--- /dev/null
+/*\r
+ * NIST SP800-38D compliant GCM implementation\r
+ *\r
+ * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved\r
+ * SPDX-License-Identifier: Apache-2.0\r
+ *\r
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may\r
+ * not use this file except in compliance with the License.\r
+ * You may obtain a copy of the License at\r
+ *\r
+ * http://www.apache.org/licenses/LICENSE-2.0\r
+ *\r
+ * Unless required by applicable law or agreed to in writing, software\r
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT\r
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ * See the License for the specific language governing permissions and\r
+ * limitations under the License.\r
+ *\r
+ * This file is part of mbed TLS (https://tls.mbed.org)\r
+ */\r
+\r
+/*\r
+ * http://csrc.nist.gov/publications/nistpubs/800-38D/SP-800-38D.pdf\r
+ *\r
+ * See also:\r
+ * [MGV] http://csrc.nist.gov/groups/ST/toolkit/BCM/documents/proposedmodes/gcm/gcm-revised-spec.pdf\r
+ *\r
+ * We use the algorithm described as Shoup's method with 4-bit tables in\r
+ * [MGV] 4.1, pp. 12-13, to enhance speed without using too much memory.\r
+ */\r
+\r
+#if !defined(MBEDTLS_CONFIG_FILE)\r
+#include "mbedtls/config.h"\r
+#else\r
+#include MBEDTLS_CONFIG_FILE\r
+#endif\r
+\r
+#if defined(MBEDTLS_GCM_C)\r
+\r
+#include "mbedtls/gcm.h"\r
+#include "mbedtls/platform_util.h"\r
+\r
+#include <string.h>\r
+\r
+#if defined(MBEDTLS_AESNI_C)\r
+#include "mbedtls/aesni.h"\r
+#endif\r
+\r
+#if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)\r
+#include "mbedtls/aes.h"\r
+#include "mbedtls/platform.h"\r
+#if !defined(MBEDTLS_PLATFORM_C)\r
+#include <stdio.h>\r
+#define mbedtls_printf printf\r
+#endif /* MBEDTLS_PLATFORM_C */\r
+#endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */\r
+\r
+#if !defined(MBEDTLS_GCM_ALT)\r
+\r
+/* Parameter validation macros */\r
+#define GCM_VALIDATE_RET( cond ) \\r
+ MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_GCM_BAD_INPUT )\r
+#define GCM_VALIDATE( cond ) \\r
+ MBEDTLS_INTERNAL_VALIDATE( cond )\r
+\r
+/*\r
+ * 32-bit integer manipulation macros (big endian)\r
+ */\r
+#ifndef GET_UINT32_BE\r
+#define GET_UINT32_BE(n,b,i) \\r
+{ \\r
+ (n) = ( (uint32_t) (b)[(i) ] << 24 ) \\r
+ | ( (uint32_t) (b)[(i) + 1] << 16 ) \\r
+ | ( (uint32_t) (b)[(i) + 2] << 8 ) \\r
+ | ( (uint32_t) (b)[(i) + 3] ); \\r
+}\r
+#endif\r
+\r
+#ifndef PUT_UINT32_BE\r
+#define PUT_UINT32_BE(n,b,i) \\r
+{ \\r
+ (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \\r
+ (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \\r
+ (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \\r
+ (b)[(i) + 3] = (unsigned char) ( (n) ); \\r
+}\r
+#endif\r
+\r
+/*\r
+ * Initialize a context\r
+ */\r
+void mbedtls_gcm_init( mbedtls_gcm_context *ctx )\r
+{\r
+ GCM_VALIDATE( ctx != NULL );\r
+ memset( ctx, 0, sizeof( mbedtls_gcm_context ) );\r
+}\r
+\r
+/*\r
+ * Precompute small multiples of H, that is set\r
+ * HH[i] || HL[i] = H times i,\r
+ * where i is seen as a field element as in [MGV], ie high-order bits\r
+ * correspond to low powers of P. The result is stored in the same way, that\r
+ * is the high-order bit of HH corresponds to P^0 and the low-order bit of HL\r
+ * corresponds to P^127.\r
+ */\r
+static int gcm_gen_table( mbedtls_gcm_context *ctx )\r
+{\r
+ int ret, i, j;\r
+ uint64_t hi, lo;\r
+ uint64_t vl, vh;\r
+ unsigned char h[16];\r
+ size_t olen = 0;\r
+\r
+ memset( h, 0, 16 );\r
+ if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, h, 16, h, &olen ) ) != 0 )\r
+ return( ret );\r
+\r
+ /* pack h as two 64-bits ints, big-endian */\r
+ GET_UINT32_BE( hi, h, 0 );\r
+ GET_UINT32_BE( lo, h, 4 );\r
+ vh = (uint64_t) hi << 32 | lo;\r
+\r
+ GET_UINT32_BE( hi, h, 8 );\r
+ GET_UINT32_BE( lo, h, 12 );\r
+ vl = (uint64_t) hi << 32 | lo;\r
+\r
+ /* 8 = 1000 corresponds to 1 in GF(2^128) */\r
+ ctx->HL[8] = vl;\r
+ ctx->HH[8] = vh;\r
+\r
+#if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)\r
+ /* With CLMUL support, we need only h, not the rest of the table */\r
+ if( mbedtls_aesni_has_support( MBEDTLS_AESNI_CLMUL ) )\r
+ return( 0 );\r
+#endif\r
+\r
+ /* 0 corresponds to 0 in GF(2^128) */\r
+ ctx->HH[0] = 0;\r
+ ctx->HL[0] = 0;\r
+\r
+ for( i = 4; i > 0; i >>= 1 )\r
+ {\r
+ uint32_t T = ( vl & 1 ) * 0xe1000000U;\r
+ vl = ( vh << 63 ) | ( vl >> 1 );\r
+ vh = ( vh >> 1 ) ^ ( (uint64_t) T << 32);\r
+\r
+ ctx->HL[i] = vl;\r
+ ctx->HH[i] = vh;\r
+ }\r
+\r
+ for( i = 2; i <= 8; i *= 2 )\r
+ {\r
+ uint64_t *HiL = ctx->HL + i, *HiH = ctx->HH + i;\r
+ vh = *HiH;\r
+ vl = *HiL;\r
+ for( j = 1; j < i; j++ )\r
+ {\r
+ HiH[j] = vh ^ ctx->HH[j];\r
+ HiL[j] = vl ^ ctx->HL[j];\r
+ }\r
+ }\r
+\r
+ return( 0 );\r
+}\r
+\r
+int mbedtls_gcm_setkey( mbedtls_gcm_context *ctx,\r
+ mbedtls_cipher_id_t cipher,\r
+ const unsigned char *key,\r
+ unsigned int keybits )\r
+{\r
+ int ret;\r
+ const mbedtls_cipher_info_t *cipher_info;\r
+\r
+ GCM_VALIDATE_RET( ctx != NULL );\r
+ GCM_VALIDATE_RET( key != NULL );\r
+ GCM_VALIDATE_RET( keybits == 128 || keybits == 192 || keybits == 256 );\r
+\r
+ cipher_info = mbedtls_cipher_info_from_values( cipher, keybits,\r
+ MBEDTLS_MODE_ECB );\r
+ if( cipher_info == NULL )\r
+ return( MBEDTLS_ERR_GCM_BAD_INPUT );\r
+\r
+ if( cipher_info->block_size != 16 )\r
+ return( MBEDTLS_ERR_GCM_BAD_INPUT );\r
+\r
+ mbedtls_cipher_free( &ctx->cipher_ctx );\r
+\r
+ if( ( ret = mbedtls_cipher_setup( &ctx->cipher_ctx, cipher_info ) ) != 0 )\r
+ return( ret );\r
+\r
+ if( ( ret = mbedtls_cipher_setkey( &ctx->cipher_ctx, key, keybits,\r
+ MBEDTLS_ENCRYPT ) ) != 0 )\r
+ {\r
+ return( ret );\r
+ }\r
+\r
+ if( ( ret = gcm_gen_table( ctx ) ) != 0 )\r
+ return( ret );\r
+\r
+ return( 0 );\r
+}\r
+\r
+/*\r
+ * Shoup's method for multiplication use this table with\r
+ * last4[x] = x times P^128\r
+ * where x and last4[x] are seen as elements of GF(2^128) as in [MGV]\r
+ */\r
+static const uint64_t last4[16] =\r
+{\r
+ 0x0000, 0x1c20, 0x3840, 0x2460,\r
+ 0x7080, 0x6ca0, 0x48c0, 0x54e0,\r
+ 0xe100, 0xfd20, 0xd940, 0xc560,\r
+ 0x9180, 0x8da0, 0xa9c0, 0xb5e0\r
+};\r
+\r
+/*\r
+ * Sets output to x times H using the precomputed tables.\r
+ * x and output are seen as elements of GF(2^128) as in [MGV].\r
+ */\r
+static void gcm_mult( mbedtls_gcm_context *ctx, const unsigned char x[16],\r
+ unsigned char output[16] )\r
+{\r
+ int i = 0;\r
+ unsigned char lo, hi, rem;\r
+ uint64_t zh, zl;\r
+\r
+#if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)\r
+ if( mbedtls_aesni_has_support( MBEDTLS_AESNI_CLMUL ) ) {\r
+ unsigned char h[16];\r
+\r
+ PUT_UINT32_BE( ctx->HH[8] >> 32, h, 0 );\r
+ PUT_UINT32_BE( ctx->HH[8], h, 4 );\r
+ PUT_UINT32_BE( ctx->HL[8] >> 32, h, 8 );\r
+ PUT_UINT32_BE( ctx->HL[8], h, 12 );\r
+\r
+ mbedtls_aesni_gcm_mult( output, x, h );\r
+ return;\r
+ }\r
+#endif /* MBEDTLS_AESNI_C && MBEDTLS_HAVE_X86_64 */\r
+\r
+ lo = x[15] & 0xf;\r
+\r
+ zh = ctx->HH[lo];\r
+ zl = ctx->HL[lo];\r
+\r
+ for( i = 15; i >= 0; i-- )\r
+ {\r
+ lo = x[i] & 0xf;\r
+ hi = x[i] >> 4;\r
+\r
+ if( i != 15 )\r
+ {\r
+ rem = (unsigned char) zl & 0xf;\r
+ zl = ( zh << 60 ) | ( zl >> 4 );\r
+ zh = ( zh >> 4 );\r
+ zh ^= (uint64_t) last4[rem] << 48;\r
+ zh ^= ctx->HH[lo];\r
+ zl ^= ctx->HL[lo];\r
+\r
+ }\r
+\r
+ rem = (unsigned char) zl & 0xf;\r
+ zl = ( zh << 60 ) | ( zl >> 4 );\r
+ zh = ( zh >> 4 );\r
+ zh ^= (uint64_t) last4[rem] << 48;\r
+ zh ^= ctx->HH[hi];\r
+ zl ^= ctx->HL[hi];\r
+ }\r
+\r
+ PUT_UINT32_BE( zh >> 32, output, 0 );\r
+ PUT_UINT32_BE( zh, output, 4 );\r
+ PUT_UINT32_BE( zl >> 32, output, 8 );\r
+ PUT_UINT32_BE( zl, output, 12 );\r
+}\r
+\r
+int mbedtls_gcm_starts( mbedtls_gcm_context *ctx,\r
+ int mode,\r
+ const unsigned char *iv,\r
+ size_t iv_len,\r
+ const unsigned char *add,\r
+ size_t add_len )\r
+{\r
+ int ret;\r
+ unsigned char work_buf[16];\r
+ size_t i;\r
+ const unsigned char *p;\r
+ size_t use_len, olen = 0;\r
+\r
+ GCM_VALIDATE_RET( ctx != NULL );\r
+ GCM_VALIDATE_RET( iv != NULL );\r
+ GCM_VALIDATE_RET( add_len == 0 || add != NULL );\r
+\r
+ /* IV and AD are limited to 2^64 bits, so 2^61 bytes */\r
+ /* IV is not allowed to be zero length */\r
+ if( iv_len == 0 ||\r
+ ( (uint64_t) iv_len ) >> 61 != 0 ||\r
+ ( (uint64_t) add_len ) >> 61 != 0 )\r
+ {\r
+ return( MBEDTLS_ERR_GCM_BAD_INPUT );\r
+ }\r
+\r
+ memset( ctx->y, 0x00, sizeof(ctx->y) );\r
+ memset( ctx->buf, 0x00, sizeof(ctx->buf) );\r
+\r
+ ctx->mode = mode;\r
+ ctx->len = 0;\r
+ ctx->add_len = 0;\r
+\r
+ if( iv_len == 12 )\r
+ {\r
+ memcpy( ctx->y, iv, iv_len );\r
+ ctx->y[15] = 1;\r
+ }\r
+ else\r
+ {\r
+ memset( work_buf, 0x00, 16 );\r
+ PUT_UINT32_BE( iv_len * 8, work_buf, 12 );\r
+\r
+ p = iv;\r
+ while( iv_len > 0 )\r
+ {\r
+ use_len = ( iv_len < 16 ) ? iv_len : 16;\r
+\r
+ for( i = 0; i < use_len; i++ )\r
+ ctx->y[i] ^= p[i];\r
+\r
+ gcm_mult( ctx, ctx->y, ctx->y );\r
+\r
+ iv_len -= use_len;\r
+ p += use_len;\r
+ }\r
+\r
+ for( i = 0; i < 16; i++ )\r
+ ctx->y[i] ^= work_buf[i];\r
+\r
+ gcm_mult( ctx, ctx->y, ctx->y );\r
+ }\r
+\r
+ if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16,\r
+ ctx->base_ectr, &olen ) ) != 0 )\r
+ {\r
+ return( ret );\r
+ }\r
+\r
+ ctx->add_len = add_len;\r
+ p = add;\r
+ while( add_len > 0 )\r
+ {\r
+ use_len = ( add_len < 16 ) ? add_len : 16;\r
+\r
+ for( i = 0; i < use_len; i++ )\r
+ ctx->buf[i] ^= p[i];\r
+\r
+ gcm_mult( ctx, ctx->buf, ctx->buf );\r
+\r
+ add_len -= use_len;\r
+ p += use_len;\r
+ }\r
+\r
+ return( 0 );\r
+}\r
+\r
+int mbedtls_gcm_update( mbedtls_gcm_context *ctx,\r
+ size_t length,\r
+ const unsigned char *input,\r
+ unsigned char *output )\r
+{\r
+ int ret;\r
+ unsigned char ectr[16];\r
+ size_t i;\r
+ const unsigned char *p;\r
+ unsigned char *out_p = output;\r
+ size_t use_len, olen = 0;\r
+\r
+ GCM_VALIDATE_RET( ctx != NULL );\r
+ GCM_VALIDATE_RET( length == 0 || input != NULL );\r
+ GCM_VALIDATE_RET( length == 0 || output != NULL );\r
+\r
+ if( output > input && (size_t) ( output - input ) < length )\r
+ return( MBEDTLS_ERR_GCM_BAD_INPUT );\r
+\r
+ /* Total length is restricted to 2^39 - 256 bits, ie 2^36 - 2^5 bytes\r
+ * Also check for possible overflow */\r
+ if( ctx->len + length < ctx->len ||\r
+ (uint64_t) ctx->len + length > 0xFFFFFFFE0ull )\r
+ {\r
+ return( MBEDTLS_ERR_GCM_BAD_INPUT );\r
+ }\r
+\r
+ ctx->len += length;\r
+\r
+ p = input;\r
+ while( length > 0 )\r
+ {\r
+ use_len = ( length < 16 ) ? length : 16;\r
+\r
+ for( i = 16; i > 12; i-- )\r
+ if( ++ctx->y[i - 1] != 0 )\r
+ break;\r
+\r
+ if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ectr,\r
+ &olen ) ) != 0 )\r
+ {\r
+ return( ret );\r
+ }\r
+\r
+ for( i = 0; i < use_len; i++ )\r
+ {\r
+ if( ctx->mode == MBEDTLS_GCM_DECRYPT )\r
+ ctx->buf[i] ^= p[i];\r
+ out_p[i] = ectr[i] ^ p[i];\r
+ if( ctx->mode == MBEDTLS_GCM_ENCRYPT )\r
+ ctx->buf[i] ^= out_p[i];\r
+ }\r
+\r
+ gcm_mult( ctx, ctx->buf, ctx->buf );\r
+\r
+ length -= use_len;\r
+ p += use_len;\r
+ out_p += use_len;\r
+ }\r
+\r
+ return( 0 );\r
+}\r
+\r
+int mbedtls_gcm_finish( mbedtls_gcm_context *ctx,\r
+ unsigned char *tag,\r
+ size_t tag_len )\r
+{\r
+ unsigned char work_buf[16];\r
+ size_t i;\r
+ uint64_t orig_len;\r
+ uint64_t orig_add_len;\r
+\r
+ GCM_VALIDATE_RET( ctx != NULL );\r
+ GCM_VALIDATE_RET( tag != NULL );\r
+\r
+ orig_len = ctx->len * 8;\r
+ orig_add_len = ctx->add_len * 8;\r
+\r
+ if( tag_len > 16 || tag_len < 4 )\r
+ return( MBEDTLS_ERR_GCM_BAD_INPUT );\r
+\r
+ memcpy( tag, ctx->base_ectr, tag_len );\r
+\r
+ if( orig_len || orig_add_len )\r
+ {\r
+ memset( work_buf, 0x00, 16 );\r
+\r
+ PUT_UINT32_BE( ( orig_add_len >> 32 ), work_buf, 0 );\r
+ PUT_UINT32_BE( ( orig_add_len ), work_buf, 4 );\r
+ PUT_UINT32_BE( ( orig_len >> 32 ), work_buf, 8 );\r
+ PUT_UINT32_BE( ( orig_len ), work_buf, 12 );\r
+\r
+ for( i = 0; i < 16; i++ )\r
+ ctx->buf[i] ^= work_buf[i];\r
+\r
+ gcm_mult( ctx, ctx->buf, ctx->buf );\r
+\r
+ for( i = 0; i < tag_len; i++ )\r
+ tag[i] ^= ctx->buf[i];\r
+ }\r
+\r
+ return( 0 );\r
+}\r
+\r
+int mbedtls_gcm_crypt_and_tag( mbedtls_gcm_context *ctx,\r
+ int mode,\r
+ size_t length,\r
+ const unsigned char *iv,\r
+ size_t iv_len,\r
+ const unsigned char *add,\r
+ size_t add_len,\r
+ const unsigned char *input,\r
+ unsigned char *output,\r
+ size_t tag_len,\r
+ unsigned char *tag )\r
+{\r
+ int ret;\r
+\r
+ GCM_VALIDATE_RET( ctx != NULL );\r
+ GCM_VALIDATE_RET( iv != NULL );\r
+ GCM_VALIDATE_RET( add_len == 0 || add != NULL );\r
+ GCM_VALIDATE_RET( length == 0 || input != NULL );\r
+ GCM_VALIDATE_RET( length == 0 || output != NULL );\r
+ GCM_VALIDATE_RET( tag != NULL );\r
+\r
+ if( ( ret = mbedtls_gcm_starts( ctx, mode, iv, iv_len, add, add_len ) ) != 0 )\r
+ return( ret );\r
+\r
+ if( ( ret = mbedtls_gcm_update( ctx, length, input, output ) ) != 0 )\r
+ return( ret );\r
+\r
+ if( ( ret = mbedtls_gcm_finish( ctx, tag, tag_len ) ) != 0 )\r
+ return( ret );\r
+\r
+ return( 0 );\r
+}\r
+\r
+int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx,\r
+ size_t length,\r
+ const unsigned char *iv,\r
+ size_t iv_len,\r
+ const unsigned char *add,\r
+ size_t add_len,\r
+ const unsigned char *tag,\r
+ size_t tag_len,\r
+ const unsigned char *input,\r
+ unsigned char *output )\r
+{\r
+ int ret;\r
+ unsigned char check_tag[16];\r
+ size_t i;\r
+ int diff;\r
+\r
+ GCM_VALIDATE_RET( ctx != NULL );\r
+ GCM_VALIDATE_RET( iv != NULL );\r
+ GCM_VALIDATE_RET( add_len == 0 || add != NULL );\r
+ GCM_VALIDATE_RET( tag != NULL );\r
+ GCM_VALIDATE_RET( length == 0 || input != NULL );\r
+ GCM_VALIDATE_RET( length == 0 || output != NULL );\r
+\r
+ if( ( ret = mbedtls_gcm_crypt_and_tag( ctx, MBEDTLS_GCM_DECRYPT, length,\r
+ iv, iv_len, add, add_len,\r
+ input, output, tag_len, check_tag ) ) != 0 )\r
+ {\r
+ return( ret );\r
+ }\r
+\r
+ /* Check tag in "constant-time" */\r
+ for( diff = 0, i = 0; i < tag_len; i++ )\r
+ diff |= tag[i] ^ check_tag[i];\r
+\r
+ if( diff != 0 )\r
+ {\r
+ mbedtls_platform_zeroize( output, length );\r
+ return( MBEDTLS_ERR_GCM_AUTH_FAILED );\r
+ }\r
+\r
+ return( 0 );\r
+}\r
+\r
+void mbedtls_gcm_free( mbedtls_gcm_context *ctx )\r
+{\r
+ if( ctx == NULL )\r
+ return;\r
+ mbedtls_cipher_free( &ctx->cipher_ctx );\r
+ mbedtls_platform_zeroize( ctx, sizeof( mbedtls_gcm_context ) );\r
+}\r
+\r
+#endif /* !MBEDTLS_GCM_ALT */\r
+\r
+#if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)\r
+/*\r
+ * AES-GCM test vectors from:\r
+ *\r
+ * http://csrc.nist.gov/groups/STM/cavp/documents/mac/gcmtestvectors.zip\r
+ */\r
+#define MAX_TESTS 6\r
+\r
+static const int key_index_test_data[MAX_TESTS] =\r
+ { 0, 0, 1, 1, 1, 1 };\r
+\r
+static const unsigned char key_test_data[MAX_TESTS][32] =\r
+{\r
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },\r
+ { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,\r
+ 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,\r
+ 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,\r
+ 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08 },\r
+};\r
+\r
+static const size_t iv_len_test_data[MAX_TESTS] =\r
+ { 12, 12, 12, 12, 8, 60 };\r
+\r
+static const int iv_index_test_data[MAX_TESTS] =\r
+ { 0, 0, 1, 1, 1, 2 };\r
+\r
+static const unsigned char iv_test_data[MAX_TESTS][64] =\r
+{\r
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r
+ 0x00, 0x00, 0x00, 0x00 },\r
+ { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,\r
+ 0xde, 0xca, 0xf8, 0x88 },\r
+ { 0x93, 0x13, 0x22, 0x5d, 0xf8, 0x84, 0x06, 0xe5,\r
+ 0x55, 0x90, 0x9c, 0x5a, 0xff, 0x52, 0x69, 0xaa,\r
+ 0x6a, 0x7a, 0x95, 0x38, 0x53, 0x4f, 0x7d, 0xa1,\r
+ 0xe4, 0xc3, 0x03, 0xd2, 0xa3, 0x18, 0xa7, 0x28,\r
+ 0xc3, 0xc0, 0xc9, 0x51, 0x56, 0x80, 0x95, 0x39,\r
+ 0xfc, 0xf0, 0xe2, 0x42, 0x9a, 0x6b, 0x52, 0x54,\r
+ 0x16, 0xae, 0xdb, 0xf5, 0xa0, 0xde, 0x6a, 0x57,\r
+ 0xa6, 0x37, 0xb3, 0x9b },\r
+};\r
+\r
+static const size_t add_len_test_data[MAX_TESTS] =\r
+ { 0, 0, 0, 20, 20, 20 };\r
+\r
+static const int add_index_test_data[MAX_TESTS] =\r
+ { 0, 0, 0, 1, 1, 1 };\r
+\r
+static const unsigned char additional_test_data[MAX_TESTS][64] =\r
+{\r
+ { 0x00 },\r
+ { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,\r
+ 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,\r
+ 0xab, 0xad, 0xda, 0xd2 },\r
+};\r
+\r
+static const size_t pt_len_test_data[MAX_TESTS] =\r
+ { 0, 16, 64, 60, 60, 60 };\r
+\r
+static const int pt_index_test_data[MAX_TESTS] =\r
+ { 0, 0, 1, 1, 1, 1 };\r
+\r
+static const unsigned char pt_test_data[MAX_TESTS][64] =\r
+{\r
+ { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\r
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },\r
+ { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,\r
+ 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,\r
+ 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,\r
+ 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,\r
+ 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,\r
+ 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,\r
+ 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,\r
+ 0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55 },\r
+};\r
+\r
+static const unsigned char ct_test_data[MAX_TESTS * 3][64] =\r
+{\r
+ { 0x00 },\r
+ { 0x03, 0x88, 0xda, 0xce, 0x60, 0xb6, 0xa3, 0x92,\r
+ 0xf3, 0x28, 0xc2, 0xb9, 0x71, 0xb2, 0xfe, 0x78 },\r
+ { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,\r
+ 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,\r
+ 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,\r
+ 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,\r
+ 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,\r
+ 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,\r
+ 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,\r
+ 0x3d, 0x58, 0xe0, 0x91, 0x47, 0x3f, 0x59, 0x85 },\r
+ { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,\r
+ 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,\r
+ 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,\r
+ 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,\r
+ 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,\r
+ 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,\r
+ 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,\r
+ 0x3d, 0x58, 0xe0, 0x91 },\r
+ { 0x61, 0x35, 0x3b, 0x4c, 0x28, 0x06, 0x93, 0x4a,\r
+ 0x77, 0x7f, 0xf5, 0x1f, 0xa2, 0x2a, 0x47, 0x55,\r
+ 0x69, 0x9b, 0x2a, 0x71, 0x4f, 0xcd, 0xc6, 0xf8,\r
+ 0x37, 0x66, 0xe5, 0xf9, 0x7b, 0x6c, 0x74, 0x23,\r
+ 0x73, 0x80, 0x69, 0x00, 0xe4, 0x9f, 0x24, 0xb2,\r
+ 0x2b, 0x09, 0x75, 0x44, 0xd4, 0x89, 0x6b, 0x42,\r
+ 0x49, 0x89, 0xb5, 0xe1, 0xeb, 0xac, 0x0f, 0x07,\r
+ 0xc2, 0x3f, 0x45, 0x98 },\r
+ { 0x8c, 0xe2, 0x49, 0x98, 0x62, 0x56, 0x15, 0xb6,\r
+ 0x03, 0xa0, 0x33, 0xac, 0xa1, 0x3f, 0xb8, 0x94,\r
+ 0xbe, 0x91, 0x12, 0xa5, 0xc3, 0xa2, 0x11, 0xa8,\r
+ 0xba, 0x26, 0x2a, 0x3c, 0xca, 0x7e, 0x2c, 0xa7,\r
+ 0x01, 0xe4, 0xa9, 0xa4, 0xfb, 0xa4, 0x3c, 0x90,\r
+ 0xcc, 0xdc, 0xb2, 0x81, 0xd4, 0x8c, 0x7c, 0x6f,\r
+ 0xd6, 0x28, 0x75, 0xd2, 0xac, 0xa4, 0x17, 0x03,\r
+ 0x4c, 0x34, 0xae, 0xe5 },\r
+ { 0x00 },\r
+ { 0x98, 0xe7, 0x24, 0x7c, 0x07, 0xf0, 0xfe, 0x41,\r
+ 0x1c, 0x26, 0x7e, 0x43, 0x84, 0xb0, 0xf6, 0x00 },\r
+ { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,\r
+ 0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,\r
+ 0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,\r
+ 0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,\r
+ 0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,\r
+ 0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,\r
+ 0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,\r
+ 0xcc, 0xda, 0x27, 0x10, 0xac, 0xad, 0xe2, 0x56 },\r
+ { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,\r
+ 0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,\r
+ 0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,\r
+ 0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,\r
+ 0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,\r
+ 0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,\r
+ 0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,\r
+ 0xcc, 0xda, 0x27, 0x10 },\r
+ { 0x0f, 0x10, 0xf5, 0x99, 0xae, 0x14, 0xa1, 0x54,\r
+ 0xed, 0x24, 0xb3, 0x6e, 0x25, 0x32, 0x4d, 0xb8,\r
+ 0xc5, 0x66, 0x63, 0x2e, 0xf2, 0xbb, 0xb3, 0x4f,\r
+ 0x83, 0x47, 0x28, 0x0f, 0xc4, 0x50, 0x70, 0x57,\r
+ 0xfd, 0xdc, 0x29, 0xdf, 0x9a, 0x47, 0x1f, 0x75,\r
+ 0xc6, 0x65, 0x41, 0xd4, 0xd4, 0xda, 0xd1, 0xc9,\r
+ 0xe9, 0x3a, 0x19, 0xa5, 0x8e, 0x8b, 0x47, 0x3f,\r
+ 0xa0, 0xf0, 0x62, 0xf7 },\r
+ { 0xd2, 0x7e, 0x88, 0x68, 0x1c, 0xe3, 0x24, 0x3c,\r
+ 0x48, 0x30, 0x16, 0x5a, 0x8f, 0xdc, 0xf9, 0xff,\r
+ 0x1d, 0xe9, 0xa1, 0xd8, 0xe6, 0xb4, 0x47, 0xef,\r
+ 0x6e, 0xf7, 0xb7, 0x98, 0x28, 0x66, 0x6e, 0x45,\r
+ 0x81, 0xe7, 0x90, 0x12, 0xaf, 0x34, 0xdd, 0xd9,\r
+ 0xe2, 0xf0, 0x37, 0x58, 0x9b, 0x29, 0x2d, 0xb3,\r
+ 0xe6, 0x7c, 0x03, 0x67, 0x45, 0xfa, 0x22, 0xe7,\r
+ 0xe9, 0xb7, 0x37, 0x3b },\r
+ { 0x00 },\r
+ { 0xce, 0xa7, 0x40, 0x3d, 0x4d, 0x60, 0x6b, 0x6e,\r
+ 0x07, 0x4e, 0xc5, 0xd3, 0xba, 0xf3, 0x9d, 0x18 },\r
+ { 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,\r
+ 0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,\r
+ 0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,\r
+ 0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,\r
+ 0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,\r
+ 0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,\r
+ 0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,\r
+ 0xbc, 0xc9, 0xf6, 0x62, 0x89, 0x80, 0x15, 0xad },\r
+ { 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,\r
+ 0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,\r
+ 0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,\r
+ 0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,\r
+ 0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,\r
+ 0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,\r
+ 0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,\r
+ 0xbc, 0xc9, 0xf6, 0x62 },\r
+ { 0xc3, 0x76, 0x2d, 0xf1, 0xca, 0x78, 0x7d, 0x32,\r
+ 0xae, 0x47, 0xc1, 0x3b, 0xf1, 0x98, 0x44, 0xcb,\r
+ 0xaf, 0x1a, 0xe1, 0x4d, 0x0b, 0x97, 0x6a, 0xfa,\r
+ 0xc5, 0x2f, 0xf7, 0xd7, 0x9b, 0xba, 0x9d, 0xe0,\r
+ 0xfe, 0xb5, 0x82, 0xd3, 0x39, 0x34, 0xa4, 0xf0,\r
+ 0x95, 0x4c, 0xc2, 0x36, 0x3b, 0xc7, 0x3f, 0x78,\r
+ 0x62, 0xac, 0x43, 0x0e, 0x64, 0xab, 0xe4, 0x99,\r
+ 0xf4, 0x7c, 0x9b, 0x1f },\r
+ { 0x5a, 0x8d, 0xef, 0x2f, 0x0c, 0x9e, 0x53, 0xf1,\r
+ 0xf7, 0x5d, 0x78, 0x53, 0x65, 0x9e, 0x2a, 0x20,\r
+ 0xee, 0xb2, 0xb2, 0x2a, 0xaf, 0xde, 0x64, 0x19,\r
+ 0xa0, 0x58, 0xab, 0x4f, 0x6f, 0x74, 0x6b, 0xf4,\r
+ 0x0f, 0xc0, 0xc3, 0xb7, 0x80, 0xf2, 0x44, 0x45,\r
+ 0x2d, 0xa3, 0xeb, 0xf1, 0xc5, 0xd8, 0x2c, 0xde,\r
+ 0xa2, 0x41, 0x89, 0x97, 0x20, 0x0e, 0xf8, 0x2e,\r
+ 0x44, 0xae, 0x7e, 0x3f },\r
+};\r
+\r
+static const unsigned char tag_test_data[MAX_TESTS * 3][16] =\r
+{\r
+ { 0x58, 0xe2, 0xfc, 0xce, 0xfa, 0x7e, 0x30, 0x61,\r
+ 0x36, 0x7f, 0x1d, 0x57, 0xa4, 0xe7, 0x45, 0x5a },\r
+ { 0xab, 0x6e, 0x47, 0xd4, 0x2c, 0xec, 0x13, 0xbd,\r
+ 0xf5, 0x3a, 0x67, 0xb2, 0x12, 0x57, 0xbd, 0xdf },\r
+ { 0x4d, 0x5c, 0x2a, 0xf3, 0x27, 0xcd, 0x64, 0xa6,\r
+ 0x2c, 0xf3, 0x5a, 0xbd, 0x2b, 0xa6, 0xfa, 0xb4 },\r
+ { 0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,\r
+ 0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47 },\r
+ { 0x36, 0x12, 0xd2, 0xe7, 0x9e, 0x3b, 0x07, 0x85,\r
+ 0x56, 0x1b, 0xe1, 0x4a, 0xac, 0xa2, 0xfc, 0xcb },\r
+ { 0x61, 0x9c, 0xc5, 0xae, 0xff, 0xfe, 0x0b, 0xfa,\r
+ 0x46, 0x2a, 0xf4, 0x3c, 0x16, 0x99, 0xd0, 0x50 },\r
+ { 0xcd, 0x33, 0xb2, 0x8a, 0xc7, 0x73, 0xf7, 0x4b,\r
+ 0xa0, 0x0e, 0xd1, 0xf3, 0x12, 0x57, 0x24, 0x35 },\r
+ { 0x2f, 0xf5, 0x8d, 0x80, 0x03, 0x39, 0x27, 0xab,\r
+ 0x8e, 0xf4, 0xd4, 0x58, 0x75, 0x14, 0xf0, 0xfb },\r
+ { 0x99, 0x24, 0xa7, 0xc8, 0x58, 0x73, 0x36, 0xbf,\r
+ 0xb1, 0x18, 0x02, 0x4d, 0xb8, 0x67, 0x4a, 0x14 },\r
+ { 0x25, 0x19, 0x49, 0x8e, 0x80, 0xf1, 0x47, 0x8f,\r
+ 0x37, 0xba, 0x55, 0xbd, 0x6d, 0x27, 0x61, 0x8c },\r
+ { 0x65, 0xdc, 0xc5, 0x7f, 0xcf, 0x62, 0x3a, 0x24,\r
+ 0x09, 0x4f, 0xcc, 0xa4, 0x0d, 0x35, 0x33, 0xf8 },\r
+ { 0xdc, 0xf5, 0x66, 0xff, 0x29, 0x1c, 0x25, 0xbb,\r
+ 0xb8, 0x56, 0x8f, 0xc3, 0xd3, 0x76, 0xa6, 0xd9 },\r
+ { 0x53, 0x0f, 0x8a, 0xfb, 0xc7, 0x45, 0x36, 0xb9,\r
+ 0xa9, 0x63, 0xb4, 0xf1, 0xc4, 0xcb, 0x73, 0x8b },\r
+ { 0xd0, 0xd1, 0xc8, 0xa7, 0x99, 0x99, 0x6b, 0xf0,\r
+ 0x26, 0x5b, 0x98, 0xb5, 0xd4, 0x8a, 0xb9, 0x19 },\r
+ { 0xb0, 0x94, 0xda, 0xc5, 0xd9, 0x34, 0x71, 0xbd,\r
+ 0xec, 0x1a, 0x50, 0x22, 0x70, 0xe3, 0xcc, 0x6c },\r
+ { 0x76, 0xfc, 0x6e, 0xce, 0x0f, 0x4e, 0x17, 0x68,\r
+ 0xcd, 0xdf, 0x88, 0x53, 0xbb, 0x2d, 0x55, 0x1b },\r
+ { 0x3a, 0x33, 0x7d, 0xbf, 0x46, 0xa7, 0x92, 0xc4,\r
+ 0x5e, 0x45, 0x49, 0x13, 0xfe, 0x2e, 0xa8, 0xf2 },\r
+ { 0xa4, 0x4a, 0x82, 0x66, 0xee, 0x1c, 0x8e, 0xb0,\r
+ 0xc8, 0xb5, 0xd4, 0xcf, 0x5a, 0xe9, 0xf1, 0x9a },\r
+};\r
+\r
+int mbedtls_gcm_self_test( int verbose )\r
+{\r
+ mbedtls_gcm_context ctx;\r
+ unsigned char buf[64];\r
+ unsigned char tag_buf[16];\r
+ int i, j, ret;\r
+ mbedtls_cipher_id_t cipher = MBEDTLS_CIPHER_ID_AES;\r
+\r
+ for( j = 0; j < 3; j++ )\r
+ {\r
+ int key_len = 128 + 64 * j;\r
+\r
+ for( i = 0; i < MAX_TESTS; i++ )\r
+ {\r
+ mbedtls_gcm_init( &ctx );\r
+\r
+ if( verbose != 0 )\r
+ mbedtls_printf( " AES-GCM-%3d #%d (%s): ",\r
+ key_len, i, "enc" );\r
+\r
+ ret = mbedtls_gcm_setkey( &ctx, cipher,\r
+ key_test_data[key_index_test_data[i]],\r
+ key_len );\r
+ /*\r
+ * AES-192 is an optional feature that may be unavailable when\r
+ * there is an alternative underlying implementation i.e. when\r
+ * MBEDTLS_AES_ALT is defined.\r
+ */\r
+ if( ret == MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED && key_len == 192 )\r
+ {\r
+ mbedtls_printf( "skipped\n" );\r
+ break;\r
+ }\r
+ else if( ret != 0 )\r
+ {\r
+ goto exit;\r
+ }\r
+\r
+ ret = mbedtls_gcm_crypt_and_tag( &ctx, MBEDTLS_GCM_ENCRYPT,\r
+ pt_len_test_data[i],\r
+ iv_test_data[iv_index_test_data[i]],\r
+ iv_len_test_data[i],\r
+ additional_test_data[add_index_test_data[i]],\r
+ add_len_test_data[i],\r
+ pt_test_data[pt_index_test_data[i]],\r
+ buf, 16, tag_buf );\r
+ if( ret != 0 )\r
+ goto exit;\r
+\r
+ if ( memcmp( buf, ct_test_data[j * 6 + i],\r
+ pt_len_test_data[i] ) != 0 ||\r
+ memcmp( tag_buf, tag_test_data[j * 6 + i], 16 ) != 0 )\r
+ {\r
+ ret = 1;\r
+ goto exit;\r
+ }\r
+\r
+ mbedtls_gcm_free( &ctx );\r
+\r
+ if( verbose != 0 )\r
+ mbedtls_printf( "passed\n" );\r
+\r
+ mbedtls_gcm_init( &ctx );\r
+\r
+ if( verbose != 0 )\r
+ mbedtls_printf( " AES-GCM-%3d #%d (%s): ",\r
+ key_len, i, "dec" );\r
+\r
+ ret = mbedtls_gcm_setkey( &ctx, cipher,\r
+ key_test_data[key_index_test_data[i]],\r
+ key_len );\r
+ if( ret != 0 )\r
+ goto exit;\r
+\r
+ ret = mbedtls_gcm_crypt_and_tag( &ctx, MBEDTLS_GCM_DECRYPT,\r
+ pt_len_test_data[i],\r
+ iv_test_data[iv_index_test_data[i]],\r
+ iv_len_test_data[i],\r
+ additional_test_data[add_index_test_data[i]],\r
+ add_len_test_data[i],\r
+ ct_test_data[j * 6 + i], buf, 16, tag_buf );\r
+\r
+ if( ret != 0 )\r
+ goto exit;\r
+\r
+ if( memcmp( buf, pt_test_data[pt_index_test_data[i]],\r
+ pt_len_test_data[i] ) != 0 ||\r
+ memcmp( tag_buf, tag_test_data[j * 6 + i], 16 ) != 0 )\r
+ {\r
+ ret = 1;\r
+ goto exit;\r
+ }\r
+\r
+ mbedtls_gcm_free( &ctx );\r
+\r
+ if( verbose != 0 )\r
+ mbedtls_printf( "passed\n" );\r
+\r
+ mbedtls_gcm_init( &ctx );\r
+\r
+ if( verbose != 0 )\r
+ mbedtls_printf( " AES-GCM-%3d #%d split (%s): ",\r
+ key_len, i, "enc" );\r
+\r
+ ret = mbedtls_gcm_setkey( &ctx, cipher,\r
+ key_test_data[key_index_test_data[i]],\r
+ key_len );\r
+ if( ret != 0 )\r
+ goto exit;\r
+\r
+ ret = mbedtls_gcm_starts( &ctx, MBEDTLS_GCM_ENCRYPT,\r
+ iv_test_data[iv_index_test_data[i]],\r
+ iv_len_test_data[i],\r
+ additional_test_data[add_index_test_data[i]],\r
+ add_len_test_data[i] );\r
+ if( ret != 0 )\r
+ goto exit;\r
+\r
+ if( pt_len_test_data[i] > 32 )\r
+ {\r
+ size_t rest_len = pt_len_test_data[i] - 32;\r
+ ret = mbedtls_gcm_update( &ctx, 32,\r
+ pt_test_data[pt_index_test_data[i]],\r
+ buf );\r
+ if( ret != 0 )\r
+ goto exit;\r
+\r
+ ret = mbedtls_gcm_update( &ctx, rest_len,\r
+ pt_test_data[pt_index_test_data[i]] + 32,\r
+ buf + 32 );\r
+ if( ret != 0 )\r
+ goto exit;\r
+ }\r
+ else\r
+ {\r
+ ret = mbedtls_gcm_update( &ctx, pt_len_test_data[i],\r
+ pt_test_data[pt_index_test_data[i]],\r
+ buf );\r
+ if( ret != 0 )\r
+ goto exit;\r
+ }\r
+\r
+ ret = mbedtls_gcm_finish( &ctx, tag_buf, 16 );\r
+ if( ret != 0 )\r
+ goto exit;\r
+\r
+ if( memcmp( buf, ct_test_data[j * 6 + i],\r
+ pt_len_test_data[i] ) != 0 ||\r
+ memcmp( tag_buf, tag_test_data[j * 6 + i], 16 ) != 0 )\r
+ {\r
+ ret = 1;\r
+ goto exit;\r
+ }\r
+\r
+ mbedtls_gcm_free( &ctx );\r
+\r
+ if( verbose != 0 )\r
+ mbedtls_printf( "passed\n" );\r
+\r
+ mbedtls_gcm_init( &ctx );\r
+\r
+ if( verbose != 0 )\r
+ mbedtls_printf( " AES-GCM-%3d #%d split (%s): ",\r
+ key_len, i, "dec" );\r
+\r
+ ret = mbedtls_gcm_setkey( &ctx, cipher,\r
+ key_test_data[key_index_test_data[i]],\r
+ key_len );\r
+ if( ret != 0 )\r
+ goto exit;\r
+\r
+ ret = mbedtls_gcm_starts( &ctx, MBEDTLS_GCM_DECRYPT,\r
+ iv_test_data[iv_index_test_data[i]],\r
+ iv_len_test_data[i],\r
+ additional_test_data[add_index_test_data[i]],\r
+ add_len_test_data[i] );\r
+ if( ret != 0 )\r
+ goto exit;\r
+\r
+ if( pt_len_test_data[i] > 32 )\r
+ {\r
+ size_t rest_len = pt_len_test_data[i] - 32;\r
+ ret = mbedtls_gcm_update( &ctx, 32, ct_test_data[j * 6 + i],\r
+ buf );\r
+ if( ret != 0 )\r
+ goto exit;\r
+\r
+ ret = mbedtls_gcm_update( &ctx, rest_len,\r
+ ct_test_data[j * 6 + i] + 32,\r
+ buf + 32 );\r
+ if( ret != 0 )\r
+ goto exit;\r
+ }\r
+ else\r
+ {\r
+ ret = mbedtls_gcm_update( &ctx, pt_len_test_data[i],\r
+ ct_test_data[j * 6 + i],\r
+ buf );\r
+ if( ret != 0 )\r
+ goto exit;\r
+ }\r
+\r
+ ret = mbedtls_gcm_finish( &ctx, tag_buf, 16 );\r
+ if( ret != 0 )\r
+ goto exit;\r
+\r
+ if( memcmp( buf, pt_test_data[pt_index_test_data[i]],\r
+ pt_len_test_data[i] ) != 0 ||\r
+ memcmp( tag_buf, tag_test_data[j * 6 + i], 16 ) != 0 )\r
+ {\r
+ ret = 1;\r
+ goto exit;\r
+ }\r
+\r
+ mbedtls_gcm_free( &ctx );\r
+\r
+ if( verbose != 0 )\r
+ mbedtls_printf( "passed\n" );\r
+ }\r
+ }\r
+\r
+ if( verbose != 0 )\r
+ mbedtls_printf( "\n" );\r
+\r
+ ret = 0;\r
+\r
+exit:\r
+ if( ret != 0 )\r
+ {\r
+ if( verbose != 0 )\r
+ mbedtls_printf( "failed\n" );\r
+ mbedtls_gcm_free( &ctx );\r
+ }\r
+\r
+ return( ret );\r
+}\r
+\r
+#endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */\r
+\r
+#endif /* MBEDTLS_GCM_C */\r
projects / freertos / blobdiff