
-        /*
-         * The ticket timestamp is in seconds but the ticket age is in
-         * milliseconds. If the ticket was received at the end of a second and
-         * re-used here just at the beginning of the next second, the computed
-         * age `now - session->ticket_received` is equal to 1s thus 1000 ms
-         * while the actual age could be just a few milliseconds or tens of
-         * milliseconds. If the server has more accurate ticket timestamps
-         * (typically timestamps in milliseconds), as part of the processing of
-         * the ClientHello, it may compute a ticket lifetime smaller than the
-         * one computed here and potentially reject the ticket. To avoid that,
-         * remove one second to the ticket age if possible.
-         */
-        if (obfuscated_ticket_age > 0) {
-            obfuscated_ticket_age -= 1;
-        }
-
-        obfuscated_ticket_age *= 1000;
+            (uint32_t) (now - session->ticket_reception_time);
         obfuscated_ticket_age += session->ticket_age_add;
 
         ret = ssl_tls13_write_identity(ssl, p, end,
@@ -1906,36 +1878,6 @@
             ret = MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE;
             goto cleanup;
     }
-#if defined(MBEDTLS_SSL_EARLY_DATA)
-    if (handshake->received_extensions & MBEDTLS_SSL_EXT_MASK(EARLY_DATA) &&
-        (handshake->selected_identity != 0 ||
-         handshake->ciphersuite_info->id !=
-         ssl->session_negotiate->ciphersuite)) {
-        /* RFC8446 4.2.11
-         * If the server supplies an "early_data" extension, the
-         * client MUST verify that the server's selected_identity
-         * is 0. If any other value is returned, the client MUST
-         * abort the handshake with an "illegal_parameter" alert.
-         *
-         * RFC 8446 4.2.10
-         * In order to accept early data, the server MUST have accepted a PSK
-         * cipher suite and selected the first key offered in the client's
-         * "pre_shared_key" extension. In addition, it MUST verify that the
-         * following values are the same as those associated with the
-         * selected PSK:
-         * - The TLS version number
-         * - The selected cipher suite
-         * - The selected ALPN [RFC7301] protocol, if any
-         *
-         * We check here that when early data is involved the server
-         * selected the cipher suite associated to the pre-shared key
-         * as it must have.
-         */
-        MBEDTLS_SSL_PEND_FATAL_ALERT(MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
-                                     MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER);
-        return MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
-    }
-#endif
 
     if (!mbedtls_ssl_conf_tls13_check_kex_modes(
             ssl, handshake->key_exchange_mode)) {
@@ -2211,6 +2153,9 @@
     int ret;
     unsigned char *buf;
     size_t buf_len;
+#if defined(MBEDTLS_SSL_EARLY_DATA)
+    mbedtls_ssl_handshake_params *handshake = ssl->handshake;
+#endif
 
     MBEDTLS_SSL_DEBUG_MSG(2, ("=> parse encrypted extensions"));
 
@@ -2223,8 +2168,37 @@
         ssl_tls13_parse_encrypted_extensions(ssl, buf, buf + buf_len));
 
 #if defined(MBEDTLS_SSL_EARLY_DATA)
-    if (ssl->handshake->received_extensions &
-        MBEDTLS_SSL_EXT_MASK(EARLY_DATA)) {
+    if (handshake->received_extensions & MBEDTLS_SSL_EXT_MASK(EARLY_DATA)) {
+        /* RFC8446 4.2.11
+         * If the server supplies an "early_data" extension, the
+         * client MUST verify that the server's selected_identity
+         * is 0. If any other value is returned, the client MUST
+         * abort the handshake with an "illegal_parameter" alert.
+         *
+         * RFC 8446 4.2.10
+         * In order to accept early data, the server MUST have accepted a PSK
+         * cipher suite and selected the first key offered in the client's
+         * "pre_shared_key" extension. In addition, it MUST verify that the
+         * following values are the same as those associated with the
+         * selected PSK:
+         * - The TLS version number
+         * - The selected cipher suite
+         * - The selected ALPN [RFC7301] protocol, if any
+         *
+         * We check here that when early data is involved the server
+         * selected the cipher suite associated to the pre-shared key
+         * as it must have.
+         */
+        if (handshake->selected_identity != 0 ||
+            handshake->ciphersuite_info->id !=
+            ssl->session_negotiate->ciphersuite) {
+
+            MBEDTLS_SSL_PEND_FATAL_ALERT(
+                MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER,
+                MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER);
+            return MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
+        }
+
         ssl->early_data_status = MBEDTLS_SSL_EARLY_DATA_STATUS_ACCEPTED;
     }
 #endif
@@ -2774,6 +2748,11 @@
     MBEDTLS_SSL_DEBUG_MSG(3,
                           ("ticket_lifetime: %u",
                            (unsigned int) session->ticket_lifetime));
+    if (session->ticket_lifetime >
+        MBEDTLS_SSL_TLS1_3_MAX_ALLOWED_TICKET_LIFETIME) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("ticket_lifetime exceeds 7 days."));
+        return MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
+    }
 
     session->ticket_age_add = MBEDTLS_GET_UINT32_BE(p, 4);
     MBEDTLS_SSL_DEBUG_MSG(3,
@@ -2849,7 +2828,7 @@
 
 #if defined(MBEDTLS_HAVE_TIME)
     /* Store ticket creation time */
-    session->ticket_received = mbedtls_time(NULL);
+    session->ticket_reception_time = mbedtls_ms_time();
 #endif
 
     ciphersuite_info = mbedtls_ssl_ciphersuite_from_id(session->ciphersuite);
diff --git a/library/ssl_tls13_generic.c b/library/ssl_tls13_generic.c
index 3c8d448..cc77a94 100644
--- a/library/ssl_tls13_generic.c
+++ b/library/ssl_tls13_generic.c
@@ -2,19 +2,7 @@
  *  TLS 1.3 functionality shared between client and server
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/ssl_tls13_invasive.h b/library/ssl_tls13_invasive.h
index 3fb79a9..b4506f7 100644
--- a/library/ssl_tls13_invasive.h
+++ b/library/ssl_tls13_invasive.h
@@ -1,18 +1,6 @@
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef MBEDTLS_SSL_TLS13_INVASIVE_H
diff --git a/library/ssl_tls13_keys.c b/library/ssl_tls13_keys.c
index 5ae6210..a6a2915 100644
--- a/library/ssl_tls13_keys.c
+++ b/library/ssl_tls13_keys.c
@@ -2,19 +2,7 @@
  *  TLS 1.3 key schedule
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 ( the "License" ); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/ssl_tls13_keys.h b/library/ssl_tls13_keys.h
index 21e9b4d..d3a4c6c 100644
--- a/library/ssl_tls13_keys.h
+++ b/library/ssl_tls13_keys.h
@@ -2,19 +2,7 @@
  *  TLS 1.3 key schedule
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 ( the "License" ); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #if !defined(MBEDTLS_SSL_TLS1_3_KEYS_H)
 #define MBEDTLS_SSL_TLS1_3_KEYS_H
diff --git a/library/ssl_tls13_server.c b/library/ssl_tls13_server.c
index 6445a00..d983a00 100644
--- a/library/ssl_tls13_server.c
+++ b/library/ssl_tls13_server.c
@@ -2,19 +2,7 @@
  *  TLS 1.3 server-side functions
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -106,6 +94,10 @@
 #define SSL_TLS1_3_OFFERED_PSK_MATCH       0
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_check_psk_key_exchange(mbedtls_ssl_context *ssl);
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_check_psk_ephemeral_key_exchange(mbedtls_ssl_context *ssl);
 
 MBEDTLS_CHECK_RETURN_CRITICAL
 static int ssl_tls13_offered_psks_check_identity_match_ticket(
@@ -117,10 +109,12 @@
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *ticket_buffer;
+    unsigned int key_exchanges;
 #if defined(MBEDTLS_HAVE_TIME)
-    mbedtls_time_t now;
-    uint64_t age_in_s;
-    int64_t age_diff_in_ms;
+    mbedtls_ms_time_t now;
+    mbedtls_ms_time_t server_age;
+    uint32_t client_age;
+    mbedtls_ms_time_t age_diff;
 #endif
 
     ((void) obfuscated_ticket_age);
@@ -159,6 +153,12 @@
     /* We delete the temporary buffer */
     mbedtls_free(ticket_buffer);
 
+    if (ret == 0 && session->tls_version != MBEDTLS_SSL_VERSION_TLS1_3) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("Ticket TLS version is not 1.3."));
+        /* TODO: Define new return value for this case. */
+        ret = MBEDTLS_ERR_SSL_BAD_PROTOCOL_VERSION;
+    }
+
     if (ret != 0) {
         goto exit;
     }
@@ -172,30 +172,36 @@
      * We regard the ticket with incompatible key exchange modes as not match.
      */
     ret = MBEDTLS_ERR_ERROR_GENERIC_ERROR;
-    MBEDTLS_SSL_PRINT_TICKET_FLAGS(4,
-                                   session->ticket_flags);
-    if (mbedtls_ssl_tls13_check_kex_modes(
-            ssl,
-            mbedtls_ssl_session_get_ticket_flags(
-                session,
-                MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ALL))) {
+    MBEDTLS_SSL_PRINT_TICKET_FLAGS(4, session->ticket_flags);
+
+    key_exchanges = 0;
+    if (mbedtls_ssl_session_ticket_allow_psk_ephemeral(session) &&
+        ssl_tls13_check_psk_ephemeral_key_exchange(ssl)) {
+        key_exchanges |= MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL;
+    }
+    if (mbedtls_ssl_session_ticket_allow_psk(session) &&
+        ssl_tls13_check_psk_key_exchange(ssl)) {
+        key_exchanges |= MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK;
+    }
+
+    if (key_exchanges == 0) {
         MBEDTLS_SSL_DEBUG_MSG(3, ("No suitable key exchange mode"));
         goto exit;
     }
 
     ret = MBEDTLS_ERR_SSL_SESSION_TICKET_EXPIRED;
 #if defined(MBEDTLS_HAVE_TIME)
-    now = mbedtls_time(NULL);
+    now = mbedtls_ms_time();
 
-    if (now < session->start) {
+    if (now < session->ticket_creation_time) {
         MBEDTLS_SSL_DEBUG_MSG(
-            3, ("Invalid ticket start time ( now=%" MBEDTLS_PRINTF_LONGLONG
-                ", start=%" MBEDTLS_PRINTF_LONGLONG " )",
-                (long long) now, (long long) session->start));
+            3, ("Invalid ticket creation time ( now = %" MBEDTLS_PRINTF_MS_TIME
+                ", creation_time = %" MBEDTLS_PRINTF_MS_TIME " )",
+                now, session->ticket_creation_time));
         goto exit;
     }
 
-    age_in_s = (uint64_t) (now - session->start);
+    server_age = now - session->ticket_creation_time;
 
     /* RFC 8446 section 4.6.1
      *
@@ -206,12 +212,11 @@
      * Clients MUST NOT attempt to use tickets which have ages greater than
      * the "ticket_lifetime" value which was provided with the ticket.
      *
-     * For time being, the age MUST be less than 604800 seconds (7 days).
      */
-    if (age_in_s > 604800) {
+    if (server_age > MBEDTLS_SSL_TLS1_3_MAX_ALLOWED_TICKET_LIFETIME * 1000) {
         MBEDTLS_SSL_DEBUG_MSG(
-            3, ("Ticket age exceeds limitation ticket_age=%lu",
-                (long unsigned int) age_in_s));
+            3, ("Ticket age exceeds limitation ticket_age = %" MBEDTLS_PRINTF_MS_TIME,
+                server_age));
         goto exit;
     }
 
@@ -222,18 +227,19 @@
      * ticket_age_add from PskIdentity.obfuscated_ticket_age modulo 2^32) is
      * within a small tolerance of the time since the ticket was issued.
      *
-     * NOTE: When `now == session->start`, `age_diff_in_ms` may be negative
-     *       as the age units are different on the server (s) and in the
-     *       client (ms) side. Add a -1000 ms tolerance window to take this
-     *       into account.
+     * NOTE: The typical accuracy of an RTC crystal is ±100 to ±20 parts per
+     *       million (360 to 72 milliseconds per hour). Default tolerance
+     *       window is 6s, thus in the worst case clients and servers must
+     *       sync up their system time every 6000/360/2~=8 hours.
      */
-    age_diff_in_ms = age_in_s * 1000;
-    age_diff_in_ms -= (obfuscated_ticket_age - session->ticket_age_add);
-    if (age_diff_in_ms <= -1000 ||
-        age_diff_in_ms > MBEDTLS_SSL_TLS1_3_TICKET_AGE_TOLERANCE) {
+    client_age = obfuscated_ticket_age - session->ticket_age_add;
+    age_diff = server_age - (mbedtls_ms_time_t) client_age;
+    if (age_diff < -MBEDTLS_SSL_TLS1_3_TICKET_AGE_TOLERANCE ||
+        age_diff > MBEDTLS_SSL_TLS1_3_TICKET_AGE_TOLERANCE) {
         MBEDTLS_SSL_DEBUG_MSG(
-            3, ("Ticket age outside tolerance window ( diff=%d )",
-                (int) age_diff_in_ms));
+            3, ("Ticket age outside tolerance window ( diff = %"
+                MBEDTLS_PRINTF_MS_TIME ")",
+                age_diff));
         goto exit;
     }
 
@@ -467,6 +473,10 @@
     }
     memcpy(dst->resumption_key, src->resumption_key, src->resumption_key_len);
 
+#if defined(MBEDTLS_SSL_EARLY_DATA)
+    dst->max_early_data_size = src->max_early_data_size;
+#endif
+
     return 0;
 }
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
@@ -991,6 +1001,26 @@
 }
 #endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL_ENABLED */
 
+#if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_PSK_ENABLED)
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_ticket_permission_check(mbedtls_ssl_context *ssl,
+                                             unsigned int kex_mode)
+{
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+    if (ssl->handshake->resume) {
+        if (mbedtls_ssl_session_check_ticket_flags(
+                ssl->session_negotiate, kex_mode)) {
+            return 0;
+        }
+    }
+#else
+    ((void) ssl);
+    ((void) kex_mode);
+#endif
+    return 1;
+}
+#endif /* MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_PSK_ENABLED */
+
 MBEDTLS_CHECK_RETURN_CRITICAL
 static int ssl_tls13_check_ephemeral_key_exchange(mbedtls_ssl_context *ssl)
 {
@@ -1007,7 +1037,9 @@
 static int ssl_tls13_check_psk_key_exchange(mbedtls_ssl_context *ssl)
 {
 #if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ENABLED)
-    return mbedtls_ssl_conf_tls13_psk_enabled(ssl) &&
+    return ssl_tls13_ticket_permission_check(
+        ssl, MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK) &&
+           mbedtls_ssl_conf_tls13_psk_enabled(ssl) &&
            mbedtls_ssl_tls13_psk_enabled(ssl) &&
            ssl_tls13_client_hello_has_exts_for_psk_key_exchange(ssl);
 #else
@@ -1020,7 +1052,9 @@
 static int ssl_tls13_check_psk_ephemeral_key_exchange(mbedtls_ssl_context *ssl)
 {
 #if defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL_ENABLED)
-    return mbedtls_ssl_conf_tls13_psk_ephemeral_enabled(ssl) &&
+    return ssl_tls13_ticket_permission_check(
+        ssl, MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL) &&
+           mbedtls_ssl_conf_tls13_psk_ephemeral_enabled(ssl) &&
            mbedtls_ssl_tls13_psk_ephemeral_enabled(ssl) &&
            ssl_tls13_client_hello_has_exts_for_psk_ephemeral_key_exchange(ssl);
 #else
@@ -1703,9 +1737,8 @@
      * - The content up to but excluding the PSK extension, if present.
      */
     /* If we've settled on a PSK-based exchange, parse PSK identity ext */
-    if (mbedtls_ssl_tls13_some_psk_enabled(ssl) &&
-        mbedtls_ssl_conf_tls13_some_psk_enabled(ssl) &&
-        (handshake->received_extensions & MBEDTLS_SSL_EXT_MASK(PRE_SHARED_KEY))) {
+    if (ssl_tls13_check_psk_key_exchange(ssl) ||
+        ssl_tls13_check_psk_ephemeral_key_exchange(ssl)) {
         ret = handshake->update_checksum(ssl, buf,
                                          pre_shared_key_ext - buf);
         if (0 != ret) {
@@ -1762,9 +1795,59 @@
         return;
     }
 
-    /* We do not accept early data for the time being */
     ssl->early_data_status = MBEDTLS_SSL_EARLY_DATA_STATUS_REJECTED;
 
+    if (ssl->conf->early_data_enabled == MBEDTLS_SSL_EARLY_DATA_DISABLED) {
+        MBEDTLS_SSL_DEBUG_MSG(
+            1,
+            ("EarlyData: rejected, feature disabled in server configuration."));
+        return;
+    }
+
+    if (!handshake->resume) {
+        /* We currently support early data only in the case of PSKs established
+           via a NewSessionTicket message thus in the case of a session
+           resumption. */
+        MBEDTLS_SSL_DEBUG_MSG(
+            1, ("EarlyData: rejected, not a session resumption."));
+        return;
+    }
+
+    /* RFC 8446 4.2.10
+     *
+     * In order to accept early data, the server MUST have accepted a PSK cipher
+     * suite and selected the first key offered in the client's "pre_shared_key"
+     * extension. In addition, it MUST verify that the following values are the
+     * same as those associated with the selected PSK:
+     * - The TLS version number
+     * - The selected cipher suite
+     * - The selected ALPN [RFC7301] protocol, if any
+     *
+     * NOTE:
+     *  - The TLS version number is checked in
+     *    ssl_tls13_offered_psks_check_identity_match_ticket().
+     *  - ALPN is not checked for the time being (TODO).
+     */
+
+    if (handshake->selected_identity != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(
+            1, ("EarlyData: rejected, the selected key in "
+                "`pre_shared_key` is not the first one."));
+        return;
+    }
+
+    if (handshake->ciphersuite_info->id !=
+        ssl->session_negotiate->ciphersuite) {
+        MBEDTLS_SSL_DEBUG_MSG(
+            1, ("EarlyData: rejected, the selected ciphersuite is not the one "
+                "of the selected pre-shared key."));
+        return;
+
+    }
+
+
+    ssl->early_data_status = MBEDTLS_SSL_EARLY_DATA_STATUS_ACCEPTED;
+
 }
 #endif /* MBEDTLS_SSL_EARLY_DATA */
 
@@ -2424,6 +2507,16 @@
     p += output_len;
 #endif /* MBEDTLS_SSL_ALPN */
 
+#if defined(MBEDTLS_SSL_EARLY_DATA)
+    if (ssl->early_data_status == MBEDTLS_SSL_EARLY_DATA_STATUS_ACCEPTED) {
+        ret = mbedtls_ssl_tls13_write_early_data_ext(ssl, p, end, &output_len);
+        if (ret != 0) {
+            return ret;
+        }
+        p += output_len;
+    }
+#endif /* MBEDTLS_SSL_EARLY_DATA */
+
     extensions_len = (p - p_extensions_len) - 2;
     MBEDTLS_PUT_UINT16_BE(extensions_len, p_extensions_len, 0);
 
@@ -2785,7 +2878,7 @@
     MBEDTLS_SSL_DEBUG_MSG(2, ("=> prepare NewSessionTicket msg"));
 
 #if defined(MBEDTLS_HAVE_TIME)
-    session->start = mbedtls_time(NULL);
+    session->ticket_creation_time = mbedtls_ms_time();
 #endif
 
     /* Set ticket_flags depends on the advertised psk key exchange mode */
@@ -2932,8 +3025,8 @@
      *      MAY treat a ticket as valid for a shorter period of time than what
      *      is stated in the ticket_lifetime.
      */
-    if (ticket_lifetime > 604800) {
-        ticket_lifetime = 604800;
+    if (ticket_lifetime > MBEDTLS_SSL_TLS1_3_MAX_ALLOWED_TICKET_LIFETIME) {
+        ticket_lifetime = MBEDTLS_SSL_TLS1_3_MAX_ALLOWED_TICKET_LIFETIME;
     }
     MBEDTLS_PUT_UINT32_BE(ticket_lifetime, p, 0);
     MBEDTLS_SSL_DEBUG_MSG(3, ("ticket_lifetime: %u",
diff --git a/library/threading.c b/library/threading.c
index 130c696..873b507 100644
--- a/library/threading.c
+++ b/library/threading.c
@@ -2,19 +2,7 @@
  *  Threading abstraction layer
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 /*
@@ -68,28 +56,27 @@
         return;
     }
 
-    /* A nonzero value of is_valid indicates a successfully initialized
-     * mutex. This is a workaround for not being able to return an error
-     * code for this function. The lock/unlock functions return an error
-     * if is_valid is nonzero. The Mbed TLS unit test code uses this field
-     * to distinguish more states of the mutex; see
-     * tests/src/threading_helpers for details. */
-    mutex->is_valid = pthread_mutex_init(&mutex->mutex, NULL) == 0;
+    /* One problem here is that calling lock on a pthread mutex without first
+     * having initialised it is undefined behaviour. Obviously we cannot check
+     * this here in a thread safe manner without a significant performance
+     * hit, so state transitions are checked in tests only via the state
+     * variable. Please make sure any new mutex that gets added is exercised in
+     * tests; see tests/src/threading_helpers.c for more details. */
+    (void) pthread_mutex_init(&mutex->mutex, NULL);
 }
 
 static void threading_mutex_free_pthread(mbedtls_threading_mutex_t *mutex)
 {
-    if (mutex == NULL || !mutex->is_valid) {
+    if (mutex == NULL) {
         return;
     }
 
     (void) pthread_mutex_destroy(&mutex->mutex);
-    mutex->is_valid = 0;
 }
 
 static int threading_mutex_lock_pthread(mbedtls_threading_mutex_t *mutex)
 {
-    if (mutex == NULL || !mutex->is_valid) {
+    if (mutex == NULL) {
         return MBEDTLS_ERR_THREADING_BAD_INPUT_DATA;
     }
 
@@ -102,7 +89,7 @@
 
 static int threading_mutex_unlock_pthread(mbedtls_threading_mutex_t *mutex)
 {
-    if (mutex == NULL || !mutex->is_valid) {
+    if (mutex == NULL) {
         return MBEDTLS_ERR_THREADING_BAD_INPUT_DATA;
     }
 
diff --git a/library/timing.c b/library/timing.c
index 6852033..58f1c1e 100644
--- a/library/timing.c
+++ b/library/timing.c
@@ -2,19 +2,7 @@
  *  Portable interface to the CPU cycle counter
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/version.c b/library/version.c
index 4f78c9c..0439733 100644
--- a/library/version.c
+++ b/library/version.c
@@ -2,19 +2,7 @@
  *  Version information
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
diff --git a/library/x509.c b/library/x509.c
index 990393c..b7b71f3 100644
--- a/library/x509.c
+++ b/library/x509.c
@@ -2,19 +2,7 @@
  *  X.509 common functions for parsing and verification
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The ITU-T X.509 standard defines a certificate format for PKI.
diff --git a/library/x509_create.c b/library/x509_create.c
index 62fb119..8f31c3b 100644
--- a/library/x509_create.c
+++ b/library/x509_create.c
@@ -2,19 +2,7 @@
  *  X.509 base functions for creating certificates / CSRs
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "common.h"
@@ -181,7 +169,7 @@
             return MBEDTLS_ERR_X509_INVALID_NAME;
         }
     }
-    *data_len = d - data;
+    *data_len = (size_t) (d - data);
     return 0;
 }
 
@@ -309,8 +297,8 @@
 
     while (c <= end) {
         if (in_attr_type && *c == '=') {
-            if ((attr_descr = x509_attr_descr_from_name(s, c - s)) == NULL) {
-                if ((mbedtls_oid_from_numeric_string(&oid, s, c - s)) != 0) {
+            if ((attr_descr = x509_attr_descr_from_name(s, (size_t) (c - s))) == NULL) {
+                if ((mbedtls_oid_from_numeric_string(&oid, s, (size_t) (c - s))) != 0) {
                     return MBEDTLS_ERR_X509_INVALID_NAME;
                 } else {
                     numericoid = 1;
@@ -334,7 +322,7 @@
                 /* We know that c >= s (loop invariant) and c != s (in this
                  * else branch), hence c - s - 1 >= 0. */
                 parse_ret = parse_attribute_value_hex_der_encoded(
-                    s + 1, c - s - 1,
+                    s + 1, (size_t) (c - s) - 1,
                     data, sizeof(data), &data_len, &tag);
                 if (parse_ret != 0) {
                     mbedtls_free(oid.p);
diff --git a/library/x509_crl.c b/library/x509_crl.c
index 79ace8f..fdbad23 100644
--- a/library/x509_crl.c
+++ b/library/x509_crl.c
@@ -2,19 +2,7 @@
  *  X.509 Certificate Revocation List (CRL) parsing
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The ITU-T X.509 standard defines a certificate format for PKI.
@@ -379,7 +367,7 @@
     }
 
     end = p + len;
-    crl->tbs.len = end - crl->tbs.p;
+    crl->tbs.len = (size_t) (end - crl->tbs.p);
 
     /*
      * Version  ::=  INTEGER  OPTIONAL {  v1(0), v2(1)  }
@@ -423,7 +411,7 @@
         return ret;
     }
 
-    crl->issuer_raw.len = p - crl->issuer_raw.p;
+    crl->issuer_raw.len = (size_t) (p - crl->issuer_raw.p);
 
     /*
      * thisUpdate          Time
diff --git a/library/x509_crt.c b/library/x509_crt.c
index e9153e7..1fe4448 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -2,19 +2,7 @@
  *  X.509 certificate parsing and verification
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The ITU-T X.509 standard defines a certificate format for PKI.
@@ -1120,7 +1108,7 @@
     }
 
     end = crt_end = p + len;
-    crt->raw.len = crt_end - buf;
+    crt->raw.len = (size_t) (crt_end - buf);
     if (make_copy != 0) {
         /* Create and populate a new buffer for the raw field. */
         crt->raw.p = p = mbedtls_calloc(1, crt->raw.len);
@@ -1150,7 +1138,7 @@
     }
 
     end = p + len;
-    crt->tbs.len = end - crt->tbs.p;
+    crt->tbs.len = (size_t) (end - crt->tbs.p);
 
     /*
      * Version  ::=  INTEGER  {  v1(0), v2(1), v3(2)  }
@@ -1197,7 +1185,7 @@
         return ret;
     }
 
-    crt->issuer_raw.len = p - crt->issuer_raw.p;
+    crt->issuer_raw.len = (size_t) (p - crt->issuer_raw.p);
 
     /*
      * Validity ::= SEQUENCE {
@@ -1227,7 +1215,7 @@
         return ret;
     }
 
-    crt->subject_raw.len = p - crt->subject_raw.p;
+    crt->subject_raw.len = (size_t) (p - crt->subject_raw.p);
 
     /*
      * SubjectPublicKeyInfo
@@ -1237,7 +1225,7 @@
         mbedtls_x509_crt_free(crt);
         return ret;
     }
-    crt->pk_raw.len = p - crt->pk_raw.p;
+    crt->pk_raw.len = (size_t) (p - crt->pk_raw.p);
 
     /*
      *  issuerUniqueID  [1]  IMPLICIT UniqueIdentifier OPTIONAL,
diff --git a/library/x509_csr.c b/library/x509_csr.c
index 0b2bb6f..79b1589 100644
--- a/library/x509_csr.c
+++ b/library/x509_csr.c
@@ -2,19 +2,7 @@
  *  X.509 Certificate Signing Request (CSR) parsing
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  *  The ITU-T X.509 standard defines a certificate format for PKI.
@@ -73,13 +61,17 @@
  * Parse CSR extension requests in DER format
  */
 static int x509_csr_parse_extensions(mbedtls_x509_csr *csr,
-                                     unsigned char **p, const unsigned char *end)
+                                     unsigned char **p, const unsigned char *end,
+                                     mbedtls_x509_csr_ext_cb_t cb,
+                                     void *p_ctx)
 {
-    int ret;
+    int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len;
-    unsigned char *end_ext_data;
+    unsigned char *end_ext_data, *end_ext_octet;
+
     while (*p < end) {
         mbedtls_x509_buf extn_oid = { 0, 0, NULL };
+        int is_critical = 0; /* DEFAULT FALSE */
         int ext_type = 0;
 
         /* Read sequence tag */
@@ -100,13 +92,21 @@
         extn_oid.p = *p;
         *p += extn_oid.len;
 
+        /* Get optional critical */
+        if ((ret = mbedtls_asn1_get_bool(p, end_ext_data, &is_critical)) != 0 &&
+            (ret != MBEDTLS_ERR_ASN1_UNEXPECTED_TAG)) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
+        }
+
         /* Data should be octet string type */
         if ((ret = mbedtls_asn1_get_tag(p, end_ext_data, &len,
                                         MBEDTLS_ASN1_OCTET_STRING)) != 0) {
             return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
         }
 
-        if (*p + len != end_ext_data) {
+        end_ext_octet = *p + len;
+
+        if (end_ext_octet != end_ext_data) {
             return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
                                      MBEDTLS_ERR_ASN1_LENGTH_MISMATCH);
         }
@@ -116,44 +116,72 @@
          */
         ret = mbedtls_oid_get_x509_ext_type(&extn_oid, &ext_type);
 
-        if (ret == 0) {
-            /* Forbid repeated extensions */
-            if ((csr->ext_types & ext_type) != 0) {
+        if (ret != 0) {
+            /* Give the callback (if any) a chance to handle the extension */
+            if (cb != NULL) {
+                ret = cb(p_ctx, csr, &extn_oid, is_critical, *p, end_ext_octet);
+                if (ret != 0 && is_critical) {
+                    return ret;
+                }
+                *p = end_ext_octet;
+                continue;
+            }
+
+            /* No parser found, skip extension */
+            *p = end_ext_octet;
+
+            if (is_critical) {
+                /* Data is marked as critical: fail */
                 return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
-                                         MBEDTLS_ERR_ASN1_INVALID_DATA);
+                                         MBEDTLS_ERR_ASN1_UNEXPECTED_TAG);
             }
-
-            csr->ext_types |= ext_type;
-
-            switch (ext_type) {
-                case MBEDTLS_X509_EXT_KEY_USAGE:
-                    /* Parse key usage */
-                    if ((ret = mbedtls_x509_get_key_usage(p, end_ext_data,
-                                                          &csr->key_usage)) != 0) {
-                        return ret;
-                    }
-                    break;
-
-                case MBEDTLS_X509_EXT_SUBJECT_ALT_NAME:
-                    /* Parse subject alt name */
-                    if ((ret = mbedtls_x509_get_subject_alt_name(p, end_ext_data,
-                                                                 &csr->subject_alt_names)) != 0) {
-                        return ret;
-                    }
-                    break;
-
-                case MBEDTLS_X509_EXT_NS_CERT_TYPE:
-                    /* Parse netscape certificate type */
-                    if ((ret = mbedtls_x509_get_ns_cert_type(p, end_ext_data,
-                                                             &csr->ns_cert_type)) != 0) {
-                        return ret;
-                    }
-                    break;
-                default:
-                    break;
-            }
+            continue;
         }
-        *p = end_ext_data;
+
+        /* Forbid repeated extensions */
+        if ((csr->ext_types & ext_type) != 0) {
+            return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS,
+                                     MBEDTLS_ERR_ASN1_INVALID_DATA);
+        }
+
+        csr->ext_types |= ext_type;
+
+        switch (ext_type) {
+            case MBEDTLS_X509_EXT_KEY_USAGE:
+                /* Parse key usage */
+                if ((ret = mbedtls_x509_get_key_usage(p, end_ext_data,
+                                                      &csr->key_usage)) != 0) {
+                    return ret;
+                }
+                break;
+
+            case MBEDTLS_X509_EXT_SUBJECT_ALT_NAME:
+                /* Parse subject alt name */
+                if ((ret = mbedtls_x509_get_subject_alt_name(p, end_ext_data,
+                                                             &csr->subject_alt_names)) != 0) {
+                    return ret;
+                }
+                break;
+
+            case MBEDTLS_X509_EXT_NS_CERT_TYPE:
+                /* Parse netscape certificate type */
+                if ((ret = mbedtls_x509_get_ns_cert_type(p, end_ext_data,
+                                                         &csr->ns_cert_type)) != 0) {
+                    return ret;
+                }
+                break;
+            default:
+                /*
+                 * If this is a non-critical extension, which the oid layer
+                 * supports, but there isn't an x509 parser for it,
+                 * skip the extension.
+                 */
+                if (is_critical) {
+                    return MBEDTLS_ERR_X509_FEATURE_UNAVAILABLE;
+                } else {
+                    *p = end_ext_octet;
+                }
+        }
     }
 
     if (*p != end) {
@@ -168,7 +196,9 @@
  * Parse CSR attributes in DER format
  */
 static int x509_csr_parse_attributes(mbedtls_x509_csr *csr,
-                                     const unsigned char *start, const unsigned char *end)
+                                     const unsigned char *start, const unsigned char *end,
+                                     mbedtls_x509_csr_ext_cb_t cb,
+                                     void *p_ctx)
 {
     int ret;
     size_t len;
@@ -207,7 +237,7 @@
                 return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_EXTENSIONS, ret);
             }
 
-            if ((ret = x509_csr_parse_extensions(csr, p, *p + len)) != 0) {
+            if ((ret = x509_csr_parse_extensions(csr, p, *p + len, cb, p_ctx)) != 0) {
                 return ret;
             }
 
@@ -231,8 +261,10 @@
 /*
  * Parse a CSR in DER format
  */
-int mbedtls_x509_csr_parse_der(mbedtls_x509_csr *csr,
-                               const unsigned char *buf, size_t buflen)
+static int mbedtls_x509_csr_parse_der_internal(mbedtls_x509_csr *csr,
+                                               const unsigned char *buf, size_t buflen,
+                                               mbedtls_x509_csr_ext_cb_t cb,
+                                               void *p_ctx)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t len;
@@ -296,7 +328,7 @@
     }
 
     end = p + len;
-    csr->cri.len = end - csr->cri.p;
+    csr->cri.len = (size_t) (end - csr->cri.p);
 
     /*
      *  Version  ::=  INTEGER {  v1(0) }
@@ -329,7 +361,7 @@
         return ret;
     }
 
-    csr->subject_raw.len = p - csr->subject_raw.p;
+    csr->subject_raw.len = (size_t) (p - csr->subject_raw.p);
 
     /*
      *  subjectPKInfo SubjectPublicKeyInfo
@@ -356,7 +388,7 @@
         return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_X509_INVALID_FORMAT, ret);
     }
 
-    if ((ret = x509_csr_parse_attributes(csr, p, p + len)) != 0) {
+    if ((ret = x509_csr_parse_attributes(csr, p, p + len, cb, p_ctx)) != 0) {
         mbedtls_x509_csr_free(csr);
         return ret;
     }
@@ -396,6 +428,26 @@
 }
 
 /*
+ * Parse a CSR in DER format
+ */
+int mbedtls_x509_csr_parse_der(mbedtls_x509_csr *csr,
+                               const unsigned char *buf, size_t buflen)
+{
+    return mbedtls_x509_csr_parse_der_internal(csr, buf, buflen, NULL, NULL);
+}
+
+/*
+ * Parse a CSR in DER format with callback for unknown extensions
+ */
+int mbedtls_x509_csr_parse_der_with_ext_cb(mbedtls_x509_csr *csr,
+                                           const unsigned char *buf, size_t buflen,
+                                           mbedtls_x509_csr_ext_cb_t cb,
+                                           void *p_ctx)
+{
+    return mbedtls_x509_csr_parse_der_internal(csr, buf, buflen, cb, p_ctx);
+}
+
+/*
  * Parse a CSR, allowing for PEM or raw DER encoding
  */
 int mbedtls_x509_csr_parse(mbedtls_x509_csr *csr, const unsigned char *buf, size_t buflen)
diff --git a/library/x509write.c b/library/x509write.c
index 5628c29..d434df5 100644
--- a/library/x509write.c
+++ b/library/x509write.c
@@ -2,19 +2,7 @@
  *  X.509 internal, common functions for writing
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #include "common.h"
 #if defined(MBEDTLS_X509_CSR_WRITE_C) || defined(MBEDTLS_X509_CRT_WRITE_C)
diff --git a/library/x509write_crt.c b/library/x509write_crt.c
index a8a3022..44b6b17 100644
--- a/library/x509write_crt.c
+++ b/library/x509write_crt.c
@@ -2,19 +2,7 @@
  *  X.509 certificate writing
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  * References:
@@ -493,7 +481,7 @@
      */
     MBEDTLS_ASN1_CHK_ADD(pub_len,
                          mbedtls_pk_write_pubkey_der(ctx->subject_key,
-                                                     buf, c - buf));
+                                                     buf, (size_t) (c - buf)));
     c -= pub_len;
     len += pub_len;
 
diff --git a/library/x509write_csr.c b/library/x509write_csr.c
index d996052..254da69 100644
--- a/library/x509write_csr.c
+++ b/library/x509write_csr.c
@@ -2,19 +2,7 @@
  *  X.509 Certificate Signing Request writing
  *
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 /*
  * References:
@@ -197,7 +185,7 @@
                              MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_CONTEXT_SPECIFIC));
 
     MBEDTLS_ASN1_CHK_ADD(pub_len, mbedtls_pk_write_pubkey_der(ctx->key,
-                                                              buf, c - buf));
+                                                              buf, (size_t) (c - buf)));
     c -= pub_len;
     len += pub_len;
 
@@ -288,7 +276,7 @@
                              MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE));
 
     /* Zero the unused bytes at the start of buf */
-    memset(buf, 0, c2 - buf);
+    memset(buf, 0, (size_t) (c2 - buf));
 
     return (int) len;
 }