erkin yucel / mbed-os

mbed os with nrf51 internal bandgap enabled to read battery level

Dependents:   BLE_file_test BLE_Blink ExternalEncoder

features/mbedtls/src/gcm.c@0:f269e3021894, 2016-10-23 (annotated)

Committer:
elessair
Date:
Sun Oct 23 15:10:02 2016 +0000
Revision:
0:f269e3021894
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elessair 0:f269e3021894 1 /*
elessair 0:f269e3021894 2 * NIST SP800-38D compliant GCM implementation
elessair 0:f269e3021894 3 *
elessair 0:f269e3021894 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
elessair 0:f269e3021894 5 * SPDX-License-Identifier: Apache-2.0
elessair 0:f269e3021894 6 *
elessair 0:f269e3021894 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
elessair 0:f269e3021894 8 * not use this file except in compliance with the License.
elessair 0:f269e3021894 9 * You may obtain a copy of the License at
elessair 0:f269e3021894 10 *
elessair 0:f269e3021894 11 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 12 *
elessair 0:f269e3021894 13 * Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
elessair 0:f269e3021894 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 16 * See the License for the specific language governing permissions and
elessair 0:f269e3021894 17 * limitations under the License.
elessair 0:f269e3021894 18 *
elessair 0:f269e3021894 19 * This file is part of mbed TLS (https://tls.mbed.org)
elessair 0:f269e3021894 20 */
elessair 0:f269e3021894 21
elessair 0:f269e3021894 22 /*
elessair 0:f269e3021894 23 * http://csrc.nist.gov/publications/nistpubs/800-38D/SP-800-38D.pdf
elessair 0:f269e3021894 24 *
elessair 0:f269e3021894 25 * See also:
elessair 0:f269e3021894 26 * [MGV] http://csrc.nist.gov/groups/ST/toolkit/BCM/documents/proposedmodes/gcm/gcm-revised-spec.pdf
elessair 0:f269e3021894 27 *
elessair 0:f269e3021894 28 * We use the algorithm described as Shoup's method with 4-bit tables in
elessair 0:f269e3021894 29 * [MGV] 4.1, pp. 12-13, to enhance speed without using too much memory.
elessair 0:f269e3021894 30 */
elessair 0:f269e3021894 31
elessair 0:f269e3021894 32 #if !defined(MBEDTLS_CONFIG_FILE)
elessair 0:f269e3021894 33 #include "mbedtls/config.h"
elessair 0:f269e3021894 34 #else
elessair 0:f269e3021894 35 #include MBEDTLS_CONFIG_FILE
elessair 0:f269e3021894 36 #endif
elessair 0:f269e3021894 37
elessair 0:f269e3021894 38 #if defined(MBEDTLS_GCM_C)
elessair 0:f269e3021894 39
elessair 0:f269e3021894 40 #include "mbedtls/gcm.h"
elessair 0:f269e3021894 41
elessair 0:f269e3021894 42 #include <string.h>
elessair 0:f269e3021894 43
elessair 0:f269e3021894 44 #if defined(MBEDTLS_AESNI_C)
elessair 0:f269e3021894 45 #include "mbedtls/aesni.h"
elessair 0:f269e3021894 46 #endif
elessair 0:f269e3021894 47
elessair 0:f269e3021894 48 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
elessair 0:f269e3021894 49 #if defined(MBEDTLS_PLATFORM_C)
elessair 0:f269e3021894 50 #include "mbedtls/platform.h"
elessair 0:f269e3021894 51 #else
elessair 0:f269e3021894 52 #include <stdio.h>
elessair 0:f269e3021894 53 #define mbedtls_printf printf
elessair 0:f269e3021894 54 #endif /* MBEDTLS_PLATFORM_C */
elessair 0:f269e3021894 55 #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
elessair 0:f269e3021894 56
elessair 0:f269e3021894 57 /*
elessair 0:f269e3021894 58 * 32-bit integer manipulation macros (big endian)
elessair 0:f269e3021894 59 */
elessair 0:f269e3021894 60 #ifndef GET_UINT32_BE
elessair 0:f269e3021894 61 #define GET_UINT32_BE(n,b,i) \
elessair 0:f269e3021894 62 { \
elessair 0:f269e3021894 63 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
elessair 0:f269e3021894 64 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
elessair 0:f269e3021894 65 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
elessair 0:f269e3021894 66 | ( (uint32_t) (b)[(i) + 3] ); \
elessair 0:f269e3021894 67 }
elessair 0:f269e3021894 68 #endif
elessair 0:f269e3021894 69
elessair 0:f269e3021894 70 #ifndef PUT_UINT32_BE
elessair 0:f269e3021894 71 #define PUT_UINT32_BE(n,b,i) \
elessair 0:f269e3021894 72 { \
elessair 0:f269e3021894 73 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
elessair 0:f269e3021894 74 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
elessair 0:f269e3021894 75 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
elessair 0:f269e3021894 76 (b)[(i) + 3] = (unsigned char) ( (n) ); \
elessair 0:f269e3021894 77 }
elessair 0:f269e3021894 78 #endif
elessair 0:f269e3021894 79
elessair 0:f269e3021894 80 /* Implementation that should never be optimized out by the compiler */
elessair 0:f269e3021894 81 static void mbedtls_zeroize( void *v, size_t n ) {
elessair 0:f269e3021894 82 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
elessair 0:f269e3021894 83 }
elessair 0:f269e3021894 84
elessair 0:f269e3021894 85 /*
elessair 0:f269e3021894 86 * Initialize a context
elessair 0:f269e3021894 87 */
elessair 0:f269e3021894 88 void mbedtls_gcm_init( mbedtls_gcm_context *ctx )
elessair 0:f269e3021894 89 {
elessair 0:f269e3021894 90 memset( ctx, 0, sizeof( mbedtls_gcm_context ) );
elessair 0:f269e3021894 91 }
elessair 0:f269e3021894 92
elessair 0:f269e3021894 93 /*
elessair 0:f269e3021894 94 * Precompute small multiples of H, that is set
elessair 0:f269e3021894 95 * HH[i] || HL[i] = H times i,
elessair 0:f269e3021894 96 * where i is seen as a field element as in [MGV], ie high-order bits
elessair 0:f269e3021894 97 * correspond to low powers of P. The result is stored in the same way, that
elessair 0:f269e3021894 98 * is the high-order bit of HH corresponds to P^0 and the low-order bit of HL
elessair 0:f269e3021894 99 * corresponds to P^127.
elessair 0:f269e3021894 100 */
elessair 0:f269e3021894 101 static int gcm_gen_table( mbedtls_gcm_context *ctx )
elessair 0:f269e3021894 102 {
elessair 0:f269e3021894 103 int ret, i, j;
elessair 0:f269e3021894 104 uint64_t hi, lo;
elessair 0:f269e3021894 105 uint64_t vl, vh;
elessair 0:f269e3021894 106 unsigned char h[16];
elessair 0:f269e3021894 107 size_t olen = 0;
elessair 0:f269e3021894 108
elessair 0:f269e3021894 109 memset( h, 0, 16 );
elessair 0:f269e3021894 110 if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, h, 16, h, &olen ) ) != 0 )
elessair 0:f269e3021894 111 return( ret );
elessair 0:f269e3021894 112
elessair 0:f269e3021894 113 /* pack h as two 64-bits ints, big-endian */
elessair 0:f269e3021894 114 GET_UINT32_BE( hi, h, 0 );
elessair 0:f269e3021894 115 GET_UINT32_BE( lo, h, 4 );
elessair 0:f269e3021894 116 vh = (uint64_t) hi << 32 | lo;
elessair 0:f269e3021894 117
elessair 0:f269e3021894 118 GET_UINT32_BE( hi, h, 8 );
elessair 0:f269e3021894 119 GET_UINT32_BE( lo, h, 12 );
elessair 0:f269e3021894 120 vl = (uint64_t) hi << 32 | lo;
elessair 0:f269e3021894 121
elessair 0:f269e3021894 122 /* 8 = 1000 corresponds to 1 in GF(2^128) */
elessair 0:f269e3021894 123 ctx->HL[8] = vl;
elessair 0:f269e3021894 124 ctx->HH[8] = vh;
elessair 0:f269e3021894 125
elessair 0:f269e3021894 126 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
elessair 0:f269e3021894 127 /* With CLMUL support, we need only h, not the rest of the table */
elessair 0:f269e3021894 128 if( mbedtls_aesni_has_support( MBEDTLS_AESNI_CLMUL ) )
elessair 0:f269e3021894 129 return( 0 );
elessair 0:f269e3021894 130 #endif
elessair 0:f269e3021894 131
elessair 0:f269e3021894 132 /* 0 corresponds to 0 in GF(2^128) */
elessair 0:f269e3021894 133 ctx->HH[0] = 0;
elessair 0:f269e3021894 134 ctx->HL[0] = 0;
elessair 0:f269e3021894 135
elessair 0:f269e3021894 136 for( i = 4; i > 0; i >>= 1 )
elessair 0:f269e3021894 137 {
elessair 0:f269e3021894 138 uint32_t T = ( vl & 1 ) * 0xe1000000U;
elessair 0:f269e3021894 139 vl = ( vh << 63 ) | ( vl >> 1 );
elessair 0:f269e3021894 140 vh = ( vh >> 1 ) ^ ( (uint64_t) T << 32);
elessair 0:f269e3021894 141
elessair 0:f269e3021894 142 ctx->HL[i] = vl;
elessair 0:f269e3021894 143 ctx->HH[i] = vh;
elessair 0:f269e3021894 144 }
elessair 0:f269e3021894 145
elessair 0:f269e3021894 146 for( i = 2; i <= 8; i *= 2 )
elessair 0:f269e3021894 147 {
elessair 0:f269e3021894 148 uint64_t *HiL = ctx->HL + i, *HiH = ctx->HH + i;
elessair 0:f269e3021894 149 vh = *HiH;
elessair 0:f269e3021894 150 vl = *HiL;
elessair 0:f269e3021894 151 for( j = 1; j < i; j++ )
elessair 0:f269e3021894 152 {
elessair 0:f269e3021894 153 HiH[j] = vh ^ ctx->HH[j];
elessair 0:f269e3021894 154 HiL[j] = vl ^ ctx->HL[j];
elessair 0:f269e3021894 155 }
elessair 0:f269e3021894 156 }
elessair 0:f269e3021894 157
elessair 0:f269e3021894 158 return( 0 );
elessair 0:f269e3021894 159 }
elessair 0:f269e3021894 160
elessair 0:f269e3021894 161 int mbedtls_gcm_setkey( mbedtls_gcm_context *ctx,
elessair 0:f269e3021894 162 mbedtls_cipher_id_t cipher,
elessair 0:f269e3021894 163 const unsigned char *key,
elessair 0:f269e3021894 164 unsigned int keybits )
elessair 0:f269e3021894 165 {
elessair 0:f269e3021894 166 int ret;
elessair 0:f269e3021894 167 const mbedtls_cipher_info_t *cipher_info;
elessair 0:f269e3021894 168
elessair 0:f269e3021894 169 cipher_info = mbedtls_cipher_info_from_values( cipher, keybits, MBEDTLS_MODE_ECB );
elessair 0:f269e3021894 170 if( cipher_info == NULL )
elessair 0:f269e3021894 171 return( MBEDTLS_ERR_GCM_BAD_INPUT );
elessair 0:f269e3021894 172
elessair 0:f269e3021894 173 if( cipher_info->block_size != 16 )
elessair 0:f269e3021894 174 return( MBEDTLS_ERR_GCM_BAD_INPUT );
elessair 0:f269e3021894 175
elessair 0:f269e3021894 176 mbedtls_cipher_free( &ctx->cipher_ctx );
elessair 0:f269e3021894 177
elessair 0:f269e3021894 178 if( ( ret = mbedtls_cipher_setup( &ctx->cipher_ctx, cipher_info ) ) != 0 )
elessair 0:f269e3021894 179 return( ret );
elessair 0:f269e3021894 180
elessair 0:f269e3021894 181 if( ( ret = mbedtls_cipher_setkey( &ctx->cipher_ctx, key, keybits,
elessair 0:f269e3021894 182 MBEDTLS_ENCRYPT ) ) != 0 )
elessair 0:f269e3021894 183 {
elessair 0:f269e3021894 184 return( ret );
elessair 0:f269e3021894 185 }
elessair 0:f269e3021894 186
elessair 0:f269e3021894 187 if( ( ret = gcm_gen_table( ctx ) ) != 0 )
elessair 0:f269e3021894 188 return( ret );
elessair 0:f269e3021894 189
elessair 0:f269e3021894 190 return( 0 );
elessair 0:f269e3021894 191 }
elessair 0:f269e3021894 192
elessair 0:f269e3021894 193 /*
elessair 0:f269e3021894 194 * Shoup's method for multiplication use this table with
elessair 0:f269e3021894 195 * last4[x] = x times P^128
elessair 0:f269e3021894 196 * where x and last4[x] are seen as elements of GF(2^128) as in [MGV]
elessair 0:f269e3021894 197 */
elessair 0:f269e3021894 198 static const uint64_t last4[16] =
elessair 0:f269e3021894 199 {
elessair 0:f269e3021894 200 0x0000, 0x1c20, 0x3840, 0x2460,
elessair 0:f269e3021894 201 0x7080, 0x6ca0, 0x48c0, 0x54e0,
elessair 0:f269e3021894 202 0xe100, 0xfd20, 0xd940, 0xc560,
elessair 0:f269e3021894 203 0x9180, 0x8da0, 0xa9c0, 0xb5e0
elessair 0:f269e3021894 204 };
elessair 0:f269e3021894 205
elessair 0:f269e3021894 206 /*
elessair 0:f269e3021894 207 * Sets output to x times H using the precomputed tables.
elessair 0:f269e3021894 208 * x and output are seen as elements of GF(2^128) as in [MGV].
elessair 0:f269e3021894 209 */
elessair 0:f269e3021894 210 static void gcm_mult( mbedtls_gcm_context *ctx, const unsigned char x[16],
elessair 0:f269e3021894 211 unsigned char output[16] )
elessair 0:f269e3021894 212 {
elessair 0:f269e3021894 213 int i = 0;
elessair 0:f269e3021894 214 unsigned char lo, hi, rem;
elessair 0:f269e3021894 215 uint64_t zh, zl;
elessair 0:f269e3021894 216
elessair 0:f269e3021894 217 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
elessair 0:f269e3021894 218 if( mbedtls_aesni_has_support( MBEDTLS_AESNI_CLMUL ) ) {
elessair 0:f269e3021894 219 unsigned char h[16];
elessair 0:f269e3021894 220
elessair 0:f269e3021894 221 PUT_UINT32_BE( ctx->HH[8] >> 32, h, 0 );
elessair 0:f269e3021894 222 PUT_UINT32_BE( ctx->HH[8], h, 4 );
elessair 0:f269e3021894 223 PUT_UINT32_BE( ctx->HL[8] >> 32, h, 8 );
elessair 0:f269e3021894 224 PUT_UINT32_BE( ctx->HL[8], h, 12 );
elessair 0:f269e3021894 225
elessair 0:f269e3021894 226 mbedtls_aesni_gcm_mult( output, x, h );
elessair 0:f269e3021894 227 return;
elessair 0:f269e3021894 228 }
elessair 0:f269e3021894 229 #endif /* MBEDTLS_AESNI_C && MBEDTLS_HAVE_X86_64 */
elessair 0:f269e3021894 230
elessair 0:f269e3021894 231 lo = x[15] & 0xf;
elessair 0:f269e3021894 232
elessair 0:f269e3021894 233 zh = ctx->HH[lo];
elessair 0:f269e3021894 234 zl = ctx->HL[lo];
elessair 0:f269e3021894 235
elessair 0:f269e3021894 236 for( i = 15; i >= 0; i-- )
elessair 0:f269e3021894 237 {
elessair 0:f269e3021894 238 lo = x[i] & 0xf;
elessair 0:f269e3021894 239 hi = x[i] >> 4;
elessair 0:f269e3021894 240
elessair 0:f269e3021894 241 if( i != 15 )
elessair 0:f269e3021894 242 {
elessair 0:f269e3021894 243 rem = (unsigned char) zl & 0xf;
elessair 0:f269e3021894 244 zl = ( zh << 60 ) | ( zl >> 4 );
elessair 0:f269e3021894 245 zh = ( zh >> 4 );
elessair 0:f269e3021894 246 zh ^= (uint64_t) last4[rem] << 48;
elessair 0:f269e3021894 247 zh ^= ctx->HH[lo];
elessair 0:f269e3021894 248 zl ^= ctx->HL[lo];
elessair 0:f269e3021894 249
elessair 0:f269e3021894 250 }
elessair 0:f269e3021894 251
elessair 0:f269e3021894 252 rem = (unsigned char) zl & 0xf;
elessair 0:f269e3021894 253 zl = ( zh << 60 ) | ( zl >> 4 );
elessair 0:f269e3021894 254 zh = ( zh >> 4 );
elessair 0:f269e3021894 255 zh ^= (uint64_t) last4[rem] << 48;
elessair 0:f269e3021894 256 zh ^= ctx->HH[hi];
elessair 0:f269e3021894 257 zl ^= ctx->HL[hi];
elessair 0:f269e3021894 258 }
elessair 0:f269e3021894 259
elessair 0:f269e3021894 260 PUT_UINT32_BE( zh >> 32, output, 0 );
elessair 0:f269e3021894 261 PUT_UINT32_BE( zh, output, 4 );
elessair 0:f269e3021894 262 PUT_UINT32_BE( zl >> 32, output, 8 );
elessair 0:f269e3021894 263 PUT_UINT32_BE( zl, output, 12 );
elessair 0:f269e3021894 264 }
elessair 0:f269e3021894 265
elessair 0:f269e3021894 266 int mbedtls_gcm_starts( mbedtls_gcm_context *ctx,
elessair 0:f269e3021894 267 int mode,
elessair 0:f269e3021894 268 const unsigned char *iv,
elessair 0:f269e3021894 269 size_t iv_len,
elessair 0:f269e3021894 270 const unsigned char *add,
elessair 0:f269e3021894 271 size_t add_len )
elessair 0:f269e3021894 272 {
elessair 0:f269e3021894 273 int ret;
elessair 0:f269e3021894 274 unsigned char work_buf[16];
elessair 0:f269e3021894 275 size_t i;
elessair 0:f269e3021894 276 const unsigned char *p;
elessair 0:f269e3021894 277 size_t use_len, olen = 0;
elessair 0:f269e3021894 278
elessair 0:f269e3021894 279 /* IV and AD are limited to 2^64 bits, so 2^61 bytes */
elessair 0:f269e3021894 280 if( ( (uint64_t) iv_len ) >> 61 != 0 ||
elessair 0:f269e3021894 281 ( (uint64_t) add_len ) >> 61 != 0 )
elessair 0:f269e3021894 282 {
elessair 0:f269e3021894 283 return( MBEDTLS_ERR_GCM_BAD_INPUT );
elessair 0:f269e3021894 284 }
elessair 0:f269e3021894 285
elessair 0:f269e3021894 286 memset( ctx->y, 0x00, sizeof(ctx->y) );
elessair 0:f269e3021894 287 memset( ctx->buf, 0x00, sizeof(ctx->buf) );
elessair 0:f269e3021894 288
elessair 0:f269e3021894 289 ctx->mode = mode;
elessair 0:f269e3021894 290 ctx->len = 0;
elessair 0:f269e3021894 291 ctx->add_len = 0;
elessair 0:f269e3021894 292
elessair 0:f269e3021894 293 if( iv_len == 12 )
elessair 0:f269e3021894 294 {
elessair 0:f269e3021894 295 memcpy( ctx->y, iv, iv_len );
elessair 0:f269e3021894 296 ctx->y[15] = 1;
elessair 0:f269e3021894 297 }
elessair 0:f269e3021894 298 else
elessair 0:f269e3021894 299 {
elessair 0:f269e3021894 300 memset( work_buf, 0x00, 16 );
elessair 0:f269e3021894 301 PUT_UINT32_BE( iv_len * 8, work_buf, 12 );
elessair 0:f269e3021894 302
elessair 0:f269e3021894 303 p = iv;
elessair 0:f269e3021894 304 while( iv_len > 0 )
elessair 0:f269e3021894 305 {
elessair 0:f269e3021894 306 use_len = ( iv_len < 16 ) ? iv_len : 16;
elessair 0:f269e3021894 307
elessair 0:f269e3021894 308 for( i = 0; i < use_len; i++ )
elessair 0:f269e3021894 309 ctx->y[i] ^= p[i];
elessair 0:f269e3021894 310
elessair 0:f269e3021894 311 gcm_mult( ctx, ctx->y, ctx->y );
elessair 0:f269e3021894 312
elessair 0:f269e3021894 313 iv_len -= use_len;
elessair 0:f269e3021894 314 p += use_len;
elessair 0:f269e3021894 315 }
elessair 0:f269e3021894 316
elessair 0:f269e3021894 317 for( i = 0; i < 16; i++ )
elessair 0:f269e3021894 318 ctx->y[i] ^= work_buf[i];
elessair 0:f269e3021894 319
elessair 0:f269e3021894 320 gcm_mult( ctx, ctx->y, ctx->y );
elessair 0:f269e3021894 321 }
elessair 0:f269e3021894 322
elessair 0:f269e3021894 323 if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ctx->base_ectr,
elessair 0:f269e3021894 324 &olen ) ) != 0 )
elessair 0:f269e3021894 325 {
elessair 0:f269e3021894 326 return( ret );
elessair 0:f269e3021894 327 }
elessair 0:f269e3021894 328
elessair 0:f269e3021894 329 ctx->add_len = add_len;
elessair 0:f269e3021894 330 p = add;
elessair 0:f269e3021894 331 while( add_len > 0 )
elessair 0:f269e3021894 332 {
elessair 0:f269e3021894 333 use_len = ( add_len < 16 ) ? add_len : 16;
elessair 0:f269e3021894 334
elessair 0:f269e3021894 335 for( i = 0; i < use_len; i++ )
elessair 0:f269e3021894 336 ctx->buf[i] ^= p[i];
elessair 0:f269e3021894 337
elessair 0:f269e3021894 338 gcm_mult( ctx, ctx->buf, ctx->buf );
elessair 0:f269e3021894 339
elessair 0:f269e3021894 340 add_len -= use_len;
elessair 0:f269e3021894 341 p += use_len;
elessair 0:f269e3021894 342 }
elessair 0:f269e3021894 343
elessair 0:f269e3021894 344 return( 0 );
elessair 0:f269e3021894 345 }
elessair 0:f269e3021894 346
elessair 0:f269e3021894 347 int mbedtls_gcm_update( mbedtls_gcm_context *ctx,
elessair 0:f269e3021894 348 size_t length,
elessair 0:f269e3021894 349 const unsigned char *input,
elessair 0:f269e3021894 350 unsigned char *output )
elessair 0:f269e3021894 351 {
elessair 0:f269e3021894 352 int ret;
elessair 0:f269e3021894 353 unsigned char ectr[16];
elessair 0:f269e3021894 354 size_t i;
elessair 0:f269e3021894 355 const unsigned char *p;
elessair 0:f269e3021894 356 unsigned char *out_p = output;
elessair 0:f269e3021894 357 size_t use_len, olen = 0;
elessair 0:f269e3021894 358
elessair 0:f269e3021894 359 if( output > input && (size_t) ( output - input ) < length )
elessair 0:f269e3021894 360 return( MBEDTLS_ERR_GCM_BAD_INPUT );
elessair 0:f269e3021894 361
elessair 0:f269e3021894 362 /* Total length is restricted to 2^39 - 256 bits, ie 2^36 - 2^5 bytes
elessair 0:f269e3021894 363 * Also check for possible overflow */
elessair 0:f269e3021894 364 if( ctx->len + length < ctx->len ||
elessair 0:f269e3021894 365 (uint64_t) ctx->len + length > 0xFFFFFFFE0ull )
elessair 0:f269e3021894 366 {
elessair 0:f269e3021894 367 return( MBEDTLS_ERR_GCM_BAD_INPUT );
elessair 0:f269e3021894 368 }
elessair 0:f269e3021894 369
elessair 0:f269e3021894 370 ctx->len += length;
elessair 0:f269e3021894 371
elessair 0:f269e3021894 372 p = input;
elessair 0:f269e3021894 373 while( length > 0 )
elessair 0:f269e3021894 374 {
elessair 0:f269e3021894 375 use_len = ( length < 16 ) ? length : 16;
elessair 0:f269e3021894 376
elessair 0:f269e3021894 377 for( i = 16; i > 12; i-- )
elessair 0:f269e3021894 378 if( ++ctx->y[i - 1] != 0 )
elessair 0:f269e3021894 379 break;
elessair 0:f269e3021894 380
elessair 0:f269e3021894 381 if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ectr,
elessair 0:f269e3021894 382 &olen ) ) != 0 )
elessair 0:f269e3021894 383 {
elessair 0:f269e3021894 384 return( ret );
elessair 0:f269e3021894 385 }
elessair 0:f269e3021894 386
elessair 0:f269e3021894 387 for( i = 0; i < use_len; i++ )
elessair 0:f269e3021894 388 {
elessair 0:f269e3021894 389 if( ctx->mode == MBEDTLS_GCM_DECRYPT )
elessair 0:f269e3021894 390 ctx->buf[i] ^= p[i];
elessair 0:f269e3021894 391 out_p[i] = ectr[i] ^ p[i];
elessair 0:f269e3021894 392 if( ctx->mode == MBEDTLS_GCM_ENCRYPT )
elessair 0:f269e3021894 393 ctx->buf[i] ^= out_p[i];
elessair 0:f269e3021894 394 }
elessair 0:f269e3021894 395
elessair 0:f269e3021894 396 gcm_mult( ctx, ctx->buf, ctx->buf );
elessair 0:f269e3021894 397
elessair 0:f269e3021894 398 length -= use_len;
elessair 0:f269e3021894 399 p += use_len;
elessair 0:f269e3021894 400 out_p += use_len;
elessair 0:f269e3021894 401 }
elessair 0:f269e3021894 402
elessair 0:f269e3021894 403 return( 0 );
elessair 0:f269e3021894 404 }
elessair 0:f269e3021894 405
elessair 0:f269e3021894 406 int mbedtls_gcm_finish( mbedtls_gcm_context *ctx,
elessair 0:f269e3021894 407 unsigned char *tag,
elessair 0:f269e3021894 408 size_t tag_len )
elessair 0:f269e3021894 409 {
elessair 0:f269e3021894 410 unsigned char work_buf[16];
elessair 0:f269e3021894 411 size_t i;
elessair 0:f269e3021894 412 uint64_t orig_len = ctx->len * 8;
elessair 0:f269e3021894 413 uint64_t orig_add_len = ctx->add_len * 8;
elessair 0:f269e3021894 414
elessair 0:f269e3021894 415 if( tag_len > 16 || tag_len < 4 )
elessair 0:f269e3021894 416 return( MBEDTLS_ERR_GCM_BAD_INPUT );
elessair 0:f269e3021894 417
elessair 0:f269e3021894 418 memcpy( tag, ctx->base_ectr, tag_len );
elessair 0:f269e3021894 419
elessair 0:f269e3021894 420 if( orig_len || orig_add_len )
elessair 0:f269e3021894 421 {
elessair 0:f269e3021894 422 memset( work_buf, 0x00, 16 );
elessair 0:f269e3021894 423
elessair 0:f269e3021894 424 PUT_UINT32_BE( ( orig_add_len >> 32 ), work_buf, 0 );
elessair 0:f269e3021894 425 PUT_UINT32_BE( ( orig_add_len ), work_buf, 4 );
elessair 0:f269e3021894 426 PUT_UINT32_BE( ( orig_len >> 32 ), work_buf, 8 );
elessair 0:f269e3021894 427 PUT_UINT32_BE( ( orig_len ), work_buf, 12 );
elessair 0:f269e3021894 428
elessair 0:f269e3021894 429 for( i = 0; i < 16; i++ )
elessair 0:f269e3021894 430 ctx->buf[i] ^= work_buf[i];
elessair 0:f269e3021894 431
elessair 0:f269e3021894 432 gcm_mult( ctx, ctx->buf, ctx->buf );
elessair 0:f269e3021894 433
elessair 0:f269e3021894 434 for( i = 0; i < tag_len; i++ )
elessair 0:f269e3021894 435 tag[i] ^= ctx->buf[i];
elessair 0:f269e3021894 436 }
elessair 0:f269e3021894 437
elessair 0:f269e3021894 438 return( 0 );
elessair 0:f269e3021894 439 }
elessair 0:f269e3021894 440
elessair 0:f269e3021894 441 int mbedtls_gcm_crypt_and_tag( mbedtls_gcm_context *ctx,
elessair 0:f269e3021894 442 int mode,
elessair 0:f269e3021894 443 size_t length,
elessair 0:f269e3021894 444 const unsigned char *iv,
elessair 0:f269e3021894 445 size_t iv_len,
elessair 0:f269e3021894 446 const unsigned char *add,
elessair 0:f269e3021894 447 size_t add_len,
elessair 0:f269e3021894 448 const unsigned char *input,
elessair 0:f269e3021894 449 unsigned char *output,
elessair 0:f269e3021894 450 size_t tag_len,
elessair 0:f269e3021894 451 unsigned char *tag )
elessair 0:f269e3021894 452 {
elessair 0:f269e3021894 453 int ret;
elessair 0:f269e3021894 454
elessair 0:f269e3021894 455 if( ( ret = mbedtls_gcm_starts( ctx, mode, iv, iv_len, add, add_len ) ) != 0 )
elessair 0:f269e3021894 456 return( ret );
elessair 0:f269e3021894 457
elessair 0:f269e3021894 458 if( ( ret = mbedtls_gcm_update( ctx, length, input, output ) ) != 0 )
elessair 0:f269e3021894 459 return( ret );
elessair 0:f269e3021894 460
elessair 0:f269e3021894 461 if( ( ret = mbedtls_gcm_finish( ctx, tag, tag_len ) ) != 0 )
elessair 0:f269e3021894 462 return( ret );
elessair 0:f269e3021894 463
elessair 0:f269e3021894 464 return( 0 );
elessair 0:f269e3021894 465 }
elessair 0:f269e3021894 466
elessair 0:f269e3021894 467 int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx,
elessair 0:f269e3021894 468 size_t length,
elessair 0:f269e3021894 469 const unsigned char *iv,
elessair 0:f269e3021894 470 size_t iv_len,
elessair 0:f269e3021894 471 const unsigned char *add,
elessair 0:f269e3021894 472 size_t add_len,
elessair 0:f269e3021894 473 const unsigned char *tag,
elessair 0:f269e3021894 474 size_t tag_len,
elessair 0:f269e3021894 475 const unsigned char *input,
elessair 0:f269e3021894 476 unsigned char *output )
elessair 0:f269e3021894 477 {
elessair 0:f269e3021894 478 int ret;
elessair 0:f269e3021894 479 unsigned char check_tag[16];
elessair 0:f269e3021894 480 size_t i;
elessair 0:f269e3021894 481 int diff;
elessair 0:f269e3021894 482
elessair 0:f269e3021894 483 if( ( ret = mbedtls_gcm_crypt_and_tag( ctx, MBEDTLS_GCM_DECRYPT, length,
elessair 0:f269e3021894 484 iv, iv_len, add, add_len,
elessair 0:f269e3021894 485 input, output, tag_len, check_tag ) ) != 0 )
elessair 0:f269e3021894 486 {
elessair 0:f269e3021894 487 return( ret );
elessair 0:f269e3021894 488 }
elessair 0:f269e3021894 489
elessair 0:f269e3021894 490 /* Check tag in "constant-time" */
elessair 0:f269e3021894 491 for( diff = 0, i = 0; i < tag_len; i++ )
elessair 0:f269e3021894 492 diff |= tag[i] ^ check_tag[i];
elessair 0:f269e3021894 493
elessair 0:f269e3021894 494 if( diff != 0 )
elessair 0:f269e3021894 495 {
elessair 0:f269e3021894 496 mbedtls_zeroize( output, length );
elessair 0:f269e3021894 497 return( MBEDTLS_ERR_GCM_AUTH_FAILED );
elessair 0:f269e3021894 498 }
elessair 0:f269e3021894 499
elessair 0:f269e3021894 500 return( 0 );
elessair 0:f269e3021894 501 }
elessair 0:f269e3021894 502
elessair 0:f269e3021894 503 void mbedtls_gcm_free( mbedtls_gcm_context *ctx )
elessair 0:f269e3021894 504 {
elessair 0:f269e3021894 505 mbedtls_cipher_free( &ctx->cipher_ctx );
elessair 0:f269e3021894 506 mbedtls_zeroize( ctx, sizeof( mbedtls_gcm_context ) );
elessair 0:f269e3021894 507 }
elessair 0:f269e3021894 508
elessair 0:f269e3021894 509 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
elessair 0:f269e3021894 510 /*
elessair 0:f269e3021894 511 * AES-GCM test vectors from:
elessair 0:f269e3021894 512 *
elessair 0:f269e3021894 513 * http://csrc.nist.gov/groups/STM/cavp/documents/mac/gcmtestvectors.zip
elessair 0:f269e3021894 514 */
elessair 0:f269e3021894 515 #define MAX_TESTS 6
elessair 0:f269e3021894 516
elessair 0:f269e3021894 517 static const int key_index[MAX_TESTS] =
elessair 0:f269e3021894 518 { 0, 0, 1, 1, 1, 1 };
elessair 0:f269e3021894 519
elessair 0:f269e3021894 520 static const unsigned char key[MAX_TESTS][32] =
elessair 0:f269e3021894 521 {
elessair 0:f269e3021894 522 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
elessair 0:f269e3021894 523 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
elessair 0:f269e3021894 524 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
elessair 0:f269e3021894 525 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
elessair 0:f269e3021894 526 { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
elessair 0:f269e3021894 527 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
elessair 0:f269e3021894 528 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
elessair 0:f269e3021894 529 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08 },
elessair 0:f269e3021894 530 };
elessair 0:f269e3021894 531
elessair 0:f269e3021894 532 static const size_t iv_len[MAX_TESTS] =
elessair 0:f269e3021894 533 { 12, 12, 12, 12, 8, 60 };
elessair 0:f269e3021894 534
elessair 0:f269e3021894 535 static const int iv_index[MAX_TESTS] =
elessair 0:f269e3021894 536 { 0, 0, 1, 1, 1, 2 };
elessair 0:f269e3021894 537
elessair 0:f269e3021894 538 static const unsigned char iv[MAX_TESTS][64] =
elessair 0:f269e3021894 539 {
elessair 0:f269e3021894 540 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
elessair 0:f269e3021894 541 0x00, 0x00, 0x00, 0x00 },
elessair 0:f269e3021894 542 { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
elessair 0:f269e3021894 543 0xde, 0xca, 0xf8, 0x88 },
elessair 0:f269e3021894 544 { 0x93, 0x13, 0x22, 0x5d, 0xf8, 0x84, 0x06, 0xe5,
elessair 0:f269e3021894 545 0x55, 0x90, 0x9c, 0x5a, 0xff, 0x52, 0x69, 0xaa,
elessair 0:f269e3021894 546 0x6a, 0x7a, 0x95, 0x38, 0x53, 0x4f, 0x7d, 0xa1,
elessair 0:f269e3021894 547 0xe4, 0xc3, 0x03, 0xd2, 0xa3, 0x18, 0xa7, 0x28,
elessair 0:f269e3021894 548 0xc3, 0xc0, 0xc9, 0x51, 0x56, 0x80, 0x95, 0x39,
elessair 0:f269e3021894 549 0xfc, 0xf0, 0xe2, 0x42, 0x9a, 0x6b, 0x52, 0x54,
elessair 0:f269e3021894 550 0x16, 0xae, 0xdb, 0xf5, 0xa0, 0xde, 0x6a, 0x57,
elessair 0:f269e3021894 551 0xa6, 0x37, 0xb3, 0x9b },
elessair 0:f269e3021894 552 };
elessair 0:f269e3021894 553
elessair 0:f269e3021894 554 static const size_t add_len[MAX_TESTS] =
elessair 0:f269e3021894 555 { 0, 0, 0, 20, 20, 20 };
elessair 0:f269e3021894 556
elessair 0:f269e3021894 557 static const int add_index[MAX_TESTS] =
elessair 0:f269e3021894 558 { 0, 0, 0, 1, 1, 1 };
elessair 0:f269e3021894 559
elessair 0:f269e3021894 560 static const unsigned char additional[MAX_TESTS][64] =
elessair 0:f269e3021894 561 {
elessair 0:f269e3021894 562 { 0x00 },
elessair 0:f269e3021894 563 { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
elessair 0:f269e3021894 564 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
elessair 0:f269e3021894 565 0xab, 0xad, 0xda, 0xd2 },
elessair 0:f269e3021894 566 };
elessair 0:f269e3021894 567
elessair 0:f269e3021894 568 static const size_t pt_len[MAX_TESTS] =
elessair 0:f269e3021894 569 { 0, 16, 64, 60, 60, 60 };
elessair 0:f269e3021894 570
elessair 0:f269e3021894 571 static const int pt_index[MAX_TESTS] =
elessair 0:f269e3021894 572 { 0, 0, 1, 1, 1, 1 };
elessair 0:f269e3021894 573
elessair 0:f269e3021894 574 static const unsigned char pt[MAX_TESTS][64] =
elessair 0:f269e3021894 575 {
elessair 0:f269e3021894 576 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
elessair 0:f269e3021894 577 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
elessair 0:f269e3021894 578 { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
elessair 0:f269e3021894 579 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
elessair 0:f269e3021894 580 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
elessair 0:f269e3021894 581 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
elessair 0:f269e3021894 582 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
elessair 0:f269e3021894 583 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
elessair 0:f269e3021894 584 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
elessair 0:f269e3021894 585 0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55 },
elessair 0:f269e3021894 586 };
elessair 0:f269e3021894 587
elessair 0:f269e3021894 588 static const unsigned char ct[MAX_TESTS * 3][64] =
elessair 0:f269e3021894 589 {
elessair 0:f269e3021894 590 { 0x00 },
elessair 0:f269e3021894 591 { 0x03, 0x88, 0xda, 0xce, 0x60, 0xb6, 0xa3, 0x92,
elessair 0:f269e3021894 592 0xf3, 0x28, 0xc2, 0xb9, 0x71, 0xb2, 0xfe, 0x78 },
elessair 0:f269e3021894 593 { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
elessair 0:f269e3021894 594 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
elessair 0:f269e3021894 595 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
elessair 0:f269e3021894 596 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
elessair 0:f269e3021894 597 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
elessair 0:f269e3021894 598 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
elessair 0:f269e3021894 599 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
elessair 0:f269e3021894 600 0x3d, 0x58, 0xe0, 0x91, 0x47, 0x3f, 0x59, 0x85 },
elessair 0:f269e3021894 601 { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
elessair 0:f269e3021894 602 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
elessair 0:f269e3021894 603 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
elessair 0:f269e3021894 604 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
elessair 0:f269e3021894 605 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
elessair 0:f269e3021894 606 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
elessair 0:f269e3021894 607 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
elessair 0:f269e3021894 608 0x3d, 0x58, 0xe0, 0x91 },
elessair 0:f269e3021894 609 { 0x61, 0x35, 0x3b, 0x4c, 0x28, 0x06, 0x93, 0x4a,
elessair 0:f269e3021894 610 0x77, 0x7f, 0xf5, 0x1f, 0xa2, 0x2a, 0x47, 0x55,
elessair 0:f269e3021894 611 0x69, 0x9b, 0x2a, 0x71, 0x4f, 0xcd, 0xc6, 0xf8,
elessair 0:f269e3021894 612 0x37, 0x66, 0xe5, 0xf9, 0x7b, 0x6c, 0x74, 0x23,
elessair 0:f269e3021894 613 0x73, 0x80, 0x69, 0x00, 0xe4, 0x9f, 0x24, 0xb2,
elessair 0:f269e3021894 614 0x2b, 0x09, 0x75, 0x44, 0xd4, 0x89, 0x6b, 0x42,
elessair 0:f269e3021894 615 0x49, 0x89, 0xb5, 0xe1, 0xeb, 0xac, 0x0f, 0x07,
elessair 0:f269e3021894 616 0xc2, 0x3f, 0x45, 0x98 },
elessair 0:f269e3021894 617 { 0x8c, 0xe2, 0x49, 0x98, 0x62, 0x56, 0x15, 0xb6,
elessair 0:f269e3021894 618 0x03, 0xa0, 0x33, 0xac, 0xa1, 0x3f, 0xb8, 0x94,
elessair 0:f269e3021894 619 0xbe, 0x91, 0x12, 0xa5, 0xc3, 0xa2, 0x11, 0xa8,
elessair 0:f269e3021894 620 0xba, 0x26, 0x2a, 0x3c, 0xca, 0x7e, 0x2c, 0xa7,
elessair 0:f269e3021894 621 0x01, 0xe4, 0xa9, 0xa4, 0xfb, 0xa4, 0x3c, 0x90,
elessair 0:f269e3021894 622 0xcc, 0xdc, 0xb2, 0x81, 0xd4, 0x8c, 0x7c, 0x6f,
elessair 0:f269e3021894 623 0xd6, 0x28, 0x75, 0xd2, 0xac, 0xa4, 0x17, 0x03,
elessair 0:f269e3021894 624 0x4c, 0x34, 0xae, 0xe5 },
elessair 0:f269e3021894 625 { 0x00 },
elessair 0:f269e3021894 626 { 0x98, 0xe7, 0x24, 0x7c, 0x07, 0xf0, 0xfe, 0x41,
elessair 0:f269e3021894 627 0x1c, 0x26, 0x7e, 0x43, 0x84, 0xb0, 0xf6, 0x00 },
elessair 0:f269e3021894 628 { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
elessair 0:f269e3021894 629 0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
elessair 0:f269e3021894 630 0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
elessair 0:f269e3021894 631 0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
elessair 0:f269e3021894 632 0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
elessair 0:f269e3021894 633 0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
elessair 0:f269e3021894 634 0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
elessair 0:f269e3021894 635 0xcc, 0xda, 0x27, 0x10, 0xac, 0xad, 0xe2, 0x56 },
elessair 0:f269e3021894 636 { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
elessair 0:f269e3021894 637 0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
elessair 0:f269e3021894 638 0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
elessair 0:f269e3021894 639 0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
elessair 0:f269e3021894 640 0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
elessair 0:f269e3021894 641 0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
elessair 0:f269e3021894 642 0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
elessair 0:f269e3021894 643 0xcc, 0xda, 0x27, 0x10 },
elessair 0:f269e3021894 644 { 0x0f, 0x10, 0xf5, 0x99, 0xae, 0x14, 0xa1, 0x54,
elessair 0:f269e3021894 645 0xed, 0x24, 0xb3, 0x6e, 0x25, 0x32, 0x4d, 0xb8,
elessair 0:f269e3021894 646 0xc5, 0x66, 0x63, 0x2e, 0xf2, 0xbb, 0xb3, 0x4f,
elessair 0:f269e3021894 647 0x83, 0x47, 0x28, 0x0f, 0xc4, 0x50, 0x70, 0x57,
elessair 0:f269e3021894 648 0xfd, 0xdc, 0x29, 0xdf, 0x9a, 0x47, 0x1f, 0x75,
elessair 0:f269e3021894 649 0xc6, 0x65, 0x41, 0xd4, 0xd4, 0xda, 0xd1, 0xc9,
elessair 0:f269e3021894 650 0xe9, 0x3a, 0x19, 0xa5, 0x8e, 0x8b, 0x47, 0x3f,
elessair 0:f269e3021894 651 0xa0, 0xf0, 0x62, 0xf7 },
elessair 0:f269e3021894 652 { 0xd2, 0x7e, 0x88, 0x68, 0x1c, 0xe3, 0x24, 0x3c,
elessair 0:f269e3021894 653 0x48, 0x30, 0x16, 0x5a, 0x8f, 0xdc, 0xf9, 0xff,
elessair 0:f269e3021894 654 0x1d, 0xe9, 0xa1, 0xd8, 0xe6, 0xb4, 0x47, 0xef,
elessair 0:f269e3021894 655 0x6e, 0xf7, 0xb7, 0x98, 0x28, 0x66, 0x6e, 0x45,
elessair 0:f269e3021894 656 0x81, 0xe7, 0x90, 0x12, 0xaf, 0x34, 0xdd, 0xd9,
elessair 0:f269e3021894 657 0xe2, 0xf0, 0x37, 0x58, 0x9b, 0x29, 0x2d, 0xb3,
elessair 0:f269e3021894 658 0xe6, 0x7c, 0x03, 0x67, 0x45, 0xfa, 0x22, 0xe7,
elessair 0:f269e3021894 659 0xe9, 0xb7, 0x37, 0x3b },
elessair 0:f269e3021894 660 { 0x00 },
elessair 0:f269e3021894 661 { 0xce, 0xa7, 0x40, 0x3d, 0x4d, 0x60, 0x6b, 0x6e,
elessair 0:f269e3021894 662 0x07, 0x4e, 0xc5, 0xd3, 0xba, 0xf3, 0x9d, 0x18 },
elessair 0:f269e3021894 663 { 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,
elessair 0:f269e3021894 664 0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,
elessair 0:f269e3021894 665 0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,
elessair 0:f269e3021894 666 0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,
elessair 0:f269e3021894 667 0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,
elessair 0:f269e3021894 668 0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,
elessair 0:f269e3021894 669 0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,
elessair 0:f269e3021894 670 0xbc, 0xc9, 0xf6, 0x62, 0x89, 0x80, 0x15, 0xad },
elessair 0:f269e3021894 671 { 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,
elessair 0:f269e3021894 672 0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,
elessair 0:f269e3021894 673 0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,
elessair 0:f269e3021894 674 0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,
elessair 0:f269e3021894 675 0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,
elessair 0:f269e3021894 676 0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,
elessair 0:f269e3021894 677 0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,
elessair 0:f269e3021894 678 0xbc, 0xc9, 0xf6, 0x62 },
elessair 0:f269e3021894 679 { 0xc3, 0x76, 0x2d, 0xf1, 0xca, 0x78, 0x7d, 0x32,
elessair 0:f269e3021894 680 0xae, 0x47, 0xc1, 0x3b, 0xf1, 0x98, 0x44, 0xcb,
elessair 0:f269e3021894 681 0xaf, 0x1a, 0xe1, 0x4d, 0x0b, 0x97, 0x6a, 0xfa,
elessair 0:f269e3021894 682 0xc5, 0x2f, 0xf7, 0xd7, 0x9b, 0xba, 0x9d, 0xe0,
elessair 0:f269e3021894 683 0xfe, 0xb5, 0x82, 0xd3, 0x39, 0x34, 0xa4, 0xf0,
elessair 0:f269e3021894 684 0x95, 0x4c, 0xc2, 0x36, 0x3b, 0xc7, 0x3f, 0x78,
elessair 0:f269e3021894 685 0x62, 0xac, 0x43, 0x0e, 0x64, 0xab, 0xe4, 0x99,
elessair 0:f269e3021894 686 0xf4, 0x7c, 0x9b, 0x1f },
elessair 0:f269e3021894 687 { 0x5a, 0x8d, 0xef, 0x2f, 0x0c, 0x9e, 0x53, 0xf1,
elessair 0:f269e3021894 688 0xf7, 0x5d, 0x78, 0x53, 0x65, 0x9e, 0x2a, 0x20,
elessair 0:f269e3021894 689 0xee, 0xb2, 0xb2, 0x2a, 0xaf, 0xde, 0x64, 0x19,
elessair 0:f269e3021894 690 0xa0, 0x58, 0xab, 0x4f, 0x6f, 0x74, 0x6b, 0xf4,
elessair 0:f269e3021894 691 0x0f, 0xc0, 0xc3, 0xb7, 0x80, 0xf2, 0x44, 0x45,
elessair 0:f269e3021894 692 0x2d, 0xa3, 0xeb, 0xf1, 0xc5, 0xd8, 0x2c, 0xde,
elessair 0:f269e3021894 693 0xa2, 0x41, 0x89, 0x97, 0x20, 0x0e, 0xf8, 0x2e,
elessair 0:f269e3021894 694 0x44, 0xae, 0x7e, 0x3f },
elessair 0:f269e3021894 695 };
elessair 0:f269e3021894 696
elessair 0:f269e3021894 697 static const unsigned char tag[MAX_TESTS * 3][16] =
elessair 0:f269e3021894 698 {
elessair 0:f269e3021894 699 { 0x58, 0xe2, 0xfc, 0xce, 0xfa, 0x7e, 0x30, 0x61,
elessair 0:f269e3021894 700 0x36, 0x7f, 0x1d, 0x57, 0xa4, 0xe7, 0x45, 0x5a },
elessair 0:f269e3021894 701 { 0xab, 0x6e, 0x47, 0xd4, 0x2c, 0xec, 0x13, 0xbd,
elessair 0:f269e3021894 702 0xf5, 0x3a, 0x67, 0xb2, 0x12, 0x57, 0xbd, 0xdf },
elessair 0:f269e3021894 703 { 0x4d, 0x5c, 0x2a, 0xf3, 0x27, 0xcd, 0x64, 0xa6,
elessair 0:f269e3021894 704 0x2c, 0xf3, 0x5a, 0xbd, 0x2b, 0xa6, 0xfa, 0xb4 },
elessair 0:f269e3021894 705 { 0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,
elessair 0:f269e3021894 706 0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47 },
elessair 0:f269e3021894 707 { 0x36, 0x12, 0xd2, 0xe7, 0x9e, 0x3b, 0x07, 0x85,
elessair 0:f269e3021894 708 0x56, 0x1b, 0xe1, 0x4a, 0xac, 0xa2, 0xfc, 0xcb },
elessair 0:f269e3021894 709 { 0x61, 0x9c, 0xc5, 0xae, 0xff, 0xfe, 0x0b, 0xfa,
elessair 0:f269e3021894 710 0x46, 0x2a, 0xf4, 0x3c, 0x16, 0x99, 0xd0, 0x50 },
elessair 0:f269e3021894 711 { 0xcd, 0x33, 0xb2, 0x8a, 0xc7, 0x73, 0xf7, 0x4b,
elessair 0:f269e3021894 712 0xa0, 0x0e, 0xd1, 0xf3, 0x12, 0x57, 0x24, 0x35 },
elessair 0:f269e3021894 713 { 0x2f, 0xf5, 0x8d, 0x80, 0x03, 0x39, 0x27, 0xab,
elessair 0:f269e3021894 714 0x8e, 0xf4, 0xd4, 0x58, 0x75, 0x14, 0xf0, 0xfb },
elessair 0:f269e3021894 715 { 0x99, 0x24, 0xa7, 0xc8, 0x58, 0x73, 0x36, 0xbf,
elessair 0:f269e3021894 716 0xb1, 0x18, 0x02, 0x4d, 0xb8, 0x67, 0x4a, 0x14 },
elessair 0:f269e3021894 717 { 0x25, 0x19, 0x49, 0x8e, 0x80, 0xf1, 0x47, 0x8f,
elessair 0:f269e3021894 718 0x37, 0xba, 0x55, 0xbd, 0x6d, 0x27, 0x61, 0x8c },
elessair 0:f269e3021894 719 { 0x65, 0xdc, 0xc5, 0x7f, 0xcf, 0x62, 0x3a, 0x24,
elessair 0:f269e3021894 720 0x09, 0x4f, 0xcc, 0xa4, 0x0d, 0x35, 0x33, 0xf8 },
elessair 0:f269e3021894 721 { 0xdc, 0xf5, 0x66, 0xff, 0x29, 0x1c, 0x25, 0xbb,
elessair 0:f269e3021894 722 0xb8, 0x56, 0x8f, 0xc3, 0xd3, 0x76, 0xa6, 0xd9 },
elessair 0:f269e3021894 723 { 0x53, 0x0f, 0x8a, 0xfb, 0xc7, 0x45, 0x36, 0xb9,
elessair 0:f269e3021894 724 0xa9, 0x63, 0xb4, 0xf1, 0xc4, 0xcb, 0x73, 0x8b },
elessair 0:f269e3021894 725 { 0xd0, 0xd1, 0xc8, 0xa7, 0x99, 0x99, 0x6b, 0xf0,
elessair 0:f269e3021894 726 0x26, 0x5b, 0x98, 0xb5, 0xd4, 0x8a, 0xb9, 0x19 },
elessair 0:f269e3021894 727 { 0xb0, 0x94, 0xda, 0xc5, 0xd9, 0x34, 0x71, 0xbd,
elessair 0:f269e3021894 728 0xec, 0x1a, 0x50, 0x22, 0x70, 0xe3, 0xcc, 0x6c },
elessair 0:f269e3021894 729 { 0x76, 0xfc, 0x6e, 0xce, 0x0f, 0x4e, 0x17, 0x68,
elessair 0:f269e3021894 730 0xcd, 0xdf, 0x88, 0x53, 0xbb, 0x2d, 0x55, 0x1b },
elessair 0:f269e3021894 731 { 0x3a, 0x33, 0x7d, 0xbf, 0x46, 0xa7, 0x92, 0xc4,
elessair 0:f269e3021894 732 0x5e, 0x45, 0x49, 0x13, 0xfe, 0x2e, 0xa8, 0xf2 },
elessair 0:f269e3021894 733 { 0xa4, 0x4a, 0x82, 0x66, 0xee, 0x1c, 0x8e, 0xb0,
elessair 0:f269e3021894 734 0xc8, 0xb5, 0xd4, 0xcf, 0x5a, 0xe9, 0xf1, 0x9a },
elessair 0:f269e3021894 735 };
elessair 0:f269e3021894 736
elessair 0:f269e3021894 737 int mbedtls_gcm_self_test( int verbose )
elessair 0:f269e3021894 738 {
elessair 0:f269e3021894 739 mbedtls_gcm_context ctx;
elessair 0:f269e3021894 740 unsigned char buf[64];
elessair 0:f269e3021894 741 unsigned char tag_buf[16];
elessair 0:f269e3021894 742 int i, j, ret;
elessair 0:f269e3021894 743 mbedtls_cipher_id_t cipher = MBEDTLS_CIPHER_ID_AES;
elessair 0:f269e3021894 744
elessair 0:f269e3021894 745 mbedtls_gcm_init( &ctx );
elessair 0:f269e3021894 746
elessair 0:f269e3021894 747 for( j = 0; j < 3; j++ )
elessair 0:f269e3021894 748 {
elessair 0:f269e3021894 749 int key_len = 128 + 64 * j;
elessair 0:f269e3021894 750
elessair 0:f269e3021894 751 for( i = 0; i < MAX_TESTS; i++ )
elessair 0:f269e3021894 752 {
elessair 0:f269e3021894 753 if( verbose != 0 )
elessair 0:f269e3021894 754 mbedtls_printf( " AES-GCM-%3d #%d (%s): ",
elessair 0:f269e3021894 755 key_len, i, "enc" );
elessair 0:f269e3021894 756
elessair 0:f269e3021894 757 mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]], key_len );
elessair 0:f269e3021894 758
elessair 0:f269e3021894 759 ret = mbedtls_gcm_crypt_and_tag( &ctx, MBEDTLS_GCM_ENCRYPT,
elessair 0:f269e3021894 760 pt_len[i],
elessair 0:f269e3021894 761 iv[iv_index[i]], iv_len[i],
elessair 0:f269e3021894 762 additional[add_index[i]], add_len[i],
elessair 0:f269e3021894 763 pt[pt_index[i]], buf, 16, tag_buf );
elessair 0:f269e3021894 764
elessair 0:f269e3021894 765 if( ret != 0 ||
elessair 0:f269e3021894 766 memcmp( buf, ct[j * 6 + i], pt_len[i] ) != 0 ||
elessair 0:f269e3021894 767 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
elessair 0:f269e3021894 768 {
elessair 0:f269e3021894 769 if( verbose != 0 )
elessair 0:f269e3021894 770 mbedtls_printf( "failed\n" );
elessair 0:f269e3021894 771
elessair 0:f269e3021894 772 return( 1 );
elessair 0:f269e3021894 773 }
elessair 0:f269e3021894 774
elessair 0:f269e3021894 775 mbedtls_gcm_free( &ctx );
elessair 0:f269e3021894 776
elessair 0:f269e3021894 777 if( verbose != 0 )
elessair 0:f269e3021894 778 mbedtls_printf( "passed\n" );
elessair 0:f269e3021894 779
elessair 0:f269e3021894 780 if( verbose != 0 )
elessair 0:f269e3021894 781 mbedtls_printf( " AES-GCM-%3d #%d (%s): ",
elessair 0:f269e3021894 782 key_len, i, "dec" );
elessair 0:f269e3021894 783
elessair 0:f269e3021894 784 mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]], key_len );
elessair 0:f269e3021894 785
elessair 0:f269e3021894 786 ret = mbedtls_gcm_crypt_and_tag( &ctx, MBEDTLS_GCM_DECRYPT,
elessair 0:f269e3021894 787 pt_len[i],
elessair 0:f269e3021894 788 iv[iv_index[i]], iv_len[i],
elessair 0:f269e3021894 789 additional[add_index[i]], add_len[i],
elessair 0:f269e3021894 790 ct[j * 6 + i], buf, 16, tag_buf );
elessair 0:f269e3021894 791
elessair 0:f269e3021894 792 if( ret != 0 ||
elessair 0:f269e3021894 793 memcmp( buf, pt[pt_index[i]], pt_len[i] ) != 0 ||
elessair 0:f269e3021894 794 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
elessair 0:f269e3021894 795 {
elessair 0:f269e3021894 796 if( verbose != 0 )
elessair 0:f269e3021894 797 mbedtls_printf( "failed\n" );
elessair 0:f269e3021894 798
elessair 0:f269e3021894 799 return( 1 );
elessair 0:f269e3021894 800 }
elessair 0:f269e3021894 801
elessair 0:f269e3021894 802 mbedtls_gcm_free( &ctx );
elessair 0:f269e3021894 803
elessair 0:f269e3021894 804 if( verbose != 0 )
elessair 0:f269e3021894 805 mbedtls_printf( "passed\n" );
elessair 0:f269e3021894 806
elessair 0:f269e3021894 807 if( verbose != 0 )
elessair 0:f269e3021894 808 mbedtls_printf( " AES-GCM-%3d #%d split (%s): ",
elessair 0:f269e3021894 809 key_len, i, "enc" );
elessair 0:f269e3021894 810
elessair 0:f269e3021894 811 mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]], key_len );
elessair 0:f269e3021894 812
elessair 0:f269e3021894 813 ret = mbedtls_gcm_starts( &ctx, MBEDTLS_GCM_ENCRYPT,
elessair 0:f269e3021894 814 iv[iv_index[i]], iv_len[i],
elessair 0:f269e3021894 815 additional[add_index[i]], add_len[i] );
elessair 0:f269e3021894 816 if( ret != 0 )
elessair 0:f269e3021894 817 {
elessair 0:f269e3021894 818 if( verbose != 0 )
elessair 0:f269e3021894 819 mbedtls_printf( "failed\n" );
elessair 0:f269e3021894 820
elessair 0:f269e3021894 821 return( 1 );
elessair 0:f269e3021894 822 }
elessair 0:f269e3021894 823
elessair 0:f269e3021894 824 if( pt_len[i] > 32 )
elessair 0:f269e3021894 825 {
elessair 0:f269e3021894 826 size_t rest_len = pt_len[i] - 32;
elessair 0:f269e3021894 827 ret = mbedtls_gcm_update( &ctx, 32, pt[pt_index[i]], buf );
elessair 0:f269e3021894 828 if( ret != 0 )
elessair 0:f269e3021894 829 {
elessair 0:f269e3021894 830 if( verbose != 0 )
elessair 0:f269e3021894 831 mbedtls_printf( "failed\n" );
elessair 0:f269e3021894 832
elessair 0:f269e3021894 833 return( 1 );
elessair 0:f269e3021894 834 }
elessair 0:f269e3021894 835
elessair 0:f269e3021894 836 ret = mbedtls_gcm_update( &ctx, rest_len, pt[pt_index[i]] + 32,
elessair 0:f269e3021894 837 buf + 32 );
elessair 0:f269e3021894 838 if( ret != 0 )
elessair 0:f269e3021894 839 {
elessair 0:f269e3021894 840 if( verbose != 0 )
elessair 0:f269e3021894 841 mbedtls_printf( "failed\n" );
elessair 0:f269e3021894 842
elessair 0:f269e3021894 843 return( 1 );
elessair 0:f269e3021894 844 }
elessair 0:f269e3021894 845 }
elessair 0:f269e3021894 846 else
elessair 0:f269e3021894 847 {
elessair 0:f269e3021894 848 ret = mbedtls_gcm_update( &ctx, pt_len[i], pt[pt_index[i]], buf );
elessair 0:f269e3021894 849 if( ret != 0 )
elessair 0:f269e3021894 850 {
elessair 0:f269e3021894 851 if( verbose != 0 )
elessair 0:f269e3021894 852 mbedtls_printf( "failed\n" );
elessair 0:f269e3021894 853
elessair 0:f269e3021894 854 return( 1 );
elessair 0:f269e3021894 855 }
elessair 0:f269e3021894 856 }
elessair 0:f269e3021894 857
elessair 0:f269e3021894 858 ret = mbedtls_gcm_finish( &ctx, tag_buf, 16 );
elessair 0:f269e3021894 859 if( ret != 0 ||
elessair 0:f269e3021894 860 memcmp( buf, ct[j * 6 + i], pt_len[i] ) != 0 ||
elessair 0:f269e3021894 861 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
elessair 0:f269e3021894 862 {
elessair 0:f269e3021894 863 if( verbose != 0 )
elessair 0:f269e3021894 864 mbedtls_printf( "failed\n" );
elessair 0:f269e3021894 865
elessair 0:f269e3021894 866 return( 1 );
elessair 0:f269e3021894 867 }
elessair 0:f269e3021894 868
elessair 0:f269e3021894 869 mbedtls_gcm_free( &ctx );
elessair 0:f269e3021894 870
elessair 0:f269e3021894 871 if( verbose != 0 )
elessair 0:f269e3021894 872 mbedtls_printf( "passed\n" );
elessair 0:f269e3021894 873
elessair 0:f269e3021894 874 if( verbose != 0 )
elessair 0:f269e3021894 875 mbedtls_printf( " AES-GCM-%3d #%d split (%s): ",
elessair 0:f269e3021894 876 key_len, i, "dec" );
elessair 0:f269e3021894 877
elessair 0:f269e3021894 878 mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]], key_len );
elessair 0:f269e3021894 879
elessair 0:f269e3021894 880 ret = mbedtls_gcm_starts( &ctx, MBEDTLS_GCM_DECRYPT,
elessair 0:f269e3021894 881 iv[iv_index[i]], iv_len[i],
elessair 0:f269e3021894 882 additional[add_index[i]], add_len[i] );
elessair 0:f269e3021894 883 if( ret != 0 )
elessair 0:f269e3021894 884 {
elessair 0:f269e3021894 885 if( verbose != 0 )
elessair 0:f269e3021894 886 mbedtls_printf( "failed\n" );
elessair 0:f269e3021894 887
elessair 0:f269e3021894 888 return( 1 );
elessair 0:f269e3021894 889 }
elessair 0:f269e3021894 890
elessair 0:f269e3021894 891 if( pt_len[i] > 32 )
elessair 0:f269e3021894 892 {
elessair 0:f269e3021894 893 size_t rest_len = pt_len[i] - 32;
elessair 0:f269e3021894 894 ret = mbedtls_gcm_update( &ctx, 32, ct[j * 6 + i], buf );
elessair 0:f269e3021894 895 if( ret != 0 )
elessair 0:f269e3021894 896 {
elessair 0:f269e3021894 897 if( verbose != 0 )
elessair 0:f269e3021894 898 mbedtls_printf( "failed\n" );
elessair 0:f269e3021894 899
elessair 0:f269e3021894 900 return( 1 );
elessair 0:f269e3021894 901 }
elessair 0:f269e3021894 902
elessair 0:f269e3021894 903 ret = mbedtls_gcm_update( &ctx, rest_len, ct[j * 6 + i] + 32,
elessair 0:f269e3021894 904 buf + 32 );
elessair 0:f269e3021894 905 if( ret != 0 )
elessair 0:f269e3021894 906 {
elessair 0:f269e3021894 907 if( verbose != 0 )
elessair 0:f269e3021894 908 mbedtls_printf( "failed\n" );
elessair 0:f269e3021894 909
elessair 0:f269e3021894 910 return( 1 );
elessair 0:f269e3021894 911 }
elessair 0:f269e3021894 912 }
elessair 0:f269e3021894 913 else
elessair 0:f269e3021894 914 {
elessair 0:f269e3021894 915 ret = mbedtls_gcm_update( &ctx, pt_len[i], ct[j * 6 + i], buf );
elessair 0:f269e3021894 916 if( ret != 0 )
elessair 0:f269e3021894 917 {
elessair 0:f269e3021894 918 if( verbose != 0 )
elessair 0:f269e3021894 919 mbedtls_printf( "failed\n" );
elessair 0:f269e3021894 920
elessair 0:f269e3021894 921 return( 1 );
elessair 0:f269e3021894 922 }
elessair 0:f269e3021894 923 }
elessair 0:f269e3021894 924
elessair 0:f269e3021894 925 ret = mbedtls_gcm_finish( &ctx, tag_buf, 16 );
elessair 0:f269e3021894 926 if( ret != 0 ||
elessair 0:f269e3021894 927 memcmp( buf, pt[pt_index[i]], pt_len[i] ) != 0 ||
elessair 0:f269e3021894 928 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
elessair 0:f269e3021894 929 {
elessair 0:f269e3021894 930 if( verbose != 0 )
elessair 0:f269e3021894 931 mbedtls_printf( "failed\n" );
elessair 0:f269e3021894 932
elessair 0:f269e3021894 933 return( 1 );
elessair 0:f269e3021894 934 }
elessair 0:f269e3021894 935
elessair 0:f269e3021894 936 mbedtls_gcm_free( &ctx );
elessair 0:f269e3021894 937
elessair 0:f269e3021894 938 if( verbose != 0 )
elessair 0:f269e3021894 939 mbedtls_printf( "passed\n" );
elessair 0:f269e3021894 940
elessair 0:f269e3021894 941 }
elessair 0:f269e3021894 942 }
elessair 0:f269e3021894 943
elessair 0:f269e3021894 944 if( verbose != 0 )
elessair 0:f269e3021894 945 mbedtls_printf( "\n" );
elessair 0:f269e3021894 946
elessair 0:f269e3021894 947 return( 0 );
elessair 0:f269e3021894 948 }
elessair 0:f269e3021894 949
elessair 0:f269e3021894 950 #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
elessair 0:f269e3021894 951
elessair 0:f269e3021894 952 #endif /* MBEDTLS_GCM_C */