diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index f129733..9976d72 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -86,15 +86,15 @@
 #include "mbedtls/sha512.h"
 #include "mbedtls/xtea.h"
 
-#define ARRAY_LENGTH( array ) ( sizeof( array ) / sizeof( *( array ) ) )
+#define ARRAY_LENGTH(array) (sizeof(array) / sizeof(*(array)))
 
 /****************************************************************/
 /* Global data, support functions and library management */
 /****************************************************************/
 
-static int key_type_is_raw_bytes( psa_key_type_t type )
+static int key_type_is_raw_bytes(psa_key_type_t type)
 {
-    return( PSA_KEY_TYPE_IS_UNSTRUCTURED( type ) );
+    return PSA_KEY_TYPE_IS_UNSTRUCTURED(type);
 }
 
 /* Values for psa_global_data_t::rng_state */
@@ -102,8 +102,7 @@
 #define RNG_INITIALIZED 1
 #define RNG_SEEDED 2
 
-typedef struct
-{
+typedef struct {
     unsigned initialized : 1;
     unsigned rng_state : 2;
     mbedtls_psa_random_context_t rng;
@@ -117,40 +116,39 @@
 #endif
 
 #define GUARD_MODULE_INITIALIZED        \
-    if( global_data.initialized == 0 )  \
-        return( PSA_ERROR_BAD_STATE );
+    if (global_data.initialized == 0)  \
+    return PSA_ERROR_BAD_STATE;
 
-psa_status_t mbedtls_to_psa_error( int ret )
+psa_status_t mbedtls_to_psa_error(int ret)
 {
     /* Mbed TLS error codes can combine a high-level error code and a
      * low-level error code. The low-level error usually reflects the
      * root cause better, so dispatch on that preferably. */
-    int low_level_ret = - ( -ret & 0x007f );
-    switch( low_level_ret != 0 ? low_level_ret : ret )
-    {
+    int low_level_ret = -(-ret & 0x007f);
+    switch (low_level_ret != 0 ? low_level_ret : ret) {
         case 0:
-            return( PSA_SUCCESS );
+            return PSA_SUCCESS;
 
         case MBEDTLS_ERR_AES_INVALID_KEY_LENGTH:
         case MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH:
         case MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
         case MBEDTLS_ERR_AES_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_ARC4_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_ASN1_OUT_OF_DATA:
         case MBEDTLS_ERR_ASN1_UNEXPECTED_TAG:
         case MBEDTLS_ERR_ASN1_INVALID_LENGTH:
         case MBEDTLS_ERR_ASN1_LENGTH_MISMATCH:
         case MBEDTLS_ERR_ASN1_INVALID_DATA:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_ASN1_ALLOC_FAILED:
-            return( PSA_ERROR_INSUFFICIENT_MEMORY );
+            return PSA_ERROR_INSUFFICIENT_MEMORY;
         case MBEDTLS_ERR_ASN1_BUF_TOO_SMALL:
-            return( PSA_ERROR_BUFFER_TOO_SMALL );
+            return PSA_ERROR_BUFFER_TOO_SMALL;
 
 #if defined(MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA)
         case MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA:
@@ -158,9 +156,9 @@
         case MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH:
 #endif
         case MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
         case MBEDTLS_ERR_BLOWFISH_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
 #if defined(MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA)
         case MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA:
@@ -168,209 +166,209 @@
         case MBEDTLS_ERR_CAMELLIA_INVALID_KEY_LENGTH:
 #endif
         case MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
         case MBEDTLS_ERR_CAMELLIA_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_CCM_BAD_INPUT:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_CCM_AUTH_FAILED:
-            return( PSA_ERROR_INVALID_SIGNATURE );
+            return PSA_ERROR_INVALID_SIGNATURE;
         case MBEDTLS_ERR_CCM_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
 
         case MBEDTLS_ERR_CHACHAPOLY_BAD_STATE:
-            return( PSA_ERROR_BAD_STATE );
+            return PSA_ERROR_BAD_STATE;
         case MBEDTLS_ERR_CHACHAPOLY_AUTH_FAILED:
-            return( PSA_ERROR_INVALID_SIGNATURE );
+            return PSA_ERROR_INVALID_SIGNATURE;
 
         case MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
         case MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_CIPHER_ALLOC_FAILED:
-            return( PSA_ERROR_INSUFFICIENT_MEMORY );
+            return PSA_ERROR_INSUFFICIENT_MEMORY;
         case MBEDTLS_ERR_CIPHER_INVALID_PADDING:
-            return( PSA_ERROR_INVALID_PADDING );
+            return PSA_ERROR_INVALID_PADDING;
         case MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_CIPHER_AUTH_FAILED:
-            return( PSA_ERROR_INVALID_SIGNATURE );
+            return PSA_ERROR_INVALID_SIGNATURE;
         case MBEDTLS_ERR_CIPHER_INVALID_CONTEXT:
-            return( PSA_ERROR_CORRUPTION_DETECTED );
+            return PSA_ERROR_CORRUPTION_DETECTED;
         case MBEDTLS_ERR_CIPHER_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_CMAC_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
-#if !( defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) ||      \
-       defined(MBEDTLS_PSA_HMAC_DRBG_MD_TYPE) )
+#if !(defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) ||      \
+            defined(MBEDTLS_PSA_HMAC_DRBG_MD_TYPE))
         /* Only check CTR_DRBG error codes if underlying mbedtls_xxx
          * functions are passed a CTR_DRBG instance. */
         case MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED:
-            return( PSA_ERROR_INSUFFICIENT_ENTROPY );
+            return PSA_ERROR_INSUFFICIENT_ENTROPY;
         case MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG:
         case MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
         case MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR:
-            return( PSA_ERROR_INSUFFICIENT_ENTROPY );
+            return PSA_ERROR_INSUFFICIENT_ENTROPY;
 #endif
 
         case MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
         case MBEDTLS_ERR_DES_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED:
         case MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE:
         case MBEDTLS_ERR_ENTROPY_SOURCE_FAILED:
-            return( PSA_ERROR_INSUFFICIENT_ENTROPY );
+            return PSA_ERROR_INSUFFICIENT_ENTROPY;
 
         case MBEDTLS_ERR_GCM_AUTH_FAILED:
-            return( PSA_ERROR_INVALID_SIGNATURE );
+            return PSA_ERROR_INVALID_SIGNATURE;
         case MBEDTLS_ERR_GCM_BAD_INPUT:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_GCM_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
 #if !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) &&        \
-    defined(MBEDTLS_PSA_HMAC_DRBG_MD_TYPE)
+            defined(MBEDTLS_PSA_HMAC_DRBG_MD_TYPE)
         /* Only check HMAC_DRBG error codes if underlying mbedtls_xxx
          * functions are passed a HMAC_DRBG instance. */
         case MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED:
-            return( PSA_ERROR_INSUFFICIENT_ENTROPY );
+            return PSA_ERROR_INSUFFICIENT_ENTROPY;
         case MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG:
         case MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
         case MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR:
-            return( PSA_ERROR_INSUFFICIENT_ENTROPY );
+            return PSA_ERROR_INSUFFICIENT_ENTROPY;
 #endif
 
         case MBEDTLS_ERR_MD2_HW_ACCEL_FAILED:
         case MBEDTLS_ERR_MD4_HW_ACCEL_FAILED:
         case MBEDTLS_ERR_MD5_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
         case MBEDTLS_ERR_MD_BAD_INPUT_DATA:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_MD_ALLOC_FAILED:
-            return( PSA_ERROR_INSUFFICIENT_MEMORY );
+            return PSA_ERROR_INSUFFICIENT_MEMORY;
         case MBEDTLS_ERR_MD_FILE_IO_ERROR:
-            return( PSA_ERROR_STORAGE_FAILURE );
+            return PSA_ERROR_STORAGE_FAILURE;
         case MBEDTLS_ERR_MD_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_MPI_FILE_IO_ERROR:
-            return( PSA_ERROR_STORAGE_FAILURE );
+            return PSA_ERROR_STORAGE_FAILURE;
         case MBEDTLS_ERR_MPI_BAD_INPUT_DATA:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_MPI_INVALID_CHARACTER:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL:
-            return( PSA_ERROR_BUFFER_TOO_SMALL );
+            return PSA_ERROR_BUFFER_TOO_SMALL;
         case MBEDTLS_ERR_MPI_NEGATIVE_VALUE:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_MPI_DIVISION_BY_ZERO:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_MPI_NOT_ACCEPTABLE:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_MPI_ALLOC_FAILED:
-            return( PSA_ERROR_INSUFFICIENT_MEMORY );
+            return PSA_ERROR_INSUFFICIENT_MEMORY;
 
         case MBEDTLS_ERR_PK_ALLOC_FAILED:
-            return( PSA_ERROR_INSUFFICIENT_MEMORY );
+            return PSA_ERROR_INSUFFICIENT_MEMORY;
         case MBEDTLS_ERR_PK_TYPE_MISMATCH:
         case MBEDTLS_ERR_PK_BAD_INPUT_DATA:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_PK_FILE_IO_ERROR:
-            return( PSA_ERROR_STORAGE_FAILURE );
+            return PSA_ERROR_STORAGE_FAILURE;
         case MBEDTLS_ERR_PK_KEY_INVALID_VERSION:
         case MBEDTLS_ERR_PK_KEY_INVALID_FORMAT:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_PK_UNKNOWN_PK_ALG:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
         case MBEDTLS_ERR_PK_PASSWORD_REQUIRED:
         case MBEDTLS_ERR_PK_PASSWORD_MISMATCH:
-            return( PSA_ERROR_NOT_PERMITTED );
+            return PSA_ERROR_NOT_PERMITTED;
         case MBEDTLS_ERR_PK_INVALID_PUBKEY:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_PK_INVALID_ALG:
         case MBEDTLS_ERR_PK_UNKNOWN_NAMED_CURVE:
         case MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
         case MBEDTLS_ERR_PK_SIG_LEN_MISMATCH:
-            return( PSA_ERROR_INVALID_SIGNATURE );
+            return PSA_ERROR_INVALID_SIGNATURE;
         case MBEDTLS_ERR_PK_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
         case MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
 
         case MBEDTLS_ERR_RIPEMD160_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_RSA_BAD_INPUT_DATA:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_RSA_INVALID_PADDING:
-            return( PSA_ERROR_INVALID_PADDING );
+            return PSA_ERROR_INVALID_PADDING;
         case MBEDTLS_ERR_RSA_KEY_GEN_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
         case MBEDTLS_ERR_RSA_KEY_CHECK_FAILED:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_RSA_PUBLIC_FAILED:
         case MBEDTLS_ERR_RSA_PRIVATE_FAILED:
-            return( PSA_ERROR_CORRUPTION_DETECTED );
+            return PSA_ERROR_CORRUPTION_DETECTED;
         case MBEDTLS_ERR_RSA_VERIFY_FAILED:
-            return( PSA_ERROR_INVALID_SIGNATURE );
+            return PSA_ERROR_INVALID_SIGNATURE;
         case MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE:
-            return( PSA_ERROR_BUFFER_TOO_SMALL );
+            return PSA_ERROR_BUFFER_TOO_SMALL;
         case MBEDTLS_ERR_RSA_RNG_FAILED:
-            return( PSA_ERROR_INSUFFICIENT_ENTROPY );
+            return PSA_ERROR_INSUFFICIENT_ENTROPY;
         case MBEDTLS_ERR_RSA_UNSUPPORTED_OPERATION:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
         case MBEDTLS_ERR_RSA_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_SHA1_HW_ACCEL_FAILED:
         case MBEDTLS_ERR_SHA256_HW_ACCEL_FAILED:
         case MBEDTLS_ERR_SHA512_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_ECP_BAD_INPUT_DATA:
         case MBEDTLS_ERR_ECP_INVALID_KEY:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         case MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL:
-            return( PSA_ERROR_BUFFER_TOO_SMALL );
+            return PSA_ERROR_BUFFER_TOO_SMALL;
         case MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
         case MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH:
         case MBEDTLS_ERR_ECP_VERIFY_FAILED:
-            return( PSA_ERROR_INVALID_SIGNATURE );
+            return PSA_ERROR_INVALID_SIGNATURE;
         case MBEDTLS_ERR_ECP_ALLOC_FAILED:
-            return( PSA_ERROR_INSUFFICIENT_MEMORY );
+            return PSA_ERROR_INSUFFICIENT_MEMORY;
         case MBEDTLS_ERR_ECP_RANDOM_FAILED:
-            return( PSA_ERROR_INSUFFICIENT_ENTROPY );
+            return PSA_ERROR_INSUFFICIENT_ENTROPY;
         case MBEDTLS_ERR_ECP_HW_ACCEL_FAILED:
-            return( PSA_ERROR_HARDWARE_FAILURE );
+            return PSA_ERROR_HARDWARE_FAILURE;
 
         case MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED:
-            return( PSA_ERROR_CORRUPTION_DETECTED );
+            return PSA_ERROR_CORRUPTION_DETECTED;
 
         default:
-            return( PSA_ERROR_GENERIC_ERROR );
+            return PSA_ERROR_GENERIC_ERROR;
     }
 }
 
@@ -386,99 +384,96 @@
     defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \
     defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) || \
     defined(MBEDTLS_PSA_BUILTIN_ALG_ECDH)
-mbedtls_ecp_group_id mbedtls_ecc_group_of_psa( psa_ecc_family_t curve,
-                                               size_t bits,
-                                               int bits_is_sloppy )
+mbedtls_ecp_group_id mbedtls_ecc_group_of_psa(psa_ecc_family_t curve,
+                                              size_t bits,
+                                              int bits_is_sloppy)
 {
-    switch( curve )
-    {
+    switch (curve) {
         case PSA_ECC_FAMILY_SECP_R1:
-            switch( bits )
-            {
+            switch (bits) {
 #if defined(PSA_WANT_ECC_SECP_R1_192)
                 case 192:
-                    return( MBEDTLS_ECP_DP_SECP192R1 );
+                    return MBEDTLS_ECP_DP_SECP192R1;
 #endif
 #if defined(PSA_WANT_ECC_SECP_R1_224)
                 case 224:
-                    return( MBEDTLS_ECP_DP_SECP224R1 );
+                    return MBEDTLS_ECP_DP_SECP224R1;
 #endif
 #if defined(PSA_WANT_ECC_SECP_R1_256)
                 case 256:
-                    return( MBEDTLS_ECP_DP_SECP256R1 );
+                    return MBEDTLS_ECP_DP_SECP256R1;
 #endif
 #if defined(PSA_WANT_ECC_SECP_R1_384)
                 case 384:
-                    return( MBEDTLS_ECP_DP_SECP384R1 );
+                    return MBEDTLS_ECP_DP_SECP384R1;
 #endif
 #if defined(PSA_WANT_ECC_SECP_R1_521)
                 case 521:
-                    return( MBEDTLS_ECP_DP_SECP521R1 );
+                    return MBEDTLS_ECP_DP_SECP521R1;
                 case 528:
-                    if( bits_is_sloppy )
-                        return( MBEDTLS_ECP_DP_SECP521R1 );
+                    if (bits_is_sloppy) {
+                        return MBEDTLS_ECP_DP_SECP521R1;
+                    }
                     break;
 #endif
             }
             break;
 
         case PSA_ECC_FAMILY_BRAINPOOL_P_R1:
-            switch( bits )
-            {
+            switch (bits) {
 #if defined(PSA_WANT_ECC_BRAINPOOL_P_R1_256)
                 case 256:
-                    return( MBEDTLS_ECP_DP_BP256R1 );
+                    return MBEDTLS_ECP_DP_BP256R1;
 #endif
 #if defined(PSA_WANT_ECC_BRAINPOOL_P_R1_384)
                 case 384:
-                    return( MBEDTLS_ECP_DP_BP384R1 );
+                    return MBEDTLS_ECP_DP_BP384R1;
 #endif
 #if defined(PSA_WANT_ECC_BRAINPOOL_P_R1_512)
                 case 512:
-                    return( MBEDTLS_ECP_DP_BP512R1 );
+                    return MBEDTLS_ECP_DP_BP512R1;
 #endif
             }
             break;
 
         case PSA_ECC_FAMILY_MONTGOMERY:
-            switch( bits )
-            {
+            switch (bits) {
 #if defined(PSA_WANT_ECC_MONTGOMERY_255)
                 case 255:
-                    return( MBEDTLS_ECP_DP_CURVE25519 );
+                    return MBEDTLS_ECP_DP_CURVE25519;
                 case 256:
-                    if( bits_is_sloppy )
-                        return( MBEDTLS_ECP_DP_CURVE25519 );
+                    if (bits_is_sloppy) {
+                        return MBEDTLS_ECP_DP_CURVE25519;
+                    }
                     break;
 #endif
 #if defined(PSA_WANT_ECC_MONTGOMERY_448)
                 case 448:
-                    return( MBEDTLS_ECP_DP_CURVE448 );
+                    return MBEDTLS_ECP_DP_CURVE448;
 #endif
             }
             break;
 
         case PSA_ECC_FAMILY_SECP_K1:
-            switch( bits )
-            {
+            switch (bits) {
 #if defined(PSA_WANT_ECC_SECP_K1_192)
                 case 192:
-                    return( MBEDTLS_ECP_DP_SECP192K1 );
+                    return MBEDTLS_ECP_DP_SECP192K1;
 #endif
 #if defined(PSA_WANT_ECC_SECP_K1_224)
                 case 224:
-                    return( MBEDTLS_ECP_DP_SECP224K1 );
+                    return MBEDTLS_ECP_DP_SECP224K1;
 #endif
 #if defined(PSA_WANT_ECC_SECP_K1_256)
                 case 256:
-                    return( MBEDTLS_ECP_DP_SECP256K1 );
+                    return MBEDTLS_ECP_DP_SECP256K1;
 #endif
             }
             break;
     }
 
     (void) bits_is_sloppy;
-    return( MBEDTLS_ECP_DP_NONE );
+    return MBEDTLS_ECP_DP_NONE;
 }
 #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR) ||
           defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) ||
@@ -486,59 +481,65 @@
           defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) ||
           defined(MBEDTLS_PSA_BUILTIN_ALG_ECDH) */
 
-static psa_status_t validate_unstructured_key_bit_size( psa_key_type_t type,
-                                                        size_t bits )
+static psa_status_t validate_unstructured_key_bit_size(psa_key_type_t type,
+                                                       size_t bits)
 {
     /* Check that the bit size is acceptable for the key type */
-    switch( type )
-    {
+    switch (type) {
         case PSA_KEY_TYPE_RAW_DATA:
         case PSA_KEY_TYPE_HMAC:
         case PSA_KEY_TYPE_DERIVE:
             break;
 #if defined(PSA_WANT_KEY_TYPE_AES)
         case PSA_KEY_TYPE_AES:
-            if( bits != 128 && bits != 192 && bits != 256 )
-                return( PSA_ERROR_INVALID_ARGUMENT );
+            if (bits != 128 && bits != 192 && bits != 256) {
+                return PSA_ERROR_INVALID_ARGUMENT;
+            }
             break;
 #endif
 #if defined(PSA_WANT_KEY_TYPE_ARIA)
         case PSA_KEY_TYPE_ARIA:
-            if( bits != 128 && bits != 192 && bits != 256 )
-                return( PSA_ERROR_INVALID_ARGUMENT );
+            if (bits != 128 && bits != 192 && bits != 256) {
+                return PSA_ERROR_INVALID_ARGUMENT;
+            }
             break;
 #endif
 #if defined(PSA_WANT_KEY_TYPE_CAMELLIA)
         case PSA_KEY_TYPE_CAMELLIA:
-            if( bits != 128 && bits != 192 && bits != 256 )
-                return( PSA_ERROR_INVALID_ARGUMENT );
+            if (bits != 128 && bits != 192 && bits != 256) {
+                return PSA_ERROR_INVALID_ARGUMENT;
+            }
             break;
 #endif
 #if defined(PSA_WANT_KEY_TYPE_DES)
         case PSA_KEY_TYPE_DES:
-            if( bits != 64 && bits != 128 && bits != 192 )
-                return( PSA_ERROR_INVALID_ARGUMENT );
+            if (bits != 64 && bits != 128 && bits != 192) {
+                return PSA_ERROR_INVALID_ARGUMENT;
+            }
             break;
 #endif
 #if defined(PSA_WANT_KEY_TYPE_ARC4)
         case PSA_KEY_TYPE_ARC4:
-            if( bits < 8 || bits > 2048 )
-                return( PSA_ERROR_INVALID_ARGUMENT );
+            if (bits < 8 || bits > 2048) {
+                return PSA_ERROR_INVALID_ARGUMENT;
+            }
             break;
 #endif
 #if defined(PSA_WANT_KEY_TYPE_CHACHA20)
         case PSA_KEY_TYPE_CHACHA20:
-            if( bits != 256 )
-                return( PSA_ERROR_INVALID_ARGUMENT );
+            if (bits != 256) {
+                return PSA_ERROR_INVALID_ARGUMENT;
+            }
             break;
 #endif
         default:
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
     }
-    if( bits % 8 != 0 )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (bits % 8 != 0) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
 /** Check whether a given key type is valid for use with a given MAC algorithm
@@ -557,124 +558,125 @@
  */
 MBEDTLS_STATIC_TESTABLE psa_status_t psa_mac_key_can_do(
     psa_algorithm_t algorithm,
-    psa_key_type_t key_type )
+    psa_key_type_t key_type)
 {
-    if( PSA_ALG_IS_HMAC( algorithm ) )
-    {
-        if( key_type == PSA_KEY_TYPE_HMAC )
-            return( PSA_SUCCESS );
-    }
-
-    if( PSA_ALG_IS_BLOCK_CIPHER_MAC( algorithm ) )
-    {
-        /* Check that we're calling PSA_BLOCK_CIPHER_BLOCK_LENGTH with a cipher
-         * key. */
-        if( ( key_type & PSA_KEY_TYPE_CATEGORY_MASK ) ==
-            PSA_KEY_TYPE_CATEGORY_SYMMETRIC )
-        {
-            /* PSA_BLOCK_CIPHER_BLOCK_LENGTH returns 1 for stream ciphers and
-             * the block length (larger than 1) for block ciphers. */
-            if( PSA_BLOCK_CIPHER_BLOCK_LENGTH( key_type ) > 1 )
-                return( PSA_SUCCESS );
+    if (PSA_ALG_IS_HMAC(algorithm)) {
+        if (key_type == PSA_KEY_TYPE_HMAC) {
+            return PSA_SUCCESS;
         }
     }
 
-    return( PSA_ERROR_INVALID_ARGUMENT );
+    if (PSA_ALG_IS_BLOCK_CIPHER_MAC(algorithm)) {
+        /* Check that we're calling PSA_BLOCK_CIPHER_BLOCK_LENGTH with a cipher
+         * key. */
+        if ((key_type & PSA_KEY_TYPE_CATEGORY_MASK) ==
+            PSA_KEY_TYPE_CATEGORY_SYMMETRIC) {
+            /* PSA_BLOCK_CIPHER_BLOCK_LENGTH returns 1 for stream ciphers and
+             * the block length (larger than 1) for block ciphers. */
+            if (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) > 1) {
+                return PSA_SUCCESS;
+            }
+        }
+    }
+
+    return PSA_ERROR_INVALID_ARGUMENT;
 }
 
-psa_status_t psa_allocate_buffer_to_slot( psa_key_slot_t *slot,
-                                          size_t buffer_length )
+psa_status_t psa_allocate_buffer_to_slot(psa_key_slot_t *slot,
+                                         size_t buffer_length)
 {
-    if( slot->key.data != NULL )
-        return( PSA_ERROR_ALREADY_EXISTS );
+    if (slot->key.data != NULL) {
+        return PSA_ERROR_ALREADY_EXISTS;
+    }
 
-    slot->key.data = mbedtls_calloc( 1, buffer_length );
-    if( slot->key.data == NULL )
-        return( PSA_ERROR_INSUFFICIENT_MEMORY );
+    slot->key.data = mbedtls_calloc(1, buffer_length);
+    if (slot->key.data == NULL) {
+        return PSA_ERROR_INSUFFICIENT_MEMORY;
+    }
 
     slot->key.bytes = buffer_length;
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
-psa_status_t psa_copy_key_material_into_slot( psa_key_slot_t *slot,
-                                              const uint8_t* data,
-                                              size_t data_length )
+psa_status_t psa_copy_key_material_into_slot(psa_key_slot_t *slot,
+                                             const uint8_t *data,
+                                             size_t data_length)
 {
-    psa_status_t status = psa_allocate_buffer_to_slot( slot,
-                                                       data_length );
-    if( status != PSA_SUCCESS )
-        return( status );
+    psa_status_t status = psa_allocate_buffer_to_slot(slot,
+                                                      data_length);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
-    memcpy( slot->key.data, data, data_length );
-    return( PSA_SUCCESS );
+    memcpy(slot->key.data, data, data_length);
+    return PSA_SUCCESS;
 }
 
 psa_status_t psa_import_key_into_slot(
     const psa_key_attributes_t *attributes,
     const uint8_t *data, size_t data_length,
     uint8_t *key_buffer, size_t key_buffer_size,
-    size_t *key_buffer_length, size_t *bits )
+    size_t *key_buffer_length, size_t *bits)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_type_t type = attributes->core.type;
 
     /* zero-length keys are never supported. */
-    if( data_length == 0 )
-        return( PSA_ERROR_NOT_SUPPORTED );
+    if (data_length == 0) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
 
-    if( key_type_is_raw_bytes( type ) )
-    {
-        *bits = PSA_BYTES_TO_BITS( data_length );
+    if (key_type_is_raw_bytes(type)) {
+        *bits = PSA_BYTES_TO_BITS(data_length);
 
         /* Ensure that the bytes-to-bits conversion hasn't overflown. */
-        if( data_length > SIZE_MAX / 8 )
-            return( PSA_ERROR_NOT_SUPPORTED );
+        if (data_length > SIZE_MAX / 8) {
+            return PSA_ERROR_NOT_SUPPORTED;
+        }
 
         /* Enforce a size limit, and in particular ensure that the bit
          * size fits in its representation type. */
-        if( ( *bits ) > PSA_MAX_KEY_BITS )
-            return( PSA_ERROR_NOT_SUPPORTED );
+        if ((*bits) > PSA_MAX_KEY_BITS) {
+            return PSA_ERROR_NOT_SUPPORTED;
+        }
 
-        status = validate_unstructured_key_bit_size( type, *bits );
-        if( status != PSA_SUCCESS )
-            return( status );
+        status = validate_unstructured_key_bit_size(type, *bits);
+        if (status != PSA_SUCCESS) {
+            return status;
+        }
 
         /* Copy the key material. */
-        memcpy( key_buffer, data, data_length );
+        memcpy(key_buffer, data, data_length);
         *key_buffer_length = data_length;
-        (void)key_buffer_size;
+        (void) key_buffer_size;
 
-        return( PSA_SUCCESS );
-    }
-    else if( PSA_KEY_TYPE_IS_ASYMMETRIC( type ) )
-    {
+        return PSA_SUCCESS;
+    } else if (PSA_KEY_TYPE_IS_ASYMMETRIC(type)) {
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR) || \
-    defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY)
-        if( PSA_KEY_TYPE_IS_ECC( type ) )
-        {
-            return( mbedtls_psa_ecp_import_key( attributes,
-                                                data, data_length,
-                                                key_buffer, key_buffer_size,
-                                                key_buffer_length,
-                                                bits ) );
+        defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY)
+        if (PSA_KEY_TYPE_IS_ECC(type)) {
+            return mbedtls_psa_ecp_import_key(attributes,
+                                              data, data_length,
+                                              key_buffer, key_buffer_size,
+                                              key_buffer_length,
+                                              bits);
         }
 #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR) ||
         * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) */
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) || \
-    defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY)
-        if( PSA_KEY_TYPE_IS_RSA( type ) )
-        {
-            return( mbedtls_psa_rsa_import_key( attributes,
-                                                data, data_length,
-                                                key_buffer, key_buffer_size,
-                                                key_buffer_length,
-                                                bits ) );
+        defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY)
+        if (PSA_KEY_TYPE_IS_RSA(type)) {
+            return mbedtls_psa_rsa_import_key(attributes,
+                                              data, data_length,
+                                              key_buffer, key_buffer_size,
+                                              key_buffer_length,
+                                              bits);
         }
 #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) ||
         * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */
     }
 
-    return( PSA_ERROR_NOT_SUPPORTED );
+    return PSA_ERROR_NOT_SUPPORTED;
 }
 
 /** Calculate the intersection of two algorithm usage policies.
@@ -684,63 +686,61 @@
 static psa_algorithm_t psa_key_policy_algorithm_intersection(
     psa_key_type_t key_type,
     psa_algorithm_t alg1,
-    psa_algorithm_t alg2 )
+    psa_algorithm_t alg2)
 {
     /* Common case: both sides actually specify the same policy. */
-    if( alg1 == alg2 )
-        return( alg1 );
+    if (alg1 == alg2) {
+        return alg1;
+    }
     /* If the policies are from the same hash-and-sign family, check
      * if one is a wildcard. If so the other has the specific algorithm. */
-    if( PSA_ALG_IS_SIGN_HASH( alg1 ) &&
-        PSA_ALG_IS_SIGN_HASH( alg2 ) &&
-        ( alg1 & ~PSA_ALG_HASH_MASK ) == ( alg2 & ~PSA_ALG_HASH_MASK ) )
-    {
-        if( PSA_ALG_SIGN_GET_HASH( alg1 ) == PSA_ALG_ANY_HASH )
-            return( alg2 );
-        if( PSA_ALG_SIGN_GET_HASH( alg2 ) == PSA_ALG_ANY_HASH )
-            return( alg1 );
+    if (PSA_ALG_IS_SIGN_HASH(alg1) &&
+        PSA_ALG_IS_SIGN_HASH(alg2) &&
+        (alg1 & ~PSA_ALG_HASH_MASK) == (alg2 & ~PSA_ALG_HASH_MASK)) {
+        if (PSA_ALG_SIGN_GET_HASH(alg1) == PSA_ALG_ANY_HASH) {
+            return alg2;
+        }
+        if (PSA_ALG_SIGN_GET_HASH(alg2) == PSA_ALG_ANY_HASH) {
+            return alg1;
+        }
     }
     /* If the policies are from the same AEAD family, check whether
      * one of them is a minimum-tag-length wildcard. Calculate the most
      * restrictive tag length. */
-    if( PSA_ALG_IS_AEAD( alg1 ) && PSA_ALG_IS_AEAD( alg2 ) &&
-        ( PSA_ALG_AEAD_WITH_SHORTENED_TAG( alg1, 0 ) ==
-          PSA_ALG_AEAD_WITH_SHORTENED_TAG( alg2, 0 ) ) )
-    {
-        size_t alg1_len = PSA_ALG_AEAD_GET_TAG_LENGTH( alg1 );
-        size_t alg2_len = PSA_ALG_AEAD_GET_TAG_LENGTH( alg2 );
+    if (PSA_ALG_IS_AEAD(alg1) && PSA_ALG_IS_AEAD(alg2) &&
+        (PSA_ALG_AEAD_WITH_SHORTENED_TAG(alg1, 0) ==
+         PSA_ALG_AEAD_WITH_SHORTENED_TAG(alg2, 0))) {
+        size_t alg1_len = PSA_ALG_AEAD_GET_TAG_LENGTH(alg1);
+        size_t alg2_len = PSA_ALG_AEAD_GET_TAG_LENGTH(alg2);
         size_t restricted_len = alg1_len > alg2_len ? alg1_len : alg2_len;
 
         /* If both are wildcards, return most restrictive wildcard */
-        if( ( ( alg1 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG ) != 0 ) &&
-            ( ( alg2 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG ) != 0 ) )
-        {
-            return( PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG(
-                        alg1, restricted_len ) );
+        if (((alg1 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0) &&
+            ((alg2 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0)) {
+            return PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG(
+                alg1, restricted_len);
         }
         /* If only one is a wildcard, return specific algorithm if compatible. */
-        if( ( ( alg1 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG ) != 0 ) &&
-            ( alg1_len <= alg2_len ) )
-        {
-            return( alg2 );
+        if (((alg1 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0) &&
+            (alg1_len <= alg2_len)) {
+            return alg2;
         }
-        if( ( ( alg2 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG ) != 0 ) &&
-            ( alg2_len <= alg1_len ) )
-        {
-            return( alg1 );
+        if (((alg2 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0) &&
+            (alg2_len <= alg1_len)) {
+            return alg1;
         }
     }
     /* If the policies are from the same MAC family, check whether one
      * of them is a minimum-MAC-length policy. Calculate the most
      * restrictive tag length. */
-    if( PSA_ALG_IS_MAC( alg1 ) && PSA_ALG_IS_MAC( alg2 ) &&
-        ( PSA_ALG_FULL_LENGTH_MAC( alg1 ) ==
-          PSA_ALG_FULL_LENGTH_MAC( alg2 ) ) )
-    {
+    if (PSA_ALG_IS_MAC(alg1) && PSA_ALG_IS_MAC(alg2) &&
+        (PSA_ALG_FULL_LENGTH_MAC(alg1) ==
+         PSA_ALG_FULL_LENGTH_MAC(alg2))) {
         /* Validate the combination of key type and algorithm. Since the base
          * algorithm of alg1 and alg2 are the same, we only need this once. */
-        if( PSA_SUCCESS != psa_mac_key_can_do( alg1, key_type ) )
-            return( 0 );
+        if (PSA_SUCCESS != psa_mac_key_can_do(alg1, key_type)) {
+            return 0;
+        }
 
         /* Get the (exact or at-least) output lengths for both sides of the
          * requested intersection. None of the currently supported algorithms
@@ -750,79 +750,76 @@
          * Note that for at-least-this-length wildcard algorithms, the output
          * length is set to the shortest allowed length, which allows us to
          * calculate the most restrictive tag length for the intersection. */
-        size_t alg1_len = PSA_MAC_LENGTH( key_type, 0, alg1 );
-        size_t alg2_len = PSA_MAC_LENGTH( key_type, 0, alg2 );
+        size_t alg1_len = PSA_MAC_LENGTH(key_type, 0, alg1);
+        size_t alg2_len = PSA_MAC_LENGTH(key_type, 0, alg2);
         size_t restricted_len = alg1_len > alg2_len ? alg1_len : alg2_len;
 
         /* If both are wildcards, return most restrictive wildcard */
-        if( ( ( alg1 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG ) != 0 ) &&
-            ( ( alg2 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG ) != 0 ) )
-        {
-            return( PSA_ALG_AT_LEAST_THIS_LENGTH_MAC( alg1, restricted_len ) );
+        if (((alg1 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0) &&
+            ((alg2 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0)) {
+            return PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(alg1, restricted_len);
         }
 
         /* If only one is an at-least-this-length policy, the intersection would
          * be the other (fixed-length) policy as long as said fixed length is
          * equal to or larger than the shortest allowed length. */
-        if( ( alg1 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG ) != 0 )
-        {
-            return( ( alg1_len <= alg2_len ) ? alg2 : 0 );
+        if ((alg1 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0) {
+            return (alg1_len <= alg2_len) ? alg2 : 0;
         }
-        if( ( alg2 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG ) != 0 )
-        {
-            return( ( alg2_len <= alg1_len ) ? alg1 : 0 );
+        if ((alg2 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0) {
+            return (alg2_len <= alg1_len) ? alg1 : 0;
         }
 
         /* If none of them are wildcards, check whether they define the same tag
          * length. This is still possible here when one is default-length and
          * the other specific-length. Ensure to always return the
          * specific-length version for the intersection. */
-        if( alg1_len == alg2_len )
-            return( PSA_ALG_TRUNCATED_MAC( alg1, alg1_len ) );
+        if (alg1_len == alg2_len) {
+            return PSA_ALG_TRUNCATED_MAC(alg1, alg1_len);
+        }
     }
     /* If the policies are incompatible, allow nothing. */
-    return( 0 );
+    return 0;
 }
 
-static int psa_key_algorithm_permits( psa_key_type_t key_type,
-                                      psa_algorithm_t policy_alg,
-                                      psa_algorithm_t requested_alg )
+static int psa_key_algorithm_permits(psa_key_type_t key_type,
+                                     psa_algorithm_t policy_alg,
+                                     psa_algorithm_t requested_alg)
 {
     /* Common case: the policy only allows requested_alg. */
-    if( requested_alg == policy_alg )
-        return( 1 );
+    if (requested_alg == policy_alg) {
+        return 1;
+    }
     /* If policy_alg is a hash-and-sign with a wildcard for the hash,
      * and requested_alg is the same hash-and-sign family with any hash,
      * then requested_alg is compliant with policy_alg. */
-    if( PSA_ALG_IS_SIGN_HASH( requested_alg ) &&
-        PSA_ALG_SIGN_GET_HASH( policy_alg ) == PSA_ALG_ANY_HASH )
-    {
-        return( ( policy_alg & ~PSA_ALG_HASH_MASK ) ==
-                ( requested_alg & ~PSA_ALG_HASH_MASK ) );
+    if (PSA_ALG_IS_SIGN_HASH(requested_alg) &&
+        PSA_ALG_SIGN_GET_HASH(policy_alg) == PSA_ALG_ANY_HASH) {
+        return (policy_alg & ~PSA_ALG_HASH_MASK) ==
+               (requested_alg & ~PSA_ALG_HASH_MASK);
     }
     /* If policy_alg is a wildcard AEAD algorithm of the same base as
      * the requested algorithm, check the requested tag length to be
      * equal-length or longer than the wildcard-specified length. */
-    if( PSA_ALG_IS_AEAD( policy_alg ) &&
-        PSA_ALG_IS_AEAD( requested_alg ) &&
-        ( PSA_ALG_AEAD_WITH_SHORTENED_TAG( policy_alg, 0 ) ==
-          PSA_ALG_AEAD_WITH_SHORTENED_TAG( requested_alg, 0 ) ) &&
-        ( ( policy_alg & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG ) != 0 ) )
-    {
-        return( PSA_ALG_AEAD_GET_TAG_LENGTH( policy_alg ) <=
-                PSA_ALG_AEAD_GET_TAG_LENGTH( requested_alg ) );
+    if (PSA_ALG_IS_AEAD(policy_alg) &&
+        PSA_ALG_IS_AEAD(requested_alg) &&
+        (PSA_ALG_AEAD_WITH_SHORTENED_TAG(policy_alg, 0) ==
+         PSA_ALG_AEAD_WITH_SHORTENED_TAG(requested_alg, 0)) &&
+        ((policy_alg & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0)) {
+        return PSA_ALG_AEAD_GET_TAG_LENGTH(policy_alg) <=
+               PSA_ALG_AEAD_GET_TAG_LENGTH(requested_alg);
     }
     /* If policy_alg is a MAC algorithm of the same base as the requested
      * algorithm, check whether their MAC lengths are compatible. */
-    if( PSA_ALG_IS_MAC( policy_alg ) &&
-        PSA_ALG_IS_MAC( requested_alg ) &&
-        ( PSA_ALG_FULL_LENGTH_MAC( policy_alg ) ==
-          PSA_ALG_FULL_LENGTH_MAC( requested_alg ) ) )
-    {
+    if (PSA_ALG_IS_MAC(policy_alg) &&
+        PSA_ALG_IS_MAC(requested_alg) &&
+        (PSA_ALG_FULL_LENGTH_MAC(policy_alg) ==
+         PSA_ALG_FULL_LENGTH_MAC(requested_alg))) {
         /* Validate the combination of key type and algorithm. Since the policy
          * and requested algorithms are the same, we only need this once. */
-        if( PSA_SUCCESS != psa_mac_key_can_do( policy_alg, key_type ) )
-            return( 0 );
+        if (PSA_SUCCESS != psa_mac_key_can_do(policy_alg, key_type)) {
+            return 0;
+        }
 
         /* Get both the requested output length for the algorithm which is to be
          * verified, and the default output length for the base algorithm.
@@ -830,44 +827,42 @@
          * length dependent on actual key size, so setting it to a bogus value
          * of 0 is currently OK. */
         size_t requested_output_length = PSA_MAC_LENGTH(
-                                            key_type, 0, requested_alg );
+            key_type, 0, requested_alg);
         size_t default_output_length = PSA_MAC_LENGTH(
-                                        key_type, 0,
-                                        PSA_ALG_FULL_LENGTH_MAC( requested_alg ) );
+            key_type, 0,
+            PSA_ALG_FULL_LENGTH_MAC(requested_alg));
 
         /* If the policy is default-length, only allow an algorithm with
          * a declared exact-length matching the default. */
-        if( PSA_MAC_TRUNCATED_LENGTH( policy_alg ) == 0 )
-            return( requested_output_length == default_output_length );
+        if (PSA_MAC_TRUNCATED_LENGTH(policy_alg) == 0) {
+            return requested_output_length == default_output_length;
+        }
 
         /* If the requested algorithm is default-length, allow it if the policy
          * length exactly matches the default length. */
-        if( PSA_MAC_TRUNCATED_LENGTH( requested_alg ) == 0 &&
-            PSA_MAC_TRUNCATED_LENGTH( policy_alg ) == default_output_length )
-        {
-            return( 1 );
+        if (PSA_MAC_TRUNCATED_LENGTH(requested_alg) == 0 &&
+            PSA_MAC_TRUNCATED_LENGTH(policy_alg) == default_output_length) {
+            return 1;
         }
 
         /* If policy_alg is an at-least-this-length wildcard MAC algorithm,
          * check for the requested MAC length to be equal to or longer than the
          * minimum allowed length. */
-        if( ( policy_alg & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG ) != 0 )
-        {
-            return( PSA_MAC_TRUNCATED_LENGTH( policy_alg ) <=
-                    requested_output_length );
+        if ((policy_alg & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0) {
+            return PSA_MAC_TRUNCATED_LENGTH(policy_alg) <=
+                   requested_output_length;
         }
     }
     /* If policy_alg is a generic key agreement operation, then using it for
      * a key derivation with that key agreement should also be allowed. This
      * behaviour is expected to be defined in a future specification version. */
-    if( PSA_ALG_IS_RAW_KEY_AGREEMENT( policy_alg ) &&
-        PSA_ALG_IS_KEY_AGREEMENT( requested_alg ) )
-    {
-        return( PSA_ALG_KEY_AGREEMENT_GET_BASE( requested_alg ) ==
-                policy_alg );
+    if (PSA_ALG_IS_RAW_KEY_AGREEMENT(policy_alg) &&
+        PSA_ALG_IS_KEY_AGREEMENT(requested_alg)) {
+        return PSA_ALG_KEY_AGREEMENT_GET_BASE(requested_alg) ==
+               policy_alg;
     }
     /* If it isn't explicitly permitted, it's forbidden. */
-    return( 0 );
+    return 0;
 }
 
 /** Test whether a policy permits an algorithm.
@@ -885,23 +880,26 @@
  * \retval PSA_ERROR_NOT_PERMITTED      When \p alg is a specific algorithm, but
  *                                      the \p policy does not allow it.
  */
-static psa_status_t psa_key_policy_permits( const psa_key_policy_t *policy,
-                                            psa_key_type_t key_type,
-                                            psa_algorithm_t alg )
+static psa_status_t psa_key_policy_permits(const psa_key_policy_t *policy,
+                                           psa_key_type_t key_type,
+                                           psa_algorithm_t alg)
 {
     /* '0' is not a valid algorithm */
-    if( alg == 0 )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (alg == 0) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
     /* A requested algorithm cannot be a wildcard. */
-    if( PSA_ALG_IS_WILDCARD( alg ) )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (PSA_ALG_IS_WILDCARD(alg)) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
-    if( psa_key_algorithm_permits( key_type, policy->alg, alg ) ||
-        psa_key_algorithm_permits( key_type, policy->alg2, alg ) )
-        return( PSA_SUCCESS );
-    else
-        return( PSA_ERROR_NOT_PERMITTED );
+    if (psa_key_algorithm_permits(key_type, policy->alg, alg) ||
+        psa_key_algorithm_permits(key_type, policy->alg2, alg)) {
+        return PSA_SUCCESS;
+    } else {
+        return PSA_ERROR_NOT_PERMITTED;
+    }
 }
 
 /** Restrict a key policy based on a constraint.
@@ -925,22 +923,24 @@
 static psa_status_t psa_restrict_key_policy(
     psa_key_type_t key_type,
     psa_key_policy_t *policy,
-    const psa_key_policy_t *constraint )
+    const psa_key_policy_t *constraint)
 {
     psa_algorithm_t intersection_alg =
-        psa_key_policy_algorithm_intersection( key_type, policy->alg,
-                                               constraint->alg );
+        psa_key_policy_algorithm_intersection(key_type, policy->alg,
+                                              constraint->alg);
     psa_algorithm_t intersection_alg2 =
-        psa_key_policy_algorithm_intersection( key_type, policy->alg2,
-                                               constraint->alg2 );
-    if( intersection_alg == 0 && policy->alg != 0 && constraint->alg != 0 )
-        return( PSA_ERROR_INVALID_ARGUMENT );
-    if( intersection_alg2 == 0 && policy->alg2 != 0 && constraint->alg2 != 0 )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+        psa_key_policy_algorithm_intersection(key_type, policy->alg2,
+                                              constraint->alg2);
+    if (intersection_alg == 0 && policy->alg != 0 && constraint->alg != 0) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
+    if (intersection_alg2 == 0 && policy->alg2 != 0 && constraint->alg2 != 0) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
     policy->usage &= constraint->usage;
     policy->alg = intersection_alg;
     policy->alg2 = intersection_alg2;
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
 /** Get the description of a key given its identifier and policy constraints
@@ -960,46 +960,47 @@
     mbedtls_svc_key_id_t key,
     psa_key_slot_t **p_slot,
     psa_key_usage_t usage,
-    psa_algorithm_t alg )
+    psa_algorithm_t alg)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
 
-    status = psa_get_and_lock_key_slot( key, p_slot );
-    if( status != PSA_SUCCESS )
-        return( status );
+    status = psa_get_and_lock_key_slot(key, p_slot);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
     slot = *p_slot;
 
     /* Enforce that usage policy for the key slot contains all the flags
      * required by the usage parameter. There is one exception: public
      * keys can always be exported, so we treat public key objects as
      * if they had the export flag. */
-    if( PSA_KEY_TYPE_IS_PUBLIC_KEY( slot->attr.type ) )
+    if (PSA_KEY_TYPE_IS_PUBLIC_KEY(slot->attr.type)) {
         usage &= ~PSA_KEY_USAGE_EXPORT;
+    }
 
-    if( ( slot->attr.policy.usage & usage ) != usage )
-    {
+    if ((slot->attr.policy.usage & usage) != usage) {
         status = PSA_ERROR_NOT_PERMITTED;
         goto error;
     }
 
     /* Enforce that the usage policy permits the requested algorithm. */
-    if( alg != 0 )
-    {
-        status = psa_key_policy_permits( &slot->attr.policy,
-                                         slot->attr.type,
-                                         alg );
-        if( status != PSA_SUCCESS )
+    if (alg != 0) {
+        status = psa_key_policy_permits(&slot->attr.policy,
+                                        slot->attr.type,
+                                        alg);
+        if (status != PSA_SUCCESS) {
             goto error;
+        }
     }
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 
 error:
     *p_slot = NULL;
-    psa_unlock_key_slot( slot );
+    psa_unlock_key_slot(slot);
 
-    return( status );
+    return status;
 }
 
 /** Get a key slot containing a transparent key and lock it.
@@ -1019,42 +1020,43 @@
     mbedtls_svc_key_id_t key,
     psa_key_slot_t **p_slot,
     psa_key_usage_t usage,
-    psa_algorithm_t alg )
+    psa_algorithm_t alg)
 {
-    psa_status_t status = psa_get_and_lock_key_slot_with_policy( key, p_slot,
-                                                                 usage, alg );
-    if( status != PSA_SUCCESS )
-        return( status );
-
-    if( psa_key_lifetime_is_external( (*p_slot)->attr.lifetime ) )
-    {
-        psa_unlock_key_slot( *p_slot );
-        *p_slot = NULL;
-        return( PSA_ERROR_NOT_SUPPORTED );
+    psa_status_t status = psa_get_and_lock_key_slot_with_policy(key, p_slot,
+                                                                usage, alg);
+    if (status != PSA_SUCCESS) {
+        return status;
     }
 
-    return( PSA_SUCCESS );
+    if (psa_key_lifetime_is_external((*p_slot)->attr.lifetime)) {
+        psa_unlock_key_slot(*p_slot);
+        *p_slot = NULL;
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
+
+    return PSA_SUCCESS;
 }
 
-psa_status_t psa_remove_key_data_from_memory( psa_key_slot_t *slot )
+psa_status_t psa_remove_key_data_from_memory(psa_key_slot_t *slot)
 {
     /* Data pointer will always be either a valid pointer or NULL in an
      * initialized slot, so we can just free it. */
-    if( slot->key.data != NULL )
-        mbedtls_platform_zeroize( slot->key.data, slot->key.bytes);
+    if (slot->key.data != NULL) {
+        mbedtls_platform_zeroize(slot->key.data, slot->key.bytes);
+    }
 
-    mbedtls_free( slot->key.data );
+    mbedtls_free(slot->key.data);
     slot->key.data = NULL;
     slot->key.bytes = 0;
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
 /** Completely wipe a slot in memory, including its policy.
  * Persistent storage is not affected. */
-psa_status_t psa_wipe_key_slot( psa_key_slot_t *slot )
+psa_status_t psa_wipe_key_slot(psa_key_slot_t *slot)
 {
-    psa_status_t status = psa_remove_key_data_from_memory( slot );
+    psa_status_t status = psa_remove_key_data_from_memory(slot);
 
     /*
      * As the return error code may not be handled in case of multiple errors,
@@ -1063,10 +1065,9 @@
      * part of the execution of a test suite this will stop the test suite
      * execution).
      */
-    if( slot->lock_count != 1 )
-    {
+    if (slot->lock_count != 1) {
 #ifdef MBEDTLS_CHECK_PARAMS
-        MBEDTLS_PARAM_FAILED( slot->lock_count == 1 );
+        MBEDTLS_PARAM_FAILED(slot->lock_count == 1);
 #endif
         status = PSA_ERROR_CORRUPTION_DETECTED;
     }
@@ -1079,11 +1080,11 @@
     /* At this point, key material and other type-specific content has
      * been wiped. Clear remaining metadata. We can call memset and not
      * zeroize because the metadata is not particularly sensitive. */
-    memset( slot, 0, sizeof( *slot ) );
-    return( status );
+    memset(slot, 0, sizeof(*slot));
+    return status;
 }
 
-psa_status_t psa_destroy_key( mbedtls_svc_key_id_t key )
+psa_status_t psa_destroy_key(mbedtls_svc_key_id_t key)
 {
     psa_key_slot_t *slot;
     psa_status_t status; /* status of the last operation */
@@ -1092,8 +1093,9 @@
     psa_se_drv_table_entry_t *driver;
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
 
-    if( mbedtls_svc_key_id_is_null( key ) )
-        return( PSA_SUCCESS );
+    if (mbedtls_svc_key_id_is_null(key)) {
+        return PSA_SUCCESS;
+    }
 
     /*
      * Get the description of the key in a key slot. In case of a persistent
@@ -1102,9 +1104,10 @@
      * the key is operated by an SE or not and this information is needed by
      * the current implementation.
      */
-    status = psa_get_and_lock_key_slot( key, &slot );
-    if( status != PSA_SUCCESS )
-        return( status );
+    status = psa_get_and_lock_key_slot(key, &slot);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
     /*
      * If the key slot containing the key description is under access by the
@@ -1113,14 +1116,12 @@
      * implemented), the key should be destroyed when all accesses have
      * stopped.
      */
-    if( slot->lock_count > 1 )
-    {
-       psa_unlock_key_slot( slot );
-       return( PSA_ERROR_GENERIC_ERROR );
+    if (slot->lock_count > 1) {
+        psa_unlock_key_slot(slot);
+        return PSA_ERROR_GENERIC_ERROR;
     }
 
-    if( PSA_KEY_LIFETIME_IS_READ_ONLY( slot->attr.lifetime ) )
-    {
+    if (PSA_KEY_LIFETIME_IS_READ_ONLY(slot->attr.lifetime)) {
         /* Refuse the destruction of a read-only key (which may or may not work
          * if we attempt it, depending on whether the key is merely read-only
          * by policy or actually physically read-only).
@@ -1131,22 +1132,20 @@
     }
 
 #if defined(MBEDTLS_PSA_CRYPTO_SE_C)
-    driver = psa_get_se_driver_entry( slot->attr.lifetime );
-    if( driver != NULL )
-    {
+    driver = psa_get_se_driver_entry(slot->attr.lifetime);
+    if (driver != NULL) {
         /* For a key in a secure element, we need to do three things:
          * remove the key file in internal storage, destroy the
          * key inside the secure element, and update the driver's
          * persistent data. Start a transaction that will encompass these
          * three actions. */
-        psa_crypto_prepare_transaction( PSA_CRYPTO_TRANSACTION_DESTROY_KEY );
+        psa_crypto_prepare_transaction(PSA_CRYPTO_TRANSACTION_DESTROY_KEY);
         psa_crypto_transaction.key.lifetime = slot->attr.lifetime;
-        psa_crypto_transaction.key.slot = psa_key_slot_get_slot_number( slot );
+        psa_crypto_transaction.key.slot = psa_key_slot_get_slot_number(slot);
         psa_crypto_transaction.key.id = slot->attr.id;
-        status = psa_crypto_save_transaction( );
-        if( status != PSA_SUCCESS )
-        {
-            (void) psa_crypto_stop_transaction( );
+        status = psa_crypto_save_transaction();
+        if (status != PSA_SUCCESS) {
+            (void) psa_crypto_stop_transaction();
             /* We should still try to destroy the key in the secure
              * element and the key metadata in storage. This is especially
              * important if the error is that the storage is full.
@@ -1158,19 +1157,20 @@
             goto exit;
         }
 
-        status = psa_destroy_se_key( driver,
-                                     psa_key_slot_get_slot_number( slot ) );
-        if( overall_status == PSA_SUCCESS )
+        status = psa_destroy_se_key(driver,
+                                    psa_key_slot_get_slot_number(slot));
+        if (overall_status == PSA_SUCCESS) {
             overall_status = status;
+        }
     }
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
 
 #if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C)
-    if( ! PSA_KEY_LIFETIME_IS_VOLATILE( slot->attr.lifetime ) )
-    {
-        status = psa_destroy_persistent_key( slot->attr.id );
-        if( overall_status == PSA_SUCCESS )
+    if (!PSA_KEY_LIFETIME_IS_VOLATILE(slot->attr.lifetime)) {
+        status = psa_destroy_persistent_key(slot->attr.id);
+        if (overall_status == PSA_SUCCESS) {
             overall_status = status;
+        }
 
         /* TODO: other slots may have a copy of the same key. We should
          * invalidate them.
@@ -1180,96 +1180,100 @@
 #endif /* defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) */
 
 #if defined(MBEDTLS_PSA_CRYPTO_SE_C)
-    if( driver != NULL )
-    {
-        status = psa_save_se_persistent_data( driver );
-        if( overall_status == PSA_SUCCESS )
+    if (driver != NULL) {
+        status = psa_save_se_persistent_data(driver);
+        if (overall_status == PSA_SUCCESS) {
             overall_status = status;
-        status = psa_crypto_stop_transaction( );
-        if( overall_status == PSA_SUCCESS )
+        }
+        status = psa_crypto_stop_transaction();
+        if (overall_status == PSA_SUCCESS) {
             overall_status = status;
+        }
     }
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
 
 exit:
-    status = psa_wipe_key_slot( slot );
+    status = psa_wipe_key_slot(slot);
     /* Prioritize CORRUPTION_DETECTED from wiping over a storage error */
-    if( status != PSA_SUCCESS )
+    if (status != PSA_SUCCESS) {
         overall_status = status;
-    return( overall_status );
+    }
+    return overall_status;
 }
 
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) || \
     defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY)
 static psa_status_t psa_get_rsa_public_exponent(
     const mbedtls_rsa_context *rsa,
-    psa_key_attributes_t *attributes )
+    psa_key_attributes_t *attributes)
 {
     mbedtls_mpi mpi;
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     uint8_t *buffer = NULL;
     size_t buflen;
-    mbedtls_mpi_init( &mpi );
+    mbedtls_mpi_init(&mpi);
 
-    ret = mbedtls_rsa_export( rsa, NULL, NULL, NULL, NULL, &mpi );
-    if( ret != 0 )
+    ret = mbedtls_rsa_export(rsa, NULL, NULL, NULL, NULL, &mpi);
+    if (ret != 0) {
         goto exit;
-    if( mbedtls_mpi_cmp_int( &mpi, 65537 ) == 0 )
-    {
+    }
+    if (mbedtls_mpi_cmp_int(&mpi, 65537) == 0) {
         /* It's the default value, which is reported as an empty string,
          * so there's nothing to do. */
         goto exit;
     }
 
-    buflen = mbedtls_mpi_size( &mpi );
-    buffer = mbedtls_calloc( 1, buflen );
-    if( buffer == NULL )
-    {
+    buflen = mbedtls_mpi_size(&mpi);
+    buffer = mbedtls_calloc(1, buflen);
+    if (buffer == NULL) {
         ret = MBEDTLS_ERR_MPI_ALLOC_FAILED;
         goto exit;
     }
-    ret = mbedtls_mpi_write_binary( &mpi, buffer, buflen );
-    if( ret != 0 )
+    ret = mbedtls_mpi_write_binary(&mpi, buffer, buflen);
+    if (ret != 0) {
         goto exit;
+    }
     attributes->domain_parameters = buffer;
     attributes->domain_parameters_size = buflen;
 
 exit:
-    mbedtls_mpi_free( &mpi );
-    if( ret != 0 )
-        mbedtls_free( buffer );
-    return( mbedtls_to_psa_error( ret ) );
+    mbedtls_mpi_free(&mpi);
+    if (ret != 0) {
+        mbedtls_free(buffer);
+    }
+    return mbedtls_to_psa_error(ret);
 }
 #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) ||
         * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */
 
 /** Retrieve all the publicly-accessible attributes of a key.
  */
-psa_status_t psa_get_key_attributes( mbedtls_svc_key_id_t key,
-                                     psa_key_attributes_t *attributes )
+psa_status_t psa_get_key_attributes(mbedtls_svc_key_id_t key,
+                                    psa_key_attributes_t *attributes)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
 
-    psa_reset_key_attributes( attributes );
+    psa_reset_key_attributes(attributes);
 
-    status = psa_get_and_lock_key_slot_with_policy( key, &slot, 0, 0 );
-    if( status != PSA_SUCCESS )
-        return( status );
+    status = psa_get_and_lock_key_slot_with_policy(key, &slot, 0, 0);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
     attributes->core = slot->attr;
-    attributes->core.flags &= ( MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY |
-                                MBEDTLS_PSA_KA_MASK_DUAL_USE );
+    attributes->core.flags &= (MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY |
+                               MBEDTLS_PSA_KA_MASK_DUAL_USE);
 
 #if defined(MBEDTLS_PSA_CRYPTO_SE_C)
-    if( psa_get_se_driver_entry( slot->attr.lifetime ) != NULL )
-        psa_set_key_slot_number( attributes,
-                                 psa_key_slot_get_slot_number( slot ) );
+    if (psa_get_se_driver_entry(slot->attr.lifetime) != NULL) {
+        psa_set_key_slot_number(attributes,
+                                psa_key_slot_get_slot_number(slot));
+    }
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
 
-    switch( slot->attr.type )
-    {
+    switch (slot->attr.type) {
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) || \
     defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY)
         case PSA_KEY_TYPE_RSA_KEY_PAIR:
@@ -1278,22 +1282,22 @@
              * is not yet implemented.
              * https://github.com/ARMmbed/mbed-crypto/issues/216
              */
-            if( ! psa_key_lifetime_is_external( slot->attr.lifetime ) )
-            {
+            if (!psa_key_lifetime_is_external(slot->attr.lifetime)) {
                 mbedtls_rsa_context *rsa = NULL;
 
                 status = mbedtls_psa_rsa_load_representation(
-                             slot->attr.type,
-                             slot->key.data,
-                             slot->key.bytes,
-                             &rsa );
-                if( status != PSA_SUCCESS )
+                    slot->attr.type,
+                    slot->key.data,
+                    slot->key.bytes,
+                    &rsa);
+                if (status != PSA_SUCCESS) {
                     break;
+                }
 
-                status = psa_get_rsa_public_exponent( rsa,
-                                                      attributes );
-                mbedtls_rsa_free( rsa );
-                mbedtls_free( rsa );
+                status = psa_get_rsa_public_exponent(rsa,
+                                                     attributes);
+                mbedtls_rsa_free(rsa);
+                mbedtls_free(rsa);
             }
             break;
 #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) ||
@@ -1303,72 +1307,70 @@
             break;
     }
 
-    if( status != PSA_SUCCESS )
-        psa_reset_key_attributes( attributes );
+    if (status != PSA_SUCCESS) {
+        psa_reset_key_attributes(attributes);
+    }
 
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
 #if defined(MBEDTLS_PSA_CRYPTO_SE_C)
 psa_status_t psa_get_key_slot_number(
     const psa_key_attributes_t *attributes,
-    psa_key_slot_number_t *slot_number )
+    psa_key_slot_number_t *slot_number)
 {
-    if( attributes->core.flags & MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER )
-    {
+    if (attributes->core.flags & MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER) {
         *slot_number = attributes->slot_number;
-        return( PSA_SUCCESS );
+        return PSA_SUCCESS;
+    } else {
+        return PSA_ERROR_INVALID_ARGUMENT;
     }
-    else
-        return( PSA_ERROR_INVALID_ARGUMENT );
 }
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
 
-static psa_status_t psa_export_key_buffer_internal( const uint8_t *key_buffer,
-                                                    size_t key_buffer_size,
-                                                    uint8_t *data,
-                                                    size_t data_size,
-                                                    size_t *data_length )
+static psa_status_t psa_export_key_buffer_internal(const uint8_t *key_buffer,
+                                                   size_t key_buffer_size,
+                                                   uint8_t *data,
+                                                   size_t data_size,
+                                                   size_t *data_length)
 {
-    if( key_buffer_size > data_size )
-        return( PSA_ERROR_BUFFER_TOO_SMALL );
-    memcpy( data, key_buffer, key_buffer_size );
-    memset( data + key_buffer_size, 0,
-            data_size - key_buffer_size );
+    if (key_buffer_size > data_size) {
+        return PSA_ERROR_BUFFER_TOO_SMALL;
+    }
+    memcpy(data, key_buffer, key_buffer_size);
+    memset(data + key_buffer_size, 0,
+           data_size - key_buffer_size);
     *data_length = key_buffer_size;
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
 psa_status_t psa_export_key_internal(
     const psa_key_attributes_t *attributes,
     const uint8_t *key_buffer, size_t key_buffer_size,
-    uint8_t *data, size_t data_size, size_t *data_length )
+    uint8_t *data, size_t data_size, size_t *data_length)
 {
     psa_key_type_t type = attributes->core.type;
 
-    if( key_type_is_raw_bytes( type ) ||
-        PSA_KEY_TYPE_IS_RSA( type )   ||
-        PSA_KEY_TYPE_IS_ECC( type )      )
-    {
-        return( psa_export_key_buffer_internal(
-                    key_buffer, key_buffer_size,
-                    data, data_size, data_length ) );
-    }
-    else
-    {
+    if (key_type_is_raw_bytes(type) ||
+        PSA_KEY_TYPE_IS_RSA(type)   ||
+        PSA_KEY_TYPE_IS_ECC(type)) {
+        return psa_export_key_buffer_internal(
+            key_buffer, key_buffer_size,
+            data, data_size, data_length);
+    } else {
         /* This shouldn't happen in the reference implementation, but
            it is valid for a special-purpose implementation to omit
            support for exporting certain key types. */
-        return( PSA_ERROR_NOT_SUPPORTED );
+        return PSA_ERROR_NOT_SUPPORTED;
     }
 }
 
-psa_status_t psa_export_key( mbedtls_svc_key_id_t key,
-                             uint8_t *data,
-                             size_t data_size,
-                             size_t *data_length )
+psa_status_t psa_export_key(mbedtls_svc_key_id_t key,
+                            uint8_t *data,
+                            size_t data_size,
+                            size_t *data_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
@@ -1377,8 +1379,9 @@
     /* Reject a zero-length output buffer now, since this can never be a
      * valid key representation. This way we know that data must be a valid
      * pointer and we can do things like memset(data, ..., data_size). */
-    if( data_size == 0 )
-        return( PSA_ERROR_BUFFER_TOO_SMALL );
+    if (data_size == 0) {
+        return PSA_ERROR_BUFFER_TOO_SMALL;
+    }
 
     /* Set the key to empty now, so that even when there are errors, we always
      * set data_length to a value between 0 and data_size. On error, setting
@@ -1390,21 +1393,22 @@
      * which don't require any flag, but
      * psa_get_and_lock_key_slot_with_policy() takes care of this.
      */
-    status = psa_get_and_lock_key_slot_with_policy( key, &slot,
-                                                    PSA_KEY_USAGE_EXPORT, 0 );
-    if( status != PSA_SUCCESS )
-        return( status );
+    status = psa_get_and_lock_key_slot_with_policy(key, &slot,
+                                                   PSA_KEY_USAGE_EXPORT, 0);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
     psa_key_attributes_t attributes = {
         .core = slot->attr
     };
-    status = psa_driver_wrapper_export_key( &attributes,
-                 slot->key.data, slot->key.bytes,
-                 data, data_size, data_length );
+    status = psa_driver_wrapper_export_key(&attributes,
+                                           slot->key.data, slot->key.bytes,
+                                           data, data_size, data_length);
 
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
 psa_status_t psa_export_public_key_internal(
@@ -1413,66 +1417,59 @@
     size_t key_buffer_size,
     uint8_t *data,
     size_t data_size,
-    size_t *data_length )
+    size_t *data_length)
 {
     psa_key_type_t type = attributes->core.type;
 
-    if( PSA_KEY_TYPE_IS_RSA( type ) || PSA_KEY_TYPE_IS_ECC( type ) )
-    {
-        if( PSA_KEY_TYPE_IS_PUBLIC_KEY( type ) )
-        {
+    if (PSA_KEY_TYPE_IS_RSA(type) || PSA_KEY_TYPE_IS_ECC(type)) {
+        if (PSA_KEY_TYPE_IS_PUBLIC_KEY(type)) {
             /* Exporting public -> public */
-            return( psa_export_key_buffer_internal(
-                        key_buffer, key_buffer_size,
-                        data, data_size, data_length ) );
+            return psa_export_key_buffer_internal(
+                key_buffer, key_buffer_size,
+                data, data_size, data_length);
         }
 
-        if( PSA_KEY_TYPE_IS_RSA( type ) )
-        {
+        if (PSA_KEY_TYPE_IS_RSA(type)) {
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) || \
-    defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY)
-            return( mbedtls_psa_rsa_export_public_key( attributes,
-                                                       key_buffer,
-                                                       key_buffer_size,
-                                                       data,
-                                                       data_size,
-                                                       data_length ) );
+            defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY)
+            return mbedtls_psa_rsa_export_public_key(attributes,
+                                                     key_buffer,
+                                                     key_buffer_size,
+                                                     data,
+                                                     data_size,
+                                                     data_length);
 #else
             /* We don't know how to convert a private RSA key to public. */
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
 #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) ||
         * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */
-        }
-        else
-        {
+        } else {
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR) || \
-    defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY)
-            return( mbedtls_psa_ecp_export_public_key( attributes,
-                                                       key_buffer,
-                                                       key_buffer_size,
-                                                       data,
-                                                       data_size,
-                                                       data_length ) );
+            defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY)
+            return mbedtls_psa_ecp_export_public_key(attributes,
+                                                     key_buffer,
+                                                     key_buffer_size,
+                                                     data,
+                                                     data_size,
+                                                     data_length);
 #else
             /* We don't know how to convert a private ECC key to public */
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
 #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR) ||
         * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) */
         }
-    }
-    else
-    {
+    } else {
         /* This shouldn't happen in the reference implementation, but
            it is valid for a special-purpose implementation to omit
            support for exporting certain key types. */
-        return( PSA_ERROR_NOT_SUPPORTED );
+        return PSA_ERROR_NOT_SUPPORTED;
     }
 }
 
-psa_status_t psa_export_public_key( mbedtls_svc_key_id_t key,
-                                    uint8_t *data,
-                                    size_t data_size,
-                                    size_t *data_length )
+psa_status_t psa_export_public_key(mbedtls_svc_key_id_t key,
+                                   uint8_t *data,
+                                   size_t data_size,
+                                   size_t *data_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
@@ -1481,8 +1478,9 @@
     /* Reject a zero-length output buffer now, since this can never be a
      * valid key representation. This way we know that data must be a valid
      * pointer and we can do things like memset(data, ..., data_size). */
-    if( data_size == 0 )
-        return( PSA_ERROR_BUFFER_TOO_SMALL );
+    if (data_size == 0) {
+        return PSA_ERROR_BUFFER_TOO_SMALL;
+    }
 
     /* Set the key to empty now, so that even when there are errors, we always
      * set data_length to a value between 0 and data_size. On error, setting
@@ -1491,14 +1489,14 @@
     *data_length = 0;
 
     /* Exporting a public key doesn't require a usage flag. */
-    status = psa_get_and_lock_key_slot_with_policy( key, &slot, 0, 0 );
-    if( status != PSA_SUCCESS )
-        return( status );
+    status = psa_get_and_lock_key_slot_with_policy(key, &slot, 0, 0);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
-    if( ! PSA_KEY_TYPE_IS_ASYMMETRIC( slot->attr.type ) )
-    {
-         status = PSA_ERROR_INVALID_ARGUMENT;
-         goto exit;
+    if (!PSA_KEY_TYPE_IS_ASYMMETRIC(slot->attr.type)) {
+        status = PSA_ERROR_INVALID_ARGUMENT;
+        goto exit;
     }
 
     psa_key_attributes_t attributes = {
@@ -1506,21 +1504,21 @@
     };
     status = psa_driver_wrapper_export_public_key(
         &attributes, slot->key.data, slot->key.bytes,
-        data, data_size, data_length );
+        data, data_size, data_length);
 
 exit:
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
 #if defined(static_assert)
-static_assert( ( MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY & MBEDTLS_PSA_KA_MASK_DUAL_USE ) == 0,
-               "One or more key attribute flag is listed as both external-only and dual-use" );
-static_assert( ( PSA_KA_MASK_INTERNAL_ONLY & MBEDTLS_PSA_KA_MASK_DUAL_USE ) == 0,
-               "One or more key attribute flag is listed as both internal-only and dual-use" );
-static_assert( ( PSA_KA_MASK_INTERNAL_ONLY & MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY ) == 0,
-               "One or more key attribute flag is listed as both internal-only and external-only" );
+static_assert((MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY & MBEDTLS_PSA_KA_MASK_DUAL_USE) == 0,
+              "One or more key attribute flag is listed as both external-only and dual-use");
+static_assert((PSA_KA_MASK_INTERNAL_ONLY & MBEDTLS_PSA_KA_MASK_DUAL_USE) == 0,
+              "One or more key attribute flag is listed as both internal-only and dual-use");
+static_assert((PSA_KA_MASK_INTERNAL_ONLY & MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY) == 0,
+              "One or more key attribute flag is listed as both internal-only and external-only");
 #endif
 
 /** Validate that a key policy is internally well-formed.
@@ -1529,20 +1527,21 @@
  * consistency of the policy with respect to other attributes of the key
  * such as the key type.
  */
-static psa_status_t psa_validate_key_policy( const psa_key_policy_t *policy )
+static psa_status_t psa_validate_key_policy(const psa_key_policy_t *policy)
 {
-    if( ( policy->usage & ~( PSA_KEY_USAGE_EXPORT |
-                             PSA_KEY_USAGE_COPY |
-                             PSA_KEY_USAGE_ENCRYPT |
-                             PSA_KEY_USAGE_DECRYPT |
-                             PSA_KEY_USAGE_SIGN_MESSAGE |
-                             PSA_KEY_USAGE_VERIFY_MESSAGE |
-                             PSA_KEY_USAGE_SIGN_HASH |
-                             PSA_KEY_USAGE_VERIFY_HASH |
-                             PSA_KEY_USAGE_DERIVE ) ) != 0 )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if ((policy->usage & ~(PSA_KEY_USAGE_EXPORT |
+                           PSA_KEY_USAGE_COPY |
+                           PSA_KEY_USAGE_ENCRYPT |
+                           PSA_KEY_USAGE_DECRYPT |
+                           PSA_KEY_USAGE_SIGN_MESSAGE |
+                           PSA_KEY_USAGE_VERIFY_MESSAGE |
+                           PSA_KEY_USAGE_SIGN_HASH |
+                           PSA_KEY_USAGE_VERIFY_HASH |
+                           PSA_KEY_USAGE_DERIVE)) != 0) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
 /** Validate the internal consistency of key attributes.
@@ -1560,48 +1559,52 @@
  */
 static psa_status_t psa_validate_key_attributes(
     const psa_key_attributes_t *attributes,
-    psa_se_drv_table_entry_t **p_drv )
+    psa_se_drv_table_entry_t **p_drv)
 {
     psa_status_t status = PSA_ERROR_INVALID_ARGUMENT;
-    psa_key_lifetime_t lifetime = psa_get_key_lifetime( attributes );
-    mbedtls_svc_key_id_t key = psa_get_key_id( attributes );
+    psa_key_lifetime_t lifetime = psa_get_key_lifetime(attributes);
+    mbedtls_svc_key_id_t key = psa_get_key_id(attributes);
 
-    status = psa_validate_key_location( lifetime, p_drv );
-    if( status != PSA_SUCCESS )
-        return( status );
-
-    status = psa_validate_key_persistence( lifetime );
-    if( status != PSA_SUCCESS )
-        return( status );
-
-    if ( PSA_KEY_LIFETIME_IS_VOLATILE( lifetime ) )
-    {
-        if( MBEDTLS_SVC_KEY_ID_GET_KEY_ID( key ) != 0 )
-            return( PSA_ERROR_INVALID_ARGUMENT );
-    }
-    else
-    {
-        if( !psa_is_valid_key_id( psa_get_key_id( attributes ), 0 ) )
-            return( PSA_ERROR_INVALID_ARGUMENT );
+    status = psa_validate_key_location(lifetime, p_drv);
+    if (status != PSA_SUCCESS) {
+        return status;
     }
 
-    status = psa_validate_key_policy( &attributes->core.policy );
-    if( status != PSA_SUCCESS )
-        return( status );
+    status = psa_validate_key_persistence(lifetime);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
+
+    if (PSA_KEY_LIFETIME_IS_VOLATILE(lifetime)) {
+        if (MBEDTLS_SVC_KEY_ID_GET_KEY_ID(key) != 0) {
+            return PSA_ERROR_INVALID_ARGUMENT;
+        }
+    } else {
+        if (!psa_is_valid_key_id(psa_get_key_id(attributes), 0)) {
+            return PSA_ERROR_INVALID_ARGUMENT;
+        }
+    }
+
+    status = psa_validate_key_policy(&attributes->core.policy);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
     /* Refuse to create overly large keys.
      * Note that this doesn't trigger on import if the attributes don't
      * explicitly specify a size (so psa_get_key_bits returns 0), so
      * psa_import_key() needs its own checks. */
-    if( psa_get_key_bits( attributes ) > PSA_MAX_KEY_BITS )
-        return( PSA_ERROR_NOT_SUPPORTED );
+    if (psa_get_key_bits(attributes) > PSA_MAX_KEY_BITS) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
 
     /* Reject invalid flags. These should not be reachable through the API. */
-    if( attributes->core.flags & ~ ( MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY |
-                                     MBEDTLS_PSA_KA_MASK_DUAL_USE ) )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (attributes->core.flags & ~(MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY |
+                                   MBEDTLS_PSA_KA_MASK_DUAL_USE)) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
 /** Prepare a key slot to receive key material.
@@ -1637,7 +1640,7 @@
     psa_key_creation_method_t method,
     const psa_key_attributes_t *attributes,
     psa_key_slot_t **p_slot,
-    psa_se_drv_table_entry_t **p_drv )
+    psa_se_drv_table_entry_t **p_drv)
 {
     psa_status_t status;
     psa_key_id_t volatile_key_id;
@@ -1646,13 +1649,15 @@
     (void) method;
     *p_drv = NULL;
 
-    status = psa_validate_key_attributes( attributes, p_drv );
-    if( status != PSA_SUCCESS )
-        return( status );
+    status = psa_validate_key_attributes(attributes, p_drv);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
-    status = psa_get_empty_key_slot( &volatile_key_id, p_slot );
-    if( status != PSA_SUCCESS )
-        return( status );
+    status = psa_get_empty_key_slot(&volatile_key_id, p_slot);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
     slot = *p_slot;
 
     /* We're storing the declared bit-size of the key. It's up to each
@@ -1664,8 +1669,7 @@
      * definition. */
 
     slot->attr = attributes->core;
-    if( PSA_KEY_LIFETIME_IS_VOLATILE( slot->attr.lifetime ) )
-    {
+    if (PSA_KEY_LIFETIME_IS_VOLATILE(slot->attr.lifetime)) {
 #if !defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER)
         slot->attr.id = volatile_key_id;
 #else
@@ -1698,40 +1702,37 @@
      * secure element driver updates its persistent state, but we do not yet
      * save the driver's persistent state, so that if the power fails,
      * we can roll back to a state where the key doesn't exist. */
-    if( *p_drv != NULL )
-    {
+    if (*p_drv != NULL) {
         psa_key_slot_number_t slot_number;
-        status = psa_find_se_slot_for_key( attributes, method, *p_drv,
-                                           &slot_number );
-        if( status != PSA_SUCCESS )
-            return( status );
+        status = psa_find_se_slot_for_key(attributes, method, *p_drv,
+                                          &slot_number);
+        if (status != PSA_SUCCESS) {
+            return status;
+        }
 
-        if( ! PSA_KEY_LIFETIME_IS_VOLATILE( attributes->core.lifetime ) )
-        {
-            psa_crypto_prepare_transaction( PSA_CRYPTO_TRANSACTION_CREATE_KEY );
+        if (!PSA_KEY_LIFETIME_IS_VOLATILE(attributes->core.lifetime)) {
+            psa_crypto_prepare_transaction(PSA_CRYPTO_TRANSACTION_CREATE_KEY);
             psa_crypto_transaction.key.lifetime = slot->attr.lifetime;
             psa_crypto_transaction.key.slot = slot_number;
             psa_crypto_transaction.key.id = slot->attr.id;
-            status = psa_crypto_save_transaction( );
-            if( status != PSA_SUCCESS )
-            {
-                (void) psa_crypto_stop_transaction( );
-                return( status );
+            status = psa_crypto_save_transaction();
+            if (status != PSA_SUCCESS) {
+                (void) psa_crypto_stop_transaction();
+                return status;
             }
         }
 
         status = psa_copy_key_material_into_slot(
-            slot, (uint8_t *)( &slot_number ), sizeof( slot_number ) );
+            slot, (uint8_t *) (&slot_number), sizeof(slot_number));
     }
 
-    if( *p_drv == NULL && method == PSA_KEY_CREATION_REGISTER )
-    {
+    if (*p_drv == NULL && method == PSA_KEY_CREATION_REGISTER) {
         /* Key registration only makes sense with a secure element. */
-        return( PSA_ERROR_INVALID_ARGUMENT );
+        return PSA_ERROR_INVALID_ARGUMENT;
     }
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
 /** Finalize the creation of a key once its key material has been set.
@@ -1774,33 +1775,30 @@
     (void) driver;
 
 #if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C)
-    if( ! PSA_KEY_LIFETIME_IS_VOLATILE( slot->attr.lifetime ) )
-    {
+    if (!PSA_KEY_LIFETIME_IS_VOLATILE(slot->attr.lifetime)) {
 #if defined(MBEDTLS_PSA_CRYPTO_SE_C)
-        if( driver != NULL )
-        {
+        if (driver != NULL) {
             psa_se_key_data_storage_t data;
             psa_key_slot_number_t slot_number =
-                psa_key_slot_get_slot_number( slot ) ;
+                psa_key_slot_get_slot_number(slot);
 
 #if defined(static_assert)
-            static_assert( sizeof( slot_number ) ==
-                           sizeof( data.slot_number ),
-                           "Slot number size does not match psa_se_key_data_storage_t" );
+            static_assert(sizeof(slot_number) ==
+                          sizeof(data.slot_number),
+                          "Slot number size does not match psa_se_key_data_storage_t");
 #endif
-            memcpy( &data.slot_number, &slot_number, sizeof( slot_number ) );
-            status = psa_save_persistent_key( &slot->attr,
-                                              (uint8_t*) &data,
-                                              sizeof( data ) );
-        }
-        else
+            memcpy(&data.slot_number, &slot_number, sizeof(slot_number));
+            status = psa_save_persistent_key(&slot->attr,
+                                             (uint8_t *) &data,
+                                             sizeof(data));
+        } else
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
         {
             /* Key material is saved in export representation in the slot, so
              * just pass the slot buffer for storage. */
-            status = psa_save_persistent_key( &slot->attr,
-                                              slot->key.data,
-                                              slot->key.bytes );
+            status = psa_save_persistent_key(&slot->attr,
+                                             slot->key.data,
+                                             slot->key.bytes);
         }
     }
 #endif /* defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) */
@@ -1811,28 +1809,26 @@
      * by checking whether a transaction is in progress (actual
      * creation of a persistent key in a secure element requires a transaction,
      * but registration or volatile key creation doesn't use one). */
-    if( driver != NULL &&
-        psa_crypto_transaction.unknown.type == PSA_CRYPTO_TRANSACTION_CREATE_KEY )
-    {
-        status = psa_save_se_persistent_data( driver );
-        if( status != PSA_SUCCESS )
-        {
-            psa_destroy_persistent_key( slot->attr.id );
-            return( status );
+    if (driver != NULL &&
+        psa_crypto_transaction.unknown.type == PSA_CRYPTO_TRANSACTION_CREATE_KEY) {
+        status = psa_save_se_persistent_data(driver);
+        if (status != PSA_SUCCESS) {
+            psa_destroy_persistent_key(slot->attr.id);
+            return status;
         }
-        status = psa_crypto_stop_transaction( );
+        status = psa_crypto_stop_transaction();
     }
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
 
-    if( status == PSA_SUCCESS )
-    {
+    if (status == PSA_SUCCESS) {
         *key = slot->attr.id;
-        status = psa_unlock_key_slot( slot );
-        if( status != PSA_SUCCESS )
+        status = psa_unlock_key_slot(slot);
+        if (status != PSA_SUCCESS) {
             *key = MBEDTLS_SVC_KEY_ID_INIT;
+        }
     }
 
-    return( status );
+    return status;
 }
 
 /** Abort the creation of a key.
@@ -1847,13 +1843,14 @@
  * \param[in] driver    The secure element driver for the key,
  *                      or NULL for a transparent key.
  */
-static void psa_fail_key_creation( psa_key_slot_t *slot,
-                                   psa_se_drv_table_entry_t *driver )
+static void psa_fail_key_creation(psa_key_slot_t *slot,
+                                  psa_se_drv_table_entry_t *driver)
 {
     (void) driver;
 
-    if( slot == NULL )
+    if (slot == NULL) {
         return;
+    }
 
 #if defined(MBEDTLS_PSA_CRYPTO_SE_C)
     /* TODO: If the key has already been created in the secure
@@ -1869,10 +1866,10 @@
      * Earlier functions must already have done what it takes to undo any
      * partial creation. All that's left is to update the transaction data
      * itself. */
-    (void) psa_crypto_stop_transaction( );
+    (void) psa_crypto_stop_transaction();
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
 
-    psa_wipe_key_slot( slot );
+    psa_wipe_key_slot(slot);
 }
 
 /** Validate optional attributes during key creation.
@@ -1886,74 +1883,76 @@
  */
 static psa_status_t psa_validate_optional_attributes(
     const psa_key_slot_t *slot,
-    const psa_key_attributes_t *attributes )
+    const psa_key_attributes_t *attributes)
 {
-    if( attributes->core.type != 0 )
-    {
-        if( attributes->core.type != slot->attr.type )
-            return( PSA_ERROR_INVALID_ARGUMENT );
+    if (attributes->core.type != 0) {
+        if (attributes->core.type != slot->attr.type) {
+            return PSA_ERROR_INVALID_ARGUMENT;
+        }
     }
 
-    if( attributes->domain_parameters_size != 0 )
-    {
+    if (attributes->domain_parameters_size != 0) {
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) || \
-    defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY)
-        if( PSA_KEY_TYPE_IS_RSA( slot->attr.type ) )
-        {
+        defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY)
+        if (PSA_KEY_TYPE_IS_RSA(slot->attr.type)) {
             mbedtls_rsa_context *rsa = NULL;
             mbedtls_mpi actual, required;
             int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
             psa_status_t status = mbedtls_psa_rsa_load_representation(
-                                      slot->attr.type,
-                                      slot->key.data,
-                                      slot->key.bytes,
-                                      &rsa );
-            if( status != PSA_SUCCESS )
-                return( status );
+                slot->attr.type,
+                slot->key.data,
+                slot->key.bytes,
+                &rsa);
+            if (status != PSA_SUCCESS) {
+                return status;
+            }
 
-            mbedtls_mpi_init( &actual );
-            mbedtls_mpi_init( &required );
-            ret = mbedtls_rsa_export( rsa,
-                                      NULL, NULL, NULL, NULL, &actual );
-            mbedtls_rsa_free( rsa );
-            mbedtls_free( rsa );
-            if( ret != 0 )
+            mbedtls_mpi_init(&actual);
+            mbedtls_mpi_init(&required);
+            ret = mbedtls_rsa_export(rsa,
+                                     NULL, NULL, NULL, NULL, &actual);
+            mbedtls_rsa_free(rsa);
+            mbedtls_free(rsa);
+            if (ret != 0) {
                 goto rsa_exit;
-            ret = mbedtls_mpi_read_binary( &required,
-                                           attributes->domain_parameters,
-                                           attributes->domain_parameters_size );
-            if( ret != 0 )
+            }
+            ret = mbedtls_mpi_read_binary(&required,
+                                          attributes->domain_parameters,
+                                          attributes->domain_parameters_size);
+            if (ret != 0) {
                 goto rsa_exit;
-            if( mbedtls_mpi_cmp_mpi( &actual, &required ) != 0 )
+            }
+            if (mbedtls_mpi_cmp_mpi(&actual, &required) != 0) {
                 ret = MBEDTLS_ERR_RSA_BAD_INPUT_DATA;
-        rsa_exit:
-            mbedtls_mpi_free( &actual );
-            mbedtls_mpi_free( &required );
-            if( ret != 0)
-                return( mbedtls_to_psa_error( ret ) );
-        }
-        else
+            }
+rsa_exit:
+            mbedtls_mpi_free(&actual);
+            mbedtls_mpi_free(&required);
+            if (ret != 0) {
+                return mbedtls_to_psa_error(ret);
+            }
+        } else
 #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) ||
         * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */
         {
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
         }
     }
 
-    if( attributes->core.bits != 0 )
-    {
-        if( attributes->core.bits != slot->attr.bits )
-            return( PSA_ERROR_INVALID_ARGUMENT );
+    if (attributes->core.bits != 0) {
+        if (attributes->core.bits != slot->attr.bits) {
+            return PSA_ERROR_INVALID_ARGUMENT;
+        }
     }
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
-psa_status_t psa_import_key( const psa_key_attributes_t *attributes,
-                             const uint8_t *data,
-                             size_t data_length,
-                             mbedtls_svc_key_id_t *key )
+psa_status_t psa_import_key(const psa_key_attributes_t *attributes,
+                            const uint8_t *data,
+                            size_t data_length,
+                            mbedtls_svc_key_id_t *key)
 {
     psa_status_t status;
     psa_key_slot_t *slot = NULL;
@@ -1965,57 +1964,61 @@
     /* Reject zero-length symmetric keys (including raw data key objects).
      * This also rejects any key which might be encoded as an empty string,
      * which is never valid. */
-    if( data_length == 0 )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (data_length == 0) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
-    status = psa_start_key_creation( PSA_KEY_CREATION_IMPORT, attributes,
-                                     &slot, &driver );
-    if( status != PSA_SUCCESS )
+    status = psa_start_key_creation(PSA_KEY_CREATION_IMPORT, attributes,
+                                    &slot, &driver);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     /* In the case of a transparent key or an opaque key stored in local
      * storage (thus not in the case of generating a key in a secure element
      * or cryptoprocessor with storage), we have to allocate a buffer to
      * hold the generated key material. */
-    if( slot->key.data == NULL )
-    {
-        status = psa_allocate_buffer_to_slot( slot, data_length );
-        if( status != PSA_SUCCESS )
+    if (slot->key.data == NULL) {
+        status = psa_allocate_buffer_to_slot(slot, data_length);
+        if (status != PSA_SUCCESS) {
             goto exit;
+        }
     }
 
     bits = slot->attr.bits;
-    status = psa_driver_wrapper_import_key( attributes,
-                                            data, data_length,
-                                            slot->key.data,
-                                            slot->key.bytes,
-                                            &slot->key.bytes, &bits );
-    if( status != PSA_SUCCESS )
+    status = psa_driver_wrapper_import_key(attributes,
+                                           data, data_length,
+                                           slot->key.data,
+                                           slot->key.bytes,
+                                           &slot->key.bytes, &bits);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    if( slot->attr.bits == 0 )
+    if (slot->attr.bits == 0) {
         slot->attr.bits = (psa_key_bits_t) bits;
-    else if( bits != slot->attr.bits )
-    {
+    } else if (bits != slot->attr.bits) {
         status = PSA_ERROR_INVALID_ARGUMENT;
         goto exit;
     }
 
-    status = psa_validate_optional_attributes( slot, attributes );
-    if( status != PSA_SUCCESS )
+    status = psa_validate_optional_attributes(slot, attributes);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    status = psa_finish_key_creation( slot, driver, key );
+    status = psa_finish_key_creation(slot, driver, key);
 exit:
-    if( status != PSA_SUCCESS )
-        psa_fail_key_creation( slot, driver );
+    if (status != PSA_SUCCESS) {
+        psa_fail_key_creation(slot, driver);
+    }
 
-    return( status );
+    return status;
 }
 
 #if defined(MBEDTLS_PSA_CRYPTO_SE_C)
 psa_status_t mbedtls_psa_register_se_key(
-    const psa_key_attributes_t *attributes )
+    const psa_key_attributes_t *attributes)
 {
     psa_status_t status;
     psa_key_slot_t *slot = NULL;
@@ -2026,46 +2029,51 @@
      * It could make sense to query the key type and size from the
      * secure element, but not all secure elements support this
      * and the driver HAL doesn't currently support it. */
-    if( psa_get_key_type( attributes ) == PSA_KEY_TYPE_NONE )
-        return( PSA_ERROR_NOT_SUPPORTED );
-    if( psa_get_key_bits( attributes ) == 0 )
-        return( PSA_ERROR_NOT_SUPPORTED );
+    if (psa_get_key_type(attributes) == PSA_KEY_TYPE_NONE) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
+    if (psa_get_key_bits(attributes) == 0) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
 
-    status = psa_start_key_creation( PSA_KEY_CREATION_REGISTER, attributes,
-                                     &slot, &driver );
-    if( status != PSA_SUCCESS )
+    status = psa_start_key_creation(PSA_KEY_CREATION_REGISTER, attributes,
+                                    &slot, &driver);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    status = psa_finish_key_creation( slot, driver, &key );
+    status = psa_finish_key_creation(slot, driver, &key);
 
 exit:
-    if( status != PSA_SUCCESS )
-        psa_fail_key_creation( slot, driver );
+    if (status != PSA_SUCCESS) {
+        psa_fail_key_creation(slot, driver);
+    }
 
     /* Registration doesn't keep the key in RAM. */
-    psa_close_key( key );
-    return( status );
+    psa_close_key(key);
+    return status;
 }
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
 
-static psa_status_t psa_copy_key_material( const psa_key_slot_t *source,
-                                           psa_key_slot_t *target )
+static psa_status_t psa_copy_key_material(const psa_key_slot_t *source,
+                                          psa_key_slot_t *target)
 {
-    psa_status_t status = psa_copy_key_material_into_slot( target,
-                                                           source->key.data,
-                                                           source->key.bytes );
-    if( status != PSA_SUCCESS )
-        return( status );
+    psa_status_t status = psa_copy_key_material_into_slot(target,
+                                                          source->key.data,
+                                                          source->key.bytes);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
     target->attr.type = source->attr.type;
     target->attr.bits = source->attr.bits;
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
-psa_status_t psa_copy_key( mbedtls_svc_key_id_t source_key,
-                           const psa_key_attributes_t *specified_attributes,
-                           mbedtls_svc_key_id_t *target_key )
+psa_status_t psa_copy_key(mbedtls_svc_key_id_t source_key,
+                          const psa_key_attributes_t *specified_attributes,
+                          mbedtls_svc_key_id_t *target_key)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
@@ -2077,37 +2085,39 @@
     *target_key = MBEDTLS_SVC_KEY_ID_INIT;
 
     status = psa_get_and_lock_transparent_key_slot_with_policy(
-                 source_key, &source_slot, PSA_KEY_USAGE_COPY, 0 );
-    if( status != PSA_SUCCESS )
+        source_key, &source_slot, PSA_KEY_USAGE_COPY, 0);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    status = psa_validate_optional_attributes( source_slot,
-                                               specified_attributes );
-    if( status != PSA_SUCCESS )
+    status = psa_validate_optional_attributes(source_slot,
+                                              specified_attributes);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    status = psa_restrict_key_policy( source_slot->attr.type,
-                                      &actual_attributes.core.policy,
-                                      &source_slot->attr.policy );
-    if( status != PSA_SUCCESS )
+    status = psa_restrict_key_policy(source_slot->attr.type,
+                                     &actual_attributes.core.policy,
+                                     &source_slot->attr.policy);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    status = psa_start_key_creation( PSA_KEY_CREATION_COPY, &actual_attributes,
-                                     &target_slot, &driver );
-    if( status != PSA_SUCCESS )
+    status = psa_start_key_creation(PSA_KEY_CREATION_COPY, &actual_attributes,
+                                    &target_slot, &driver);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
 #if defined(MBEDTLS_PSA_CRYPTO_SE_C)
-    if( driver != NULL )
-    {
+    if (driver != NULL) {
         /* Copying to a secure element is not implemented yet. */
         status = PSA_ERROR_NOT_SUPPORTED;
         goto exit;
     }
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
 
-    if( psa_key_lifetime_is_external( actual_attributes.core.lifetime ) )
-    {
+    if (psa_key_lifetime_is_external(actual_attributes.core.lifetime)) {
         /*
          * Copying through an opaque driver is not implemented yet, consider
          * a lifetime with an external location as an invalid parameter for
@@ -2117,18 +2127,20 @@
         goto exit;
     }
 
-    status = psa_copy_key_material( source_slot, target_slot );
-    if( status != PSA_SUCCESS )
+    status = psa_copy_key_material(source_slot, target_slot);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    status = psa_finish_key_creation( target_slot, driver, target_key );
+    status = psa_finish_key_creation(target_slot, driver, target_key);
 exit:
-    if( status != PSA_SUCCESS )
-        psa_fail_key_creation( target_slot, driver );
+    if (status != PSA_SUCCESS) {
+        psa_fail_key_creation(target_slot, driver);
+    }
 
-    unlock_status = psa_unlock_key_slot( source_slot );
+    unlock_status = psa_unlock_key_slot(source_slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
 
@@ -2137,178 +2149,185 @@
 /* Message digests */
 /****************************************************************/
 
-psa_status_t psa_hash_abort( psa_hash_operation_t *operation )
+psa_status_t psa_hash_abort(psa_hash_operation_t *operation)
 {
     /* Aborting a non-active operation is allowed */
-    if( operation->id == 0 )
-        return( PSA_SUCCESS );
+    if (operation->id == 0) {
+        return PSA_SUCCESS;
+    }
 
-    psa_status_t status = psa_driver_wrapper_hash_abort( operation );
+    psa_status_t status = psa_driver_wrapper_hash_abort(operation);
     operation->id = 0;
 
-    return( status );
+    return status;
 }
 
-psa_status_t psa_hash_setup( psa_hash_operation_t *operation,
-                             psa_algorithm_t alg )
+psa_status_t psa_hash_setup(psa_hash_operation_t *operation,
+                            psa_algorithm_t alg)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
     /* A context must be freshly initialized before it can be set up. */
-    if( operation->id != 0 )
-    {
+    if (operation->id != 0) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    if( !PSA_ALG_IS_HASH( alg ) )
-    {
+    if (!PSA_ALG_IS_HASH(alg)) {
         status = PSA_ERROR_INVALID_ARGUMENT;
         goto exit;
     }
 
     /* Ensure all of the context is zeroized, since PSA_HASH_OPERATION_INIT only
      * directly zeroes the int-sized dummy member of the context union. */
-    memset( &operation->ctx, 0, sizeof( operation->ctx ) );
+    memset(&operation->ctx, 0, sizeof(operation->ctx));
 
-    status = psa_driver_wrapper_hash_setup( operation, alg );
+    status = psa_driver_wrapper_hash_setup(operation, alg);
 
 exit:
-    if( status != PSA_SUCCESS )
-        psa_hash_abort( operation );
+    if (status != PSA_SUCCESS) {
+        psa_hash_abort(operation);
+    }
 
     return status;
 }
 
-psa_status_t psa_hash_update( psa_hash_operation_t *operation,
-                              const uint8_t *input,
-                              size_t input_length )
+psa_status_t psa_hash_update(psa_hash_operation_t *operation,
+                             const uint8_t *input,
+                             size_t input_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
-    if( operation->id == 0 )
-    {
+    if (operation->id == 0) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
     /* Don't require hash implementations to behave correctly on a
      * zero-length input, which may have an invalid pointer. */
-    if( input_length == 0 )
-        return( PSA_SUCCESS );
+    if (input_length == 0) {
+        return PSA_SUCCESS;
+    }
 
-    status = psa_driver_wrapper_hash_update( operation, input, input_length );
+    status = psa_driver_wrapper_hash_update(operation, input, input_length);
 
 exit:
-    if( status != PSA_SUCCESS )
-        psa_hash_abort( operation );
+    if (status != PSA_SUCCESS) {
+        psa_hash_abort(operation);
+    }
 
-    return( status );
+    return status;
 }
 
-psa_status_t psa_hash_finish( psa_hash_operation_t *operation,
-                              uint8_t *hash,
-                              size_t hash_size,
-                              size_t *hash_length )
+psa_status_t psa_hash_finish(psa_hash_operation_t *operation,
+                             uint8_t *hash,
+                             size_t hash_size,
+                             size_t *hash_length)
 {
     *hash_length = 0;
-    if( operation->id == 0 )
-        return( PSA_ERROR_BAD_STATE );
+    if (operation->id == 0) {
+        return PSA_ERROR_BAD_STATE;
+    }
 
     psa_status_t status = psa_driver_wrapper_hash_finish(
-                            operation, hash, hash_size, hash_length );
-    psa_hash_abort( operation );
-    return( status );
+        operation, hash, hash_size, hash_length);
+    psa_hash_abort(operation);
+    return status;
 }
 
-psa_status_t psa_hash_verify( psa_hash_operation_t *operation,
-                              const uint8_t *hash,
-                              size_t hash_length )
+psa_status_t psa_hash_verify(psa_hash_operation_t *operation,
+                             const uint8_t *hash,
+                             size_t hash_length)
 {
     uint8_t actual_hash[PSA_HASH_MAX_SIZE];
     size_t actual_hash_length;
     psa_status_t status = psa_hash_finish(
-                            operation,
-                            actual_hash, sizeof( actual_hash ),
-                            &actual_hash_length );
+        operation,
+        actual_hash, sizeof(actual_hash),
+        &actual_hash_length);
 
-    if( status != PSA_SUCCESS )
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    if( actual_hash_length != hash_length )
-    {
+    if (actual_hash_length != hash_length) {
         status = PSA_ERROR_INVALID_SIGNATURE;
         goto exit;
     }
 
-    if( mbedtls_psa_safer_memcmp( hash, actual_hash, actual_hash_length ) != 0 )
+    if (mbedtls_psa_safer_memcmp(hash, actual_hash, actual_hash_length) != 0) {
         status = PSA_ERROR_INVALID_SIGNATURE;
+    }
 
 exit:
-    mbedtls_platform_zeroize( actual_hash, sizeof( actual_hash ) );
-    if( status != PSA_SUCCESS )
+    mbedtls_platform_zeroize(actual_hash, sizeof(actual_hash));
+    if (status != PSA_SUCCESS) {
         psa_hash_abort(operation);
+    }
 
-    return( status );
+    return status;
 }
 
-psa_status_t psa_hash_compute( psa_algorithm_t alg,
-                               const uint8_t *input, size_t input_length,
-                               uint8_t *hash, size_t hash_size,
-                               size_t *hash_length )
+psa_status_t psa_hash_compute(psa_algorithm_t alg,
+                              const uint8_t *input, size_t input_length,
+                              uint8_t *hash, size_t hash_size,
+                              size_t *hash_length)
 {
     *hash_length = 0;
-    if( !PSA_ALG_IS_HASH( alg ) )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (!PSA_ALG_IS_HASH(alg)) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
-    return( psa_driver_wrapper_hash_compute( alg, input, input_length,
-                                             hash, hash_size, hash_length ) );
+    return psa_driver_wrapper_hash_compute(alg, input, input_length,
+                                           hash, hash_size, hash_length);
 }
 
-psa_status_t psa_hash_compare( psa_algorithm_t alg,
-                               const uint8_t *input, size_t input_length,
-                               const uint8_t *hash, size_t hash_length )
+psa_status_t psa_hash_compare(psa_algorithm_t alg,
+                              const uint8_t *input, size_t input_length,
+                              const uint8_t *hash, size_t hash_length)
 {
     uint8_t actual_hash[PSA_HASH_MAX_SIZE];
     size_t actual_hash_length;
 
-    if( !PSA_ALG_IS_HASH( alg ) )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (!PSA_ALG_IS_HASH(alg)) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
     psa_status_t status = psa_driver_wrapper_hash_compute(
-                            alg, input, input_length,
-                            actual_hash, sizeof(actual_hash),
-                            &actual_hash_length );
-    if( status != PSA_SUCCESS )
+        alg, input, input_length,
+        actual_hash, sizeof(actual_hash),
+        &actual_hash_length);
+    if (status != PSA_SUCCESS) {
         goto exit;
-    if( actual_hash_length != hash_length )
-    {
+    }
+    if (actual_hash_length != hash_length) {
         status = PSA_ERROR_INVALID_SIGNATURE;
         goto exit;
     }
-    if( mbedtls_psa_safer_memcmp( hash, actual_hash, actual_hash_length ) != 0 )
+    if (mbedtls_psa_safer_memcmp(hash, actual_hash, actual_hash_length) != 0) {
         status = PSA_ERROR_INVALID_SIGNATURE;
+    }
 
 exit:
-    mbedtls_platform_zeroize( actual_hash, sizeof( actual_hash ) );
-    return( status );
+    mbedtls_platform_zeroize(actual_hash, sizeof(actual_hash));
+    return status;
 }
 
-psa_status_t psa_hash_clone( const psa_hash_operation_t *source_operation,
-                             psa_hash_operation_t *target_operation )
+psa_status_t psa_hash_clone(const psa_hash_operation_t *source_operation,
+                            psa_hash_operation_t *target_operation)
 {
-    if( source_operation->id == 0 ||
-        target_operation->id != 0 )
-    {
-        return( PSA_ERROR_BAD_STATE );
+    if (source_operation->id == 0 ||
+        target_operation->id != 0) {
+        return PSA_ERROR_BAD_STATE;
     }
 
-    psa_status_t status = psa_driver_wrapper_hash_clone( source_operation,
-                                                         target_operation );
-    if( status != PSA_SUCCESS )
-        psa_hash_abort( target_operation );
+    psa_status_t status = psa_driver_wrapper_hash_clone(source_operation,
+                                                        target_operation);
+    if (status != PSA_SUCCESS) {
+        psa_hash_abort(target_operation);
+    }
 
-    return( status );
+    return status;
 }
 
 
@@ -2316,59 +2335,59 @@
 /* MAC */
 /****************************************************************/
 
-psa_status_t psa_mac_abort( psa_mac_operation_t *operation )
+psa_status_t psa_mac_abort(psa_mac_operation_t *operation)
 {
     /* Aborting a non-active operation is allowed */
-    if( operation->id == 0 )
-        return( PSA_SUCCESS );
+    if (operation->id == 0) {
+        return PSA_SUCCESS;
+    }
 
-    psa_status_t status = psa_driver_wrapper_mac_abort( operation );
+    psa_status_t status = psa_driver_wrapper_mac_abort(operation);
     operation->mac_size = 0;
     operation->is_sign = 0;
     operation->id = 0;
 
-    return( status );
+    return status;
 }
 
 static psa_status_t psa_mac_finalize_alg_and_key_validation(
     psa_algorithm_t alg,
     const psa_key_attributes_t *attributes,
-    uint8_t *mac_size )
+    uint8_t *mac_size)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
-    psa_key_type_t key_type = psa_get_key_type( attributes );
-    size_t key_bits = psa_get_key_bits( attributes );
+    psa_key_type_t key_type = psa_get_key_type(attributes);
+    size_t key_bits = psa_get_key_bits(attributes);
 
-    if( ! PSA_ALG_IS_MAC( alg ) )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (!PSA_ALG_IS_MAC(alg)) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
     /* Validate the combination of key type and algorithm */
-    status = psa_mac_key_can_do( alg, key_type );
-    if( status != PSA_SUCCESS )
-        return( status );
+    status = psa_mac_key_can_do(alg, key_type);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
     /* Get the output length for the algorithm and key combination */
-    *mac_size = PSA_MAC_LENGTH( key_type, key_bits, alg );
+    *mac_size = PSA_MAC_LENGTH(key_type, key_bits, alg);
 
-    if( *mac_size < 4 )
-    {
+    if (*mac_size < 4) {
         /* A very short MAC is too short for security since it can be
          * brute-forced. Ancient protocols with 32-bit MACs do exist,
          * so we make this our minimum, even though 32 bits is still
          * too small for security. */
-        return( PSA_ERROR_NOT_SUPPORTED );
+        return PSA_ERROR_NOT_SUPPORTED;
     }
 
-    if( *mac_size > PSA_MAC_LENGTH( key_type, key_bits,
-                                    PSA_ALG_FULL_LENGTH_MAC( alg ) ) )
-    {
+    if (*mac_size > PSA_MAC_LENGTH(key_type, key_bits,
+                                   PSA_ALG_FULL_LENGTH_MAC(alg))) {
         /* It's impossible to "truncate" to a larger length than the full length
          * of the algorithm. */
-        return( PSA_ERROR_INVALID_ARGUMENT );
+        return PSA_ERROR_INVALID_ARGUMENT;
     }
 
-    if( *mac_size > PSA_MAC_MAX_SIZE )
-    {
+    if (*mac_size > PSA_MAC_MAX_SIZE) {
         /* PSA_MAC_LENGTH returns the correct length even for a MAC algorithm
          * that is disabled in the compile-time configuration. The result can
          * therefore be larger than PSA_MAC_MAX_SIZE, which does take the
@@ -2378,144 +2397,142 @@
          * PSA_ERROR_BUFFER_TOO_SMALL for an unsupported algorithm whose MAC size
          * is larger than PSA_MAC_MAX_SIZE, which is misleading and which breaks
          * systematically generated tests. */
-        return( PSA_ERROR_NOT_SUPPORTED );
+        return PSA_ERROR_NOT_SUPPORTED;
     }
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
-static psa_status_t psa_mac_setup( psa_mac_operation_t *operation,
-                                   mbedtls_svc_key_id_t key,
-                                   psa_algorithm_t alg,
-                                   int is_sign )
+static psa_status_t psa_mac_setup(psa_mac_operation_t *operation,
+                                  mbedtls_svc_key_id_t key,
+                                  psa_algorithm_t alg,
+                                  int is_sign)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot = NULL;
 
     /* A context must be freshly initialized before it can be set up. */
-    if( operation->id != 0 )
-    {
+    if (operation->id != 0) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
     status = psa_get_and_lock_key_slot_with_policy(
-                 key,
-                 &slot,
-                 is_sign ? PSA_KEY_USAGE_SIGN_MESSAGE : PSA_KEY_USAGE_VERIFY_MESSAGE,
-                 alg );
-    if( status != PSA_SUCCESS )
+        key,
+        &slot,
+        is_sign ? PSA_KEY_USAGE_SIGN_MESSAGE : PSA_KEY_USAGE_VERIFY_MESSAGE,
+        alg);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     psa_key_attributes_t attributes = {
         .core = slot->attr
     };
 
-    status = psa_mac_finalize_alg_and_key_validation( alg, &attributes,
-                                                      &operation->mac_size );
-    if( status != PSA_SUCCESS )
+    status = psa_mac_finalize_alg_and_key_validation(alg, &attributes,
+                                                     &operation->mac_size);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     operation->is_sign = is_sign;
     /* Dispatch the MAC setup call with validated input */
-    if( is_sign )
-    {
-        status = psa_driver_wrapper_mac_sign_setup( operation,
-                                                    &attributes,
-                                                    slot->key.data,
-                                                    slot->key.bytes,
-                                                    alg );
-    }
-    else
-    {
-        status = psa_driver_wrapper_mac_verify_setup( operation,
-                                                      &attributes,
-                                                      slot->key.data,
-                                                      slot->key.bytes,
-                                                      alg );
+    if (is_sign) {
+        status = psa_driver_wrapper_mac_sign_setup(operation,
+                                                   &attributes,
+                                                   slot->key.data,
+                                                   slot->key.bytes,
+                                                   alg);
+    } else {
+        status = psa_driver_wrapper_mac_verify_setup(operation,
+                                                     &attributes,
+                                                     slot->key.data,
+                                                     slot->key.bytes,
+                                                     alg);
     }
 
 exit:
-    if( status != PSA_SUCCESS )
-        psa_mac_abort( operation );
+    if (status != PSA_SUCCESS) {
+        psa_mac_abort(operation);
+    }
 
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
-psa_status_t psa_mac_sign_setup( psa_mac_operation_t *operation,
-                                 mbedtls_svc_key_id_t key,
-                                 psa_algorithm_t alg )
+psa_status_t psa_mac_sign_setup(psa_mac_operation_t *operation,
+                                mbedtls_svc_key_id_t key,
+                                psa_algorithm_t alg)
 {
-    return( psa_mac_setup( operation, key, alg, 1 ) );
+    return psa_mac_setup(operation, key, alg, 1);
 }
 
-psa_status_t psa_mac_verify_setup( psa_mac_operation_t *operation,
-                                   mbedtls_svc_key_id_t key,
-                                   psa_algorithm_t alg )
+psa_status_t psa_mac_verify_setup(psa_mac_operation_t *operation,
+                                  mbedtls_svc_key_id_t key,
+                                  psa_algorithm_t alg)
 {
-    return( psa_mac_setup( operation, key, alg, 0 ) );
+    return psa_mac_setup(operation, key, alg, 0);
 }
 
-psa_status_t psa_mac_update( psa_mac_operation_t *operation,
-                             const uint8_t *input,
-                             size_t input_length )
+psa_status_t psa_mac_update(psa_mac_operation_t *operation,
+                            const uint8_t *input,
+                            size_t input_length)
 {
-    if( operation->id == 0 )
-        return( PSA_ERROR_BAD_STATE );
+    if (operation->id == 0) {
+        return PSA_ERROR_BAD_STATE;
+    }
 
     /* Don't require hash implementations to behave correctly on a
      * zero-length input, which may have an invalid pointer. */
-    if( input_length == 0 )
-        return( PSA_SUCCESS );
+    if (input_length == 0) {
+        return PSA_SUCCESS;
+    }
 
-    psa_status_t status = psa_driver_wrapper_mac_update( operation,
-                                                         input, input_length );
-    if( status != PSA_SUCCESS )
-        psa_mac_abort( operation );
+    psa_status_t status = psa_driver_wrapper_mac_update(operation,
+                                                        input, input_length);
+    if (status != PSA_SUCCESS) {
+        psa_mac_abort(operation);
+    }
 
-    return( status );
+    return status;
 }
 
-psa_status_t psa_mac_sign_finish( psa_mac_operation_t *operation,
-                                  uint8_t *mac,
-                                  size_t mac_size,
-                                  size_t *mac_length )
+psa_status_t psa_mac_sign_finish(psa_mac_operation_t *operation,
+                                 uint8_t *mac,
+                                 size_t mac_size,
+                                 size_t *mac_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t abort_status = PSA_ERROR_CORRUPTION_DETECTED;
 
-    if( operation->id == 0 )
-    {
+    if (operation->id == 0) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    if( ! operation->is_sign )
-    {
+    if (!operation->is_sign) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
     /* Sanity check. This will guarantee that mac_size != 0 (and so mac != NULL)
      * once all the error checks are done. */
-    if( operation->mac_size == 0 )
-    {
+    if (operation->mac_size == 0) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    if( mac_size < operation->mac_size )
-    {
+    if (mac_size < operation->mac_size) {
         status = PSA_ERROR_BUFFER_TOO_SMALL;
         goto exit;
     }
 
-    status = psa_driver_wrapper_mac_sign_finish( operation,
-                                                 mac, operation->mac_size,
-                                                 mac_length );
+    status = psa_driver_wrapper_mac_sign_finish(operation,
+                                                mac, operation->mac_size,
+                                                mac_length);
 
 exit:
     /* In case of success, set the potential excess room in the output buffer
@@ -2524,63 +2541,60 @@
      * such that in case the caller misses an error check, the output would be
      * an unachievable MAC.
      */
-    if( status != PSA_SUCCESS )
-    {
+    if (status != PSA_SUCCESS) {
         *mac_length = mac_size;
         operation->mac_size = 0;
     }
 
-    if( mac_size > operation->mac_size )
-        memset( &mac[operation->mac_size], '!',
-                mac_size - operation->mac_size );
+    if (mac_size > operation->mac_size) {
+        memset(&mac[operation->mac_size], '!',
+               mac_size - operation->mac_size);
+    }
 
-    abort_status = psa_mac_abort( operation );
+    abort_status = psa_mac_abort(operation);
 
-    return( status == PSA_SUCCESS ? abort_status : status );
+    return status == PSA_SUCCESS ? abort_status : status;
 }
 
-psa_status_t psa_mac_verify_finish( psa_mac_operation_t *operation,
-                                    const uint8_t *mac,
-                                    size_t mac_length )
+psa_status_t psa_mac_verify_finish(psa_mac_operation_t *operation,
+                                   const uint8_t *mac,
+                                   size_t mac_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t abort_status = PSA_ERROR_CORRUPTION_DETECTED;
 
-    if( operation->id == 0 )
-    {
+    if (operation->id == 0) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    if( operation->is_sign )
-    {
+    if (operation->is_sign) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    if( operation->mac_size != mac_length )
-    {
+    if (operation->mac_size != mac_length) {
         status = PSA_ERROR_INVALID_SIGNATURE;
         goto exit;
     }
 
-    status = psa_driver_wrapper_mac_verify_finish( operation,
-                                                   mac, mac_length );
+    status = psa_driver_wrapper_mac_verify_finish(operation,
+                                                  mac, mac_length);
 
 exit:
-    abort_status = psa_mac_abort( operation );
+    abort_status = psa_mac_abort(operation);
 
-    return( status == PSA_SUCCESS ? abort_status : status );
+    return status == PSA_SUCCESS ? abort_status : status;
 }
 
-static psa_status_t psa_mac_compute_internal( mbedtls_svc_key_id_t key,
-                                              psa_algorithm_t alg,
-                                              const uint8_t *input,
-                                              size_t input_length,
-                                              uint8_t *mac,
-                                              size_t mac_size,
-                                              size_t *mac_length,
-                                              int is_sign )
+static psa_status_t psa_mac_compute_internal(mbedtls_svc_key_id_t key,
+                                             psa_algorithm_t alg,
+                                             const uint8_t *input,
+                                             size_t input_length,
+                                             uint8_t *mac,
+                                             size_t mac_size,
+                                             size_t *mac_length,
+                                             int is_sign)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
@@ -2588,34 +2602,35 @@
     uint8_t operation_mac_size = 0;
 
     status = psa_get_and_lock_key_slot_with_policy(
-                 key,
-                 &slot,
-                 is_sign ? PSA_KEY_USAGE_SIGN_MESSAGE : PSA_KEY_USAGE_VERIFY_MESSAGE,
-                 alg );
-    if( status != PSA_SUCCESS )
+        key,
+        &slot,
+        is_sign ? PSA_KEY_USAGE_SIGN_MESSAGE : PSA_KEY_USAGE_VERIFY_MESSAGE,
+        alg);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     psa_key_attributes_t attributes = {
         .core = slot->attr
     };
 
-    status = psa_mac_finalize_alg_and_key_validation( alg, &attributes,
-                                                      &operation_mac_size );
-    if( status != PSA_SUCCESS )
+    status = psa_mac_finalize_alg_and_key_validation(alg, &attributes,
+                                                     &operation_mac_size);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    if( mac_size < operation_mac_size )
-    {
+    if (mac_size < operation_mac_size) {
         status = PSA_ERROR_BUFFER_TOO_SMALL;
         goto exit;
     }
 
     status = psa_driver_wrapper_mac_compute(
-                 &attributes,
-                 slot->key.data, slot->key.bytes,
-                 alg,
-                 input, input_length,
-                 mac, operation_mac_size, mac_length );
+        &attributes,
+        slot->key.data, slot->key.bytes,
+        alg,
+        input, input_length,
+        mac, operation_mac_size, mac_length);
 
 exit:
     /* In case of success, set the potential excess room in the output buffer
@@ -2624,102 +2639,100 @@
      * such that in case the caller misses an error check, the output would be
      * an unachievable MAC.
      */
-    if( status != PSA_SUCCESS )
-    {
+    if (status != PSA_SUCCESS) {
         *mac_length = mac_size;
         operation_mac_size = 0;
     }
-    if( mac_size > operation_mac_size )
-        memset( &mac[operation_mac_size], '!', mac_size - operation_mac_size );
+    if (mac_size > operation_mac_size) {
+        memset(&mac[operation_mac_size], '!', mac_size - operation_mac_size);
+    }
 
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
-psa_status_t psa_mac_compute( mbedtls_svc_key_id_t key,
-                              psa_algorithm_t alg,
-                              const uint8_t *input,
-                              size_t input_length,
-                              uint8_t *mac,
-                              size_t mac_size,
-                              size_t *mac_length)
-{
-    return( psa_mac_compute_internal( key, alg,
-                                      input, input_length,
-                                      mac, mac_size, mac_length, 1 ) );
-}
-
-psa_status_t psa_mac_verify( mbedtls_svc_key_id_t key,
+psa_status_t psa_mac_compute(mbedtls_svc_key_id_t key,
                              psa_algorithm_t alg,
                              const uint8_t *input,
                              size_t input_length,
-                             const uint8_t *mac,
-                             size_t mac_length)
+                             uint8_t *mac,
+                             size_t mac_size,
+                             size_t *mac_length)
+{
+    return psa_mac_compute_internal(key, alg,
+                                    input, input_length,
+                                    mac, mac_size, mac_length, 1);
+}
+
+psa_status_t psa_mac_verify(mbedtls_svc_key_id_t key,
+                            psa_algorithm_t alg,
+                            const uint8_t *input,
+                            size_t input_length,
+                            const uint8_t *mac,
+                            size_t mac_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     uint8_t actual_mac[PSA_MAC_MAX_SIZE];
     size_t actual_mac_length;
 
-    status = psa_mac_compute_internal( key, alg,
-                                       input, input_length,
-                                       actual_mac, sizeof( actual_mac ),
-                                       &actual_mac_length, 0 );
-    if( status != PSA_SUCCESS )
+    status = psa_mac_compute_internal(key, alg,
+                                      input, input_length,
+                                      actual_mac, sizeof(actual_mac),
+                                      &actual_mac_length, 0);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    if( mac_length != actual_mac_length )
-    {
+    if (mac_length != actual_mac_length) {
         status = PSA_ERROR_INVALID_SIGNATURE;
         goto exit;
     }
-    if( mbedtls_psa_safer_memcmp( mac, actual_mac, actual_mac_length ) != 0 )
-    {
+    if (mbedtls_psa_safer_memcmp(mac, actual_mac, actual_mac_length) != 0) {
         status = PSA_ERROR_INVALID_SIGNATURE;
         goto exit;
     }
 
 exit:
-    mbedtls_platform_zeroize( actual_mac, sizeof( actual_mac ) );
+    mbedtls_platform_zeroize(actual_mac, sizeof(actual_mac));
 
-    return ( status );
+    return status;
 }
 
 /****************************************************************/
 /* Asymmetric cryptography */
 /****************************************************************/
 
-static psa_status_t psa_sign_verify_check_alg( int input_is_message,
-                                               psa_algorithm_t alg )
+static psa_status_t psa_sign_verify_check_alg(int input_is_message,
+                                              psa_algorithm_t alg)
 {
-    if( input_is_message )
-    {
-        if( ! PSA_ALG_IS_SIGN_MESSAGE( alg ) )
-            return( PSA_ERROR_INVALID_ARGUMENT );
+    if (input_is_message) {
+        if (!PSA_ALG_IS_SIGN_MESSAGE(alg)) {
+            return PSA_ERROR_INVALID_ARGUMENT;
+        }
 
-        if ( PSA_ALG_IS_SIGN_HASH( alg ) )
-        {
-            if( ! PSA_ALG_IS_HASH( PSA_ALG_SIGN_GET_HASH( alg ) ) )
-                return( PSA_ERROR_INVALID_ARGUMENT );
+        if (PSA_ALG_IS_SIGN_HASH(alg)) {
+            if (!PSA_ALG_IS_HASH(PSA_ALG_SIGN_GET_HASH(alg))) {
+                return PSA_ERROR_INVALID_ARGUMENT;
+            }
+        }
+    } else {
+        if (!PSA_ALG_IS_SIGN_HASH(alg)) {
+            return PSA_ERROR_INVALID_ARGUMENT;
         }
     }
-    else
-    {
-        if( ! PSA_ALG_IS_SIGN_HASH( alg ) )
-            return( PSA_ERROR_INVALID_ARGUMENT );
-    }
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
-static psa_status_t psa_sign_internal( mbedtls_svc_key_id_t key,
-                                       int input_is_message,
-                                       psa_algorithm_t alg,
-                                       const uint8_t * input,
-                                       size_t input_length,
-                                       uint8_t * signature,
-                                       size_t signature_size,
-                                       size_t * signature_length )
+static psa_status_t psa_sign_internal(mbedtls_svc_key_id_t key,
+                                      int input_is_message,
+                                      psa_algorithm_t alg,
+                                      const uint8_t *input,
+                                      size_t input_length,
+                                      uint8_t *signature,
+                                      size_t signature_size,
+                                      size_t *signature_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
@@ -2727,50 +2740,49 @@
 
     *signature_length = 0;
 
-    status = psa_sign_verify_check_alg( input_is_message, alg );
-    if( status != PSA_SUCCESS )
+    status = psa_sign_verify_check_alg(input_is_message, alg);
+    if (status != PSA_SUCCESS) {
         return status;
+    }
 
     /* Immediately reject a zero-length signature buffer. This guarantees
      * that signature must be a valid pointer. (On the other hand, the input
      * buffer can in principle be empty since it doesn't actually have
      * to be a hash.) */
-    if( signature_size == 0 )
-        return( PSA_ERROR_BUFFER_TOO_SMALL );
+    if (signature_size == 0) {
+        return PSA_ERROR_BUFFER_TOO_SMALL;
+    }
 
     status = psa_get_and_lock_key_slot_with_policy(
-                key, &slot,
-                input_is_message ? PSA_KEY_USAGE_SIGN_MESSAGE :
-                                   PSA_KEY_USAGE_SIGN_HASH,
-                alg );
+        key, &slot,
+        input_is_message ? PSA_KEY_USAGE_SIGN_MESSAGE :
+        PSA_KEY_USAGE_SIGN_HASH,
+        alg);
 
-    if( status != PSA_SUCCESS )
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    if( ! PSA_KEY_TYPE_IS_KEY_PAIR( slot->attr.type ) )
-    {
+    if (!PSA_KEY_TYPE_IS_KEY_PAIR(slot->attr.type)) {
         status = PSA_ERROR_INVALID_ARGUMENT;
         goto exit;
     }
 
     psa_key_attributes_t attributes = {
-      .core = slot->attr
+        .core = slot->attr
     };
 
-    if( input_is_message )
-    {
+    if (input_is_message) {
         status = psa_driver_wrapper_sign_message(
             &attributes, slot->key.data, slot->key.bytes,
             alg, input, input_length,
-            signature, signature_size, signature_length );
-    }
-    else
-    {
+            signature, signature_size, signature_length);
+    } else {
 
         status = psa_driver_wrapper_sign_hash(
             &attributes, slot->key.data, slot->key.bytes,
             alg, input, input_length,
-            signature, signature_size, signature_length );
+            signature, signature_size, signature_length);
     }
 
 
@@ -2779,66 +2791,66 @@
      * the trailing part on success) with something that isn't a valid signature
      * (barring an attack on the signature and deliberately-crafted input),
      * in case the caller doesn't check the return status properly. */
-    if( status == PSA_SUCCESS )
-        memset( signature + *signature_length, '!',
-                signature_size - *signature_length );
-    else
-        memset( signature, '!', signature_size );
+    if (status == PSA_SUCCESS) {
+        memset(signature + *signature_length, '!',
+               signature_size - *signature_length);
+    } else {
+        memset(signature, '!', signature_size);
+    }
     /* If signature_size is 0 then we have nothing to do. We must not call
      * memset because signature may be NULL in this case. */
 
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
-static psa_status_t psa_verify_internal( mbedtls_svc_key_id_t key,
-                                         int input_is_message,
-                                         psa_algorithm_t alg,
-                                         const uint8_t * input,
-                                         size_t input_length,
-                                         const uint8_t * signature,
-                                         size_t signature_length )
+static psa_status_t psa_verify_internal(mbedtls_svc_key_id_t key,
+                                        int input_is_message,
+                                        psa_algorithm_t alg,
+                                        const uint8_t *input,
+                                        size_t input_length,
+                                        const uint8_t *signature,
+                                        size_t signature_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
 
-    status = psa_sign_verify_check_alg( input_is_message, alg );
-    if( status != PSA_SUCCESS )
+    status = psa_sign_verify_check_alg(input_is_message, alg);
+    if (status != PSA_SUCCESS) {
         return status;
+    }
 
     status = psa_get_and_lock_key_slot_with_policy(
-                key, &slot,
-                input_is_message ? PSA_KEY_USAGE_VERIFY_MESSAGE :
-                                   PSA_KEY_USAGE_VERIFY_HASH,
-                alg );
+        key, &slot,
+        input_is_message ? PSA_KEY_USAGE_VERIFY_MESSAGE :
+        PSA_KEY_USAGE_VERIFY_HASH,
+        alg);
 
-    if( status != PSA_SUCCESS )
-        return( status );
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
     psa_key_attributes_t attributes = {
-      .core = slot->attr
+        .core = slot->attr
     };
 
-    if( input_is_message )
-    {
+    if (input_is_message) {
         status = psa_driver_wrapper_verify_message(
             &attributes, slot->key.data, slot->key.bytes,
             alg, input, input_length,
-            signature, signature_length );
-    }
-    else
-    {
+            signature, signature_length);
+    } else {
         status = psa_driver_wrapper_verify_hash(
             &attributes, slot->key.data, slot->key.bytes,
             alg, input, input_length,
-            signature, signature_length );
+            signature, signature_length);
     }
 
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 
 }
 
@@ -2851,43 +2863,43 @@
     size_t input_length,
     uint8_t *signature,
     size_t signature_size,
-    size_t *signature_length )
+    size_t *signature_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
-    if ( PSA_ALG_IS_SIGN_HASH( alg ) )
-    {
+    if (PSA_ALG_IS_SIGN_HASH(alg)) {
         size_t hash_length;
         uint8_t hash[PSA_HASH_MAX_SIZE];
 
         status = psa_driver_wrapper_hash_compute(
-                    PSA_ALG_SIGN_GET_HASH( alg ),
-                    input, input_length,
-                    hash, sizeof( hash ), &hash_length );
+            PSA_ALG_SIGN_GET_HASH(alg),
+            input, input_length,
+            hash, sizeof(hash), &hash_length);
 
-        if( status != PSA_SUCCESS )
+        if (status != PSA_SUCCESS) {
             return status;
+        }
 
         return psa_driver_wrapper_sign_hash(
-                    attributes, key_buffer, key_buffer_size,
-                    alg, hash, hash_length,
-                    signature, signature_size, signature_length );
+            attributes, key_buffer, key_buffer_size,
+            alg, hash, hash_length,
+            signature, signature_size, signature_length);
     }
 
-    return( PSA_ERROR_NOT_SUPPORTED );
+    return PSA_ERROR_NOT_SUPPORTED;
 }
 
-psa_status_t psa_sign_message( mbedtls_svc_key_id_t key,
-                               psa_algorithm_t alg,
-                               const uint8_t * input,
-                               size_t input_length,
-                               uint8_t * signature,
-                               size_t signature_size,
-                               size_t * signature_length )
+psa_status_t psa_sign_message(mbedtls_svc_key_id_t key,
+                              psa_algorithm_t alg,
+                              const uint8_t *input,
+                              size_t input_length,
+                              uint8_t *signature,
+                              size_t signature_size,
+                              size_t *signature_length)
 {
     return psa_sign_internal(
         key, 1, alg, input, input_length,
-        signature, signature_size, signature_length );
+        signature, signature_size, signature_length);
 }
 
 psa_status_t psa_verify_message_builtin(
@@ -2898,202 +2910,184 @@
     const uint8_t *input,
     size_t input_length,
     const uint8_t *signature,
-    size_t signature_length )
+    size_t signature_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
-    if ( PSA_ALG_IS_SIGN_HASH( alg ) )
-    {
+    if (PSA_ALG_IS_SIGN_HASH(alg)) {
         size_t hash_length;
         uint8_t hash[PSA_HASH_MAX_SIZE];
 
         status = psa_driver_wrapper_hash_compute(
-                    PSA_ALG_SIGN_GET_HASH( alg ),
-                    input, input_length,
-                    hash, sizeof( hash ), &hash_length );
+            PSA_ALG_SIGN_GET_HASH(alg),
+            input, input_length,
+            hash, sizeof(hash), &hash_length);
 
-        if( status != PSA_SUCCESS )
+        if (status != PSA_SUCCESS) {
             return status;
+        }
 
         return psa_driver_wrapper_verify_hash(
-                    attributes, key_buffer, key_buffer_size,
-                    alg, hash, hash_length,
-                    signature, signature_length );
+            attributes, key_buffer, key_buffer_size,
+            alg, hash, hash_length,
+            signature, signature_length);
     }
 
-    return( PSA_ERROR_NOT_SUPPORTED );
+    return PSA_ERROR_NOT_SUPPORTED;
 }
 
-psa_status_t psa_verify_message( mbedtls_svc_key_id_t key,
-                                 psa_algorithm_t alg,
-                                 const uint8_t * input,
-                                 size_t input_length,
-                                 const uint8_t * signature,
-                                 size_t signature_length )
+psa_status_t psa_verify_message(mbedtls_svc_key_id_t key,
+                                psa_algorithm_t alg,
+                                const uint8_t *input,
+                                size_t input_length,
+                                const uint8_t *signature,
+                                size_t signature_length)
 {
     return psa_verify_internal(
         key, 1, alg, input, input_length,
-        signature, signature_length );
+        signature, signature_length);
 }
 
 psa_status_t psa_sign_hash_builtin(
     const psa_key_attributes_t *attributes,
     const uint8_t *key_buffer, size_t key_buffer_size,
     psa_algorithm_t alg, const uint8_t *hash, size_t hash_length,
-    uint8_t *signature, size_t signature_size, size_t *signature_length )
+    uint8_t *signature, size_t signature_size, size_t *signature_length)
 {
-    if( attributes->core.type == PSA_KEY_TYPE_RSA_KEY_PAIR )
-    {
-        if( PSA_ALG_IS_RSA_PKCS1V15_SIGN( alg ) ||
-            PSA_ALG_IS_RSA_PSS( alg) )
-        {
+    if (attributes->core.type == PSA_KEY_TYPE_RSA_KEY_PAIR) {
+        if (PSA_ALG_IS_RSA_PKCS1V15_SIGN(alg) ||
+            PSA_ALG_IS_RSA_PSS(alg)) {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || \
-    defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS)
-            return( mbedtls_psa_rsa_sign_hash(
-                        attributes,
-                        key_buffer, key_buffer_size,
-                        alg, hash, hash_length,
-                        signature, signature_size, signature_length ) );
+            defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS)
+            return mbedtls_psa_rsa_sign_hash(
+                attributes,
+                key_buffer, key_buffer_size,
+                alg, hash, hash_length,
+                signature, signature_size, signature_length);
 #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) ||
         * defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS) */
+        } else {
+            return PSA_ERROR_INVALID_ARGUMENT;
         }
-        else
-        {
-            return( PSA_ERROR_INVALID_ARGUMENT );
-        }
-    }
-    else if( PSA_KEY_TYPE_IS_ECC( attributes->core.type ) )
-    {
-        if( PSA_ALG_IS_ECDSA( alg ) )
-        {
+    } else if (PSA_KEY_TYPE_IS_ECC(attributes->core.type)) {
+        if (PSA_ALG_IS_ECDSA(alg)) {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \
-    defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)
-            return( mbedtls_psa_ecdsa_sign_hash(
-                        attributes,
-                        key_buffer, key_buffer_size,
-                        alg, hash, hash_length,
-                        signature, signature_size, signature_length ) );
+            defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)
+            return mbedtls_psa_ecdsa_sign_hash(
+                attributes,
+                key_buffer, key_buffer_size,
+                alg, hash, hash_length,
+                signature, signature_size, signature_length);
 #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) ||
         * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) */
-        }
-        else
-        {
-            return( PSA_ERROR_INVALID_ARGUMENT );
+        } else {
+            return PSA_ERROR_INVALID_ARGUMENT;
         }
     }
 
-    (void)key_buffer;
-    (void)key_buffer_size;
-    (void)hash;
-    (void)hash_length;
-    (void)signature;
-    (void)signature_size;
-    (void)signature_length;
+    (void) key_buffer;
+    (void) key_buffer_size;
+    (void) hash;
+    (void) hash_length;
+    (void) signature;
+    (void) signature_size;
+    (void) signature_length;
 
-    return( PSA_ERROR_NOT_SUPPORTED );
+    return PSA_ERROR_NOT_SUPPORTED;
 }
 
-psa_status_t psa_sign_hash( mbedtls_svc_key_id_t key,
-                            psa_algorithm_t alg,
-                            const uint8_t *hash,
-                            size_t hash_length,
-                            uint8_t *signature,
-                            size_t signature_size,
-                            size_t *signature_length )
+psa_status_t psa_sign_hash(mbedtls_svc_key_id_t key,
+                           psa_algorithm_t alg,
+                           const uint8_t *hash,
+                           size_t hash_length,
+                           uint8_t *signature,
+                           size_t signature_size,
+                           size_t *signature_length)
 {
     return psa_sign_internal(
         key, 0, alg, hash, hash_length,
-        signature, signature_size, signature_length );
+        signature, signature_size, signature_length);
 }
 
 psa_status_t psa_verify_hash_builtin(
     const psa_key_attributes_t *attributes,
     const uint8_t *key_buffer, size_t key_buffer_size,
     psa_algorithm_t alg, const uint8_t *hash, size_t hash_length,
-    const uint8_t *signature, size_t signature_length )
+    const uint8_t *signature, size_t signature_length)
 {
-    if( PSA_KEY_TYPE_IS_RSA( attributes->core.type ) )
-    {
-        if( PSA_ALG_IS_RSA_PKCS1V15_SIGN( alg ) ||
-            PSA_ALG_IS_RSA_PSS( alg) )
-        {
+    if (PSA_KEY_TYPE_IS_RSA(attributes->core.type)) {
+        if (PSA_ALG_IS_RSA_PKCS1V15_SIGN(alg) ||
+            PSA_ALG_IS_RSA_PSS(alg)) {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || \
-    defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS)
-            return( mbedtls_psa_rsa_verify_hash(
-                        attributes,
-                        key_buffer, key_buffer_size,
-                        alg, hash, hash_length,
-                        signature, signature_length ) );
+            defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS)
+            return mbedtls_psa_rsa_verify_hash(
+                attributes,
+                key_buffer, key_buffer_size,
+                alg, hash, hash_length,
+                signature, signature_length);
 #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) ||
         * defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS) */
+        } else {
+            return PSA_ERROR_INVALID_ARGUMENT;
         }
-        else
-        {
-            return( PSA_ERROR_INVALID_ARGUMENT );
-        }
-    }
-    else if( PSA_KEY_TYPE_IS_ECC( attributes->core.type ) )
-    {
-        if( PSA_ALG_IS_ECDSA( alg ) )
-        {
+    } else if (PSA_KEY_TYPE_IS_ECC(attributes->core.type)) {
+        if (PSA_ALG_IS_ECDSA(alg)) {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \
-    defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)
-            return( mbedtls_psa_ecdsa_verify_hash(
-                        attributes,
-                        key_buffer, key_buffer_size,
-                        alg, hash, hash_length,
-                        signature, signature_length ) );
+            defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)
+            return mbedtls_psa_ecdsa_verify_hash(
+                attributes,
+                key_buffer, key_buffer_size,
+                alg, hash, hash_length,
+                signature, signature_length);
 #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) ||
         * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) */
-        }
-        else
-        {
-            return( PSA_ERROR_INVALID_ARGUMENT );
+        } else {
+            return PSA_ERROR_INVALID_ARGUMENT;
         }
     }
 
-    (void)key_buffer;
-    (void)key_buffer_size;
-    (void)hash;
-    (void)hash_length;
-    (void)signature;
-    (void)signature_length;
+    (void) key_buffer;
+    (void) key_buffer_size;
+    (void) hash;
+    (void) hash_length;
+    (void) signature;
+    (void) signature_length;
 
-    return( PSA_ERROR_NOT_SUPPORTED );
+    return PSA_ERROR_NOT_SUPPORTED;
 }
 
-psa_status_t psa_verify_hash( mbedtls_svc_key_id_t key,
-                              psa_algorithm_t alg,
-                              const uint8_t *hash,
-                              size_t hash_length,
-                              const uint8_t *signature,
-                              size_t signature_length )
+psa_status_t psa_verify_hash(mbedtls_svc_key_id_t key,
+                             psa_algorithm_t alg,
+                             const uint8_t *hash,
+                             size_t hash_length,
+                             const uint8_t *signature,
+                             size_t signature_length)
 {
     return psa_verify_internal(
         key, 0, alg, hash, hash_length,
-        signature, signature_length );
+        signature, signature_length);
 }
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
-static void psa_rsa_oaep_set_padding_mode( psa_algorithm_t alg,
-                                           mbedtls_rsa_context *rsa )
+static void psa_rsa_oaep_set_padding_mode(psa_algorithm_t alg,
+                                          mbedtls_rsa_context *rsa)
 {
-    psa_algorithm_t hash_alg = PSA_ALG_RSA_OAEP_GET_HASH( alg );
-    const mbedtls_md_info_t *md_info = mbedtls_md_info_from_psa( hash_alg );
-    mbedtls_md_type_t md_alg = mbedtls_md_get_type( md_info );
-    mbedtls_rsa_set_padding( rsa, MBEDTLS_RSA_PKCS_V21, md_alg );
+    psa_algorithm_t hash_alg = PSA_ALG_RSA_OAEP_GET_HASH(alg);
+    const mbedtls_md_info_t *md_info = mbedtls_md_info_from_psa(hash_alg);
+    mbedtls_md_type_t md_alg = mbedtls_md_get_type(md_info);
+    mbedtls_rsa_set_padding(rsa, MBEDTLS_RSA_PKCS_V21, md_alg);
 }
 #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP) */
 
-psa_status_t psa_asymmetric_encrypt( mbedtls_svc_key_id_t key,
-                                     psa_algorithm_t alg,
-                                     const uint8_t *input,
-                                     size_t input_length,
-                                     const uint8_t *salt,
-                                     size_t salt_length,
-                                     uint8_t *output,
-                                     size_t output_size,
-                                     size_t *output_length )
+psa_status_t psa_asymmetric_encrypt(mbedtls_svc_key_id_t key,
+                                    psa_algorithm_t alg,
+                                    const uint8_t *input,
+                                    size_t input_length,
+                                    const uint8_t *salt,
+                                    size_t salt_length,
+                                    uint8_t *output,
+                                    size_t output_size,
+                                    size_t *output_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
@@ -3107,107 +3101,101 @@
 
     *output_length = 0;
 
-    if( ! PSA_ALG_IS_RSA_OAEP( alg ) && salt_length != 0 )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (!PSA_ALG_IS_RSA_OAEP(alg) && salt_length != 0) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
     status = psa_get_and_lock_transparent_key_slot_with_policy(
-                 key, &slot, PSA_KEY_USAGE_ENCRYPT, alg );
-    if( status != PSA_SUCCESS )
-        return( status );
-    if( ! ( PSA_KEY_TYPE_IS_PUBLIC_KEY( slot->attr.type ) ||
-            PSA_KEY_TYPE_IS_KEY_PAIR( slot->attr.type ) ) )
-    {
+        key, &slot, PSA_KEY_USAGE_ENCRYPT, alg);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
+    if (!(PSA_KEY_TYPE_IS_PUBLIC_KEY(slot->attr.type) ||
+          PSA_KEY_TYPE_IS_KEY_PAIR(slot->attr.type))) {
         status = PSA_ERROR_INVALID_ARGUMENT;
         goto exit;
     }
 
-    if( PSA_KEY_TYPE_IS_RSA( slot->attr.type ) )
-    {
+    if (PSA_KEY_TYPE_IS_RSA(slot->attr.type)) {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) || \
-    defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
+        defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
         mbedtls_rsa_context *rsa = NULL;
-        status = mbedtls_psa_rsa_load_representation( slot->attr.type,
-                                                      slot->key.data,
-                                                      slot->key.bytes,
-                                                      &rsa );
-        if( status != PSA_SUCCESS )
+        status = mbedtls_psa_rsa_load_representation(slot->attr.type,
+                                                     slot->key.data,
+                                                     slot->key.bytes,
+                                                     &rsa);
+        if (status != PSA_SUCCESS) {
             goto rsa_exit;
+        }
 
-        if( output_size < mbedtls_rsa_get_len( rsa ) )
-        {
+        if (output_size < mbedtls_rsa_get_len(rsa)) {
             status = PSA_ERROR_BUFFER_TOO_SMALL;
             goto rsa_exit;
         }
 #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) ||
         * defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP) */
-        if( alg == PSA_ALG_RSA_PKCS1V15_CRYPT )
-        {
+        if (alg == PSA_ALG_RSA_PKCS1V15_CRYPT) {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT)
             status = mbedtls_to_psa_error(
-                    mbedtls_rsa_pkcs1_encrypt( rsa,
-                                               mbedtls_psa_get_random,
-                                               MBEDTLS_PSA_RANDOM_STATE,
-                                               MBEDTLS_RSA_PUBLIC,
-                                               input_length,
-                                               input,
-                                               output ) );
+                mbedtls_rsa_pkcs1_encrypt(rsa,
+                                          mbedtls_psa_get_random,
+                                          MBEDTLS_PSA_RANDOM_STATE,
+                                          MBEDTLS_RSA_PUBLIC,
+                                          input_length,
+                                          input,
+                                          output));
 #else
             status = PSA_ERROR_NOT_SUPPORTED;
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT */
-        }
-        else
-        if( PSA_ALG_IS_RSA_OAEP( alg ) )
-        {
+        } else
+        if (PSA_ALG_IS_RSA_OAEP(alg)) {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
-            psa_rsa_oaep_set_padding_mode( alg, rsa );
+            psa_rsa_oaep_set_padding_mode(alg, rsa);
             status = mbedtls_to_psa_error(
-                mbedtls_rsa_rsaes_oaep_encrypt( rsa,
-                                                mbedtls_psa_get_random,
-                                                MBEDTLS_PSA_RANDOM_STATE,
-                                                MBEDTLS_RSA_PUBLIC,
-                                                salt, salt_length,
-                                                input_length,
-                                                input,
-                                                output ) );
+                mbedtls_rsa_rsaes_oaep_encrypt(rsa,
+                                               mbedtls_psa_get_random,
+                                               MBEDTLS_PSA_RANDOM_STATE,
+                                               MBEDTLS_RSA_PUBLIC,
+                                               salt, salt_length,
+                                               input_length,
+                                               input,
+                                               output));
 #else
             status = PSA_ERROR_NOT_SUPPORTED;
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP */
-        }
-        else
-        {
+        } else {
             status = PSA_ERROR_INVALID_ARGUMENT;
         }
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) || \
-    defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
+        defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
 rsa_exit:
-        if( status == PSA_SUCCESS )
-            *output_length = mbedtls_rsa_get_len( rsa );
+        if (status == PSA_SUCCESS) {
+            *output_length = mbedtls_rsa_get_len(rsa);
+        }
 
-        mbedtls_rsa_free( rsa );
-        mbedtls_free( rsa );
+        mbedtls_rsa_free(rsa);
+        mbedtls_free(rsa);
 #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) ||
         * defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP) */
-    }
-    else
-    {
+    } else {
         status = PSA_ERROR_NOT_SUPPORTED;
     }
 
 exit:
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
-psa_status_t psa_asymmetric_decrypt( mbedtls_svc_key_id_t key,
-                                     psa_algorithm_t alg,
-                                     const uint8_t *input,
-                                     size_t input_length,
-                                     const uint8_t *salt,
-                                     size_t salt_length,
-                                     uint8_t *output,
-                                     size_t output_size,
-                                     size_t *output_length )
+psa_status_t psa_asymmetric_decrypt(mbedtls_svc_key_id_t key,
+                                    psa_algorithm_t alg,
+                                    const uint8_t *input,
+                                    size_t input_length,
+                                    const uint8_t *salt,
+                                    size_t salt_length,
+                                    uint8_t *output,
+                                    size_t output_size,
+                                    size_t *output_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
@@ -3221,96 +3209,89 @@
 
     *output_length = 0;
 
-    if( ! PSA_ALG_IS_RSA_OAEP( alg ) && salt_length != 0 )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (!PSA_ALG_IS_RSA_OAEP(alg) && salt_length != 0) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
     status = psa_get_and_lock_transparent_key_slot_with_policy(
-                 key, &slot, PSA_KEY_USAGE_DECRYPT, alg );
-    if( status != PSA_SUCCESS )
-        return( status );
-    if( ! PSA_KEY_TYPE_IS_KEY_PAIR( slot->attr.type ) )
-    {
+        key, &slot, PSA_KEY_USAGE_DECRYPT, alg);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
+    if (!PSA_KEY_TYPE_IS_KEY_PAIR(slot->attr.type)) {
         status = PSA_ERROR_INVALID_ARGUMENT;
         goto exit;
     }
 
-    if( slot->attr.type == PSA_KEY_TYPE_RSA_KEY_PAIR )
-    {
+    if (slot->attr.type == PSA_KEY_TYPE_RSA_KEY_PAIR) {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) || \
-    defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
+        defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
         mbedtls_rsa_context *rsa = NULL;
-        status = mbedtls_psa_rsa_load_representation( slot->attr.type,
-                                                      slot->key.data,
-                                                      slot->key.bytes,
-                                                      &rsa );
-        if( status != PSA_SUCCESS )
+        status = mbedtls_psa_rsa_load_representation(slot->attr.type,
+                                                     slot->key.data,
+                                                     slot->key.bytes,
+                                                     &rsa);
+        if (status != PSA_SUCCESS) {
             goto exit;
+        }
 
-        if( input_length != mbedtls_rsa_get_len( rsa ) )
-        {
+        if (input_length != mbedtls_rsa_get_len(rsa)) {
             status = PSA_ERROR_INVALID_ARGUMENT;
             goto rsa_exit;
         }
 #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) ||
         * defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP) */
 
-        if( alg == PSA_ALG_RSA_PKCS1V15_CRYPT )
-        {
+        if (alg == PSA_ALG_RSA_PKCS1V15_CRYPT) {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT)
             status = mbedtls_to_psa_error(
-                mbedtls_rsa_pkcs1_decrypt( rsa,
-                                           mbedtls_psa_get_random,
-                                           MBEDTLS_PSA_RANDOM_STATE,
-                                           MBEDTLS_RSA_PRIVATE,
-                                           output_length,
-                                           input,
-                                           output,
-                                           output_size ) );
+                mbedtls_rsa_pkcs1_decrypt(rsa,
+                                          mbedtls_psa_get_random,
+                                          MBEDTLS_PSA_RANDOM_STATE,
+                                          MBEDTLS_RSA_PRIVATE,
+                                          output_length,
+                                          input,
+                                          output,
+                                          output_size));
 #else
             status = PSA_ERROR_NOT_SUPPORTED;
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT */
-        }
-        else
-        if( PSA_ALG_IS_RSA_OAEP( alg ) )
-        {
+        } else
+        if (PSA_ALG_IS_RSA_OAEP(alg)) {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
-            psa_rsa_oaep_set_padding_mode( alg, rsa );
+            psa_rsa_oaep_set_padding_mode(alg, rsa);
             status = mbedtls_to_psa_error(
-                mbedtls_rsa_rsaes_oaep_decrypt( rsa,
-                                                mbedtls_psa_get_random,
-                                                MBEDTLS_PSA_RANDOM_STATE,
-                                                MBEDTLS_RSA_PRIVATE,
-                                                salt, salt_length,
-                                                output_length,
-                                                input,
-                                                output,
-                                                output_size ) );
+                mbedtls_rsa_rsaes_oaep_decrypt(rsa,
+                                               mbedtls_psa_get_random,
+                                               MBEDTLS_PSA_RANDOM_STATE,
+                                               MBEDTLS_RSA_PRIVATE,
+                                               salt, salt_length,
+                                               output_length,
+                                               input,
+                                               output,
+                                               output_size));
 #else
             status = PSA_ERROR_NOT_SUPPORTED;
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP */
-        }
-        else
-        {
+        } else {
             status = PSA_ERROR_INVALID_ARGUMENT;
         }
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) || \
-    defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
+        defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP)
 rsa_exit:
-        mbedtls_rsa_free( rsa );
-        mbedtls_free( rsa );
+        mbedtls_rsa_free(rsa);
+        mbedtls_free(rsa);
 #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_CRYPT) ||
         * defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_OAEP) */
-    }
-    else
-    {
+    } else {
         status = PSA_ERROR_NOT_SUPPORTED;
     }
 
 exit:
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
 
@@ -3319,279 +3300,268 @@
 /* Symmetric cryptography */
 /****************************************************************/
 
-static psa_status_t psa_cipher_setup( psa_cipher_operation_t *operation,
-                                      mbedtls_svc_key_id_t key,
-                                      psa_algorithm_t alg,
-                                      mbedtls_operation_t cipher_operation )
+static psa_status_t psa_cipher_setup(psa_cipher_operation_t *operation,
+                                     mbedtls_svc_key_id_t key,
+                                     psa_algorithm_t alg,
+                                     mbedtls_operation_t cipher_operation)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot = NULL;
-    psa_key_usage_t usage = ( cipher_operation == MBEDTLS_ENCRYPT ?
-                              PSA_KEY_USAGE_ENCRYPT :
-                              PSA_KEY_USAGE_DECRYPT );
+    psa_key_usage_t usage = (cipher_operation == MBEDTLS_ENCRYPT ?
+                             PSA_KEY_USAGE_ENCRYPT :
+                             PSA_KEY_USAGE_DECRYPT);
 
     /* A context must be freshly initialized before it can be set up. */
-    if( operation->id != 0 )
-    {
+    if (operation->id != 0) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    if( ! PSA_ALG_IS_CIPHER( alg ) )
-    {
+    if (!PSA_ALG_IS_CIPHER(alg)) {
         status = PSA_ERROR_INVALID_ARGUMENT;
         goto exit;
     }
 
-    status = psa_get_and_lock_key_slot_with_policy( key, &slot, usage, alg );
-    if( status != PSA_SUCCESS )
+    status = psa_get_and_lock_key_slot_with_policy(key, &slot, usage, alg);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     /* Initialize the operation struct members, except for id. The id member
      * is used to indicate to psa_cipher_abort that there are resources to free,
      * so we only set it (in the driver wrapper) after resources have been
      * allocated/initialized. */
     operation->iv_set = 0;
-    if( alg == PSA_ALG_ECB_NO_PADDING )
+    if (alg == PSA_ALG_ECB_NO_PADDING) {
         operation->iv_required = 0;
-    else if( slot->attr.type == PSA_KEY_TYPE_ARC4 )
+    } else if (slot->attr.type == PSA_KEY_TYPE_ARC4) {
         operation->iv_required = 0;
-    else
+    } else {
         operation->iv_required = 1;
-    operation->default_iv_length = PSA_CIPHER_IV_LENGTH( slot->attr.type, alg );
+    }
+    operation->default_iv_length = PSA_CIPHER_IV_LENGTH(slot->attr.type, alg);
 
     psa_key_attributes_t attributes = {
-      .core = slot->attr
+        .core = slot->attr
     };
 
     /* Try doing the operation through a driver before using software fallback. */
-    if( cipher_operation == MBEDTLS_ENCRYPT )
-        status = psa_driver_wrapper_cipher_encrypt_setup( operation,
-                                                          &attributes,
-                                                          slot->key.data,
-                                                          slot->key.bytes,
-                                                          alg );
-    else
-        status = psa_driver_wrapper_cipher_decrypt_setup( operation,
-                                                          &attributes,
-                                                          slot->key.data,
-                                                          slot->key.bytes,
-                                                          alg );
+    if (cipher_operation == MBEDTLS_ENCRYPT) {
+        status = psa_driver_wrapper_cipher_encrypt_setup(operation,
+                                                         &attributes,
+                                                         slot->key.data,
+                                                         slot->key.bytes,
+                                                         alg);
+    } else {
+        status = psa_driver_wrapper_cipher_decrypt_setup(operation,
+                                                         &attributes,
+                                                         slot->key.data,
+                                                         slot->key.bytes,
+                                                         alg);
+    }
 
 exit:
-    if( status != PSA_SUCCESS )
-        psa_cipher_abort( operation );
+    if (status != PSA_SUCCESS) {
+        psa_cipher_abort(operation);
+    }
 
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
-psa_status_t psa_cipher_encrypt_setup( psa_cipher_operation_t *operation,
-                                       mbedtls_svc_key_id_t key,
-                                       psa_algorithm_t alg )
+psa_status_t psa_cipher_encrypt_setup(psa_cipher_operation_t *operation,
+                                      mbedtls_svc_key_id_t key,
+                                      psa_algorithm_t alg)
 {
-    return( psa_cipher_setup( operation, key, alg, MBEDTLS_ENCRYPT ) );
+    return psa_cipher_setup(operation, key, alg, MBEDTLS_ENCRYPT);
 }
 
-psa_status_t psa_cipher_decrypt_setup( psa_cipher_operation_t *operation,
-                                       mbedtls_svc_key_id_t key,
-                                       psa_algorithm_t alg )
+psa_status_t psa_cipher_decrypt_setup(psa_cipher_operation_t *operation,
+                                      mbedtls_svc_key_id_t key,
+                                      psa_algorithm_t alg)
 {
-    return( psa_cipher_setup( operation, key, alg, MBEDTLS_DECRYPT ) );
+    return psa_cipher_setup(operation, key, alg, MBEDTLS_DECRYPT);
 }
 
-psa_status_t psa_cipher_generate_iv( psa_cipher_operation_t *operation,
-                                     uint8_t *iv,
-                                     size_t iv_size,
-                                     size_t *iv_length )
+psa_status_t psa_cipher_generate_iv(psa_cipher_operation_t *operation,
+                                    uint8_t *iv,
+                                    size_t iv_size,
+                                    size_t *iv_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     uint8_t local_iv[PSA_CIPHER_IV_MAX_SIZE];
     size_t default_iv_length;
 
-    if( operation->id == 0 )
-    {
+    if (operation->id == 0) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    if( operation->iv_set || ! operation->iv_required )
-    {
+    if (operation->iv_set || !operation->iv_required) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
     default_iv_length = operation->default_iv_length;
-    if( iv_size < default_iv_length )
-    {
+    if (iv_size < default_iv_length) {
         status = PSA_ERROR_BUFFER_TOO_SMALL;
         goto exit;
     }
 
-    if( default_iv_length > PSA_CIPHER_IV_MAX_SIZE )
-    {
+    if (default_iv_length > PSA_CIPHER_IV_MAX_SIZE) {
         status = PSA_ERROR_GENERIC_ERROR;
         goto exit;
     }
 
-    status = psa_generate_random( local_iv, default_iv_length );
-    if( status != PSA_SUCCESS )
+    status = psa_generate_random(local_iv, default_iv_length);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
-    status = psa_driver_wrapper_cipher_set_iv( operation,
-                                               local_iv, default_iv_length );
+    status = psa_driver_wrapper_cipher_set_iv(operation,
+                                              local_iv, default_iv_length);
 
 exit:
-    if( status == PSA_SUCCESS )
-    {
-        memcpy( iv, local_iv, default_iv_length );
+    if (status == PSA_SUCCESS) {
+        memcpy(iv, local_iv, default_iv_length);
         *iv_length = default_iv_length;
         operation->iv_set = 1;
-    }
-    else
-    {
+    } else {
         *iv_length = 0;
-        psa_cipher_abort( operation );
+        psa_cipher_abort(operation);
     }
 
-    return( status );
+    return status;
 }
 
-psa_status_t psa_cipher_set_iv( psa_cipher_operation_t *operation,
-                                const uint8_t *iv,
-                                size_t iv_length )
+psa_status_t psa_cipher_set_iv(psa_cipher_operation_t *operation,
+                               const uint8_t *iv,
+                               size_t iv_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
-    if( operation->id == 0 )
-    {
+    if (operation->id == 0) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    if( operation->iv_set || ! operation->iv_required )
-    {
+    if (operation->iv_set || !operation->iv_required) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    if( iv_length > PSA_CIPHER_IV_MAX_SIZE )
-    {
+    if (iv_length > PSA_CIPHER_IV_MAX_SIZE) {
         status = PSA_ERROR_INVALID_ARGUMENT;
         goto exit;
     }
 
-    status = psa_driver_wrapper_cipher_set_iv( operation,
-                                               iv,
-                                               iv_length );
+    status = psa_driver_wrapper_cipher_set_iv(operation,
+                                              iv,
+                                              iv_length);
 
 exit:
-    if( status == PSA_SUCCESS )
+    if (status == PSA_SUCCESS) {
         operation->iv_set = 1;
-    else
-        psa_cipher_abort( operation );
-    return( status );
+    } else {
+        psa_cipher_abort(operation);
+    }
+    return status;
 }
 
-psa_status_t psa_cipher_update( psa_cipher_operation_t *operation,
-                                const uint8_t *input,
-                                size_t input_length,
-                                uint8_t *output,
-                                size_t output_size,
-                                size_t *output_length )
+psa_status_t psa_cipher_update(psa_cipher_operation_t *operation,
+                               const uint8_t *input,
+                               size_t input_length,
+                               uint8_t *output,
+                               size_t output_size,
+                               size_t *output_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
-    if( operation->id == 0 )
-    {
+    if (operation->id == 0) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    if( operation->iv_required && ! operation->iv_set )
-    {
+    if (operation->iv_required && !operation->iv_set) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    status = psa_driver_wrapper_cipher_update( operation,
-                                               input,
-                                               input_length,
-                                               output,
-                                               output_size,
-                                               output_length );
+    status = psa_driver_wrapper_cipher_update(operation,
+                                              input,
+                                              input_length,
+                                              output,
+                                              output_size,
+                                              output_length);
 
 exit:
-    if( status != PSA_SUCCESS )
-        psa_cipher_abort( operation );
+    if (status != PSA_SUCCESS) {
+        psa_cipher_abort(operation);
+    }
 
-    return( status );
+    return status;
 }
 
-psa_status_t psa_cipher_finish( psa_cipher_operation_t *operation,
-                                uint8_t *output,
-                                size_t output_size,
-                                size_t *output_length )
+psa_status_t psa_cipher_finish(psa_cipher_operation_t *operation,
+                               uint8_t *output,
+                               size_t output_size,
+                               size_t *output_length)
 {
     psa_status_t status = PSA_ERROR_GENERIC_ERROR;
 
-    if( operation->id == 0 )
-    {
+    if (operation->id == 0) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    if( operation->iv_required && ! operation->iv_set )
-    {
+    if (operation->iv_required && !operation->iv_set) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
     }
 
-    status = psa_driver_wrapper_cipher_finish( operation,
-                                               output,
-                                               output_size,
-                                               output_length );
+    status = psa_driver_wrapper_cipher_finish(operation,
+                                              output,
+                                              output_size,
+                                              output_length);
 
 exit:
-    if( status == PSA_SUCCESS )
-        return( psa_cipher_abort( operation ) );
-    else
-    {
+    if (status == PSA_SUCCESS) {
+        return psa_cipher_abort(operation);
+    } else {
         *output_length = 0;
-        (void) psa_cipher_abort( operation );
+        (void) psa_cipher_abort(operation);
 
-        return( status );
+        return status;
     }
 }
 
-psa_status_t psa_cipher_abort( psa_cipher_operation_t *operation )
+psa_status_t psa_cipher_abort(psa_cipher_operation_t *operation)
 {
-    if( operation->id == 0 )
-    {
+    if (operation->id == 0) {
         /* The object has (apparently) been initialized but it is not (yet)
          * in use. It's ok to call abort on such an object, and there's
          * nothing to do. */
-        return( PSA_SUCCESS );
+        return PSA_SUCCESS;
     }
 
-    psa_driver_wrapper_cipher_abort( operation );
+    psa_driver_wrapper_cipher_abort(operation);
 
     operation->id = 0;
     operation->iv_set = 0;
     operation->iv_required = 0;
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
-psa_status_t psa_cipher_encrypt( mbedtls_svc_key_id_t key,
-                                 psa_algorithm_t alg,
-                                 const uint8_t *input,
-                                 size_t input_length,
-                                 uint8_t *output,
-                                 size_t output_size,
-                                 size_t *output_length )
+psa_status_t psa_cipher_encrypt(mbedtls_svc_key_id_t key,
+                                psa_algorithm_t alg,
+                                const uint8_t *input,
+                                size_t input_length,
+                                uint8_t *output,
+                                size_t output_size,
+                                size_t *output_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
@@ -3599,95 +3569,93 @@
     uint8_t local_iv[PSA_CIPHER_IV_MAX_SIZE];
     size_t default_iv_length = 0;
 
-    if( ! PSA_ALG_IS_CIPHER( alg ) )
-    {
+    if (!PSA_ALG_IS_CIPHER(alg)) {
         status = PSA_ERROR_INVALID_ARGUMENT;
         goto exit;
     }
 
-    status = psa_get_and_lock_key_slot_with_policy( key, &slot,
-                                                    PSA_KEY_USAGE_ENCRYPT,
-                                                    alg );
-    if( status != PSA_SUCCESS )
+    status = psa_get_and_lock_key_slot_with_policy(key, &slot,
+                                                   PSA_KEY_USAGE_ENCRYPT,
+                                                   alg);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     psa_key_attributes_t attributes = {
-      .core = slot->attr
+        .core = slot->attr
     };
 
-    default_iv_length = PSA_CIPHER_IV_LENGTH( slot->attr.type, alg );
-    if( default_iv_length > PSA_CIPHER_IV_MAX_SIZE )
-    {
+    default_iv_length = PSA_CIPHER_IV_LENGTH(slot->attr.type, alg);
+    if (default_iv_length > PSA_CIPHER_IV_MAX_SIZE) {
         status = PSA_ERROR_GENERIC_ERROR;
         goto exit;
     }
 
-    if( default_iv_length > 0 )
-    {
-        if( output_size < default_iv_length )
-        {
+    if (default_iv_length > 0) {
+        if (output_size < default_iv_length) {
             status = PSA_ERROR_BUFFER_TOO_SMALL;
             goto exit;
         }
 
-        status = psa_generate_random( local_iv, default_iv_length );
-        if( status != PSA_SUCCESS )
+        status = psa_generate_random(local_iv, default_iv_length);
+        if (status != PSA_SUCCESS) {
             goto exit;
+        }
     }
 
     status = psa_driver_wrapper_cipher_encrypt(
         &attributes, slot->key.data, slot->key.bytes,
         alg, local_iv, default_iv_length, input, input_length,
-        mbedtls_buffer_offset( output, default_iv_length ),
-        output_size - default_iv_length, output_length );
+        mbedtls_buffer_offset(output, default_iv_length),
+        output_size - default_iv_length, output_length);
 
 exit:
-    unlock_status = psa_unlock_key_slot( slot );
-    if( status == PSA_SUCCESS )
+    unlock_status = psa_unlock_key_slot(slot);
+    if (status == PSA_SUCCESS) {
         status = unlock_status;
-
-    if( status == PSA_SUCCESS )
-    {
-        if( default_iv_length > 0 )
-            memcpy( output, local_iv, default_iv_length );
-        *output_length += default_iv_length;
     }
-    else
-        *output_length = 0;
 
-    return( status );
+    if (status == PSA_SUCCESS) {
+        if (default_iv_length > 0) {
+            memcpy(output, local_iv, default_iv_length);
+        }
+        *output_length += default_iv_length;
+    } else {
+        *output_length = 0;
+    }
+
+    return status;
 }
 
-psa_status_t psa_cipher_decrypt( mbedtls_svc_key_id_t key,
-                                 psa_algorithm_t alg,
-                                 const uint8_t *input,
-                                 size_t input_length,
-                                 uint8_t *output,
-                                 size_t output_size,
-                                 size_t *output_length )
+psa_status_t psa_cipher_decrypt(mbedtls_svc_key_id_t key,
+                                psa_algorithm_t alg,
+                                const uint8_t *input,
+                                size_t input_length,
+                                uint8_t *output,
+                                size_t output_size,
+                                size_t *output_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot = NULL;
 
-    if( ! PSA_ALG_IS_CIPHER( alg ) )
-    {
+    if (!PSA_ALG_IS_CIPHER(alg)) {
         status = PSA_ERROR_INVALID_ARGUMENT;
         goto exit;
     }
 
-    status = psa_get_and_lock_key_slot_with_policy( key, &slot,
-                                                    PSA_KEY_USAGE_DECRYPT,
-                                                    alg );
-    if( status != PSA_SUCCESS )
+    status = psa_get_and_lock_key_slot_with_policy(key, &slot,
+                                                   PSA_KEY_USAGE_DECRYPT,
+                                                   alg);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     psa_key_attributes_t attributes = {
-      .core = slot->attr
+        .core = slot->attr
     };
 
-    if( input_length < PSA_CIPHER_IV_LENGTH( slot->attr.type, alg ) )
-    {
+    if (input_length < PSA_CIPHER_IV_LENGTH(slot->attr.type, alg)) {
         status = PSA_ERROR_INVALID_ARGUMENT;
         goto exit;
     }
@@ -3695,17 +3663,19 @@
     status = psa_driver_wrapper_cipher_decrypt(
         &attributes, slot->key.data, slot->key.bytes,
         alg, input, input_length,
-        output, output_size, output_length );
+        output, output_size, output_length);
 
 exit:
-    unlock_status = psa_unlock_key_slot( slot );
-    if( status == PSA_SUCCESS )
+    unlock_status = psa_unlock_key_slot(slot);
+    if (status == PSA_SUCCESS) {
         status = unlock_status;
+    }
 
-    if( status != PSA_SUCCESS )
+    if (status != PSA_SUCCESS) {
         *output_length = 0;
+    }
 
-    return( status );
+    return status;
 }
 
 
@@ -3713,33 +3683,35 @@
 /* AEAD */
 /****************************************************************/
 
-psa_status_t psa_aead_encrypt( mbedtls_svc_key_id_t key,
-                               psa_algorithm_t alg,
-                               const uint8_t *nonce,
-                               size_t nonce_length,
-                               const uint8_t *additional_data,
-                               size_t additional_data_length,
-                               const uint8_t *plaintext,
-                               size_t plaintext_length,
-                               uint8_t *ciphertext,
-                               size_t ciphertext_size,
-                               size_t *ciphertext_length )
+psa_status_t psa_aead_encrypt(mbedtls_svc_key_id_t key,
+                              psa_algorithm_t alg,
+                              const uint8_t *nonce,
+                              size_t nonce_length,
+                              const uint8_t *additional_data,
+                              size_t additional_data_length,
+                              const uint8_t *plaintext,
+                              size_t plaintext_length,
+                              uint8_t *ciphertext,
+                              size_t ciphertext_size,
+                              size_t *ciphertext_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
 
     *ciphertext_length = 0;
 
-    if( !PSA_ALG_IS_AEAD( alg ) || PSA_ALG_IS_WILDCARD( alg ) )
-        return( PSA_ERROR_NOT_SUPPORTED );
+    if (!PSA_ALG_IS_AEAD(alg) || PSA_ALG_IS_WILDCARD(alg)) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
 
     status = psa_get_and_lock_key_slot_with_policy(
-                 key, &slot, PSA_KEY_USAGE_ENCRYPT, alg );
-    if( status != PSA_SUCCESS )
-        return( status );
+        key, &slot, PSA_KEY_USAGE_ENCRYPT, alg);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
     psa_key_attributes_t attributes = {
-      .core = slot->attr
+        .core = slot->attr
     };
 
     status = psa_driver_wrapper_aead_encrypt(
@@ -3748,43 +3720,46 @@
         nonce, nonce_length,
         additional_data, additional_data_length,
         plaintext, plaintext_length,
-        ciphertext, ciphertext_size, ciphertext_length );
+        ciphertext, ciphertext_size, ciphertext_length);
 
-    if( status != PSA_SUCCESS && ciphertext_size != 0 )
-        memset( ciphertext, 0, ciphertext_size );
+    if (status != PSA_SUCCESS && ciphertext_size != 0) {
+        memset(ciphertext, 0, ciphertext_size);
+    }
 
-    psa_unlock_key_slot( slot );
+    psa_unlock_key_slot(slot);
 
-    return( status );
+    return status;
 }
 
-psa_status_t psa_aead_decrypt( mbedtls_svc_key_id_t key,
-                               psa_algorithm_t alg,
-                               const uint8_t *nonce,
-                               size_t nonce_length,
-                               const uint8_t *additional_data,
-                               size_t additional_data_length,
-                               const uint8_t *ciphertext,
-                               size_t ciphertext_length,
-                               uint8_t *plaintext,
-                               size_t plaintext_size,
-                               size_t *plaintext_length )
+psa_status_t psa_aead_decrypt(mbedtls_svc_key_id_t key,
+                              psa_algorithm_t alg,
+                              const uint8_t *nonce,
+                              size_t nonce_length,
+                              const uint8_t *additional_data,
+                              size_t additional_data_length,
+                              const uint8_t *ciphertext,
+                              size_t ciphertext_length,
+                              uint8_t *plaintext,
+                              size_t plaintext_size,
+                              size_t *plaintext_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
 
     *plaintext_length = 0;
 
-    if( !PSA_ALG_IS_AEAD( alg ) || PSA_ALG_IS_WILDCARD( alg ) )
-        return( PSA_ERROR_NOT_SUPPORTED );
+    if (!PSA_ALG_IS_AEAD(alg) || PSA_ALG_IS_WILDCARD(alg)) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
 
     status = psa_get_and_lock_key_slot_with_policy(
-                 key, &slot, PSA_KEY_USAGE_DECRYPT, alg );
-    if( status != PSA_SUCCESS )
-        return( status );
+        key, &slot, PSA_KEY_USAGE_DECRYPT, alg);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
     psa_key_attributes_t attributes = {
-      .core = slot->attr
+        .core = slot->attr
     };
 
     status = psa_driver_wrapper_aead_decrypt(
@@ -3793,14 +3768,15 @@
         nonce, nonce_length,
         additional_data, additional_data_length,
         ciphertext, ciphertext_length,
-        plaintext, plaintext_size, plaintext_length );
+        plaintext, plaintext_size, plaintext_length);
 
-    if( status != PSA_SUCCESS && plaintext_size != 0 )
-        memset( plaintext, 0, plaintext_size );
+    if (status != PSA_SUCCESS && plaintext_size != 0) {
+        memset(plaintext, 0, plaintext_size);
+    }
 
-    psa_unlock_key_slot( slot );
+    psa_unlock_key_slot(slot);
 
-    return( status );
+    return status;
 }
 
 /****************************************************************/
@@ -3820,24 +3796,24 @@
     psa_mac_operation_t *operation,
     psa_algorithm_t hash_alg,
     const uint8_t *hmac_key,
-    size_t hmac_key_length )
+    size_t hmac_key_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
-    psa_set_key_type( &attributes, PSA_KEY_TYPE_HMAC );
-    psa_set_key_bits( &attributes, PSA_BYTES_TO_BITS( hmac_key_length ) );
-    psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_SIGN_HASH );
+    psa_set_key_type(&attributes, PSA_KEY_TYPE_HMAC);
+    psa_set_key_bits(&attributes, PSA_BYTES_TO_BITS(hmac_key_length));
+    psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_SIGN_HASH);
 
     operation->is_sign = 1;
-    operation->mac_size = PSA_HASH_LENGTH( hash_alg );
+    operation->mac_size = PSA_HASH_LENGTH(hash_alg);
 
-    status = psa_driver_wrapper_mac_sign_setup( operation,
-                                                &attributes,
-                                                hmac_key, hmac_key_length,
-                                                PSA_ALG_HMAC( hash_alg ) );
+    status = psa_driver_wrapper_mac_sign_setup(operation,
+                                               &attributes,
+                                               hmac_key, hmac_key_length,
+                                               PSA_ALG_HMAC(hash_alg));
 
-    psa_reset_key_attributes( &attributes );
-    return( status );
+    psa_reset_key_attributes(&attributes);
+    return status;
 }
 #endif /* KDF algorithms reliant on HMAC */
 
@@ -3847,172 +3823,172 @@
 #define HKDF_STATE_OUTPUT 3 /* output started */
 
 static psa_algorithm_t psa_key_derivation_get_kdf_alg(
-    const psa_key_derivation_operation_t *operation )
+    const psa_key_derivation_operation_t *operation)
 {
-    if ( PSA_ALG_IS_KEY_AGREEMENT( operation->alg ) )
-        return( PSA_ALG_KEY_AGREEMENT_GET_KDF( operation->alg ) );
-    else
-        return( operation->alg );
+    if (PSA_ALG_IS_KEY_AGREEMENT(operation->alg)) {
+        return PSA_ALG_KEY_AGREEMENT_GET_KDF(operation->alg);
+    } else {
+        return operation->alg;
+    }
 }
 
-psa_status_t psa_key_derivation_abort( psa_key_derivation_operation_t *operation )
+psa_status_t psa_key_derivation_abort(psa_key_derivation_operation_t *operation)
 {
     psa_status_t status = PSA_SUCCESS;
-    psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg( operation );
-    if( kdf_alg == 0 )
-    {
+    psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation);
+    if (kdf_alg == 0) {
         /* The object has (apparently) been initialized but it is not
          * in use. It's ok to call abort on such an object, and there's
          * nothing to do. */
-    }
-    else
+    } else
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF)
-    if( PSA_ALG_IS_HKDF( kdf_alg ) )
-    {
-        mbedtls_free( operation->ctx.hkdf.info );
-        status = psa_mac_abort( &operation->ctx.hkdf.hmac );
-    }
-    else
+    if (PSA_ALG_IS_HKDF(kdf_alg)) {
+        mbedtls_free(operation->ctx.hkdf.info);
+        status = psa_mac_abort(&operation->ctx.hkdf.hmac);
+    } else
 #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \
     defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS)
-    if( PSA_ALG_IS_TLS12_PRF( kdf_alg ) ||
-             /* TLS-1.2 PSK-to-MS KDF uses the same core as TLS-1.2 PRF */
-             PSA_ALG_IS_TLS12_PSK_TO_MS( kdf_alg ) )
-    {
-        if( operation->ctx.tls12_prf.secret != NULL )
-        {
-            mbedtls_platform_zeroize( operation->ctx.tls12_prf.secret,
-                                      operation->ctx.tls12_prf.secret_length );
-            mbedtls_free( operation->ctx.tls12_prf.secret );
+    if (PSA_ALG_IS_TLS12_PRF(kdf_alg) ||
+        /* TLS-1.2 PSK-to-MS KDF uses the same core as TLS-1.2 PRF */
+        PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) {
+        if (operation->ctx.tls12_prf.secret != NULL) {
+            mbedtls_platform_zeroize(operation->ctx.tls12_prf.secret,
+                                     operation->ctx.tls12_prf.secret_length);
+            mbedtls_free(operation->ctx.tls12_prf.secret);
         }
 
-        if( operation->ctx.tls12_prf.seed != NULL )
-        {
-            mbedtls_platform_zeroize( operation->ctx.tls12_prf.seed,
-                                      operation->ctx.tls12_prf.seed_length );
-            mbedtls_free( operation->ctx.tls12_prf.seed );
+        if (operation->ctx.tls12_prf.seed != NULL) {
+            mbedtls_platform_zeroize(operation->ctx.tls12_prf.seed,
+                                     operation->ctx.tls12_prf.seed_length);
+            mbedtls_free(operation->ctx.tls12_prf.seed);
         }
 
-        if( operation->ctx.tls12_prf.label != NULL )
-        {
-            mbedtls_platform_zeroize( operation->ctx.tls12_prf.label,
-                                      operation->ctx.tls12_prf.label_length );
-            mbedtls_free( operation->ctx.tls12_prf.label );
+        if (operation->ctx.tls12_prf.label != NULL) {
+            mbedtls_platform_zeroize(operation->ctx.tls12_prf.label,
+                                     operation->ctx.tls12_prf.label_length);
+            mbedtls_free(operation->ctx.tls12_prf.label);
         }
 
         status = PSA_SUCCESS;
 
         /* We leave the fields Ai and output_block to be erased safely by the
          * mbedtls_platform_zeroize() in the end of this function. */
-    }
-    else
+    } else
 #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) ||
         * defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) */
     {
         status = PSA_ERROR_BAD_STATE;
     }
-    mbedtls_platform_zeroize( operation, sizeof( *operation ) );
-    return( status );
+    mbedtls_platform_zeroize(operation, sizeof(*operation));
+    return status;
 }
 
 psa_status_t psa_key_derivation_get_capacity(const psa_key_derivation_operation_t *operation,
-                                        size_t *capacity)
+                                             size_t *capacity)
 {
-    if( operation->alg == 0 )
-    {
+    if (operation->alg == 0) {
         /* This is a blank key derivation operation. */
-        return( PSA_ERROR_BAD_STATE );
+        return PSA_ERROR_BAD_STATE;
     }
 
     *capacity = operation->capacity;
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
-psa_status_t psa_key_derivation_set_capacity( psa_key_derivation_operation_t *operation,
-                                         size_t capacity )
+psa_status_t psa_key_derivation_set_capacity(psa_key_derivation_operation_t *operation,
+                                             size_t capacity)
 {
-    if( operation->alg == 0 )
-        return( PSA_ERROR_BAD_STATE );
-    if( capacity > operation->capacity )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (operation->alg == 0) {
+        return PSA_ERROR_BAD_STATE;
+    }
+    if (capacity > operation->capacity) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
     operation->capacity = capacity;
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF)
 /* Read some bytes from an HKDF-based operation. This performs a chunk
  * of the expand phase of the HKDF algorithm. */
-static psa_status_t psa_key_derivation_hkdf_read( psa_hkdf_key_derivation_t *hkdf,
-                                                  psa_algorithm_t hash_alg,
-                                                  uint8_t *output,
-                                                  size_t output_length )
+static psa_status_t psa_key_derivation_hkdf_read(psa_hkdf_key_derivation_t *hkdf,
+                                                 psa_algorithm_t hash_alg,
+                                                 uint8_t *output,
+                                                 size_t output_length)
 {
-    uint8_t hash_length = PSA_HASH_LENGTH( hash_alg );
+    uint8_t hash_length = PSA_HASH_LENGTH(hash_alg);
     size_t hmac_output_length;
     psa_status_t status;
 
-    if( hkdf->state < HKDF_STATE_KEYED || ! hkdf->info_set )
-        return( PSA_ERROR_BAD_STATE );
+    if (hkdf->state < HKDF_STATE_KEYED || !hkdf->info_set) {
+        return PSA_ERROR_BAD_STATE;
+    }
     hkdf->state = HKDF_STATE_OUTPUT;
 
-    while( output_length != 0 )
-    {
+    while (output_length != 0) {
         /* Copy what remains of the current block */
         uint8_t n = hash_length - hkdf->offset_in_block;
-        if( n > output_length )
+        if (n > output_length) {
             n = (uint8_t) output_length;
-        memcpy( output, hkdf->output_block + hkdf->offset_in_block, n );
+        }
+        memcpy(output, hkdf->output_block + hkdf->offset_in_block, n);
         output += n;
         output_length -= n;
         hkdf->offset_in_block += n;
-        if( output_length == 0 )
+        if (output_length == 0) {
             break;
+        }
         /* We can't be wanting more output after block 0xff, otherwise
          * the capacity check in psa_key_derivation_output_bytes() would have
          * prevented this call. It could happen only if the operation
          * object was corrupted or if this function is called directly
          * inside the library. */
-        if( hkdf->block_number == 0xff )
-            return( PSA_ERROR_BAD_STATE );
+        if (hkdf->block_number == 0xff) {
+            return PSA_ERROR_BAD_STATE;
+        }
 
         /* We need a new block */
         ++hkdf->block_number;
         hkdf->offset_in_block = 0;
 
-        status = psa_key_derivation_start_hmac( &hkdf->hmac,
-                                                hash_alg,
-                                                hkdf->prk,
-                                                hash_length );
-        if( status != PSA_SUCCESS )
-            return( status );
-
-        if( hkdf->block_number != 1 )
-        {
-            status = psa_mac_update( &hkdf->hmac,
-                                     hkdf->output_block,
-                                     hash_length );
-            if( status != PSA_SUCCESS )
-                return( status );
+        status = psa_key_derivation_start_hmac(&hkdf->hmac,
+                                               hash_alg,
+                                               hkdf->prk,
+                                               hash_length);
+        if (status != PSA_SUCCESS) {
+            return status;
         }
-        status = psa_mac_update( &hkdf->hmac,
-                                 hkdf->info,
-                                 hkdf->info_length );
-        if( status != PSA_SUCCESS )
-            return( status );
-        status = psa_mac_update( &hkdf->hmac,
-                                 &hkdf->block_number, 1 );
-        if( status != PSA_SUCCESS )
-            return( status );
-        status = psa_mac_sign_finish( &hkdf->hmac,
-                                      hkdf->output_block,
-                                      sizeof( hkdf->output_block ),
-                                      &hmac_output_length );
-        if( status != PSA_SUCCESS )
-            return( status );
+
+        if (hkdf->block_number != 1) {
+            status = psa_mac_update(&hkdf->hmac,
+                                    hkdf->output_block,
+                                    hash_length);
+            if (status != PSA_SUCCESS) {
+                return status;
+            }
+        }
+        status = psa_mac_update(&hkdf->hmac,
+                                hkdf->info,
+                                hkdf->info_length);
+        if (status != PSA_SUCCESS) {
+            return status;
+        }
+        status = psa_mac_update(&hkdf->hmac,
+                                &hkdf->block_number, 1);
+        if (status != PSA_SUCCESS) {
+            return status;
+        }
+        status = psa_mac_sign_finish(&hkdf->hmac,
+                                     hkdf->output_block,
+                                     sizeof(hkdf->output_block),
+                                     &hmac_output_length);
+        if (status != PSA_SUCCESS) {
+            return status;
+        }
     }
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF */
 
@@ -4020,10 +3996,10 @@
     defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS)
 static psa_status_t psa_key_derivation_tls12_prf_generate_next_block(
     psa_tls12_prf_key_derivation_t *tls12_prf,
-    psa_algorithm_t alg )
+    psa_algorithm_t alg)
 {
-    psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH( alg );
-    uint8_t hash_length = PSA_HASH_LENGTH( hash_alg );
+    psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH(alg);
+    uint8_t hash_length = PSA_HASH_LENGTH(hash_alg);
     psa_mac_operation_t hmac = PSA_MAC_OPERATION_INIT;
     size_t hmac_output_length;
     psa_status_t status, cleanup_status;
@@ -4033,8 +4009,9 @@
      * prevented this call. It could happen only if the operation
      * object was corrupted or if this function is called directly
      * inside the library. */
-    if( tls12_prf->block_number == 0xff )
-        return( PSA_ERROR_CORRUPTION_DETECTED );
+    if (tls12_prf->block_number == 0xff) {
+        return PSA_ERROR_CORRUPTION_DETECTED;
+    }
 
     /* We need a new block */
     ++tls12_prf->block_number;
@@ -4057,125 +4034,133 @@
      * `block_number`.
      */
 
-    status = psa_key_derivation_start_hmac( &hmac,
-                                            hash_alg,
-                                            tls12_prf->secret,
-                                            tls12_prf->secret_length );
-    if( status != PSA_SUCCESS )
+    status = psa_key_derivation_start_hmac(&hmac,
+                                           hash_alg,
+                                           tls12_prf->secret,
+                                           tls12_prf->secret_length);
+    if (status != PSA_SUCCESS) {
         goto cleanup;
+    }
 
     /* Calculate A(i) where i = tls12_prf->block_number. */
-    if( tls12_prf->block_number == 1 )
-    {
+    if (tls12_prf->block_number == 1) {
         /* A(1) = HMAC_hash(secret, A(0)), where A(0) = seed. (The RFC overloads
          * the variable seed and in this instance means it in the context of the
          * P_hash function, where seed = label + seed.) */
-        status = psa_mac_update( &hmac,
-                                 tls12_prf->label,
-                                 tls12_prf->label_length );
-        if( status != PSA_SUCCESS )
+        status = psa_mac_update(&hmac,
+                                tls12_prf->label,
+                                tls12_prf->label_length);
+        if (status != PSA_SUCCESS) {
             goto cleanup;
-        status = psa_mac_update( &hmac,
-                                 tls12_prf->seed,
-                                 tls12_prf->seed_length );
-        if( status != PSA_SUCCESS )
+        }
+        status = psa_mac_update(&hmac,
+                                tls12_prf->seed,
+                                tls12_prf->seed_length);
+        if (status != PSA_SUCCESS) {
             goto cleanup;
-    }
-    else
-    {
+        }
+    } else {
         /* A(i) = HMAC_hash(secret, A(i-1)) */
-        status = psa_mac_update( &hmac, tls12_prf->Ai, hash_length );
-        if( status != PSA_SUCCESS )
+        status = psa_mac_update(&hmac, tls12_prf->Ai, hash_length);
+        if (status != PSA_SUCCESS) {
             goto cleanup;
+        }
     }
 
-    status = psa_mac_sign_finish( &hmac,
-                                  tls12_prf->Ai, hash_length,
-                                  &hmac_output_length );
-    if( hmac_output_length != hash_length )
+    status = psa_mac_sign_finish(&hmac,
+                                 tls12_prf->Ai, hash_length,
+                                 &hmac_output_length);
+    if (hmac_output_length != hash_length) {
         status = PSA_ERROR_CORRUPTION_DETECTED;
-    if( status != PSA_SUCCESS )
+    }
+    if (status != PSA_SUCCESS) {
         goto cleanup;
+    }
 
     /* Calculate HMAC_hash(secret, A(i) + label + seed). */
-    status = psa_key_derivation_start_hmac( &hmac,
-                                            hash_alg,
-                                            tls12_prf->secret,
-                                            tls12_prf->secret_length );
-    if( status != PSA_SUCCESS )
+    status = psa_key_derivation_start_hmac(&hmac,
+                                           hash_alg,
+                                           tls12_prf->secret,
+                                           tls12_prf->secret_length);
+    if (status != PSA_SUCCESS) {
         goto cleanup;
-    status = psa_mac_update( &hmac, tls12_prf->Ai, hash_length );
-    if( status != PSA_SUCCESS )
+    }
+    status = psa_mac_update(&hmac, tls12_prf->Ai, hash_length);
+    if (status != PSA_SUCCESS) {
         goto cleanup;
-    status = psa_mac_update( &hmac, tls12_prf->label, tls12_prf->label_length );
-    if( status != PSA_SUCCESS )
+    }
+    status = psa_mac_update(&hmac, tls12_prf->label, tls12_prf->label_length);
+    if (status != PSA_SUCCESS) {
         goto cleanup;
-    status = psa_mac_update( &hmac, tls12_prf->seed, tls12_prf->seed_length );
-    if( status != PSA_SUCCESS )
+    }
+    status = psa_mac_update(&hmac, tls12_prf->seed, tls12_prf->seed_length);
+    if (status != PSA_SUCCESS) {
         goto cleanup;
-    status = psa_mac_sign_finish( &hmac,
-                                  tls12_prf->output_block, hash_length,
-                                  &hmac_output_length );
-    if( status != PSA_SUCCESS )
+    }
+    status = psa_mac_sign_finish(&hmac,
+                                 tls12_prf->output_block, hash_length,
+                                 &hmac_output_length);
+    if (status != PSA_SUCCESS) {
         goto cleanup;
+    }
 
 
 cleanup:
-    cleanup_status = psa_mac_abort( &hmac );
-    if( status == PSA_SUCCESS && cleanup_status != PSA_SUCCESS )
+    cleanup_status = psa_mac_abort(&hmac);
+    if (status == PSA_SUCCESS && cleanup_status != PSA_SUCCESS) {
         status = cleanup_status;
+    }
 
-    return( status );
+    return status;
 }
 
 static psa_status_t psa_key_derivation_tls12_prf_read(
     psa_tls12_prf_key_derivation_t *tls12_prf,
     psa_algorithm_t alg,
     uint8_t *output,
-    size_t output_length )
+    size_t output_length)
 {
-    psa_algorithm_t hash_alg = PSA_ALG_TLS12_PRF_GET_HASH( alg );
-    uint8_t hash_length = PSA_HASH_LENGTH( hash_alg );
+    psa_algorithm_t hash_alg = PSA_ALG_TLS12_PRF_GET_HASH(alg);
+    uint8_t hash_length = PSA_HASH_LENGTH(hash_alg);
     psa_status_t status;
     uint8_t offset, length;
 
-    switch( tls12_prf->state )
-    {
+    switch (tls12_prf->state) {
         case PSA_TLS12_PRF_STATE_LABEL_SET:
             tls12_prf->state = PSA_TLS12_PRF_STATE_OUTPUT;
             break;
         case PSA_TLS12_PRF_STATE_OUTPUT:
             break;
         default:
-            return( PSA_ERROR_BAD_STATE );
+            return PSA_ERROR_BAD_STATE;
     }
 
-    while( output_length != 0 )
-    {
+    while (output_length != 0) {
         /* Check if we have fully processed the current block. */
-        if( tls12_prf->left_in_block == 0 )
-        {
-            status = psa_key_derivation_tls12_prf_generate_next_block( tls12_prf,
-                                                                       alg );
-            if( status != PSA_SUCCESS )
-                return( status );
+        if (tls12_prf->left_in_block == 0) {
+            status = psa_key_derivation_tls12_prf_generate_next_block(tls12_prf,
+                                                                      alg);
+            if (status != PSA_SUCCESS) {
+                return status;
+            }
 
             continue;
         }
 
-        if( tls12_prf->left_in_block > output_length )
+        if (tls12_prf->left_in_block > output_length) {
             length = (uint8_t) output_length;
-        else
+        } else {
             length = tls12_prf->left_in_block;
+        }
 
         offset = hash_length - tls12_prf->left_in_block;
-        memcpy( output, tls12_prf->output_block + offset, length );
+        memcpy(output, tls12_prf->output_block + offset, length);
         output += length;
         output_length -= length;
         tls12_prf->left_in_block -= length;
     }
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF ||
         * MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */
@@ -4183,140 +4168,142 @@
 psa_status_t psa_key_derivation_output_bytes(
     psa_key_derivation_operation_t *operation,
     uint8_t *output,
-    size_t output_length )
+    size_t output_length)
 {
     psa_status_t status;
-    psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg( operation );
+    psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation);
 
-    if( operation->alg == 0 )
-    {
+    if (operation->alg == 0) {
         /* This is a blank operation. */
-        return( PSA_ERROR_BAD_STATE );
+        return PSA_ERROR_BAD_STATE;
     }
 
-    if( output_length > operation->capacity )
-    {
+    if (output_length > operation->capacity) {
         operation->capacity = 0;
         /* Go through the error path to wipe all confidential data now
          * that the operation object is useless. */
         status = PSA_ERROR_INSUFFICIENT_DATA;
         goto exit;
     }
-    if( output_length == 0 && operation->capacity == 0 )
-    {
+    if (output_length == 0 && operation->capacity == 0) {
         /* Edge case: this is a finished operation, and 0 bytes
          * were requested. The right error in this case could
          * be either INSUFFICIENT_CAPACITY or BAD_STATE. Return
          * INSUFFICIENT_CAPACITY, which is right for a finished
          * operation, for consistency with the case when
          * output_length > 0. */
-        return( PSA_ERROR_INSUFFICIENT_DATA );
+        return PSA_ERROR_INSUFFICIENT_DATA;
     }
     operation->capacity -= output_length;
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF)
-    if( PSA_ALG_IS_HKDF( kdf_alg ) )
-    {
-        psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH( kdf_alg );
-        status = psa_key_derivation_hkdf_read( &operation->ctx.hkdf, hash_alg,
-                                          output, output_length );
-    }
-    else
+    if (PSA_ALG_IS_HKDF(kdf_alg)) {
+        psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH(kdf_alg);
+        status = psa_key_derivation_hkdf_read(&operation->ctx.hkdf, hash_alg,
+                                              output, output_length);
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \
     defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS)
-    if( PSA_ALG_IS_TLS12_PRF( kdf_alg ) ||
-        PSA_ALG_IS_TLS12_PSK_TO_MS( kdf_alg ) )
-    {
-        status = psa_key_derivation_tls12_prf_read( &operation->ctx.tls12_prf,
-                                                    kdf_alg, output,
-                                                    output_length );
-    }
-    else
+    if (PSA_ALG_IS_TLS12_PRF(kdf_alg) ||
+        PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) {
+        status = psa_key_derivation_tls12_prf_read(&operation->ctx.tls12_prf,
+                                                   kdf_alg, output,
+                                                   output_length);
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF ||
         * MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */
     {
         (void) kdf_alg;
-        return( PSA_ERROR_BAD_STATE );
+        return PSA_ERROR_BAD_STATE;
     }
 
 exit:
-    if( status != PSA_SUCCESS )
-    {
+    if (status != PSA_SUCCESS) {
         /* Preserve the algorithm upon errors, but clear all sensitive state.
          * This allows us to differentiate between exhausted operations and
          * blank operations, so we can return PSA_ERROR_BAD_STATE on blank
          * operations. */
         psa_algorithm_t alg = operation->alg;
-        psa_key_derivation_abort( operation );
+        psa_key_derivation_abort(operation);
         operation->alg = alg;
-        memset( output, '!', output_length );
+        memset(output, '!', output_length);
     }
-    return( status );
+    return status;
 }
 
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES)
-static void psa_des_set_key_parity( uint8_t *data, size_t data_size )
+static void psa_des_set_key_parity(uint8_t *data, size_t data_size)
 {
-    if( data_size >= 8 )
-        mbedtls_des_key_set_parity( data );
-    if( data_size >= 16 )
-        mbedtls_des_key_set_parity( data + 8 );
-    if( data_size >= 24 )
-        mbedtls_des_key_set_parity( data + 16 );
+    if (data_size >= 8) {
+        mbedtls_des_key_set_parity(data);
+    }
+    if (data_size >= 16) {
+        mbedtls_des_key_set_parity(data + 8);
+    }
+    if (data_size >= 24) {
+        mbedtls_des_key_set_parity(data + 16);
+    }
 }
 #endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES */
 
 static psa_status_t psa_generate_derived_key_internal(
     psa_key_slot_t *slot,
     size_t bits,
-    psa_key_derivation_operation_t *operation )
+    psa_key_derivation_operation_t *operation)
 {
     uint8_t *data = NULL;
-    size_t bytes = PSA_BITS_TO_BYTES( bits );
+    size_t bytes = PSA_BITS_TO_BYTES(bits);
     psa_status_t status;
 
-    if( ! key_type_is_raw_bytes( slot->attr.type ) )
-        return( PSA_ERROR_INVALID_ARGUMENT );
-    if( bits % 8 != 0 )
-        return( PSA_ERROR_INVALID_ARGUMENT );
-    data = mbedtls_calloc( 1, bytes );
-    if( data == NULL )
-        return( PSA_ERROR_INSUFFICIENT_MEMORY );
+    if (!key_type_is_raw_bytes(slot->attr.type)) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
+    if (bits % 8 != 0) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
+    data = mbedtls_calloc(1, bytes);
+    if (data == NULL) {
+        return PSA_ERROR_INSUFFICIENT_MEMORY;
+    }
 
-    status = psa_key_derivation_output_bytes( operation, data, bytes );
-    if( status != PSA_SUCCESS )
+    status = psa_key_derivation_output_bytes(operation, data, bytes);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES)
-    if( slot->attr.type == PSA_KEY_TYPE_DES )
-        psa_des_set_key_parity( data, bytes );
+    if (slot->attr.type == PSA_KEY_TYPE_DES) {
+        psa_des_set_key_parity(data, bytes);
+    }
 #endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES */
 
-    status = psa_allocate_buffer_to_slot( slot, bytes );
-    if( status != PSA_SUCCESS )
+    status = psa_allocate_buffer_to_slot(slot, bytes);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     slot->attr.bits = (psa_key_bits_t) bits;
     psa_key_attributes_t attributes = {
-      .core = slot->attr
+        .core = slot->attr
     };
 
-    status = psa_driver_wrapper_import_key( &attributes,
-                                            data, bytes,
-                                            slot->key.data,
-                                            slot->key.bytes,
-                                            &slot->key.bytes, &bits );
-    if( bits != slot->attr.bits )
+    status = psa_driver_wrapper_import_key(&attributes,
+                                           data, bytes,
+                                           slot->key.data,
+                                           slot->key.bytes,
+                                           &slot->key.bytes, &bits);
+    if (bits != slot->attr.bits) {
         status = PSA_ERROR_INVALID_ARGUMENT;
+    }
 
 exit:
-    mbedtls_free( data );
-    return( status );
+    mbedtls_free(data);
+    return status;
 }
 
-psa_status_t psa_key_derivation_output_key( const psa_key_attributes_t *attributes,
-                                       psa_key_derivation_operation_t *operation,
-                                       mbedtls_svc_key_id_t *key )
+psa_status_t psa_key_derivation_output_key(const psa_key_attributes_t *attributes,
+                                           psa_key_derivation_operation_t *operation,
+                                           mbedtls_svc_key_id_t *key)
 {
     psa_status_t status;
     psa_key_slot_t *slot = NULL;
@@ -4326,36 +4313,39 @@
 
     /* Reject any attempt to create a zero-length key so that we don't
      * risk tripping up later, e.g. on a malloc(0) that returns NULL. */
-    if( psa_get_key_bits( attributes ) == 0 )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (psa_get_key_bits(attributes) == 0) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
-    if( operation->alg == PSA_ALG_NONE )
-        return( PSA_ERROR_BAD_STATE );
+    if (operation->alg == PSA_ALG_NONE) {
+        return PSA_ERROR_BAD_STATE;
+    }
 
-    if( ! operation->can_output_key )
-        return( PSA_ERROR_NOT_PERMITTED );
+    if (!operation->can_output_key) {
+        return PSA_ERROR_NOT_PERMITTED;
+    }
 
-    status = psa_start_key_creation( PSA_KEY_CREATION_DERIVE, attributes,
-                                     &slot, &driver );
+    status = psa_start_key_creation(PSA_KEY_CREATION_DERIVE, attributes,
+                                    &slot, &driver);
 #if defined(MBEDTLS_PSA_CRYPTO_SE_C)
-    if( driver != NULL )
-    {
+    if (driver != NULL) {
         /* Deriving a key in a secure element is not implemented yet. */
         status = PSA_ERROR_NOT_SUPPORTED;
     }
 #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
-    if( status == PSA_SUCCESS )
-    {
-        status = psa_generate_derived_key_internal( slot,
-                                                    attributes->core.bits,
-                                                    operation );
+    if (status == PSA_SUCCESS) {
+        status = psa_generate_derived_key_internal(slot,
+                                                   attributes->core.bits,
+                                                   operation);
     }
-    if( status == PSA_SUCCESS )
-        status = psa_finish_key_creation( slot, driver, key );
-    if( status != PSA_SUCCESS )
-        psa_fail_key_creation( slot, driver );
+    if (status == PSA_SUCCESS) {
+        status = psa_finish_key_creation(slot, driver, key);
+    }
+    if (status != PSA_SUCCESS) {
+        psa_fail_key_creation(slot, driver);
+    }
 
-    return( status );
+    return status;
 }
 
 
@@ -4365,272 +4355,284 @@
 /****************************************************************/
 
 #if defined(AT_LEAST_ONE_BUILTIN_KDF)
-static int is_kdf_alg_supported( psa_algorithm_t kdf_alg )
+static int is_kdf_alg_supported(psa_algorithm_t kdf_alg)
 {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF)
-    if( PSA_ALG_IS_HKDF( kdf_alg ) )
-        return( 1 );
+    if (PSA_ALG_IS_HKDF(kdf_alg)) {
+        return 1;
+    }
 #endif
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF)
-    if( PSA_ALG_IS_TLS12_PRF( kdf_alg ) )
-        return( 1 );
+    if (PSA_ALG_IS_TLS12_PRF(kdf_alg)) {
+        return 1;
+    }
 #endif
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS)
-    if( PSA_ALG_IS_TLS12_PSK_TO_MS( kdf_alg ) )
-        return( 1 );
+    if (PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) {
+        return 1;
+    }
 #endif
-    return( 0 );
+    return 0;
 }
 
-static psa_status_t psa_hash_try_support( psa_algorithm_t alg )
+static psa_status_t psa_hash_try_support(psa_algorithm_t alg)
 {
     psa_hash_operation_t operation = PSA_HASH_OPERATION_INIT;
-    psa_status_t status = psa_hash_setup( &operation, alg );
-    psa_hash_abort( &operation );
-    return( status );
+    psa_status_t status = psa_hash_setup(&operation, alg);
+    psa_hash_abort(&operation);
+    return status;
 }
 
 static psa_status_t psa_key_derivation_setup_kdf(
     psa_key_derivation_operation_t *operation,
-    psa_algorithm_t kdf_alg )
+    psa_algorithm_t kdf_alg)
 {
     /* Make sure that operation->ctx is properly zero-initialised. (Macro
      * initialisers for this union leave some bytes unspecified.) */
-    memset( &operation->ctx, 0, sizeof( operation->ctx ) );
+    memset(&operation->ctx, 0, sizeof(operation->ctx));
 
     /* Make sure that kdf_alg is a supported key derivation algorithm. */
-    if( ! is_kdf_alg_supported( kdf_alg ) )
-        return( PSA_ERROR_NOT_SUPPORTED );
+    if (!is_kdf_alg_supported(kdf_alg)) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
 
     /* All currently supported key derivation algorithms are based on a
      * hash algorithm. */
-    psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH( kdf_alg );
-    size_t hash_size = PSA_HASH_LENGTH( hash_alg );
-    if( hash_size == 0 )
-        return( PSA_ERROR_NOT_SUPPORTED );
+    psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH(kdf_alg);
+    size_t hash_size = PSA_HASH_LENGTH(hash_alg);
+    if (hash_size == 0) {
+        return PSA_ERROR_NOT_SUPPORTED;
+    }
 
     /* Make sure that hash_alg is a supported hash algorithm. Otherwise
      * we might fail later, which is somewhat unfriendly and potentially
      * risk-prone. */
-    psa_status_t status = psa_hash_try_support( hash_alg );
-    if( status != PSA_SUCCESS )
-        return( status );
+    psa_status_t status = psa_hash_try_support(hash_alg);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
 
-    if( ( PSA_ALG_IS_TLS12_PRF( kdf_alg ) ||
-          PSA_ALG_IS_TLS12_PSK_TO_MS( kdf_alg ) ) &&
-        ! ( hash_alg == PSA_ALG_SHA_256 || hash_alg == PSA_ALG_SHA_384 ) )
-    {
-        return( PSA_ERROR_NOT_SUPPORTED );
+    if ((PSA_ALG_IS_TLS12_PRF(kdf_alg) ||
+         PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) &&
+        !(hash_alg == PSA_ALG_SHA_256 || hash_alg == PSA_ALG_SHA_384)) {
+        return PSA_ERROR_NOT_SUPPORTED;
     }
 
     operation->capacity = 255 * hash_size;
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
-static psa_status_t psa_key_agreement_try_support( psa_algorithm_t alg )
+static psa_status_t psa_key_agreement_try_support(psa_algorithm_t alg)
 {
 #if defined(PSA_WANT_ALG_ECDH)
-    if( alg == PSA_ALG_ECDH )
-        return( PSA_SUCCESS );
+    if (alg == PSA_ALG_ECDH) {
+        return PSA_SUCCESS;
+    }
 #endif
     (void) alg;
-    return( PSA_ERROR_NOT_SUPPORTED );
+    return PSA_ERROR_NOT_SUPPORTED;
 }
 #endif /* AT_LEAST_ONE_BUILTIN_KDF */
 
-psa_status_t psa_key_derivation_setup( psa_key_derivation_operation_t *operation,
-                                       psa_algorithm_t alg )
+psa_status_t psa_key_derivation_setup(psa_key_derivation_operation_t *operation,
+                                      psa_algorithm_t alg)
 {
     psa_status_t status;
 
-    if( operation->alg != 0 )
-        return( PSA_ERROR_BAD_STATE );
-
-    if( PSA_ALG_IS_RAW_KEY_AGREEMENT( alg ) )
-        return( PSA_ERROR_INVALID_ARGUMENT );
-    else if( PSA_ALG_IS_KEY_AGREEMENT( alg ) )
-    {
-#if defined(AT_LEAST_ONE_BUILTIN_KDF)
-        psa_algorithm_t kdf_alg = PSA_ALG_KEY_AGREEMENT_GET_KDF( alg );
-        psa_algorithm_t ka_alg = PSA_ALG_KEY_AGREEMENT_GET_BASE( alg );
-        status = psa_key_agreement_try_support( ka_alg );
-        if( status != PSA_SUCCESS )
-            return( status );
-        status = psa_key_derivation_setup_kdf( operation, kdf_alg );
-#else
-        return( PSA_ERROR_NOT_SUPPORTED );
-#endif /* AT_LEAST_ONE_BUILTIN_KDF */
+    if (operation->alg != 0) {
+        return PSA_ERROR_BAD_STATE;
     }
-    else if( PSA_ALG_IS_KEY_DERIVATION( alg ) )
-    {
-#if defined(AT_LEAST_ONE_BUILTIN_KDF)
-        status = psa_key_derivation_setup_kdf( operation, alg );
-#else
-        return( PSA_ERROR_NOT_SUPPORTED );
-#endif /* AT_LEAST_ONE_BUILTIN_KDF */
-    }
-    else
-        return( PSA_ERROR_INVALID_ARGUMENT );
 
-    if( status == PSA_SUCCESS )
+    if (PSA_ALG_IS_RAW_KEY_AGREEMENT(alg)) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    } else if (PSA_ALG_IS_KEY_AGREEMENT(alg)) {
+#if defined(AT_LEAST_ONE_BUILTIN_KDF)
+        psa_algorithm_t kdf_alg = PSA_ALG_KEY_AGREEMENT_GET_KDF(alg);
+        psa_algorithm_t ka_alg = PSA_ALG_KEY_AGREEMENT_GET_BASE(alg);
+        status = psa_key_agreement_try_support(ka_alg);
+        if (status != PSA_SUCCESS) {
+            return status;
+        }
+        status = psa_key_derivation_setup_kdf(operation, kdf_alg);
+#else
+        return PSA_ERROR_NOT_SUPPORTED;
+#endif /* AT_LEAST_ONE_BUILTIN_KDF */
+    } else if (PSA_ALG_IS_KEY_DERIVATION(alg)) {
+#if defined(AT_LEAST_ONE_BUILTIN_KDF)
+        status = psa_key_derivation_setup_kdf(operation, alg);
+#else
+        return PSA_ERROR_NOT_SUPPORTED;
+#endif /* AT_LEAST_ONE_BUILTIN_KDF */
+    } else {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
+
+    if (status == PSA_SUCCESS) {
         operation->alg = alg;
-    return( status );
+    }
+    return status;
 }
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF)
-static psa_status_t psa_hkdf_input( psa_hkdf_key_derivation_t *hkdf,
-                                    psa_algorithm_t hash_alg,
-                                    psa_key_derivation_step_t step,
-                                    const uint8_t *data,
-                                    size_t data_length )
+static psa_status_t psa_hkdf_input(psa_hkdf_key_derivation_t *hkdf,
+                                   psa_algorithm_t hash_alg,
+                                   psa_key_derivation_step_t step,
+                                   const uint8_t *data,
+                                   size_t data_length)
 {
     psa_status_t status;
-    switch( step )
-    {
+    switch (step) {
         case PSA_KEY_DERIVATION_INPUT_SALT:
-            if( hkdf->state != HKDF_STATE_INIT )
-                return( PSA_ERROR_BAD_STATE );
-            else
-            {
-                status = psa_key_derivation_start_hmac( &hkdf->hmac,
-                                                        hash_alg,
-                                                        data, data_length );
-                if( status != PSA_SUCCESS )
-                    return( status );
+            if (hkdf->state != HKDF_STATE_INIT) {
+                return PSA_ERROR_BAD_STATE;
+            } else {
+                status = psa_key_derivation_start_hmac(&hkdf->hmac,
+                                                       hash_alg,
+                                                       data, data_length);
+                if (status != PSA_SUCCESS) {
+                    return status;
+                }
                 hkdf->state = HKDF_STATE_STARTED;
-                return( PSA_SUCCESS );
+                return PSA_SUCCESS;
             }
         case PSA_KEY_DERIVATION_INPUT_SECRET:
             /* If no salt was provided, use an empty salt. */
-            if( hkdf->state == HKDF_STATE_INIT )
-            {
-                status = psa_key_derivation_start_hmac( &hkdf->hmac,
-                                                        hash_alg,
-                                                        NULL, 0 );
-                if( status != PSA_SUCCESS )
-                    return( status );
+            if (hkdf->state == HKDF_STATE_INIT) {
+                status = psa_key_derivation_start_hmac(&hkdf->hmac,
+                                                       hash_alg,
+                                                       NULL, 0);
+                if (status != PSA_SUCCESS) {
+                    return status;
+                }
                 hkdf->state = HKDF_STATE_STARTED;
             }
-            if( hkdf->state != HKDF_STATE_STARTED )
-                return( PSA_ERROR_BAD_STATE );
-            status = psa_mac_update( &hkdf->hmac,
-                                     data, data_length );
-            if( status != PSA_SUCCESS )
-                return( status );
-            status = psa_mac_sign_finish( &hkdf->hmac,
-                                          hkdf->prk,
-                                          sizeof( hkdf->prk ),
-                                          &data_length );
-            if( status != PSA_SUCCESS )
-                return( status );
-            hkdf->offset_in_block = PSA_HASH_LENGTH( hash_alg );
+            if (hkdf->state != HKDF_STATE_STARTED) {
+                return PSA_ERROR_BAD_STATE;
+            }
+            status = psa_mac_update(&hkdf->hmac,
+                                    data, data_length);
+            if (status != PSA_SUCCESS) {
+                return status;
+            }
+            status = psa_mac_sign_finish(&hkdf->hmac,
+                                         hkdf->prk,
+                                         sizeof(hkdf->prk),
+                                         &data_length);
+            if (status != PSA_SUCCESS) {
+                return status;
+            }
+            hkdf->offset_in_block = PSA_HASH_LENGTH(hash_alg);
             hkdf->block_number = 0;
             hkdf->state = HKDF_STATE_KEYED;
-            return( PSA_SUCCESS );
+            return PSA_SUCCESS;
         case PSA_KEY_DERIVATION_INPUT_INFO:
-            if( hkdf->state == HKDF_STATE_OUTPUT )
-                return( PSA_ERROR_BAD_STATE );
-            if( hkdf->info_set )
-                return( PSA_ERROR_BAD_STATE );
+            if (hkdf->state == HKDF_STATE_OUTPUT) {
+                return PSA_ERROR_BAD_STATE;
+            }
+            if (hkdf->info_set) {
+                return PSA_ERROR_BAD_STATE;
+            }
             hkdf->info_length = data_length;
-            if( data_length != 0 )
-            {
-                hkdf->info = mbedtls_calloc( 1, data_length );
-                if( hkdf->info == NULL )
-                    return( PSA_ERROR_INSUFFICIENT_MEMORY );
-                memcpy( hkdf->info, data, data_length );
+            if (data_length != 0) {
+                hkdf->info = mbedtls_calloc(1, data_length);
+                if (hkdf->info == NULL) {
+                    return PSA_ERROR_INSUFFICIENT_MEMORY;
+                }
+                memcpy(hkdf->info, data, data_length);
             }
             hkdf->info_set = 1;
-            return( PSA_SUCCESS );
+            return PSA_SUCCESS;
         default:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
     }
 }
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF */
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \
     defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS)
-static psa_status_t psa_tls12_prf_set_seed( psa_tls12_prf_key_derivation_t *prf,
-                                            const uint8_t *data,
-                                            size_t data_length )
+static psa_status_t psa_tls12_prf_set_seed(psa_tls12_prf_key_derivation_t *prf,
+                                           const uint8_t *data,
+                                           size_t data_length)
 {
-    if( prf->state != PSA_TLS12_PRF_STATE_INIT )
-        return( PSA_ERROR_BAD_STATE );
+    if (prf->state != PSA_TLS12_PRF_STATE_INIT) {
+        return PSA_ERROR_BAD_STATE;
+    }
 
-    if( data_length != 0 )
-    {
-        prf->seed = mbedtls_calloc( 1, data_length );
-        if( prf->seed == NULL )
-            return( PSA_ERROR_INSUFFICIENT_MEMORY );
+    if (data_length != 0) {
+        prf->seed = mbedtls_calloc(1, data_length);
+        if (prf->seed == NULL) {
+            return PSA_ERROR_INSUFFICIENT_MEMORY;
+        }
 
-        memcpy( prf->seed, data, data_length );
+        memcpy(prf->seed, data, data_length);
         prf->seed_length = data_length;
     }
 
     prf->state = PSA_TLS12_PRF_STATE_SEED_SET;
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
-static psa_status_t psa_tls12_prf_set_key( psa_tls12_prf_key_derivation_t *prf,
-                                           const uint8_t *data,
-                                           size_t data_length )
+static psa_status_t psa_tls12_prf_set_key(psa_tls12_prf_key_derivation_t *prf,
+                                          const uint8_t *data,
+                                          size_t data_length)
 {
-    if( prf->state != PSA_TLS12_PRF_STATE_SEED_SET )
-        return( PSA_ERROR_BAD_STATE );
+    if (prf->state != PSA_TLS12_PRF_STATE_SEED_SET) {
+        return PSA_ERROR_BAD_STATE;
+    }
 
-    if( data_length != 0 )
-    {
-        prf->secret = mbedtls_calloc( 1, data_length );
-        if( prf->secret == NULL )
-            return( PSA_ERROR_INSUFFICIENT_MEMORY );
+    if (data_length != 0) {
+        prf->secret = mbedtls_calloc(1, data_length);
+        if (prf->secret == NULL) {
+            return PSA_ERROR_INSUFFICIENT_MEMORY;
+        }
 
-        memcpy( prf->secret, data, data_length );
+        memcpy(prf->secret, data, data_length);
         prf->secret_length = data_length;
     }
 
     prf->state = PSA_TLS12_PRF_STATE_KEY_SET;
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
-static psa_status_t psa_tls12_prf_set_label( psa_tls12_prf_key_derivation_t *prf,
-                                             const uint8_t *data,
-                                             size_t data_length )
+static psa_status_t psa_tls12_prf_set_label(psa_tls12_prf_key_derivation_t *prf,
+                                            const uint8_t *data,
+                                            size_t data_length)
 {
-    if( prf->state != PSA_TLS12_PRF_STATE_KEY_SET )
-        return( PSA_ERROR_BAD_STATE );
+    if (prf->state != PSA_TLS12_PRF_STATE_KEY_SET) {
+        return PSA_ERROR_BAD_STATE;
+    }
 
-    if( data_length != 0 )
-    {
-        prf->label = mbedtls_calloc( 1, data_length );
-        if( prf->label == NULL )
-            return( PSA_ERROR_INSUFFICIENT_MEMORY );
+    if (data_length != 0) {
+        prf->label = mbedtls_calloc(1, data_length);
+        if (prf->label == NULL) {
+            return PSA_ERROR_INSUFFICIENT_MEMORY;
+        }
 
-        memcpy( prf->label, data, data_length );
+        memcpy(prf->label, data, data_length);
         prf->label_length = data_length;
     }
 
     prf->state = PSA_TLS12_PRF_STATE_LABEL_SET;
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
-static psa_status_t psa_tls12_prf_input( psa_tls12_prf_key_derivation_t *prf,
-                                         psa_key_derivation_step_t step,
-                                         const uint8_t *data,
-                                         size_t data_length )
+static psa_status_t psa_tls12_prf_input(psa_tls12_prf_key_derivation_t *prf,
+                                        psa_key_derivation_step_t step,
+                                        const uint8_t *data,
+                                        size_t data_length)
 {
-    switch( step )
-    {
+    switch (step) {
         case PSA_KEY_DERIVATION_INPUT_SEED:
-            return( psa_tls12_prf_set_seed( prf, data, data_length ) );
+            return psa_tls12_prf_set_seed(prf, data, data_length);
         case PSA_KEY_DERIVATION_INPUT_SECRET:
-            return( psa_tls12_prf_set_key( prf, data, data_length ) );
+            return psa_tls12_prf_set_key(prf, data, data_length);
         case PSA_KEY_DERIVATION_INPUT_LABEL:
-            return( psa_tls12_prf_set_label( prf, data, data_length ) );
+            return psa_tls12_prf_set_label(prf, data, data_length);
         default:
-            return( PSA_ERROR_INVALID_ARGUMENT );
+            return PSA_ERROR_INVALID_ARGUMENT;
     }
 }
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) ||
@@ -4640,14 +4642,15 @@
 static psa_status_t psa_tls12_prf_psk_to_ms_set_key(
     psa_tls12_prf_key_derivation_t *prf,
     const uint8_t *data,
-    size_t data_length )
+    size_t data_length)
 {
     psa_status_t status;
-    uint8_t pms[ 4 + 2 * PSA_TLS12_PSK_TO_MS_PSK_MAX_SIZE ];
+    uint8_t pms[4 + 2 * PSA_TLS12_PSK_TO_MS_PSK_MAX_SIZE];
     uint8_t *cur = pms;
 
-    if( data_length > PSA_TLS12_PSK_TO_MS_PSK_MAX_SIZE )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (data_length > PSA_TLS12_PSK_TO_MS_PSK_MAX_SIZE) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
     /* Quoting RFC 4279, Section 2:
      *
@@ -4656,34 +4659,33 @@
      * uint16 with the value N, and the PSK itself.
      */
 
-    *cur++ = MBEDTLS_BYTE_1( data_length );
-    *cur++ = MBEDTLS_BYTE_0( data_length );
-    memset( cur, 0, data_length );
+    *cur++ = MBEDTLS_BYTE_1(data_length);
+    *cur++ = MBEDTLS_BYTE_0(data_length);
+    memset(cur, 0, data_length);
     cur += data_length;
     *cur++ = pms[0];
     *cur++ = pms[1];
-    memcpy( cur, data, data_length );
+    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, cur - pms);
 
-    mbedtls_platform_zeroize( pms, sizeof( pms ) );
-    return( status );
+    mbedtls_platform_zeroize(pms, sizeof(pms));
+    return status;
 }
 
 static psa_status_t psa_tls12_prf_psk_to_ms_input(
     psa_tls12_prf_key_derivation_t *prf,
     psa_key_derivation_step_t step,
     const uint8_t *data,
-    size_t data_length )
+    size_t data_length)
 {
-    if( step == PSA_KEY_DERIVATION_INPUT_SECRET )
-    {
-        return( psa_tls12_prf_psk_to_ms_set_key( prf,
-                                                 data, data_length ) );
+    if (step == PSA_KEY_DERIVATION_INPUT_SECRET) {
+        return psa_tls12_prf_psk_to_ms_set_key(prf,
+                                               data, data_length);
     }
 
-    return( psa_tls12_prf_input( prf, step, data, data_length ) );
+    return psa_tls12_prf_input(prf, step, data, data_length);
 }
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */
 
@@ -4698,27 +4700,30 @@
  */
 static int psa_key_derivation_check_input_type(
     psa_key_derivation_step_t step,
-    psa_key_type_t key_type )
+    psa_key_type_t key_type)
 {
-    switch( step )
-    {
+    switch (step) {
         case PSA_KEY_DERIVATION_INPUT_SECRET:
-            if( key_type == PSA_KEY_TYPE_DERIVE )
-                return( PSA_SUCCESS );
-            if( key_type == PSA_KEY_TYPE_NONE )
-                return( PSA_SUCCESS );
+            if (key_type == PSA_KEY_TYPE_DERIVE) {
+                return PSA_SUCCESS;
+            }
+            if (key_type == PSA_KEY_TYPE_NONE) {
+                return PSA_SUCCESS;
+            }
             break;
         case PSA_KEY_DERIVATION_INPUT_LABEL:
         case PSA_KEY_DERIVATION_INPUT_SALT:
         case PSA_KEY_DERIVATION_INPUT_INFO:
         case PSA_KEY_DERIVATION_INPUT_SEED:
-            if( key_type == PSA_KEY_TYPE_RAW_DATA )
-                return( PSA_SUCCESS );
-            if( key_type == PSA_KEY_TYPE_NONE )
-                return( PSA_SUCCESS );
+            if (key_type == PSA_KEY_TYPE_RAW_DATA) {
+                return PSA_SUCCESS;
+            }
+            if (key_type == PSA_KEY_TYPE_NONE) {
+                return PSA_SUCCESS;
+            }
             break;
     }
-    return( PSA_ERROR_INVALID_ARGUMENT );
+    return PSA_ERROR_INVALID_ARGUMENT;
 }
 
 static psa_status_t psa_key_derivation_input_internal(
@@ -4726,95 +4731,91 @@
     psa_key_derivation_step_t step,
     psa_key_type_t key_type,
     const uint8_t *data,
-    size_t data_length )
+    size_t data_length)
 {
     psa_status_t status;
-    psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg( operation );
+    psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation);
 
-    status = psa_key_derivation_check_input_type( step, key_type );
-    if( status != PSA_SUCCESS )
+    status = psa_key_derivation_check_input_type(step, key_type);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF)
-    if( PSA_ALG_IS_HKDF( kdf_alg ) )
-    {
-        status = psa_hkdf_input( &operation->ctx.hkdf,
-                                 PSA_ALG_HKDF_GET_HASH( kdf_alg ),
-                                 step, data, data_length );
-    }
-    else
+    if (PSA_ALG_IS_HKDF(kdf_alg)) {
+        status = psa_hkdf_input(&operation->ctx.hkdf,
+                                PSA_ALG_HKDF_GET_HASH(kdf_alg),
+                                step, data, data_length);
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF)
-    if( PSA_ALG_IS_TLS12_PRF( kdf_alg ) )
-    {
-        status = psa_tls12_prf_input( &operation->ctx.tls12_prf,
-                                      step, data, data_length );
-    }
-    else
+    if (PSA_ALG_IS_TLS12_PRF(kdf_alg)) {
+        status = psa_tls12_prf_input(&operation->ctx.tls12_prf,
+                                     step, data, data_length);
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF */
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS)
-    if( PSA_ALG_IS_TLS12_PSK_TO_MS( kdf_alg ) )
-    {
-        status = psa_tls12_prf_psk_to_ms_input( &operation->ctx.tls12_prf,
-                                                step, data, data_length );
-    }
-    else
+    if (PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) {
+        status = psa_tls12_prf_psk_to_ms_input(&operation->ctx.tls12_prf,
+                                               step, data, data_length);
+    } else
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */
     {
         /* This can't happen unless the operation object was not initialized */
         (void) data;
         (void) data_length;
         (void) kdf_alg;
-        return( PSA_ERROR_BAD_STATE );
+        return PSA_ERROR_BAD_STATE;
     }
 
 exit:
-    if( status != PSA_SUCCESS )
-        psa_key_derivation_abort( operation );
-    return( status );
+    if (status != PSA_SUCCESS) {
+        psa_key_derivation_abort(operation);
+    }
+    return status;
 }
 
 psa_status_t psa_key_derivation_input_bytes(
     psa_key_derivation_operation_t *operation,
     psa_key_derivation_step_t step,
     const uint8_t *data,
-    size_t data_length )
+    size_t data_length)
 {
-    return( psa_key_derivation_input_internal( operation, step,
-                                               PSA_KEY_TYPE_NONE,
-                                               data, data_length ) );
+    return psa_key_derivation_input_internal(operation, step,
+                                             PSA_KEY_TYPE_NONE,
+                                             data, data_length);
 }
 
 psa_status_t psa_key_derivation_input_key(
     psa_key_derivation_operation_t *operation,
     psa_key_derivation_step_t step,
-    mbedtls_svc_key_id_t key )
+    mbedtls_svc_key_id_t key)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
 
     status = psa_get_and_lock_transparent_key_slot_with_policy(
-                 key, &slot, PSA_KEY_USAGE_DERIVE, operation->alg );
-    if( status != PSA_SUCCESS )
-    {
-        psa_key_derivation_abort( operation );
-        return( status );
+        key, &slot, PSA_KEY_USAGE_DERIVE, operation->alg);
+    if (status != PSA_SUCCESS) {
+        psa_key_derivation_abort(operation);
+        return status;
     }
 
     /* Passing a key object as a SECRET input unlocks the permission
      * to output to a key object. */
-    if( step == PSA_KEY_DERIVATION_INPUT_SECRET )
+    if (step == PSA_KEY_DERIVATION_INPUT_SECRET) {
         operation->can_output_key = 1;
+    }
 
-    status = psa_key_derivation_input_internal( operation,
-                                                step, slot->attr.type,
-                                                slot->key.data,
-                                                slot->key.bytes );
+    status = psa_key_derivation_input_internal(operation,
+                                               step, slot->attr.type,
+                                               slot->key.data,
+                                               slot->key.bytes);
 
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
 
@@ -4824,92 +4825,99 @@
 /****************************************************************/
 
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_ECDH)
-static psa_status_t psa_key_agreement_ecdh( const uint8_t *peer_key,
-                                            size_t peer_key_length,
-                                            const mbedtls_ecp_keypair *our_key,
-                                            uint8_t *shared_secret,
-                                            size_t shared_secret_size,
-                                            size_t *shared_secret_length )
+static psa_status_t psa_key_agreement_ecdh(const uint8_t *peer_key,
+                                           size_t peer_key_length,
+                                           const mbedtls_ecp_keypair *our_key,
+                                           uint8_t *shared_secret,
+                                           size_t shared_secret_size,
+                                           size_t *shared_secret_length)
 {
     mbedtls_ecp_keypair *their_key = NULL;
     mbedtls_ecdh_context ecdh;
     psa_status_t status;
     size_t bits = 0;
-    psa_ecc_family_t curve = mbedtls_ecc_group_to_psa( our_key->grp.id, &bits );
-    mbedtls_ecdh_init( &ecdh );
+    psa_ecc_family_t curve = mbedtls_ecc_group_to_psa(our_key->grp.id, &bits);
+    mbedtls_ecdh_init(&ecdh);
 
     status = mbedtls_psa_ecp_load_representation(
-                 PSA_KEY_TYPE_ECC_PUBLIC_KEY(curve),
-                 bits,
-                 peer_key,
-                 peer_key_length,
-                 &their_key );
-    if( status != PSA_SUCCESS )
+        PSA_KEY_TYPE_ECC_PUBLIC_KEY(curve),
+        bits,
+        peer_key,
+        peer_key_length,
+        &their_key);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     status = mbedtls_to_psa_error(
-        mbedtls_ecdh_get_params( &ecdh, their_key, MBEDTLS_ECDH_THEIRS ) );
-    if( status != PSA_SUCCESS )
+        mbedtls_ecdh_get_params(&ecdh, their_key, MBEDTLS_ECDH_THEIRS));
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
     status = mbedtls_to_psa_error(
-        mbedtls_ecdh_get_params( &ecdh, our_key, MBEDTLS_ECDH_OURS ) );
-    if( status != PSA_SUCCESS )
+        mbedtls_ecdh_get_params(&ecdh, our_key, MBEDTLS_ECDH_OURS));
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     status = mbedtls_to_psa_error(
-        mbedtls_ecdh_calc_secret( &ecdh,
-                                  shared_secret_length,
-                                  shared_secret, shared_secret_size,
-                                  mbedtls_psa_get_random,
-                                  MBEDTLS_PSA_RANDOM_STATE ) );
-    if( status != PSA_SUCCESS )
+        mbedtls_ecdh_calc_secret(&ecdh,
+                                 shared_secret_length,
+                                 shared_secret, shared_secret_size,
+                                 mbedtls_psa_get_random,
+                                 MBEDTLS_PSA_RANDOM_STATE));
+    if (status != PSA_SUCCESS) {
         goto exit;
-    if( PSA_BITS_TO_BYTES( bits ) != *shared_secret_length )
+    }
+    if (PSA_BITS_TO_BYTES(bits) != *shared_secret_length) {
         status = PSA_ERROR_CORRUPTION_DETECTED;
+    }
 
 exit:
-    if( status != PSA_SUCCESS )
-        mbedtls_platform_zeroize( shared_secret, shared_secret_size );
-    mbedtls_ecdh_free( &ecdh );
-    mbedtls_ecp_keypair_free( their_key );
-    mbedtls_free( their_key );
+    if (status != PSA_SUCCESS) {
+        mbedtls_platform_zeroize(shared_secret, shared_secret_size);
+    }
+    mbedtls_ecdh_free(&ecdh);
+    mbedtls_ecp_keypair_free(their_key);
+    mbedtls_free(their_key);
 
-    return( status );
+    return status;
 }
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_ECDH */
 
 #define PSA_KEY_AGREEMENT_MAX_SHARED_SECRET_SIZE MBEDTLS_ECP_MAX_BYTES
 
-static psa_status_t psa_key_agreement_raw_internal( psa_algorithm_t alg,
-                                                    psa_key_slot_t *private_key,
-                                                    const uint8_t *peer_key,
-                                                    size_t peer_key_length,
-                                                    uint8_t *shared_secret,
-                                                    size_t shared_secret_size,
-                                                    size_t *shared_secret_length )
+static psa_status_t psa_key_agreement_raw_internal(psa_algorithm_t alg,
+                                                   psa_key_slot_t *private_key,
+                                                   const uint8_t *peer_key,
+                                                   size_t peer_key_length,
+                                                   uint8_t *shared_secret,
+                                                   size_t shared_secret_size,
+                                                   size_t *shared_secret_length)
 {
-    switch( alg )
-    {
+    switch (alg) {
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_ECDH)
         case PSA_ALG_ECDH:
-            if( ! PSA_KEY_TYPE_IS_ECC_KEY_PAIR( private_key->attr.type ) )
-                return( PSA_ERROR_INVALID_ARGUMENT );
+            if (!PSA_KEY_TYPE_IS_ECC_KEY_PAIR(private_key->attr.type)) {
+                return PSA_ERROR_INVALID_ARGUMENT;
+            }
             mbedtls_ecp_keypair *ecp = NULL;
             psa_status_t status = mbedtls_psa_ecp_load_representation(
-                                      private_key->attr.type,
-                                      private_key->attr.bits,
-                                      private_key->key.data,
-                                      private_key->key.bytes,
-                                      &ecp );
-            if( status != PSA_SUCCESS )
-                return( status );
-            status = psa_key_agreement_ecdh( peer_key, peer_key_length,
-                                             ecp,
-                                             shared_secret, shared_secret_size,
-                                             shared_secret_length );
-            mbedtls_ecp_keypair_free( ecp );
-            mbedtls_free( ecp );
-            return( status );
+                private_key->attr.type,
+                private_key->attr.bits,
+                private_key->key.data,
+                private_key->key.bytes,
+                &ecp);
+            if (status != PSA_SUCCESS) {
+                return status;
+            }
+            status = psa_key_agreement_ecdh(peer_key, peer_key_length,
+                                            ecp,
+                                            shared_secret, shared_secret_size,
+                                            shared_secret_length);
+            mbedtls_ecp_keypair_free(ecp);
+            mbedtls_free(ecp);
+            return status;
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_ECDH */
         default:
             (void) private_key;
@@ -4918,102 +4926,105 @@
             (void) shared_secret;
             (void) shared_secret_size;
             (void) shared_secret_length;
-            return( PSA_ERROR_NOT_SUPPORTED );
+            return PSA_ERROR_NOT_SUPPORTED;
     }
 }
 
 /* Note that if this function fails, you must call psa_key_derivation_abort()
  * to potentially free embedded data structures and wipe confidential data.
  */
-static psa_status_t psa_key_agreement_internal( psa_key_derivation_operation_t *operation,
-                                                psa_key_derivation_step_t step,
-                                                psa_key_slot_t *private_key,
-                                                const uint8_t *peer_key,
-                                                size_t peer_key_length )
+static psa_status_t psa_key_agreement_internal(psa_key_derivation_operation_t *operation,
+                                               psa_key_derivation_step_t step,
+                                               psa_key_slot_t *private_key,
+                                               const uint8_t *peer_key,
+                                               size_t peer_key_length)
 {
     psa_status_t status;
     uint8_t shared_secret[PSA_KEY_AGREEMENT_MAX_SHARED_SECRET_SIZE];
     size_t shared_secret_length = 0;
-    psa_algorithm_t ka_alg = PSA_ALG_KEY_AGREEMENT_GET_BASE( operation->alg );
+    psa_algorithm_t ka_alg = PSA_ALG_KEY_AGREEMENT_GET_BASE(operation->alg);
 
     /* Step 1: run the secret agreement algorithm to generate the shared
      * secret. */
-    status = psa_key_agreement_raw_internal( ka_alg,
-                                             private_key,
-                                             peer_key, peer_key_length,
-                                             shared_secret,
-                                             sizeof( shared_secret ),
-                                             &shared_secret_length );
-    if( status != PSA_SUCCESS )
+    status = psa_key_agreement_raw_internal(ka_alg,
+                                            private_key,
+                                            peer_key, peer_key_length,
+                                            shared_secret,
+                                            sizeof(shared_secret),
+                                            &shared_secret_length);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     /* Step 2: set up the key derivation to generate key material from
      * the shared secret. A shared secret is permitted wherever a key
      * of type DERIVE is permitted. */
-    status = psa_key_derivation_input_internal( operation, step,
-                                                PSA_KEY_TYPE_DERIVE,
-                                                shared_secret,
-                                                shared_secret_length );
+    status = psa_key_derivation_input_internal(operation, step,
+                                               PSA_KEY_TYPE_DERIVE,
+                                               shared_secret,
+                                               shared_secret_length);
 exit:
-    mbedtls_platform_zeroize( shared_secret, shared_secret_length );
-    return( status );
+    mbedtls_platform_zeroize(shared_secret, shared_secret_length);
+    return status;
 }
 
-psa_status_t psa_key_derivation_key_agreement( psa_key_derivation_operation_t *operation,
-                                               psa_key_derivation_step_t step,
-                                               mbedtls_svc_key_id_t private_key,
-                                               const uint8_t *peer_key,
-                                               size_t peer_key_length )
+psa_status_t psa_key_derivation_key_agreement(psa_key_derivation_operation_t *operation,
+                                              psa_key_derivation_step_t step,
+                                              mbedtls_svc_key_id_t private_key,
+                                              const uint8_t *peer_key,
+                                              size_t peer_key_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
 
-    if( ! PSA_ALG_IS_KEY_AGREEMENT( operation->alg ) )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (!PSA_ALG_IS_KEY_AGREEMENT(operation->alg)) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
     status = psa_get_and_lock_transparent_key_slot_with_policy(
-                 private_key, &slot, PSA_KEY_USAGE_DERIVE, operation->alg );
-    if( status != PSA_SUCCESS )
-        return( status );
-    status = psa_key_agreement_internal( operation, step,
-                                         slot,
-                                         peer_key, peer_key_length );
-    if( status != PSA_SUCCESS )
-        psa_key_derivation_abort( operation );
-    else
-    {
+        private_key, &slot, PSA_KEY_USAGE_DERIVE, operation->alg);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
+    status = psa_key_agreement_internal(operation, step,
+                                        slot,
+                                        peer_key, peer_key_length);
+    if (status != PSA_SUCCESS) {
+        psa_key_derivation_abort(operation);
+    } else {
         /* If a private key has been added as SECRET, we allow the derived
          * key material to be used as a key in PSA Crypto. */
-        if( step == PSA_KEY_DERIVATION_INPUT_SECRET )
+        if (step == PSA_KEY_DERIVATION_INPUT_SECRET) {
             operation->can_output_key = 1;
+        }
     }
 
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
-psa_status_t psa_raw_key_agreement( psa_algorithm_t alg,
-                                    mbedtls_svc_key_id_t private_key,
-                                    const uint8_t *peer_key,
-                                    size_t peer_key_length,
-                                    uint8_t *output,
-                                    size_t output_size,
-                                    size_t *output_length )
+psa_status_t psa_raw_key_agreement(psa_algorithm_t alg,
+                                   mbedtls_svc_key_id_t private_key,
+                                   const uint8_t *peer_key,
+                                   size_t peer_key_length,
+                                   uint8_t *output,
+                                   size_t output_size,
+                                   size_t *output_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot = NULL;
 
-    if( ! PSA_ALG_IS_KEY_AGREEMENT( alg ) )
-    {
+    if (!PSA_ALG_IS_KEY_AGREEMENT(alg)) {
         status = PSA_ERROR_INVALID_ARGUMENT;
         goto exit;
     }
     status = psa_get_and_lock_transparent_key_slot_with_policy(
-                 private_key, &slot, PSA_KEY_USAGE_DERIVE, alg );
-    if( status != PSA_SUCCESS )
+        private_key, &slot, PSA_KEY_USAGE_DERIVE, alg);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     /* PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE() is in general an upper bound
      * for the output size. The PSA specification only guarantees that this
@@ -5024,21 +5035,19 @@
      * If FFDH is implemented, PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE() can easily
      * be exact for it as well. */
     size_t expected_length =
-        PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE( slot->attr.type, slot->attr.bits );
-    if( output_size < expected_length )
-    {
+        PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE(slot->attr.type, slot->attr.bits);
+    if (output_size < expected_length) {
         status = PSA_ERROR_BUFFER_TOO_SMALL;
         goto exit;
     }
 
-    status = psa_key_agreement_raw_internal( alg, slot,
-                                             peer_key, peer_key_length,
-                                             output, output_size,
-                                             output_length );
+    status = psa_key_agreement_raw_internal(alg, slot,
+                                            peer_key, peer_key_length,
+                                            output, output_size,
+                                            output_length);
 
 exit:
-    if( status != PSA_SUCCESS )
-    {
+    if (status != PSA_SUCCESS) {
         /* If an error happens and is not handled properly, the output
          * may be used as a key to protect sensitive data. Arrange for such
          * a key to be random, which is likely to result in decryption or
@@ -5046,13 +5055,13 @@
          * some constant data such as zeros, which would result in the data
          * being protected with a reproducible, easily knowable key.
          */
-        psa_generate_random( output, output_size );
+        psa_generate_random(output, output_size);
         *output_length = output_size;
     }
 
-    unlock_status = psa_unlock_key_slot( slot );
+    unlock_status = psa_unlock_key_slot(slot);
 
-    return( ( status == PSA_SUCCESS ) ? unlock_status : status );
+    return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
 
@@ -5063,97 +5072,101 @@
 
 /** Initialize the PSA random generator.
  */
-static void mbedtls_psa_random_init( mbedtls_psa_random_context_t *rng )
+static void mbedtls_psa_random_init(mbedtls_psa_random_context_t *rng)
 {
 #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
-    memset( rng, 0, sizeof( *rng ) );
+    memset(rng, 0, sizeof(*rng));
 #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
 
     /* Set default configuration if
      * mbedtls_psa_crypto_configure_entropy_sources() hasn't been called. */
-    if( rng->entropy_init == NULL )
+    if (rng->entropy_init == NULL) {
         rng->entropy_init = mbedtls_entropy_init;
-    if( rng->entropy_free == NULL )
+    }
+    if (rng->entropy_free == NULL) {
         rng->entropy_free = mbedtls_entropy_free;
+    }
 
-    rng->entropy_init( &rng->entropy );
+    rng->entropy_init(&rng->entropy);
 #if defined(MBEDTLS_PSA_INJECT_ENTROPY) && \
     defined(MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES)
     /* The PSA entropy injection feature depends on using NV seed as an entropy
      * source. Add NV seed as an entropy source for PSA entropy injection. */
-    mbedtls_entropy_add_source( &rng->entropy,
-                                mbedtls_nv_seed_poll, NULL,
-                                MBEDTLS_ENTROPY_BLOCK_SIZE,
-                                MBEDTLS_ENTROPY_SOURCE_STRONG );
+    mbedtls_entropy_add_source(&rng->entropy,
+                               mbedtls_nv_seed_poll, NULL,
+                               MBEDTLS_ENTROPY_BLOCK_SIZE,
+                               MBEDTLS_ENTROPY_SOURCE_STRONG);
 #endif
 
-    mbedtls_psa_drbg_init( MBEDTLS_PSA_RANDOM_STATE );
+    mbedtls_psa_drbg_init(MBEDTLS_PSA_RANDOM_STATE);
 #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
 }
 
 /** Deinitialize the PSA random generator.
  */
-static void mbedtls_psa_random_free( mbedtls_psa_random_context_t *rng )
+static void mbedtls_psa_random_free(mbedtls_psa_random_context_t *rng)
 {
 #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
-    memset( rng, 0, sizeof( *rng ) );
+    memset(rng, 0, sizeof(*rng));
 #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
-    mbedtls_psa_drbg_free( MBEDTLS_PSA_RANDOM_STATE );
-    rng->entropy_free( &rng->entropy );
+    mbedtls_psa_drbg_free(MBEDTLS_PSA_RANDOM_STATE);
+    rng->entropy_free(&rng->entropy);
 #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
 }
 
 /** Seed the PSA random generator.
  */
-static psa_status_t mbedtls_psa_random_seed( mbedtls_psa_random_context_t *rng )
+static psa_status_t mbedtls_psa_random_seed(mbedtls_psa_random_context_t *rng)
 {
 #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
     /* Do nothing: the external RNG seeds itself. */
     (void) rng;
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
     const unsigned char drbg_seed[] = "PSA";
-    int ret = mbedtls_psa_drbg_seed( &rng->entropy,
-                                     drbg_seed, sizeof( drbg_seed ) - 1 );
-    return mbedtls_to_psa_error( ret );
+    int ret = mbedtls_psa_drbg_seed(&rng->entropy,
+                                    drbg_seed, sizeof(drbg_seed) - 1);
+    return mbedtls_to_psa_error(ret);
 #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
 }
 
-psa_status_t psa_generate_random( uint8_t *output,
-                                  size_t output_size )
+psa_status_t psa_generate_random(uint8_t *output,
+                                 size_t output_size)
 {
     GUARD_MODULE_INITIALIZED;
 
 #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
 
     size_t output_length = 0;
-    psa_status_t status = mbedtls_psa_external_get_random( &global_data.rng,
-                                                           output, output_size,
-                                                           &output_length );
-    if( status != PSA_SUCCESS )
-        return( status );
+    psa_status_t status = mbedtls_psa_external_get_random(&global_data.rng,
+                                                          output, output_size,
+                                                          &output_length);
+    if (status != PSA_SUCCESS) {
+        return status;
+    }
     /* Breaking up a request into smaller chunks is currently not supported
      * for the external RNG interface. */
-    if( output_length != output_size )
-        return( PSA_ERROR_INSUFFICIENT_ENTROPY );
-    return( PSA_SUCCESS );
+    if (output_length != output_size) {
+        return PSA_ERROR_INSUFFICIENT_ENTROPY;
+    }
+    return PSA_SUCCESS;
 
 #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
 
-    while( output_size > 0 )
-    {
+    while (output_size > 0) {
         size_t request_size =
-            ( output_size > MBEDTLS_PSA_RANDOM_MAX_REQUEST ?
-              MBEDTLS_PSA_RANDOM_MAX_REQUEST :
-              output_size );
-        int ret = mbedtls_psa_get_random( MBEDTLS_PSA_RANDOM_STATE,
-                                          output, request_size );
-        if( ret != 0 )
-            return( mbedtls_to_psa_error( ret ) );
+            (output_size > MBEDTLS_PSA_RANDOM_MAX_REQUEST ?
+             MBEDTLS_PSA_RANDOM_MAX_REQUEST :
+             output_size);
+        int ret = mbedtls_psa_get_random(MBEDTLS_PSA_RANDOM_STATE,
+                                         output, request_size);
+        if (ret != 0) {
+            return mbedtls_to_psa_error(ret);
+        }
         output_size -= request_size;
         output += request_size;
     }
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
 }
 
@@ -5170,10 +5183,10 @@
  * classic API, psa_crypto_random_impl.h defines `mbedtls_psa_get_random`
  * as a constant function pointer to `mbedtls_xxx_drbg_random`.
  */
-#if defined (MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
-int mbedtls_psa_get_random( void *p_rng,
-                            unsigned char *output,
-                            size_t output_size )
+#if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
+int mbedtls_psa_get_random(void *p_rng,
+                           unsigned char *output,
+                           size_t output_size)
 {
     /* This function takes a pointer to the RNG state because that's what
      * classic mbedtls functions using an RNG expect. The PSA RNG manages
@@ -5181,29 +5194,32 @@
      * So we just ignore the state parameter, and in practice we'll pass
      * NULL. */
     (void) p_rng;
-    psa_status_t status = psa_generate_random( output, output_size );
-    if( status == PSA_SUCCESS )
-        return( 0 );
-    else
-        return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
+    psa_status_t status = psa_generate_random(output, output_size);
+    if (status == PSA_SUCCESS) {
+        return 0;
+    } else {
+        return MBEDTLS_ERR_ENTROPY_SOURCE_FAILED;
+    }
 }
 #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
 
 #if defined(MBEDTLS_PSA_INJECT_ENTROPY)
 #include "mbedtls/entropy_poll.h"
 
-psa_status_t mbedtls_psa_inject_entropy( const uint8_t *seed,
-                                         size_t seed_size )
+psa_status_t mbedtls_psa_inject_entropy(const uint8_t *seed,
+                                        size_t seed_size)
 {
-    if( global_data.initialized )
-        return( PSA_ERROR_NOT_PERMITTED );
+    if (global_data.initialized) {
+        return PSA_ERROR_NOT_PERMITTED;
+    }
 
-    if( ( ( seed_size < MBEDTLS_ENTROPY_MIN_PLATFORM ) ||
-          ( seed_size < MBEDTLS_ENTROPY_BLOCK_SIZE ) ) ||
-          ( seed_size > MBEDTLS_ENTROPY_MAX_SEED_SIZE ) )
-            return( PSA_ERROR_INVALID_ARGUMENT );
+    if (((seed_size < MBEDTLS_ENTROPY_MIN_PLATFORM) ||
+         (seed_size < MBEDTLS_ENTROPY_BLOCK_SIZE)) ||
+        (seed_size > MBEDTLS_ENTROPY_MAX_SEED_SIZE)) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
-    return( mbedtls_psa_storage_inject_entropy( seed, seed_size ) );
+    return mbedtls_psa_storage_inject_entropy(seed, seed_size);
 }
 #endif /* MBEDTLS_PSA_INJECT_ENTROPY */
 
@@ -5221,103 +5237,97 @@
  *         the two is not supported.
  */
 static psa_status_t psa_validate_key_type_and_size_for_key_generation(
-    psa_key_type_t type, size_t bits )
+    psa_key_type_t type, size_t bits)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
-    if( key_type_is_raw_bytes( type ) )
-    {
-        status = validate_unstructured_key_bit_size( type, bits );
-        if( status != PSA_SUCCESS )
-            return( status );
-    }
-    else
+    if (key_type_is_raw_bytes(type)) {
+        status = validate_unstructured_key_bit_size(type, bits);
+        if (status != PSA_SUCCESS) {
+            return status;
+        }
+    } else
 #if defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR)
-    if( PSA_KEY_TYPE_IS_RSA( type ) && PSA_KEY_TYPE_IS_KEY_PAIR( type ) )
-    {
-        if( bits > PSA_VENDOR_RSA_MAX_KEY_BITS )
-            return( PSA_ERROR_NOT_SUPPORTED );
+    if (PSA_KEY_TYPE_IS_RSA(type) && PSA_KEY_TYPE_IS_KEY_PAIR(type)) {
+        if (bits > PSA_VENDOR_RSA_MAX_KEY_BITS) {
+            return PSA_ERROR_NOT_SUPPORTED;
+        }
 
         /* Accept only byte-aligned keys, for the same reasons as
          * in psa_import_rsa_key(). */
-        if( bits % 8 != 0 )
-            return( PSA_ERROR_NOT_SUPPORTED );
-    }
-    else
+        if (bits % 8 != 0) {
+            return PSA_ERROR_NOT_SUPPORTED;
+        }
+    } else
 #endif /* defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR) */
 
 #if defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR)
-    if( PSA_KEY_TYPE_IS_ECC( type ) && PSA_KEY_TYPE_IS_KEY_PAIR( type ) )
-    {
+    if (PSA_KEY_TYPE_IS_ECC(type) && PSA_KEY_TYPE_IS_KEY_PAIR(type)) {
         /* To avoid empty block, return successfully here. */
-        return( PSA_SUCCESS );
-    }
-    else
+        return PSA_SUCCESS;
+    } else
 #endif /* defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR) */
     {
-        return( PSA_ERROR_NOT_SUPPORTED );
+        return PSA_ERROR_NOT_SUPPORTED;
     }
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
 psa_status_t psa_generate_key_internal(
     const psa_key_attributes_t *attributes,
-    uint8_t *key_buffer, size_t key_buffer_size, size_t *key_buffer_length )
+    uint8_t *key_buffer, size_t key_buffer_size, size_t *key_buffer_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_type_t type = attributes->core.type;
 
-    if( ( attributes->domain_parameters == NULL ) &&
-        ( attributes->domain_parameters_size != 0 ) )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if ((attributes->domain_parameters == NULL) &&
+        (attributes->domain_parameters_size != 0)) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
-    if( key_type_is_raw_bytes( type ) )
-    {
-        status = psa_generate_random( key_buffer, key_buffer_size );
-        if( status != PSA_SUCCESS )
-            return( status );
+    if (key_type_is_raw_bytes(type)) {
+        status = psa_generate_random(key_buffer, key_buffer_size);
+        if (status != PSA_SUCCESS) {
+            return status;
+        }
 
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES)
-        if( type == PSA_KEY_TYPE_DES )
-            psa_des_set_key_parity( key_buffer, key_buffer_size );
+        if (type == PSA_KEY_TYPE_DES) {
+            psa_des_set_key_parity(key_buffer, key_buffer_size);
+        }
 #endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES */
-    }
-    else
+    } else
 
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR) && \
     defined(MBEDTLS_GENPRIME)
-    if ( type == PSA_KEY_TYPE_RSA_KEY_PAIR )
-    {
-        return( mbedtls_psa_rsa_generate_key( attributes,
-                                              key_buffer,
-                                              key_buffer_size,
-                                              key_buffer_length ) );
-    }
-    else
+    if (type == PSA_KEY_TYPE_RSA_KEY_PAIR) {
+        return mbedtls_psa_rsa_generate_key(attributes,
+                                            key_buffer,
+                                            key_buffer_size,
+                                            key_buffer_length);
+    } else
 #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR)
         * defined(MBEDTLS_GENPRIME) */
 
 #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR)
-    if ( PSA_KEY_TYPE_IS_ECC( type ) && PSA_KEY_TYPE_IS_KEY_PAIR( type ) )
-    {
-        return( mbedtls_psa_ecp_generate_key( attributes,
-                                              key_buffer,
-                                              key_buffer_size,
-                                              key_buffer_length ) );
-    }
-    else
+    if (PSA_KEY_TYPE_IS_ECC(type) && PSA_KEY_TYPE_IS_KEY_PAIR(type)) {
+        return mbedtls_psa_ecp_generate_key(attributes,
+                                            key_buffer,
+                                            key_buffer_size,
+                                            key_buffer_length);
+    } else
 #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR) */
     {
-        (void)key_buffer_length;
-        return( PSA_ERROR_NOT_SUPPORTED );
+        (void) key_buffer_length;
+        return PSA_ERROR_NOT_SUPPORTED;
     }
 
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 
-psa_status_t psa_generate_key( const psa_key_attributes_t *attributes,
-                               mbedtls_svc_key_id_t *key )
+psa_status_t psa_generate_key(const psa_key_attributes_t *attributes,
+                              mbedtls_svc_key_id_t *key)
 {
     psa_status_t status;
     psa_key_slot_t *slot = NULL;
@@ -5328,62 +5338,67 @@
 
     /* Reject any attempt to create a zero-length key so that we don't
      * risk tripping up later, e.g. on a malloc(0) that returns NULL. */
-    if( psa_get_key_bits( attributes ) == 0 )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (psa_get_key_bits(attributes) == 0) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
     /* Reject any attempt to create a public key. */
-    if( PSA_KEY_TYPE_IS_PUBLIC_KEY(attributes->core.type) )
-        return( PSA_ERROR_INVALID_ARGUMENT );
+    if (PSA_KEY_TYPE_IS_PUBLIC_KEY(attributes->core.type)) {
+        return PSA_ERROR_INVALID_ARGUMENT;
+    }
 
-    status = psa_start_key_creation( PSA_KEY_CREATION_GENERATE, attributes,
-                                     &slot, &driver );
-    if( status != PSA_SUCCESS )
+    status = psa_start_key_creation(PSA_KEY_CREATION_GENERATE, attributes,
+                                    &slot, &driver);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     /* In the case of a transparent key or an opaque key stored in local
      * storage (thus not in the case of generating a key in a secure element
      * or cryptoprocessor with storage), we have to allocate a buffer to
      * hold the generated key material. */
-    if( slot->key.data == NULL )
-    {
-        if ( PSA_KEY_LIFETIME_GET_LOCATION( attributes->core.lifetime ) ==
-             PSA_KEY_LOCATION_LOCAL_STORAGE )
-        {
+    if (slot->key.data == NULL) {
+        if (PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime) ==
+            PSA_KEY_LOCATION_LOCAL_STORAGE) {
             status = psa_validate_key_type_and_size_for_key_generation(
-                attributes->core.type, attributes->core.bits );
-            if( status != PSA_SUCCESS )
+                attributes->core.type, attributes->core.bits);
+            if (status != PSA_SUCCESS) {
                 goto exit;
+            }
 
             key_buffer_size = PSA_EXPORT_KEY_OUTPUT_SIZE(
-                                  attributes->core.type,
-                                  attributes->core.bits );
-        }
-        else
-        {
+                attributes->core.type,
+                attributes->core.bits);
+        } else {
             status = psa_driver_wrapper_get_key_buffer_size(
-                         attributes, &key_buffer_size );
-            if( status != PSA_SUCCESS )
+                attributes, &key_buffer_size);
+            if (status != PSA_SUCCESS) {
                 goto exit;
+            }
         }
 
-        status = psa_allocate_buffer_to_slot( slot, key_buffer_size );
-        if( status != PSA_SUCCESS )
+        status = psa_allocate_buffer_to_slot(slot, key_buffer_size);
+        if (status != PSA_SUCCESS) {
             goto exit;
+        }
     }
 
-    status = psa_driver_wrapper_generate_key( attributes,
-        slot->key.data, slot->key.bytes, &slot->key.bytes );
+    status = psa_driver_wrapper_generate_key(attributes,
+                                             slot->key.data, slot->key.bytes, &slot->key.bytes);
 
-    if( status != PSA_SUCCESS )
-        psa_remove_key_data_from_memory( slot );
+    if (status != PSA_SUCCESS) {
+        psa_remove_key_data_from_memory(slot);
+    }
 
 exit:
-    if( status == PSA_SUCCESS )
-        status = psa_finish_key_creation( slot, driver, key );
-    if( status != PSA_SUCCESS )
-        psa_fail_key_creation( slot, driver );
+    if (status == PSA_SUCCESS) {
+        status = psa_finish_key_creation(slot, driver, key);
+    }
+    if (status != PSA_SUCCESS) {
+        psa_fail_key_creation(slot, driver);
+    }
 
-    return( status );
+    return status;
 }
 
 /****************************************************************/
@@ -5392,31 +5407,31 @@
 
 #if !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
 psa_status_t mbedtls_psa_crypto_configure_entropy_sources(
-    void (* entropy_init )( mbedtls_entropy_context *ctx ),
-    void (* entropy_free )( mbedtls_entropy_context *ctx ) )
+    void (* entropy_init)(mbedtls_entropy_context *ctx),
+    void (* entropy_free)(mbedtls_entropy_context *ctx))
 {
-    if( global_data.rng_state != RNG_NOT_INITIALIZED )
-        return( PSA_ERROR_BAD_STATE );
+    if (global_data.rng_state != RNG_NOT_INITIALIZED) {
+        return PSA_ERROR_BAD_STATE;
+    }
     global_data.rng.entropy_init = entropy_init;
     global_data.rng.entropy_free = entropy_free;
-    return( PSA_SUCCESS );
+    return PSA_SUCCESS;
 }
 #endif /* !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) */
 
-void mbedtls_psa_crypto_free( void )
+void mbedtls_psa_crypto_free(void)
 {
-    psa_wipe_all_key_slots( );
-    if( global_data.rng_state != RNG_NOT_INITIALIZED )
-    {
-        mbedtls_psa_random_free( &global_data.rng );
+    psa_wipe_all_key_slots();
+    if (global_data.rng_state != RNG_NOT_INITIALIZED) {
+        mbedtls_psa_random_free(&global_data.rng);
     }
     /* Wipe all remaining data, including configuration.
      * In particular, this sets all state indicator to the value
      * indicating "uninitialized". */
-    mbedtls_platform_zeroize( &global_data, sizeof( global_data ) );
+    mbedtls_platform_zeroize(&global_data, sizeof(global_data));
 
     /* Terminate drivers */
-    psa_driver_wrapper_free( );
+    psa_driver_wrapper_free();
 }
 
 #if defined(PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS)
@@ -5427,60 +5442,61 @@
  * fails.
  */
 static psa_status_t psa_crypto_recover_transaction(
-    const psa_crypto_transaction_t *transaction )
+    const psa_crypto_transaction_t *transaction)
 {
-    switch( transaction->unknown.type )
-    {
+    switch (transaction->unknown.type) {
         case PSA_CRYPTO_TRANSACTION_CREATE_KEY:
         case PSA_CRYPTO_TRANSACTION_DESTROY_KEY:
-            /* TODO - fall through to the failure case until this
-             * is implemented.
-             * https://github.com/ARMmbed/mbed-crypto/issues/218
-             */
+        /* TODO - fall through to the failure case until this
+         * is implemented.
+         * https://github.com/ARMmbed/mbed-crypto/issues/218
+         */
         default:
             /* We found an unsupported transaction in the storage.
              * We don't know what state the storage is in. Give up. */
-            return( PSA_ERROR_DATA_INVALID );
+            return PSA_ERROR_DATA_INVALID;
     }
 }
 #endif /* PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS */
 
-psa_status_t psa_crypto_init( void )
+psa_status_t psa_crypto_init(void)
 {
     psa_status_t status;
 
     /* Double initialization is explicitly allowed. */
-    if( global_data.initialized != 0 )
-        return( PSA_SUCCESS );
+    if (global_data.initialized != 0) {
+        return PSA_SUCCESS;
+    }
 
     /* Initialize and seed the random generator. */
-    mbedtls_psa_random_init( &global_data.rng );
+    mbedtls_psa_random_init(&global_data.rng);
     global_data.rng_state = RNG_INITIALIZED;
-    status = mbedtls_psa_random_seed( &global_data.rng );
-    if( status != PSA_SUCCESS )
+    status = mbedtls_psa_random_seed(&global_data.rng);
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
     global_data.rng_state = RNG_SEEDED;
 
-    status = psa_initialize_key_slots( );
-    if( status != PSA_SUCCESS )
+    status = psa_initialize_key_slots();
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
     /* Init drivers */
-    status = psa_driver_wrapper_init( );
-    if( status != PSA_SUCCESS )
+    status = psa_driver_wrapper_init();
+    if (status != PSA_SUCCESS) {
         goto exit;
+    }
 
 #if defined(PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS)
-    status = psa_crypto_load_transaction( );
-    if( status == PSA_SUCCESS )
-    {
-        status = psa_crypto_recover_transaction( &psa_crypto_transaction );
-        if( status != PSA_SUCCESS )
+    status = psa_crypto_load_transaction();
+    if (status == PSA_SUCCESS) {
+        status = psa_crypto_recover_transaction(&psa_crypto_transaction);
+        if (status != PSA_SUCCESS) {
             goto exit;
-        status = psa_crypto_stop_transaction( );
-    }
-    else if( status == PSA_ERROR_DOES_NOT_EXIST )
-    {
+        }
+        status = psa_crypto_stop_transaction();
+    } else if (status == PSA_ERROR_DOES_NOT_EXIST) {
         /* There's no transaction to complete. It's all good. */
         status = PSA_SUCCESS;
     }
@@ -5490,9 +5506,10 @@
     global_data.initialized = 1;
 
 exit:
-    if( status != PSA_SUCCESS )
-        mbedtls_psa_crypto_free( );
-    return( status );
+    if (status != PSA_SUCCESS) {
+        mbedtls_psa_crypto_free();
+    }
+    return status;
 }
 
 #endif /* MBEDTLS_PSA_CRYPTO_C */