Nitin Shukla / LED_Demo

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Dependencies:   MAX44000 nexpaq_mdk

Fork of LED_Demo by Maxim nexpaq

mbd_os/features/mbedtls/src/gcm.c@1:55a6170b404f, 2016-09-17 (annotated)

Committer:
nexpaq
Date:
Sat Sep 17 16:32:05 2016 +0000
Revision:
1:55a6170b404f
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nexpaq 1:55a6170b404f 1 /*
nexpaq 1:55a6170b404f 2 * NIST SP800-38D compliant GCM implementation
nexpaq 1:55a6170b404f 3 *
nexpaq 1:55a6170b404f 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
nexpaq 1:55a6170b404f 5 * SPDX-License-Identifier: Apache-2.0
nexpaq 1:55a6170b404f 6 *
nexpaq 1:55a6170b404f 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
nexpaq 1:55a6170b404f 8 * not use this file except in compliance with the License.
nexpaq 1:55a6170b404f 9 * You may obtain a copy of the License at
nexpaq 1:55a6170b404f 10 *
nexpaq 1:55a6170b404f 11 * http://www.apache.org/licenses/LICENSE-2.0
nexpaq 1:55a6170b404f 12 *
nexpaq 1:55a6170b404f 13 * Unless required by applicable law or agreed to in writing, software
nexpaq 1:55a6170b404f 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
nexpaq 1:55a6170b404f 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
nexpaq 1:55a6170b404f 16 * See the License for the specific language governing permissions and
nexpaq 1:55a6170b404f 17 * limitations under the License.
nexpaq 1:55a6170b404f 18 *
nexpaq 1:55a6170b404f 19 * This file is part of mbed TLS (https://tls.mbed.org)
nexpaq 1:55a6170b404f 20 */
nexpaq 1:55a6170b404f 21
nexpaq 1:55a6170b404f 22 /*
nexpaq 1:55a6170b404f 23 * http://csrc.nist.gov/publications/nistpubs/800-38D/SP-800-38D.pdf
nexpaq 1:55a6170b404f 24 *
nexpaq 1:55a6170b404f 25 * See also:
nexpaq 1:55a6170b404f 26 * [MGV] http://csrc.nist.gov/groups/ST/toolkit/BCM/documents/proposedmodes/gcm/gcm-revised-spec.pdf
nexpaq 1:55a6170b404f 27 *
nexpaq 1:55a6170b404f 28 * We use the algorithm described as Shoup's method with 4-bit tables in
nexpaq 1:55a6170b404f 29 * [MGV] 4.1, pp. 12-13, to enhance speed without using too much memory.
nexpaq 1:55a6170b404f 30 */
nexpaq 1:55a6170b404f 31
nexpaq 1:55a6170b404f 32 #if !defined(MBEDTLS_CONFIG_FILE)
nexpaq 1:55a6170b404f 33 #include "mbedtls/config.h"
nexpaq 1:55a6170b404f 34 #else
nexpaq 1:55a6170b404f 35 #include MBEDTLS_CONFIG_FILE
nexpaq 1:55a6170b404f 36 #endif
nexpaq 1:55a6170b404f 37
nexpaq 1:55a6170b404f 38 #if defined(MBEDTLS_GCM_C)
nexpaq 1:55a6170b404f 39
nexpaq 1:55a6170b404f 40 #include "mbedtls/gcm.h"
nexpaq 1:55a6170b404f 41
nexpaq 1:55a6170b404f 42 #include <string.h>
nexpaq 1:55a6170b404f 43
nexpaq 1:55a6170b404f 44 #if defined(MBEDTLS_AESNI_C)
nexpaq 1:55a6170b404f 45 #include "mbedtls/aesni.h"
nexpaq 1:55a6170b404f 46 #endif
nexpaq 1:55a6170b404f 47
nexpaq 1:55a6170b404f 48 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
nexpaq 1:55a6170b404f 49 #if defined(MBEDTLS_PLATFORM_C)
nexpaq 1:55a6170b404f 50 #include "mbedtls/platform.h"
nexpaq 1:55a6170b404f 51 #else
nexpaq 1:55a6170b404f 52 #include <stdio.h>
nexpaq 1:55a6170b404f 53 #define mbedtls_printf printf
nexpaq 1:55a6170b404f 54 #endif /* MBEDTLS_PLATFORM_C */
nexpaq 1:55a6170b404f 55 #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
nexpaq 1:55a6170b404f 56
nexpaq 1:55a6170b404f 57 /*
nexpaq 1:55a6170b404f 58 * 32-bit integer manipulation macros (big endian)
nexpaq 1:55a6170b404f 59 */
nexpaq 1:55a6170b404f 60 #ifndef GET_UINT32_BE
nexpaq 1:55a6170b404f 61 #define GET_UINT32_BE(n,b,i) \
nexpaq 1:55a6170b404f 62 { \
nexpaq 1:55a6170b404f 63 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
nexpaq 1:55a6170b404f 64 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
nexpaq 1:55a6170b404f 65 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
nexpaq 1:55a6170b404f 66 | ( (uint32_t) (b)[(i) + 3] ); \
nexpaq 1:55a6170b404f 67 }
nexpaq 1:55a6170b404f 68 #endif
nexpaq 1:55a6170b404f 69
nexpaq 1:55a6170b404f 70 #ifndef PUT_UINT32_BE
nexpaq 1:55a6170b404f 71 #define PUT_UINT32_BE(n,b,i) \
nexpaq 1:55a6170b404f 72 { \
nexpaq 1:55a6170b404f 73 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
nexpaq 1:55a6170b404f 74 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
nexpaq 1:55a6170b404f 75 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
nexpaq 1:55a6170b404f 76 (b)[(i) + 3] = (unsigned char) ( (n) ); \
nexpaq 1:55a6170b404f 77 }
nexpaq 1:55a6170b404f 78 #endif
nexpaq 1:55a6170b404f 79
nexpaq 1:55a6170b404f 80 /* Implementation that should never be optimized out by the compiler */
nexpaq 1:55a6170b404f 81 static void mbedtls_zeroize( void *v, size_t n ) {
nexpaq 1:55a6170b404f 82 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
nexpaq 1:55a6170b404f 83 }
nexpaq 1:55a6170b404f 84
nexpaq 1:55a6170b404f 85 /*
nexpaq 1:55a6170b404f 86 * Initialize a context
nexpaq 1:55a6170b404f 87 */
nexpaq 1:55a6170b404f 88 void mbedtls_gcm_init( mbedtls_gcm_context *ctx )
nexpaq 1:55a6170b404f 89 {
nexpaq 1:55a6170b404f 90 memset( ctx, 0, sizeof( mbedtls_gcm_context ) );
nexpaq 1:55a6170b404f 91 }
nexpaq 1:55a6170b404f 92
nexpaq 1:55a6170b404f 93 /*
nexpaq 1:55a6170b404f 94 * Precompute small multiples of H, that is set
nexpaq 1:55a6170b404f 95 * HH[i] || HL[i] = H times i,
nexpaq 1:55a6170b404f 96 * where i is seen as a field element as in [MGV], ie high-order bits
nexpaq 1:55a6170b404f 97 * correspond to low powers of P. The result is stored in the same way, that
nexpaq 1:55a6170b404f 98 * is the high-order bit of HH corresponds to P^0 and the low-order bit of HL
nexpaq 1:55a6170b404f 99 * corresponds to P^127.
nexpaq 1:55a6170b404f 100 */
nexpaq 1:55a6170b404f 101 static int gcm_gen_table( mbedtls_gcm_context *ctx )
nexpaq 1:55a6170b404f 102 {
nexpaq 1:55a6170b404f 103 int ret, i, j;
nexpaq 1:55a6170b404f 104 uint64_t hi, lo;
nexpaq 1:55a6170b404f 105 uint64_t vl, vh;
nexpaq 1:55a6170b404f 106 unsigned char h[16];
nexpaq 1:55a6170b404f 107 size_t olen = 0;
nexpaq 1:55a6170b404f 108
nexpaq 1:55a6170b404f 109 memset( h, 0, 16 );
nexpaq 1:55a6170b404f 110 if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, h, 16, h, &olen ) ) != 0 )
nexpaq 1:55a6170b404f 111 return( ret );
nexpaq 1:55a6170b404f 112
nexpaq 1:55a6170b404f 113 /* pack h as two 64-bits ints, big-endian */
nexpaq 1:55a6170b404f 114 GET_UINT32_BE( hi, h, 0 );
nexpaq 1:55a6170b404f 115 GET_UINT32_BE( lo, h, 4 );
nexpaq 1:55a6170b404f 116 vh = (uint64_t) hi << 32 | lo;
nexpaq 1:55a6170b404f 117
nexpaq 1:55a6170b404f 118 GET_UINT32_BE( hi, h, 8 );
nexpaq 1:55a6170b404f 119 GET_UINT32_BE( lo, h, 12 );
nexpaq 1:55a6170b404f 120 vl = (uint64_t) hi << 32 | lo;
nexpaq 1:55a6170b404f 121
nexpaq 1:55a6170b404f 122 /* 8 = 1000 corresponds to 1 in GF(2^128) */
nexpaq 1:55a6170b404f 123 ctx->HL[8] = vl;
nexpaq 1:55a6170b404f 124 ctx->HH[8] = vh;
nexpaq 1:55a6170b404f 125
nexpaq 1:55a6170b404f 126 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
nexpaq 1:55a6170b404f 127 /* With CLMUL support, we need only h, not the rest of the table */
nexpaq 1:55a6170b404f 128 if( mbedtls_aesni_has_support( MBEDTLS_AESNI_CLMUL ) )
nexpaq 1:55a6170b404f 129 return( 0 );
nexpaq 1:55a6170b404f 130 #endif
nexpaq 1:55a6170b404f 131
nexpaq 1:55a6170b404f 132 /* 0 corresponds to 0 in GF(2^128) */
nexpaq 1:55a6170b404f 133 ctx->HH[0] = 0;
nexpaq 1:55a6170b404f 134 ctx->HL[0] = 0;
nexpaq 1:55a6170b404f 135
nexpaq 1:55a6170b404f 136 for( i = 4; i > 0; i >>= 1 )
nexpaq 1:55a6170b404f 137 {
nexpaq 1:55a6170b404f 138 uint32_t T = ( vl & 1 ) * 0xe1000000U;
nexpaq 1:55a6170b404f 139 vl = ( vh << 63 ) | ( vl >> 1 );
nexpaq 1:55a6170b404f 140 vh = ( vh >> 1 ) ^ ( (uint64_t) T << 32);
nexpaq 1:55a6170b404f 141
nexpaq 1:55a6170b404f 142 ctx->HL[i] = vl;
nexpaq 1:55a6170b404f 143 ctx->HH[i] = vh;
nexpaq 1:55a6170b404f 144 }
nexpaq 1:55a6170b404f 145
nexpaq 1:55a6170b404f 146 for( i = 2; i <= 8; i *= 2 )
nexpaq 1:55a6170b404f 147 {
nexpaq 1:55a6170b404f 148 uint64_t *HiL = ctx->HL + i, *HiH = ctx->HH + i;
nexpaq 1:55a6170b404f 149 vh = *HiH;
nexpaq 1:55a6170b404f 150 vl = *HiL;
nexpaq 1:55a6170b404f 151 for( j = 1; j < i; j++ )
nexpaq 1:55a6170b404f 152 {
nexpaq 1:55a6170b404f 153 HiH[j] = vh ^ ctx->HH[j];
nexpaq 1:55a6170b404f 154 HiL[j] = vl ^ ctx->HL[j];
nexpaq 1:55a6170b404f 155 }
nexpaq 1:55a6170b404f 156 }
nexpaq 1:55a6170b404f 157
nexpaq 1:55a6170b404f 158 return( 0 );
nexpaq 1:55a6170b404f 159 }
nexpaq 1:55a6170b404f 160
nexpaq 1:55a6170b404f 161 int mbedtls_gcm_setkey( mbedtls_gcm_context *ctx,
nexpaq 1:55a6170b404f 162 mbedtls_cipher_id_t cipher,
nexpaq 1:55a6170b404f 163 const unsigned char *key,
nexpaq 1:55a6170b404f 164 unsigned int keybits )
nexpaq 1:55a6170b404f 165 {
nexpaq 1:55a6170b404f 166 int ret;
nexpaq 1:55a6170b404f 167 const mbedtls_cipher_info_t *cipher_info;
nexpaq 1:55a6170b404f 168
nexpaq 1:55a6170b404f 169 cipher_info = mbedtls_cipher_info_from_values( cipher, keybits, MBEDTLS_MODE_ECB );
nexpaq 1:55a6170b404f 170 if( cipher_info == NULL )
nexpaq 1:55a6170b404f 171 return( MBEDTLS_ERR_GCM_BAD_INPUT );
nexpaq 1:55a6170b404f 172
nexpaq 1:55a6170b404f 173 if( cipher_info->block_size != 16 )
nexpaq 1:55a6170b404f 174 return( MBEDTLS_ERR_GCM_BAD_INPUT );
nexpaq 1:55a6170b404f 175
nexpaq 1:55a6170b404f 176 mbedtls_cipher_free( &ctx->cipher_ctx );
nexpaq 1:55a6170b404f 177
nexpaq 1:55a6170b404f 178 if( ( ret = mbedtls_cipher_setup( &ctx->cipher_ctx, cipher_info ) ) != 0 )
nexpaq 1:55a6170b404f 179 return( ret );
nexpaq 1:55a6170b404f 180
nexpaq 1:55a6170b404f 181 if( ( ret = mbedtls_cipher_setkey( &ctx->cipher_ctx, key, keybits,
nexpaq 1:55a6170b404f 182 MBEDTLS_ENCRYPT ) ) != 0 )
nexpaq 1:55a6170b404f 183 {
nexpaq 1:55a6170b404f 184 return( ret );
nexpaq 1:55a6170b404f 185 }
nexpaq 1:55a6170b404f 186
nexpaq 1:55a6170b404f 187 if( ( ret = gcm_gen_table( ctx ) ) != 0 )
nexpaq 1:55a6170b404f 188 return( ret );
nexpaq 1:55a6170b404f 189
nexpaq 1:55a6170b404f 190 return( 0 );
nexpaq 1:55a6170b404f 191 }
nexpaq 1:55a6170b404f 192
nexpaq 1:55a6170b404f 193 /*
nexpaq 1:55a6170b404f 194 * Shoup's method for multiplication use this table with
nexpaq 1:55a6170b404f 195 * last4[x] = x times P^128
nexpaq 1:55a6170b404f 196 * where x and last4[x] are seen as elements of GF(2^128) as in [MGV]
nexpaq 1:55a6170b404f 197 */
nexpaq 1:55a6170b404f 198 static const uint64_t last4[16] =
nexpaq 1:55a6170b404f 199 {
nexpaq 1:55a6170b404f 200 0x0000, 0x1c20, 0x3840, 0x2460,
nexpaq 1:55a6170b404f 201 0x7080, 0x6ca0, 0x48c0, 0x54e0,
nexpaq 1:55a6170b404f 202 0xe100, 0xfd20, 0xd940, 0xc560,
nexpaq 1:55a6170b404f 203 0x9180, 0x8da0, 0xa9c0, 0xb5e0
nexpaq 1:55a6170b404f 204 };
nexpaq 1:55a6170b404f 205
nexpaq 1:55a6170b404f 206 /*
nexpaq 1:55a6170b404f 207 * Sets output to x times H using the precomputed tables.
nexpaq 1:55a6170b404f 208 * x and output are seen as elements of GF(2^128) as in [MGV].
nexpaq 1:55a6170b404f 209 */
nexpaq 1:55a6170b404f 210 static void gcm_mult( mbedtls_gcm_context *ctx, const unsigned char x[16],
nexpaq 1:55a6170b404f 211 unsigned char output[16] )
nexpaq 1:55a6170b404f 212 {
nexpaq 1:55a6170b404f 213 int i = 0;
nexpaq 1:55a6170b404f 214 unsigned char lo, hi, rem;
nexpaq 1:55a6170b404f 215 uint64_t zh, zl;
nexpaq 1:55a6170b404f 216
nexpaq 1:55a6170b404f 217 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
nexpaq 1:55a6170b404f 218 if( mbedtls_aesni_has_support( MBEDTLS_AESNI_CLMUL ) ) {
nexpaq 1:55a6170b404f 219 unsigned char h[16];
nexpaq 1:55a6170b404f 220
nexpaq 1:55a6170b404f 221 PUT_UINT32_BE( ctx->HH[8] >> 32, h, 0 );
nexpaq 1:55a6170b404f 222 PUT_UINT32_BE( ctx->HH[8], h, 4 );
nexpaq 1:55a6170b404f 223 PUT_UINT32_BE( ctx->HL[8] >> 32, h, 8 );
nexpaq 1:55a6170b404f 224 PUT_UINT32_BE( ctx->HL[8], h, 12 );
nexpaq 1:55a6170b404f 225
nexpaq 1:55a6170b404f 226 mbedtls_aesni_gcm_mult( output, x, h );
nexpaq 1:55a6170b404f 227 return;
nexpaq 1:55a6170b404f 228 }
nexpaq 1:55a6170b404f 229 #endif /* MBEDTLS_AESNI_C && MBEDTLS_HAVE_X86_64 */
nexpaq 1:55a6170b404f 230
nexpaq 1:55a6170b404f 231 lo = x[15] & 0xf;
nexpaq 1:55a6170b404f 232
nexpaq 1:55a6170b404f 233 zh = ctx->HH[lo];
nexpaq 1:55a6170b404f 234 zl = ctx->HL[lo];
nexpaq 1:55a6170b404f 235
nexpaq 1:55a6170b404f 236 for( i = 15; i >= 0; i-- )
nexpaq 1:55a6170b404f 237 {
nexpaq 1:55a6170b404f 238 lo = x[i] & 0xf;
nexpaq 1:55a6170b404f 239 hi = x[i] >> 4;
nexpaq 1:55a6170b404f 240
nexpaq 1:55a6170b404f 241 if( i != 15 )
nexpaq 1:55a6170b404f 242 {
nexpaq 1:55a6170b404f 243 rem = (unsigned char) zl & 0xf;
nexpaq 1:55a6170b404f 244 zl = ( zh << 60 ) | ( zl >> 4 );
nexpaq 1:55a6170b404f 245 zh = ( zh >> 4 );
nexpaq 1:55a6170b404f 246 zh ^= (uint64_t) last4[rem] << 48;
nexpaq 1:55a6170b404f 247 zh ^= ctx->HH[lo];
nexpaq 1:55a6170b404f 248 zl ^= ctx->HL[lo];
nexpaq 1:55a6170b404f 249
nexpaq 1:55a6170b404f 250 }
nexpaq 1:55a6170b404f 251
nexpaq 1:55a6170b404f 252 rem = (unsigned char) zl & 0xf;
nexpaq 1:55a6170b404f 253 zl = ( zh << 60 ) | ( zl >> 4 );
nexpaq 1:55a6170b404f 254 zh = ( zh >> 4 );
nexpaq 1:55a6170b404f 255 zh ^= (uint64_t) last4[rem] << 48;
nexpaq 1:55a6170b404f 256 zh ^= ctx->HH[hi];
nexpaq 1:55a6170b404f 257 zl ^= ctx->HL[hi];
nexpaq 1:55a6170b404f 258 }
nexpaq 1:55a6170b404f 259
nexpaq 1:55a6170b404f 260 PUT_UINT32_BE( zh >> 32, output, 0 );
nexpaq 1:55a6170b404f 261 PUT_UINT32_BE( zh, output, 4 );
nexpaq 1:55a6170b404f 262 PUT_UINT32_BE( zl >> 32, output, 8 );
nexpaq 1:55a6170b404f 263 PUT_UINT32_BE( zl, output, 12 );
nexpaq 1:55a6170b404f 264 }
nexpaq 1:55a6170b404f 265
nexpaq 1:55a6170b404f 266 int mbedtls_gcm_starts( mbedtls_gcm_context *ctx,
nexpaq 1:55a6170b404f 267 int mode,
nexpaq 1:55a6170b404f 268 const unsigned char *iv,
nexpaq 1:55a6170b404f 269 size_t iv_len,
nexpaq 1:55a6170b404f 270 const unsigned char *add,
nexpaq 1:55a6170b404f 271 size_t add_len )
nexpaq 1:55a6170b404f 272 {
nexpaq 1:55a6170b404f 273 int ret;
nexpaq 1:55a6170b404f 274 unsigned char work_buf[16];
nexpaq 1:55a6170b404f 275 size_t i;
nexpaq 1:55a6170b404f 276 const unsigned char *p;
nexpaq 1:55a6170b404f 277 size_t use_len, olen = 0;
nexpaq 1:55a6170b404f 278
nexpaq 1:55a6170b404f 279 /* IV and AD are limited to 2^64 bits, so 2^61 bytes */
nexpaq 1:55a6170b404f 280 if( ( (uint64_t) iv_len ) >> 61 != 0 ||
nexpaq 1:55a6170b404f 281 ( (uint64_t) add_len ) >> 61 != 0 )
nexpaq 1:55a6170b404f 282 {
nexpaq 1:55a6170b404f 283 return( MBEDTLS_ERR_GCM_BAD_INPUT );
nexpaq 1:55a6170b404f 284 }
nexpaq 1:55a6170b404f 285
nexpaq 1:55a6170b404f 286 memset( ctx->y, 0x00, sizeof(ctx->y) );
nexpaq 1:55a6170b404f 287 memset( ctx->buf, 0x00, sizeof(ctx->buf) );
nexpaq 1:55a6170b404f 288
nexpaq 1:55a6170b404f 289 ctx->mode = mode;
nexpaq 1:55a6170b404f 290 ctx->len = 0;
nexpaq 1:55a6170b404f 291 ctx->add_len = 0;
nexpaq 1:55a6170b404f 292
nexpaq 1:55a6170b404f 293 if( iv_len == 12 )
nexpaq 1:55a6170b404f 294 {
nexpaq 1:55a6170b404f 295 memcpy( ctx->y, iv, iv_len );
nexpaq 1:55a6170b404f 296 ctx->y[15] = 1;
nexpaq 1:55a6170b404f 297 }
nexpaq 1:55a6170b404f 298 else
nexpaq 1:55a6170b404f 299 {
nexpaq 1:55a6170b404f 300 memset( work_buf, 0x00, 16 );
nexpaq 1:55a6170b404f 301 PUT_UINT32_BE( iv_len * 8, work_buf, 12 );
nexpaq 1:55a6170b404f 302
nexpaq 1:55a6170b404f 303 p = iv;
nexpaq 1:55a6170b404f 304 while( iv_len > 0 )
nexpaq 1:55a6170b404f 305 {
nexpaq 1:55a6170b404f 306 use_len = ( iv_len < 16 ) ? iv_len : 16;
nexpaq 1:55a6170b404f 307
nexpaq 1:55a6170b404f 308 for( i = 0; i < use_len; i++ )
nexpaq 1:55a6170b404f 309 ctx->y[i] ^= p[i];
nexpaq 1:55a6170b404f 310
nexpaq 1:55a6170b404f 311 gcm_mult( ctx, ctx->y, ctx->y );
nexpaq 1:55a6170b404f 312
nexpaq 1:55a6170b404f 313 iv_len -= use_len;
nexpaq 1:55a6170b404f 314 p += use_len;
nexpaq 1:55a6170b404f 315 }
nexpaq 1:55a6170b404f 316
nexpaq 1:55a6170b404f 317 for( i = 0; i < 16; i++ )
nexpaq 1:55a6170b404f 318 ctx->y[i] ^= work_buf[i];
nexpaq 1:55a6170b404f 319
nexpaq 1:55a6170b404f 320 gcm_mult( ctx, ctx->y, ctx->y );
nexpaq 1:55a6170b404f 321 }
nexpaq 1:55a6170b404f 322
nexpaq 1:55a6170b404f 323 if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ctx->base_ectr,
nexpaq 1:55a6170b404f 324 &olen ) ) != 0 )
nexpaq 1:55a6170b404f 325 {
nexpaq 1:55a6170b404f 326 return( ret );
nexpaq 1:55a6170b404f 327 }
nexpaq 1:55a6170b404f 328
nexpaq 1:55a6170b404f 329 ctx->add_len = add_len;
nexpaq 1:55a6170b404f 330 p = add;
nexpaq 1:55a6170b404f 331 while( add_len > 0 )
nexpaq 1:55a6170b404f 332 {
nexpaq 1:55a6170b404f 333 use_len = ( add_len < 16 ) ? add_len : 16;
nexpaq 1:55a6170b404f 334
nexpaq 1:55a6170b404f 335 for( i = 0; i < use_len; i++ )
nexpaq 1:55a6170b404f 336 ctx->buf[i] ^= p[i];
nexpaq 1:55a6170b404f 337
nexpaq 1:55a6170b404f 338 gcm_mult( ctx, ctx->buf, ctx->buf );
nexpaq 1:55a6170b404f 339
nexpaq 1:55a6170b404f 340 add_len -= use_len;
nexpaq 1:55a6170b404f 341 p += use_len;
nexpaq 1:55a6170b404f 342 }
nexpaq 1:55a6170b404f 343
nexpaq 1:55a6170b404f 344 return( 0 );
nexpaq 1:55a6170b404f 345 }
nexpaq 1:55a6170b404f 346
nexpaq 1:55a6170b404f 347 int mbedtls_gcm_update( mbedtls_gcm_context *ctx,
nexpaq 1:55a6170b404f 348 size_t length,
nexpaq 1:55a6170b404f 349 const unsigned char *input,
nexpaq 1:55a6170b404f 350 unsigned char *output )
nexpaq 1:55a6170b404f 351 {
nexpaq 1:55a6170b404f 352 int ret;
nexpaq 1:55a6170b404f 353 unsigned char ectr[16];
nexpaq 1:55a6170b404f 354 size_t i;
nexpaq 1:55a6170b404f 355 const unsigned char *p;
nexpaq 1:55a6170b404f 356 unsigned char *out_p = output;
nexpaq 1:55a6170b404f 357 size_t use_len, olen = 0;
nexpaq 1:55a6170b404f 358
nexpaq 1:55a6170b404f 359 if( output > input && (size_t) ( output - input ) < length )
nexpaq 1:55a6170b404f 360 return( MBEDTLS_ERR_GCM_BAD_INPUT );
nexpaq 1:55a6170b404f 361
nexpaq 1:55a6170b404f 362 /* Total length is restricted to 2^39 - 256 bits, ie 2^36 - 2^5 bytes
nexpaq 1:55a6170b404f 363 * Also check for possible overflow */
nexpaq 1:55a6170b404f 364 if( ctx->len + length < ctx->len ||
nexpaq 1:55a6170b404f 365 (uint64_t) ctx->len + length > 0xFFFFFFFE0ull )
nexpaq 1:55a6170b404f 366 {
nexpaq 1:55a6170b404f 367 return( MBEDTLS_ERR_GCM_BAD_INPUT );
nexpaq 1:55a6170b404f 368 }
nexpaq 1:55a6170b404f 369
nexpaq 1:55a6170b404f 370 ctx->len += length;
nexpaq 1:55a6170b404f 371
nexpaq 1:55a6170b404f 372 p = input;
nexpaq 1:55a6170b404f 373 while( length > 0 )
nexpaq 1:55a6170b404f 374 {
nexpaq 1:55a6170b404f 375 use_len = ( length < 16 ) ? length : 16;
nexpaq 1:55a6170b404f 376
nexpaq 1:55a6170b404f 377 for( i = 16; i > 12; i-- )
nexpaq 1:55a6170b404f 378 if( ++ctx->y[i - 1] != 0 )
nexpaq 1:55a6170b404f 379 break;
nexpaq 1:55a6170b404f 380
nexpaq 1:55a6170b404f 381 if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ectr,
nexpaq 1:55a6170b404f 382 &olen ) ) != 0 )
nexpaq 1:55a6170b404f 383 {
nexpaq 1:55a6170b404f 384 return( ret );
nexpaq 1:55a6170b404f 385 }
nexpaq 1:55a6170b404f 386
nexpaq 1:55a6170b404f 387 for( i = 0; i < use_len; i++ )
nexpaq 1:55a6170b404f 388 {
nexpaq 1:55a6170b404f 389 if( ctx->mode == MBEDTLS_GCM_DECRYPT )
nexpaq 1:55a6170b404f 390 ctx->buf[i] ^= p[i];
nexpaq 1:55a6170b404f 391 out_p[i] = ectr[i] ^ p[i];
nexpaq 1:55a6170b404f 392 if( ctx->mode == MBEDTLS_GCM_ENCRYPT )
nexpaq 1:55a6170b404f 393 ctx->buf[i] ^= out_p[i];
nexpaq 1:55a6170b404f 394 }
nexpaq 1:55a6170b404f 395
nexpaq 1:55a6170b404f 396 gcm_mult( ctx, ctx->buf, ctx->buf );
nexpaq 1:55a6170b404f 397
nexpaq 1:55a6170b404f 398 length -= use_len;
nexpaq 1:55a6170b404f 399 p += use_len;
nexpaq 1:55a6170b404f 400 out_p += use_len;
nexpaq 1:55a6170b404f 401 }
nexpaq 1:55a6170b404f 402
nexpaq 1:55a6170b404f 403 return( 0 );
nexpaq 1:55a6170b404f 404 }
nexpaq 1:55a6170b404f 405
nexpaq 1:55a6170b404f 406 int mbedtls_gcm_finish( mbedtls_gcm_context *ctx,
nexpaq 1:55a6170b404f 407 unsigned char *tag,
nexpaq 1:55a6170b404f 408 size_t tag_len )
nexpaq 1:55a6170b404f 409 {
nexpaq 1:55a6170b404f 410 unsigned char work_buf[16];
nexpaq 1:55a6170b404f 411 size_t i;
nexpaq 1:55a6170b404f 412 uint64_t orig_len = ctx->len * 8;
nexpaq 1:55a6170b404f 413 uint64_t orig_add_len = ctx->add_len * 8;
nexpaq 1:55a6170b404f 414
nexpaq 1:55a6170b404f 415 if( tag_len > 16 || tag_len < 4 )
nexpaq 1:55a6170b404f 416 return( MBEDTLS_ERR_GCM_BAD_INPUT );
nexpaq 1:55a6170b404f 417
nexpaq 1:55a6170b404f 418 if( tag_len != 0 )
nexpaq 1:55a6170b404f 419 memcpy( tag, ctx->base_ectr, tag_len );
nexpaq 1:55a6170b404f 420
nexpaq 1:55a6170b404f 421 if( orig_len || orig_add_len )
nexpaq 1:55a6170b404f 422 {
nexpaq 1:55a6170b404f 423 memset( work_buf, 0x00, 16 );
nexpaq 1:55a6170b404f 424
nexpaq 1:55a6170b404f 425 PUT_UINT32_BE( ( orig_add_len >> 32 ), work_buf, 0 );
nexpaq 1:55a6170b404f 426 PUT_UINT32_BE( ( orig_add_len ), work_buf, 4 );
nexpaq 1:55a6170b404f 427 PUT_UINT32_BE( ( orig_len >> 32 ), work_buf, 8 );
nexpaq 1:55a6170b404f 428 PUT_UINT32_BE( ( orig_len ), work_buf, 12 );
nexpaq 1:55a6170b404f 429
nexpaq 1:55a6170b404f 430 for( i = 0; i < 16; i++ )
nexpaq 1:55a6170b404f 431 ctx->buf[i] ^= work_buf[i];
nexpaq 1:55a6170b404f 432
nexpaq 1:55a6170b404f 433 gcm_mult( ctx, ctx->buf, ctx->buf );
nexpaq 1:55a6170b404f 434
nexpaq 1:55a6170b404f 435 for( i = 0; i < tag_len; i++ )
nexpaq 1:55a6170b404f 436 tag[i] ^= ctx->buf[i];
nexpaq 1:55a6170b404f 437 }
nexpaq 1:55a6170b404f 438
nexpaq 1:55a6170b404f 439 return( 0 );
nexpaq 1:55a6170b404f 440 }
nexpaq 1:55a6170b404f 441
nexpaq 1:55a6170b404f 442 int mbedtls_gcm_crypt_and_tag( mbedtls_gcm_context *ctx,
nexpaq 1:55a6170b404f 443 int mode,
nexpaq 1:55a6170b404f 444 size_t length,
nexpaq 1:55a6170b404f 445 const unsigned char *iv,
nexpaq 1:55a6170b404f 446 size_t iv_len,
nexpaq 1:55a6170b404f 447 const unsigned char *add,
nexpaq 1:55a6170b404f 448 size_t add_len,
nexpaq 1:55a6170b404f 449 const unsigned char *input,
nexpaq 1:55a6170b404f 450 unsigned char *output,
nexpaq 1:55a6170b404f 451 size_t tag_len,
nexpaq 1:55a6170b404f 452 unsigned char *tag )
nexpaq 1:55a6170b404f 453 {
nexpaq 1:55a6170b404f 454 int ret;
nexpaq 1:55a6170b404f 455
nexpaq 1:55a6170b404f 456 if( ( ret = mbedtls_gcm_starts( ctx, mode, iv, iv_len, add, add_len ) ) != 0 )
nexpaq 1:55a6170b404f 457 return( ret );
nexpaq 1:55a6170b404f 458
nexpaq 1:55a6170b404f 459 if( ( ret = mbedtls_gcm_update( ctx, length, input, output ) ) != 0 )
nexpaq 1:55a6170b404f 460 return( ret );
nexpaq 1:55a6170b404f 461
nexpaq 1:55a6170b404f 462 if( ( ret = mbedtls_gcm_finish( ctx, tag, tag_len ) ) != 0 )
nexpaq 1:55a6170b404f 463 return( ret );
nexpaq 1:55a6170b404f 464
nexpaq 1:55a6170b404f 465 return( 0 );
nexpaq 1:55a6170b404f 466 }
nexpaq 1:55a6170b404f 467
nexpaq 1:55a6170b404f 468 int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx,
nexpaq 1:55a6170b404f 469 size_t length,
nexpaq 1:55a6170b404f 470 const unsigned char *iv,
nexpaq 1:55a6170b404f 471 size_t iv_len,
nexpaq 1:55a6170b404f 472 const unsigned char *add,
nexpaq 1:55a6170b404f 473 size_t add_len,
nexpaq 1:55a6170b404f 474 const unsigned char *tag,
nexpaq 1:55a6170b404f 475 size_t tag_len,
nexpaq 1:55a6170b404f 476 const unsigned char *input,
nexpaq 1:55a6170b404f 477 unsigned char *output )
nexpaq 1:55a6170b404f 478 {
nexpaq 1:55a6170b404f 479 int ret;
nexpaq 1:55a6170b404f 480 unsigned char check_tag[16];
nexpaq 1:55a6170b404f 481 size_t i;
nexpaq 1:55a6170b404f 482 int diff;
nexpaq 1:55a6170b404f 483
nexpaq 1:55a6170b404f 484 if( ( ret = mbedtls_gcm_crypt_and_tag( ctx, MBEDTLS_GCM_DECRYPT, length,
nexpaq 1:55a6170b404f 485 iv, iv_len, add, add_len,
nexpaq 1:55a6170b404f 486 input, output, tag_len, check_tag ) ) != 0 )
nexpaq 1:55a6170b404f 487 {
nexpaq 1:55a6170b404f 488 return( ret );
nexpaq 1:55a6170b404f 489 }
nexpaq 1:55a6170b404f 490
nexpaq 1:55a6170b404f 491 /* Check tag in "constant-time" */
nexpaq 1:55a6170b404f 492 for( diff = 0, i = 0; i < tag_len; i++ )
nexpaq 1:55a6170b404f 493 diff |= tag[i] ^ check_tag[i];
nexpaq 1:55a6170b404f 494
nexpaq 1:55a6170b404f 495 if( diff != 0 )
nexpaq 1:55a6170b404f 496 {
nexpaq 1:55a6170b404f 497 mbedtls_zeroize( output, length );
nexpaq 1:55a6170b404f 498 return( MBEDTLS_ERR_GCM_AUTH_FAILED );
nexpaq 1:55a6170b404f 499 }
nexpaq 1:55a6170b404f 500
nexpaq 1:55a6170b404f 501 return( 0 );
nexpaq 1:55a6170b404f 502 }
nexpaq 1:55a6170b404f 503
nexpaq 1:55a6170b404f 504 void mbedtls_gcm_free( mbedtls_gcm_context *ctx )
nexpaq 1:55a6170b404f 505 {
nexpaq 1:55a6170b404f 506 mbedtls_cipher_free( &ctx->cipher_ctx );
nexpaq 1:55a6170b404f 507 mbedtls_zeroize( ctx, sizeof( mbedtls_gcm_context ) );
nexpaq 1:55a6170b404f 508 }
nexpaq 1:55a6170b404f 509
nexpaq 1:55a6170b404f 510 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
nexpaq 1:55a6170b404f 511 /*
nexpaq 1:55a6170b404f 512 * AES-GCM test vectors from:
nexpaq 1:55a6170b404f 513 *
nexpaq 1:55a6170b404f 514 * http://csrc.nist.gov/groups/STM/cavp/documents/mac/gcmtestvectors.zip
nexpaq 1:55a6170b404f 515 */
nexpaq 1:55a6170b404f 516 #define MAX_TESTS 6
nexpaq 1:55a6170b404f 517
nexpaq 1:55a6170b404f 518 static const int key_index[MAX_TESTS] =
nexpaq 1:55a6170b404f 519 { 0, 0, 1, 1, 1, 1 };
nexpaq 1:55a6170b404f 520
nexpaq 1:55a6170b404f 521 static const unsigned char key[MAX_TESTS][32] =
nexpaq 1:55a6170b404f 522 {
nexpaq 1:55a6170b404f 523 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
nexpaq 1:55a6170b404f 524 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
nexpaq 1:55a6170b404f 525 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
nexpaq 1:55a6170b404f 526 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
nexpaq 1:55a6170b404f 527 { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
nexpaq 1:55a6170b404f 528 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
nexpaq 1:55a6170b404f 529 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
nexpaq 1:55a6170b404f 530 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08 },
nexpaq 1:55a6170b404f 531 };
nexpaq 1:55a6170b404f 532
nexpaq 1:55a6170b404f 533 static const size_t iv_len[MAX_TESTS] =
nexpaq 1:55a6170b404f 534 { 12, 12, 12, 12, 8, 60 };
nexpaq 1:55a6170b404f 535
nexpaq 1:55a6170b404f 536 static const int iv_index[MAX_TESTS] =
nexpaq 1:55a6170b404f 537 { 0, 0, 1, 1, 1, 2 };
nexpaq 1:55a6170b404f 538
nexpaq 1:55a6170b404f 539 static const unsigned char iv[MAX_TESTS][64] =
nexpaq 1:55a6170b404f 540 {
nexpaq 1:55a6170b404f 541 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
nexpaq 1:55a6170b404f 542 0x00, 0x00, 0x00, 0x00 },
nexpaq 1:55a6170b404f 543 { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
nexpaq 1:55a6170b404f 544 0xde, 0xca, 0xf8, 0x88 },
nexpaq 1:55a6170b404f 545 { 0x93, 0x13, 0x22, 0x5d, 0xf8, 0x84, 0x06, 0xe5,
nexpaq 1:55a6170b404f 546 0x55, 0x90, 0x9c, 0x5a, 0xff, 0x52, 0x69, 0xaa,
nexpaq 1:55a6170b404f 547 0x6a, 0x7a, 0x95, 0x38, 0x53, 0x4f, 0x7d, 0xa1,
nexpaq 1:55a6170b404f 548 0xe4, 0xc3, 0x03, 0xd2, 0xa3, 0x18, 0xa7, 0x28,
nexpaq 1:55a6170b404f 549 0xc3, 0xc0, 0xc9, 0x51, 0x56, 0x80, 0x95, 0x39,
nexpaq 1:55a6170b404f 550 0xfc, 0xf0, 0xe2, 0x42, 0x9a, 0x6b, 0x52, 0x54,
nexpaq 1:55a6170b404f 551 0x16, 0xae, 0xdb, 0xf5, 0xa0, 0xde, 0x6a, 0x57,
nexpaq 1:55a6170b404f 552 0xa6, 0x37, 0xb3, 0x9b },
nexpaq 1:55a6170b404f 553 };
nexpaq 1:55a6170b404f 554
nexpaq 1:55a6170b404f 555 static const size_t add_len[MAX_TESTS] =
nexpaq 1:55a6170b404f 556 { 0, 0, 0, 20, 20, 20 };
nexpaq 1:55a6170b404f 557
nexpaq 1:55a6170b404f 558 static const int add_index[MAX_TESTS] =
nexpaq 1:55a6170b404f 559 { 0, 0, 0, 1, 1, 1 };
nexpaq 1:55a6170b404f 560
nexpaq 1:55a6170b404f 561 static const unsigned char additional[MAX_TESTS][64] =
nexpaq 1:55a6170b404f 562 {
nexpaq 1:55a6170b404f 563 { 0x00 },
nexpaq 1:55a6170b404f 564 { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
nexpaq 1:55a6170b404f 565 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
nexpaq 1:55a6170b404f 566 0xab, 0xad, 0xda, 0xd2 },
nexpaq 1:55a6170b404f 567 };
nexpaq 1:55a6170b404f 568
nexpaq 1:55a6170b404f 569 static const size_t pt_len[MAX_TESTS] =
nexpaq 1:55a6170b404f 570 { 0, 16, 64, 60, 60, 60 };
nexpaq 1:55a6170b404f 571
nexpaq 1:55a6170b404f 572 static const int pt_index[MAX_TESTS] =
nexpaq 1:55a6170b404f 573 { 0, 0, 1, 1, 1, 1 };
nexpaq 1:55a6170b404f 574
nexpaq 1:55a6170b404f 575 static const unsigned char pt[MAX_TESTS][64] =
nexpaq 1:55a6170b404f 576 {
nexpaq 1:55a6170b404f 577 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
nexpaq 1:55a6170b404f 578 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
nexpaq 1:55a6170b404f 579 { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
nexpaq 1:55a6170b404f 580 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
nexpaq 1:55a6170b404f 581 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
nexpaq 1:55a6170b404f 582 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
nexpaq 1:55a6170b404f 583 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
nexpaq 1:55a6170b404f 584 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
nexpaq 1:55a6170b404f 585 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
nexpaq 1:55a6170b404f 586 0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55 },
nexpaq 1:55a6170b404f 587 };
nexpaq 1:55a6170b404f 588
nexpaq 1:55a6170b404f 589 static const unsigned char ct[MAX_TESTS * 3][64] =
nexpaq 1:55a6170b404f 590 {
nexpaq 1:55a6170b404f 591 { 0x00 },
nexpaq 1:55a6170b404f 592 { 0x03, 0x88, 0xda, 0xce, 0x60, 0xb6, 0xa3, 0x92,
nexpaq 1:55a6170b404f 593 0xf3, 0x28, 0xc2, 0xb9, 0x71, 0xb2, 0xfe, 0x78 },
nexpaq 1:55a6170b404f 594 { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
nexpaq 1:55a6170b404f 595 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
nexpaq 1:55a6170b404f 596 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
nexpaq 1:55a6170b404f 597 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
nexpaq 1:55a6170b404f 598 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
nexpaq 1:55a6170b404f 599 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
nexpaq 1:55a6170b404f 600 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
nexpaq 1:55a6170b404f 601 0x3d, 0x58, 0xe0, 0x91, 0x47, 0x3f, 0x59, 0x85 },
nexpaq 1:55a6170b404f 602 { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
nexpaq 1:55a6170b404f 603 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
nexpaq 1:55a6170b404f 604 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
nexpaq 1:55a6170b404f 605 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
nexpaq 1:55a6170b404f 606 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
nexpaq 1:55a6170b404f 607 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
nexpaq 1:55a6170b404f 608 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
nexpaq 1:55a6170b404f 609 0x3d, 0x58, 0xe0, 0x91 },
nexpaq 1:55a6170b404f 610 { 0x61, 0x35, 0x3b, 0x4c, 0x28, 0x06, 0x93, 0x4a,
nexpaq 1:55a6170b404f 611 0x77, 0x7f, 0xf5, 0x1f, 0xa2, 0x2a, 0x47, 0x55,
nexpaq 1:55a6170b404f 612 0x69, 0x9b, 0x2a, 0x71, 0x4f, 0xcd, 0xc6, 0xf8,
nexpaq 1:55a6170b404f 613 0x37, 0x66, 0xe5, 0xf9, 0x7b, 0x6c, 0x74, 0x23,
nexpaq 1:55a6170b404f 614 0x73, 0x80, 0x69, 0x00, 0xe4, 0x9f, 0x24, 0xb2,
nexpaq 1:55a6170b404f 615 0x2b, 0x09, 0x75, 0x44, 0xd4, 0x89, 0x6b, 0x42,
nexpaq 1:55a6170b404f 616 0x49, 0x89, 0xb5, 0xe1, 0xeb, 0xac, 0x0f, 0x07,
nexpaq 1:55a6170b404f 617 0xc2, 0x3f, 0x45, 0x98 },
nexpaq 1:55a6170b404f 618 { 0x8c, 0xe2, 0x49, 0x98, 0x62, 0x56, 0x15, 0xb6,
nexpaq 1:55a6170b404f 619 0x03, 0xa0, 0x33, 0xac, 0xa1, 0x3f, 0xb8, 0x94,
nexpaq 1:55a6170b404f 620 0xbe, 0x91, 0x12, 0xa5, 0xc3, 0xa2, 0x11, 0xa8,
nexpaq 1:55a6170b404f 621 0xba, 0x26, 0x2a, 0x3c, 0xca, 0x7e, 0x2c, 0xa7,
nexpaq 1:55a6170b404f 622 0x01, 0xe4, 0xa9, 0xa4, 0xfb, 0xa4, 0x3c, 0x90,
nexpaq 1:55a6170b404f 623 0xcc, 0xdc, 0xb2, 0x81, 0xd4, 0x8c, 0x7c, 0x6f,
nexpaq 1:55a6170b404f 624 0xd6, 0x28, 0x75, 0xd2, 0xac, 0xa4, 0x17, 0x03,
nexpaq 1:55a6170b404f 625 0x4c, 0x34, 0xae, 0xe5 },
nexpaq 1:55a6170b404f 626 { 0x00 },
nexpaq 1:55a6170b404f 627 { 0x98, 0xe7, 0x24, 0x7c, 0x07, 0xf0, 0xfe, 0x41,
nexpaq 1:55a6170b404f 628 0x1c, 0x26, 0x7e, 0x43, 0x84, 0xb0, 0xf6, 0x00 },
nexpaq 1:55a6170b404f 629 { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
nexpaq 1:55a6170b404f 630 0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
nexpaq 1:55a6170b404f 631 0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
nexpaq 1:55a6170b404f 632 0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
nexpaq 1:55a6170b404f 633 0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
nexpaq 1:55a6170b404f 634 0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
nexpaq 1:55a6170b404f 635 0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
nexpaq 1:55a6170b404f 636 0xcc, 0xda, 0x27, 0x10, 0xac, 0xad, 0xe2, 0x56 },
nexpaq 1:55a6170b404f 637 { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
nexpaq 1:55a6170b404f 638 0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
nexpaq 1:55a6170b404f 639 0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
nexpaq 1:55a6170b404f 640 0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
nexpaq 1:55a6170b404f 641 0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
nexpaq 1:55a6170b404f 642 0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
nexpaq 1:55a6170b404f 643 0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
nexpaq 1:55a6170b404f 644 0xcc, 0xda, 0x27, 0x10 },
nexpaq 1:55a6170b404f 645 { 0x0f, 0x10, 0xf5, 0x99, 0xae, 0x14, 0xa1, 0x54,
nexpaq 1:55a6170b404f 646 0xed, 0x24, 0xb3, 0x6e, 0x25, 0x32, 0x4d, 0xb8,
nexpaq 1:55a6170b404f 647 0xc5, 0x66, 0x63, 0x2e, 0xf2, 0xbb, 0xb3, 0x4f,
nexpaq 1:55a6170b404f 648 0x83, 0x47, 0x28, 0x0f, 0xc4, 0x50, 0x70, 0x57,
nexpaq 1:55a6170b404f 649 0xfd, 0xdc, 0x29, 0xdf, 0x9a, 0x47, 0x1f, 0x75,
nexpaq 1:55a6170b404f 650 0xc6, 0x65, 0x41, 0xd4, 0xd4, 0xda, 0xd1, 0xc9,
nexpaq 1:55a6170b404f 651 0xe9, 0x3a, 0x19, 0xa5, 0x8e, 0x8b, 0x47, 0x3f,
nexpaq 1:55a6170b404f 652 0xa0, 0xf0, 0x62, 0xf7 },
nexpaq 1:55a6170b404f 653 { 0xd2, 0x7e, 0x88, 0x68, 0x1c, 0xe3, 0x24, 0x3c,
nexpaq 1:55a6170b404f 654 0x48, 0x30, 0x16, 0x5a, 0x8f, 0xdc, 0xf9, 0xff,
nexpaq 1:55a6170b404f 655 0x1d, 0xe9, 0xa1, 0xd8, 0xe6, 0xb4, 0x47, 0xef,
nexpaq 1:55a6170b404f 656 0x6e, 0xf7, 0xb7, 0x98, 0x28, 0x66, 0x6e, 0x45,
nexpaq 1:55a6170b404f 657 0x81, 0xe7, 0x90, 0x12, 0xaf, 0x34, 0xdd, 0xd9,
nexpaq 1:55a6170b404f 658 0xe2, 0xf0, 0x37, 0x58, 0x9b, 0x29, 0x2d, 0xb3,
nexpaq 1:55a6170b404f 659 0xe6, 0x7c, 0x03, 0x67, 0x45, 0xfa, 0x22, 0xe7,
nexpaq 1:55a6170b404f 660 0xe9, 0xb7, 0x37, 0x3b },
nexpaq 1:55a6170b404f 661 { 0x00 },
nexpaq 1:55a6170b404f 662 { 0xce, 0xa7, 0x40, 0x3d, 0x4d, 0x60, 0x6b, 0x6e,
nexpaq 1:55a6170b404f 663 0x07, 0x4e, 0xc5, 0xd3, 0xba, 0xf3, 0x9d, 0x18 },
nexpaq 1:55a6170b404f 664 { 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,
nexpaq 1:55a6170b404f 665 0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,
nexpaq 1:55a6170b404f 666 0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,
nexpaq 1:55a6170b404f 667 0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,
nexpaq 1:55a6170b404f 668 0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,
nexpaq 1:55a6170b404f 669 0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,
nexpaq 1:55a6170b404f 670 0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,
nexpaq 1:55a6170b404f 671 0xbc, 0xc9, 0xf6, 0x62, 0x89, 0x80, 0x15, 0xad },
nexpaq 1:55a6170b404f 672 { 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,
nexpaq 1:55a6170b404f 673 0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,
nexpaq 1:55a6170b404f 674 0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,
nexpaq 1:55a6170b404f 675 0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,
nexpaq 1:55a6170b404f 676 0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,
nexpaq 1:55a6170b404f 677 0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,
nexpaq 1:55a6170b404f 678 0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,
nexpaq 1:55a6170b404f 679 0xbc, 0xc9, 0xf6, 0x62 },
nexpaq 1:55a6170b404f 680 { 0xc3, 0x76, 0x2d, 0xf1, 0xca, 0x78, 0x7d, 0x32,
nexpaq 1:55a6170b404f 681 0xae, 0x47, 0xc1, 0x3b, 0xf1, 0x98, 0x44, 0xcb,
nexpaq 1:55a6170b404f 682 0xaf, 0x1a, 0xe1, 0x4d, 0x0b, 0x97, 0x6a, 0xfa,
nexpaq 1:55a6170b404f 683 0xc5, 0x2f, 0xf7, 0xd7, 0x9b, 0xba, 0x9d, 0xe0,
nexpaq 1:55a6170b404f 684 0xfe, 0xb5, 0x82, 0xd3, 0x39, 0x34, 0xa4, 0xf0,
nexpaq 1:55a6170b404f 685 0x95, 0x4c, 0xc2, 0x36, 0x3b, 0xc7, 0x3f, 0x78,
nexpaq 1:55a6170b404f 686 0x62, 0xac, 0x43, 0x0e, 0x64, 0xab, 0xe4, 0x99,
nexpaq 1:55a6170b404f 687 0xf4, 0x7c, 0x9b, 0x1f },
nexpaq 1:55a6170b404f 688 { 0x5a, 0x8d, 0xef, 0x2f, 0x0c, 0x9e, 0x53, 0xf1,
nexpaq 1:55a6170b404f 689 0xf7, 0x5d, 0x78, 0x53, 0x65, 0x9e, 0x2a, 0x20,
nexpaq 1:55a6170b404f 690 0xee, 0xb2, 0xb2, 0x2a, 0xaf, 0xde, 0x64, 0x19,
nexpaq 1:55a6170b404f 691 0xa0, 0x58, 0xab, 0x4f, 0x6f, 0x74, 0x6b, 0xf4,
nexpaq 1:55a6170b404f 692 0x0f, 0xc0, 0xc3, 0xb7, 0x80, 0xf2, 0x44, 0x45,
nexpaq 1:55a6170b404f 693 0x2d, 0xa3, 0xeb, 0xf1, 0xc5, 0xd8, 0x2c, 0xde,
nexpaq 1:55a6170b404f 694 0xa2, 0x41, 0x89, 0x97, 0x20, 0x0e, 0xf8, 0x2e,
nexpaq 1:55a6170b404f 695 0x44, 0xae, 0x7e, 0x3f },
nexpaq 1:55a6170b404f 696 };
nexpaq 1:55a6170b404f 697
nexpaq 1:55a6170b404f 698 static const unsigned char tag[MAX_TESTS * 3][16] =
nexpaq 1:55a6170b404f 699 {
nexpaq 1:55a6170b404f 700 { 0x58, 0xe2, 0xfc, 0xce, 0xfa, 0x7e, 0x30, 0x61,
nexpaq 1:55a6170b404f 701 0x36, 0x7f, 0x1d, 0x57, 0xa4, 0xe7, 0x45, 0x5a },
nexpaq 1:55a6170b404f 702 { 0xab, 0x6e, 0x47, 0xd4, 0x2c, 0xec, 0x13, 0xbd,
nexpaq 1:55a6170b404f 703 0xf5, 0x3a, 0x67, 0xb2, 0x12, 0x57, 0xbd, 0xdf },
nexpaq 1:55a6170b404f 704 { 0x4d, 0x5c, 0x2a, 0xf3, 0x27, 0xcd, 0x64, 0xa6,
nexpaq 1:55a6170b404f 705 0x2c, 0xf3, 0x5a, 0xbd, 0x2b, 0xa6, 0xfa, 0xb4 },
nexpaq 1:55a6170b404f 706 { 0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,
nexpaq 1:55a6170b404f 707 0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47 },
nexpaq 1:55a6170b404f 708 { 0x36, 0x12, 0xd2, 0xe7, 0x9e, 0x3b, 0x07, 0x85,
nexpaq 1:55a6170b404f 709 0x56, 0x1b, 0xe1, 0x4a, 0xac, 0xa2, 0xfc, 0xcb },
nexpaq 1:55a6170b404f 710 { 0x61, 0x9c, 0xc5, 0xae, 0xff, 0xfe, 0x0b, 0xfa,
nexpaq 1:55a6170b404f 711 0x46, 0x2a, 0xf4, 0x3c, 0x16, 0x99, 0xd0, 0x50 },
nexpaq 1:55a6170b404f 712 { 0xcd, 0x33, 0xb2, 0x8a, 0xc7, 0x73, 0xf7, 0x4b,
nexpaq 1:55a6170b404f 713 0xa0, 0x0e, 0xd1, 0xf3, 0x12, 0x57, 0x24, 0x35 },
nexpaq 1:55a6170b404f 714 { 0x2f, 0xf5, 0x8d, 0x80, 0x03, 0x39, 0x27, 0xab,
nexpaq 1:55a6170b404f 715 0x8e, 0xf4, 0xd4, 0x58, 0x75, 0x14, 0xf0, 0xfb },
nexpaq 1:55a6170b404f 716 { 0x99, 0x24, 0xa7, 0xc8, 0x58, 0x73, 0x36, 0xbf,
nexpaq 1:55a6170b404f 717 0xb1, 0x18, 0x02, 0x4d, 0xb8, 0x67, 0x4a, 0x14 },
nexpaq 1:55a6170b404f 718 { 0x25, 0x19, 0x49, 0x8e, 0x80, 0xf1, 0x47, 0x8f,
nexpaq 1:55a6170b404f 719 0x37, 0xba, 0x55, 0xbd, 0x6d, 0x27, 0x61, 0x8c },
nexpaq 1:55a6170b404f 720 { 0x65, 0xdc, 0xc5, 0x7f, 0xcf, 0x62, 0x3a, 0x24,
nexpaq 1:55a6170b404f 721 0x09, 0x4f, 0xcc, 0xa4, 0x0d, 0x35, 0x33, 0xf8 },
nexpaq 1:55a6170b404f 722 { 0xdc, 0xf5, 0x66, 0xff, 0x29, 0x1c, 0x25, 0xbb,
nexpaq 1:55a6170b404f 723 0xb8, 0x56, 0x8f, 0xc3, 0xd3, 0x76, 0xa6, 0xd9 },
nexpaq 1:55a6170b404f 724 { 0x53, 0x0f, 0x8a, 0xfb, 0xc7, 0x45, 0x36, 0xb9,
nexpaq 1:55a6170b404f 725 0xa9, 0x63, 0xb4, 0xf1, 0xc4, 0xcb, 0x73, 0x8b },
nexpaq 1:55a6170b404f 726 { 0xd0, 0xd1, 0xc8, 0xa7, 0x99, 0x99, 0x6b, 0xf0,
nexpaq 1:55a6170b404f 727 0x26, 0x5b, 0x98, 0xb5, 0xd4, 0x8a, 0xb9, 0x19 },
nexpaq 1:55a6170b404f 728 { 0xb0, 0x94, 0xda, 0xc5, 0xd9, 0x34, 0x71, 0xbd,
nexpaq 1:55a6170b404f 729 0xec, 0x1a, 0x50, 0x22, 0x70, 0xe3, 0xcc, 0x6c },
nexpaq 1:55a6170b404f 730 { 0x76, 0xfc, 0x6e, 0xce, 0x0f, 0x4e, 0x17, 0x68,
nexpaq 1:55a6170b404f 731 0xcd, 0xdf, 0x88, 0x53, 0xbb, 0x2d, 0x55, 0x1b },
nexpaq 1:55a6170b404f 732 { 0x3a, 0x33, 0x7d, 0xbf, 0x46, 0xa7, 0x92, 0xc4,
nexpaq 1:55a6170b404f 733 0x5e, 0x45, 0x49, 0x13, 0xfe, 0x2e, 0xa8, 0xf2 },
nexpaq 1:55a6170b404f 734 { 0xa4, 0x4a, 0x82, 0x66, 0xee, 0x1c, 0x8e, 0xb0,
nexpaq 1:55a6170b404f 735 0xc8, 0xb5, 0xd4, 0xcf, 0x5a, 0xe9, 0xf1, 0x9a },
nexpaq 1:55a6170b404f 736 };
nexpaq 1:55a6170b404f 737
nexpaq 1:55a6170b404f 738 int mbedtls_gcm_self_test( int verbose )
nexpaq 1:55a6170b404f 739 {
nexpaq 1:55a6170b404f 740 mbedtls_gcm_context ctx;
nexpaq 1:55a6170b404f 741 unsigned char buf[64];
nexpaq 1:55a6170b404f 742 unsigned char tag_buf[16];
nexpaq 1:55a6170b404f 743 int i, j, ret;
nexpaq 1:55a6170b404f 744 mbedtls_cipher_id_t cipher = MBEDTLS_CIPHER_ID_AES;
nexpaq 1:55a6170b404f 745
nexpaq 1:55a6170b404f 746 mbedtls_gcm_init( &ctx );
nexpaq 1:55a6170b404f 747
nexpaq 1:55a6170b404f 748 for( j = 0; j < 3; j++ )
nexpaq 1:55a6170b404f 749 {
nexpaq 1:55a6170b404f 750 int key_len = 128 + 64 * j;
nexpaq 1:55a6170b404f 751
nexpaq 1:55a6170b404f 752 for( i = 0; i < MAX_TESTS; i++ )
nexpaq 1:55a6170b404f 753 {
nexpaq 1:55a6170b404f 754 if( verbose != 0 )
nexpaq 1:55a6170b404f 755 mbedtls_printf( " AES-GCM-%3d #%d (%s): ",
nexpaq 1:55a6170b404f 756 key_len, i, "enc" );
nexpaq 1:55a6170b404f 757
nexpaq 1:55a6170b404f 758 mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]], key_len );
nexpaq 1:55a6170b404f 759
nexpaq 1:55a6170b404f 760 ret = mbedtls_gcm_crypt_and_tag( &ctx, MBEDTLS_GCM_ENCRYPT,
nexpaq 1:55a6170b404f 761 pt_len[i],
nexpaq 1:55a6170b404f 762 iv[iv_index[i]], iv_len[i],
nexpaq 1:55a6170b404f 763 additional[add_index[i]], add_len[i],
nexpaq 1:55a6170b404f 764 pt[pt_index[i]], buf, 16, tag_buf );
nexpaq 1:55a6170b404f 765
nexpaq 1:55a6170b404f 766 if( ret != 0 ||
nexpaq 1:55a6170b404f 767 memcmp( buf, ct[j * 6 + i], pt_len[i] ) != 0 ||
nexpaq 1:55a6170b404f 768 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
nexpaq 1:55a6170b404f 769 {
nexpaq 1:55a6170b404f 770 if( verbose != 0 )
nexpaq 1:55a6170b404f 771 mbedtls_printf( "failed\n" );
nexpaq 1:55a6170b404f 772
nexpaq 1:55a6170b404f 773 return( 1 );
nexpaq 1:55a6170b404f 774 }
nexpaq 1:55a6170b404f 775
nexpaq 1:55a6170b404f 776 mbedtls_gcm_free( &ctx );
nexpaq 1:55a6170b404f 777
nexpaq 1:55a6170b404f 778 if( verbose != 0 )
nexpaq 1:55a6170b404f 779 mbedtls_printf( "passed\n" );
nexpaq 1:55a6170b404f 780
nexpaq 1:55a6170b404f 781 if( verbose != 0 )
nexpaq 1:55a6170b404f 782 mbedtls_printf( " AES-GCM-%3d #%d (%s): ",
nexpaq 1:55a6170b404f 783 key_len, i, "dec" );
nexpaq 1:55a6170b404f 784
nexpaq 1:55a6170b404f 785 mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]], key_len );
nexpaq 1:55a6170b404f 786
nexpaq 1:55a6170b404f 787 ret = mbedtls_gcm_crypt_and_tag( &ctx, MBEDTLS_GCM_DECRYPT,
nexpaq 1:55a6170b404f 788 pt_len[i],
nexpaq 1:55a6170b404f 789 iv[iv_index[i]], iv_len[i],
nexpaq 1:55a6170b404f 790 additional[add_index[i]], add_len[i],
nexpaq 1:55a6170b404f 791 ct[j * 6 + i], buf, 16, tag_buf );
nexpaq 1:55a6170b404f 792
nexpaq 1:55a6170b404f 793 if( ret != 0 ||
nexpaq 1:55a6170b404f 794 memcmp( buf, pt[pt_index[i]], pt_len[i] ) != 0 ||
nexpaq 1:55a6170b404f 795 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
nexpaq 1:55a6170b404f 796 {
nexpaq 1:55a6170b404f 797 if( verbose != 0 )
nexpaq 1:55a6170b404f 798 mbedtls_printf( "failed\n" );
nexpaq 1:55a6170b404f 799
nexpaq 1:55a6170b404f 800 return( 1 );
nexpaq 1:55a6170b404f 801 }
nexpaq 1:55a6170b404f 802
nexpaq 1:55a6170b404f 803 mbedtls_gcm_free( &ctx );
nexpaq 1:55a6170b404f 804
nexpaq 1:55a6170b404f 805 if( verbose != 0 )
nexpaq 1:55a6170b404f 806 mbedtls_printf( "passed\n" );
nexpaq 1:55a6170b404f 807
nexpaq 1:55a6170b404f 808 if( verbose != 0 )
nexpaq 1:55a6170b404f 809 mbedtls_printf( " AES-GCM-%3d #%d split (%s): ",
nexpaq 1:55a6170b404f 810 key_len, i, "enc" );
nexpaq 1:55a6170b404f 811
nexpaq 1:55a6170b404f 812 mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]], key_len );
nexpaq 1:55a6170b404f 813
nexpaq 1:55a6170b404f 814 ret = mbedtls_gcm_starts( &ctx, MBEDTLS_GCM_ENCRYPT,
nexpaq 1:55a6170b404f 815 iv[iv_index[i]], iv_len[i],
nexpaq 1:55a6170b404f 816 additional[add_index[i]], add_len[i] );
nexpaq 1:55a6170b404f 817 if( ret != 0 )
nexpaq 1:55a6170b404f 818 {
nexpaq 1:55a6170b404f 819 if( verbose != 0 )
nexpaq 1:55a6170b404f 820 mbedtls_printf( "failed\n" );
nexpaq 1:55a6170b404f 821
nexpaq 1:55a6170b404f 822 return( 1 );
nexpaq 1:55a6170b404f 823 }
nexpaq 1:55a6170b404f 824
nexpaq 1:55a6170b404f 825 if( pt_len[i] > 32 )
nexpaq 1:55a6170b404f 826 {
nexpaq 1:55a6170b404f 827 size_t rest_len = pt_len[i] - 32;
nexpaq 1:55a6170b404f 828 ret = mbedtls_gcm_update( &ctx, 32, pt[pt_index[i]], buf );
nexpaq 1:55a6170b404f 829 if( ret != 0 )
nexpaq 1:55a6170b404f 830 {
nexpaq 1:55a6170b404f 831 if( verbose != 0 )
nexpaq 1:55a6170b404f 832 mbedtls_printf( "failed\n" );
nexpaq 1:55a6170b404f 833
nexpaq 1:55a6170b404f 834 return( 1 );
nexpaq 1:55a6170b404f 835 }
nexpaq 1:55a6170b404f 836
nexpaq 1:55a6170b404f 837 ret = mbedtls_gcm_update( &ctx, rest_len, pt[pt_index[i]] + 32,
nexpaq 1:55a6170b404f 838 buf + 32 );
nexpaq 1:55a6170b404f 839 if( ret != 0 )
nexpaq 1:55a6170b404f 840 {
nexpaq 1:55a6170b404f 841 if( verbose != 0 )
nexpaq 1:55a6170b404f 842 mbedtls_printf( "failed\n" );
nexpaq 1:55a6170b404f 843
nexpaq 1:55a6170b404f 844 return( 1 );
nexpaq 1:55a6170b404f 845 }
nexpaq 1:55a6170b404f 846 }
nexpaq 1:55a6170b404f 847 else
nexpaq 1:55a6170b404f 848 {
nexpaq 1:55a6170b404f 849 ret = mbedtls_gcm_update( &ctx, pt_len[i], pt[pt_index[i]], buf );
nexpaq 1:55a6170b404f 850 if( ret != 0 )
nexpaq 1:55a6170b404f 851 {
nexpaq 1:55a6170b404f 852 if( verbose != 0 )
nexpaq 1:55a6170b404f 853 mbedtls_printf( "failed\n" );
nexpaq 1:55a6170b404f 854
nexpaq 1:55a6170b404f 855 return( 1 );
nexpaq 1:55a6170b404f 856 }
nexpaq 1:55a6170b404f 857 }
nexpaq 1:55a6170b404f 858
nexpaq 1:55a6170b404f 859 ret = mbedtls_gcm_finish( &ctx, tag_buf, 16 );
nexpaq 1:55a6170b404f 860 if( ret != 0 ||
nexpaq 1:55a6170b404f 861 memcmp( buf, ct[j * 6 + i], pt_len[i] ) != 0 ||
nexpaq 1:55a6170b404f 862 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
nexpaq 1:55a6170b404f 863 {
nexpaq 1:55a6170b404f 864 if( verbose != 0 )
nexpaq 1:55a6170b404f 865 mbedtls_printf( "failed\n" );
nexpaq 1:55a6170b404f 866
nexpaq 1:55a6170b404f 867 return( 1 );
nexpaq 1:55a6170b404f 868 }
nexpaq 1:55a6170b404f 869
nexpaq 1:55a6170b404f 870 mbedtls_gcm_free( &ctx );
nexpaq 1:55a6170b404f 871
nexpaq 1:55a6170b404f 872 if( verbose != 0 )
nexpaq 1:55a6170b404f 873 mbedtls_printf( "passed\n" );
nexpaq 1:55a6170b404f 874
nexpaq 1:55a6170b404f 875 if( verbose != 0 )
nexpaq 1:55a6170b404f 876 mbedtls_printf( " AES-GCM-%3d #%d split (%s): ",
nexpaq 1:55a6170b404f 877 key_len, i, "dec" );
nexpaq 1:55a6170b404f 878
nexpaq 1:55a6170b404f 879 mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]], key_len );
nexpaq 1:55a6170b404f 880
nexpaq 1:55a6170b404f 881 ret = mbedtls_gcm_starts( &ctx, MBEDTLS_GCM_DECRYPT,
nexpaq 1:55a6170b404f 882 iv[iv_index[i]], iv_len[i],
nexpaq 1:55a6170b404f 883 additional[add_index[i]], add_len[i] );
nexpaq 1:55a6170b404f 884 if( ret != 0 )
nexpaq 1:55a6170b404f 885 {
nexpaq 1:55a6170b404f 886 if( verbose != 0 )
nexpaq 1:55a6170b404f 887 mbedtls_printf( "failed\n" );
nexpaq 1:55a6170b404f 888
nexpaq 1:55a6170b404f 889 return( 1 );
nexpaq 1:55a6170b404f 890 }
nexpaq 1:55a6170b404f 891
nexpaq 1:55a6170b404f 892 if( pt_len[i] > 32 )
nexpaq 1:55a6170b404f 893 {
nexpaq 1:55a6170b404f 894 size_t rest_len = pt_len[i] - 32;
nexpaq 1:55a6170b404f 895 ret = mbedtls_gcm_update( &ctx, 32, ct[j * 6 + i], buf );
nexpaq 1:55a6170b404f 896 if( ret != 0 )
nexpaq 1:55a6170b404f 897 {
nexpaq 1:55a6170b404f 898 if( verbose != 0 )
nexpaq 1:55a6170b404f 899 mbedtls_printf( "failed\n" );
nexpaq 1:55a6170b404f 900
nexpaq 1:55a6170b404f 901 return( 1 );
nexpaq 1:55a6170b404f 902 }
nexpaq 1:55a6170b404f 903
nexpaq 1:55a6170b404f 904 ret = mbedtls_gcm_update( &ctx, rest_len, ct[j * 6 + i] + 32,
nexpaq 1:55a6170b404f 905 buf + 32 );
nexpaq 1:55a6170b404f 906 if( ret != 0 )
nexpaq 1:55a6170b404f 907 {
nexpaq 1:55a6170b404f 908 if( verbose != 0 )
nexpaq 1:55a6170b404f 909 mbedtls_printf( "failed\n" );
nexpaq 1:55a6170b404f 910
nexpaq 1:55a6170b404f 911 return( 1 );
nexpaq 1:55a6170b404f 912 }
nexpaq 1:55a6170b404f 913 }
nexpaq 1:55a6170b404f 914 else
nexpaq 1:55a6170b404f 915 {
nexpaq 1:55a6170b404f 916 ret = mbedtls_gcm_update( &ctx, pt_len[i], ct[j * 6 + i], buf );
nexpaq 1:55a6170b404f 917 if( ret != 0 )
nexpaq 1:55a6170b404f 918 {
nexpaq 1:55a6170b404f 919 if( verbose != 0 )
nexpaq 1:55a6170b404f 920 mbedtls_printf( "failed\n" );
nexpaq 1:55a6170b404f 921
nexpaq 1:55a6170b404f 922 return( 1 );
nexpaq 1:55a6170b404f 923 }
nexpaq 1:55a6170b404f 924 }
nexpaq 1:55a6170b404f 925
nexpaq 1:55a6170b404f 926 ret = mbedtls_gcm_finish( &ctx, tag_buf, 16 );
nexpaq 1:55a6170b404f 927 if( ret != 0 ||
nexpaq 1:55a6170b404f 928 memcmp( buf, pt[pt_index[i]], pt_len[i] ) != 0 ||
nexpaq 1:55a6170b404f 929 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
nexpaq 1:55a6170b404f 930 {
nexpaq 1:55a6170b404f 931 if( verbose != 0 )
nexpaq 1:55a6170b404f 932 mbedtls_printf( "failed\n" );
nexpaq 1:55a6170b404f 933
nexpaq 1:55a6170b404f 934 return( 1 );
nexpaq 1:55a6170b404f 935 }
nexpaq 1:55a6170b404f 936
nexpaq 1:55a6170b404f 937 mbedtls_gcm_free( &ctx );
nexpaq 1:55a6170b404f 938
nexpaq 1:55a6170b404f 939 if( verbose != 0 )
nexpaq 1:55a6170b404f 940 mbedtls_printf( "passed\n" );
nexpaq 1:55a6170b404f 941
nexpaq 1:55a6170b404f 942 }
nexpaq 1:55a6170b404f 943 }
nexpaq 1:55a6170b404f 944
nexpaq 1:55a6170b404f 945 if( verbose != 0 )
nexpaq 1:55a6170b404f 946 mbedtls_printf( "\n" );
nexpaq 1:55a6170b404f 947
nexpaq 1:55a6170b404f 948 return( 0 );
nexpaq 1:55a6170b404f 949 }
nexpaq 1:55a6170b404f 950
nexpaq 1:55a6170b404f 951 #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
nexpaq 1:55a6170b404f 952
nexpaq 1:55a6170b404f 953 #endif /* MBEDTLS_GCM_C */