Add tests for "return plaintext data faster on unpadded decryption"
diff --git a/tests/suites/test_suite_cipher.gcm.data b/tests/suites/test_suite_cipher.gcm.data
index b0ccbe8..0efed58 100644
--- a/tests/suites/test_suite_cipher.gcm.data
+++ b/tests/suites/test_suite_cipher.gcm.data
@@ -60,35 +60,35 @@
 
 AES 128 GCM Encrypt and decrypt 0 bytes in multiple parts
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:0:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:0:0:-1:0:0:0:0
 
 AES 128 GCM Encrypt and decrypt 1 bytes in multiple parts 1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:1:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:1:0:-1:1:0:1:0
 
 AES 128 GCM Encrypt and decrypt 1 bytes in multiple parts 2
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:0:1
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:0:1:-1:0:1:0:1
 
 AES 128 GCM Encrypt and decrypt 16 bytes in multiple parts 1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:16:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:16:0:-1:16:0:16:0
 
 AES 128 GCM Encrypt and decrypt 16 bytes in multiple parts 2
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:0:16
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:0:16:-1:0:16:0:16
 
 AES 128 GCM Encrypt and decrypt 22 bytes in multiple parts 1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:16:6
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:16:6:-1:16:6:16:6
 
 AES 128 GCM Encrypt and decrypt 22 bytes in multiple parts 2
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:0:22
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:0:22:-1:0:22:0:22
 
 AES 128 GCM Encrypt and decrypt 32 bytes in multiple parts 1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:16:16
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_128_GCM:128:16:16:-1:16:16:16:16
 
 AES 128 GCM Decrypt test vector #1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
@@ -188,35 +188,35 @@
 
 AES 192 GCM Encrypt and decrypt 0 bytes in multiple parts
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:0:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:0:0:-1:0:0:0:0
 
 AES 192 GCM Encrypt and decrypt 1 bytes in multiple parts 1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:1:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:1:0:-1:1:0:1:0
 
 AES 192 GCM Encrypt and decrypt 1 bytes in multiple parts 2
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:0:1
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:0:1:-1:0:1:0:1
 
 AES 192 GCM Encrypt and decrypt 16 bytes in multiple parts 1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:16:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:16:0:-1:16:0:16:0
 
 AES 192 GCM Encrypt and decrypt 16 bytes in multiple parts 2
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:0:16
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:0:16:-1:0:16:0:16
 
 AES 192 GCM Encrypt and decrypt 22 bytes in multiple parts 1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:16:6
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:16:6:-1:16:6:16:6
 
 AES 192 GCM Encrypt and decrypt 22 bytes in multiple parts 2
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:0:22
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:0:22:-1:0:22:0:22
 
 AES 192 GCM Encrypt and decrypt 32 bytes in multiple parts 1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:16:16
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_192_GCM:192:16:16:-1:16:16:16:16
 
 AES 192 GCM Decrypt test vector #1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
@@ -304,35 +304,35 @@
 
 AES 256 GCM Encrypt and decrypt 0 bytes in multiple parts
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:0:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:0:0:-1:0:0:0:0
 
 AES 256 GCM Encrypt and decrypt 1 bytes in multiple parts 1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:1:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:1:0:-1:1:0:1:0
 
 AES 256 GCM Encrypt and decrypt 1 bytes in multiple parts 2
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:0:1
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:0:1:-1:0:1:0:1
 
 AES 256 GCM Encrypt and decrypt 16 bytes in multiple parts 1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:16:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:16:0:-1:16:0:16:0
 
 AES 256 GCM Encrypt and decrypt 16 bytes in multiple parts 2
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:0:16
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:0:16:-1:0:16:0:16
 
 AES 256 GCM Encrypt and decrypt 22 bytes in multiple parts 1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:16:6
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:16:6:-1:16:6:16:6
 
 AES 256 GCM Encrypt and decrypt 22 bytes in multiple parts 2
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:0:22
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:0:22:-1:0:22:0:22
 
 AES 256 GCM Encrypt and decrypt 32 bytes in multiple parts 1
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:16:16
+enc_dec_buf_multipart:MBEDTLS_CIPHER_AES_256_GCM:256:16:16:-1:16:16:16:16
 
 AES 128 GCM Decrypt test vector #0
 depends_on:MBEDTLS_AES_C:MBEDTLS_GCM_C
@@ -428,35 +428,35 @@
 
 CAMELLIA 128 GCM Encrypt and decrypt 0 bytes in multiple parts
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:0:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:0:0:-1:0:0:0:0
 
 CAMELLIA 128 GCM Encrypt and decrypt 1 bytes in multiple parts 1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:1:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:1:0:-1:1:0:1:0
 
 CAMELLIA 128 GCM Encrypt and decrypt 1 bytes in multiple parts 2
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:0:1
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:0:1:-1:0:1:0:1
 
 CAMELLIA 128 GCM Encrypt and decrypt 16 bytes in multiple parts 1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:16:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:16:0:-1:16:0:16:0
 
 CAMELLIA 128 GCM Encrypt and decrypt 16 bytes in multiple parts 2
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:0:16
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:0:16:-1:0:16:0:16
 
 CAMELLIA 128 GCM Encrypt and decrypt 22 bytes in multiple parts 1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:16:6
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:16:6:-1:16:6:16:6
 
 CAMELLIA 128 GCM Encrypt and decrypt 22 bytes in multiple parts 2
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:0:22
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:0:22:-1:0:22:0:22
 
 CAMELLIA 128 GCM Encrypt and decrypt 32 bytes in multiple parts 1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:16:16
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_128_GCM:128:16:16:-1:16:16:16:16
 
 CAMELLIA 128 GCM Decrypt test vector #1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
@@ -540,35 +540,35 @@
 
 CAMELLIA 192 GCM Encrypt and decrypt 0 bytes in multiple parts
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:0:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:0:0:-1:0:0:0:0
 
 CAMELLIA 192 GCM Encrypt and decrypt 1 bytes in multiple parts 1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:1:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:1:0:-1:1:0:1:0
 
 CAMELLIA 192 GCM Encrypt and decrypt 1 bytes in multiple parts 2
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:0:1
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:0:1:-1:0:1:0:1
 
 CAMELLIA 192 GCM Encrypt and decrypt 16 bytes in multiple parts 1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:16:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:16:0:-1:16:0:16:0
 
 CAMELLIA 192 GCM Encrypt and decrypt 16 bytes in multiple parts 2
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:0:16
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:0:16:-1:0:16:0:16
 
 CAMELLIA 192 GCM Encrypt and decrypt 22 bytes in multiple parts 1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:16:6
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:16:6:-1:16:6:16:6
 
 CAMELLIA 192 GCM Encrypt and decrypt 22 bytes in multiple parts 2
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:0:22
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:0:22:-1:0:22:0:22
 
 CAMELLIA 192 GCM Encrypt and decrypt 32 bytes in multiple parts 1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:16:16
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_192_GCM:192:16:16:-1:16:16:16:16
 
 CAMELLIA 192 GCM Decrypt test vector #1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
@@ -652,35 +652,35 @@
 
 CAMELLIA 256 GCM Encrypt and decrypt 0 bytes in multiple parts
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:0:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:0:0:-1:0:0:0:0
 
 CAMELLIA 256 GCM Encrypt and decrypt 1 bytes in multiple parts 1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:1:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:1:0:-1:1:0:1:0
 
 CAMELLIA 256 GCM Encrypt and decrypt 1 bytes in multiple parts 2
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:0:1
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:0:1:-1:0:1:0:1
 
 CAMELLIA 256 GCM Encrypt and decrypt 16 bytes in multiple parts 1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:16:0
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:16:0:-1:16:0:16:0
 
 CAMELLIA 256 GCM Encrypt and decrypt 16 bytes in multiple parts 2
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:0:16
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:0:16:-1:0:16:0:16
 
 CAMELLIA 256 GCM Encrypt and decrypt 22 bytes in multiple parts 1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:16:6
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:16:6:-1:16:6:16:6
 
 CAMELLIA 256 GCM Encrypt and decrypt 22 bytes in multiple parts 2
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:0:22
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:0:22:-1:0:22:0:22
 
 CAMELLIA 256 GCM Encrypt and decrypt 32 bytes in multiple parts 1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C
-enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:16:16
+enc_dec_buf_multipart:MBEDTLS_CIPHER_CAMELLIA_256_GCM:256:16:16:-1:16:16:16:16
 
 CAMELLIA 256 GCM Decrypt test vector #1
 depends_on:MBEDTLS_CAMELLIA_C:MBEDTLS_GCM_C