Nicolas Borla / Mbed OS BBR_1Ebene

BBR 1 Ebene

mbed-os/features/mbedtls/src/gcm.c@0:fbdae7e6d805, 2018-05-14 (annotated)

Committer:
borlanic
Date:
Mon May 14 11:29:06 2018 +0000
Revision:
0:fbdae7e6d805
BBR

Who changed what in which revision?

UserRevisionLine numberNew contents of line
borlanic 0:fbdae7e6d805 1 /*
borlanic 0:fbdae7e6d805 2 * NIST SP800-38D compliant GCM implementation
borlanic 0:fbdae7e6d805 3 *
borlanic 0:fbdae7e6d805 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
borlanic 0:fbdae7e6d805 5 * SPDX-License-Identifier: Apache-2.0
borlanic 0:fbdae7e6d805 6 *
borlanic 0:fbdae7e6d805 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
borlanic 0:fbdae7e6d805 8 * not use this file except in compliance with the License.
borlanic 0:fbdae7e6d805 9 * You may obtain a copy of the License at
borlanic 0:fbdae7e6d805 10 *
borlanic 0:fbdae7e6d805 11 * http://www.apache.org/licenses/LICENSE-2.0
borlanic 0:fbdae7e6d805 12 *
borlanic 0:fbdae7e6d805 13 * Unless required by applicable law or agreed to in writing, software
borlanic 0:fbdae7e6d805 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
borlanic 0:fbdae7e6d805 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
borlanic 0:fbdae7e6d805 16 * See the License for the specific language governing permissions and
borlanic 0:fbdae7e6d805 17 * limitations under the License.
borlanic 0:fbdae7e6d805 18 *
borlanic 0:fbdae7e6d805 19 * This file is part of mbed TLS (https://tls.mbed.org)
borlanic 0:fbdae7e6d805 20 */
borlanic 0:fbdae7e6d805 21
borlanic 0:fbdae7e6d805 22 /*
borlanic 0:fbdae7e6d805 23 * http://csrc.nist.gov/publications/nistpubs/800-38D/SP-800-38D.pdf
borlanic 0:fbdae7e6d805 24 *
borlanic 0:fbdae7e6d805 25 * See also:
borlanic 0:fbdae7e6d805 26 * [MGV] http://csrc.nist.gov/groups/ST/toolkit/BCM/documents/proposedmodes/gcm/gcm-revised-spec.pdf
borlanic 0:fbdae7e6d805 27 *
borlanic 0:fbdae7e6d805 28 * We use the algorithm described as Shoup's method with 4-bit tables in
borlanic 0:fbdae7e6d805 29 * [MGV] 4.1, pp. 12-13, to enhance speed without using too much memory.
borlanic 0:fbdae7e6d805 30 */
borlanic 0:fbdae7e6d805 31
borlanic 0:fbdae7e6d805 32 #if !defined(MBEDTLS_CONFIG_FILE)
borlanic 0:fbdae7e6d805 33 #include "mbedtls/config.h"
borlanic 0:fbdae7e6d805 34 #else
borlanic 0:fbdae7e6d805 35 #include MBEDTLS_CONFIG_FILE
borlanic 0:fbdae7e6d805 36 #endif
borlanic 0:fbdae7e6d805 37
borlanic 0:fbdae7e6d805 38 #if defined(MBEDTLS_GCM_C)
borlanic 0:fbdae7e6d805 39
borlanic 0:fbdae7e6d805 40 #include "mbedtls/gcm.h"
borlanic 0:fbdae7e6d805 41
borlanic 0:fbdae7e6d805 42 #include <string.h>
borlanic 0:fbdae7e6d805 43
borlanic 0:fbdae7e6d805 44 #if defined(MBEDTLS_AESNI_C)
borlanic 0:fbdae7e6d805 45 #include "mbedtls/aesni.h"
borlanic 0:fbdae7e6d805 46 #endif
borlanic 0:fbdae7e6d805 47
borlanic 0:fbdae7e6d805 48 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
borlanic 0:fbdae7e6d805 49 #include "mbedtls/aes.h"
borlanic 0:fbdae7e6d805 50 #if defined(MBEDTLS_PLATFORM_C)
borlanic 0:fbdae7e6d805 51 #include "mbedtls/platform.h"
borlanic 0:fbdae7e6d805 52 #else
borlanic 0:fbdae7e6d805 53 #include <stdio.h>
borlanic 0:fbdae7e6d805 54 #define mbedtls_printf printf
borlanic 0:fbdae7e6d805 55 #endif /* MBEDTLS_PLATFORM_C */
borlanic 0:fbdae7e6d805 56 #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
borlanic 0:fbdae7e6d805 57
borlanic 0:fbdae7e6d805 58 #if !defined(MBEDTLS_GCM_ALT)
borlanic 0:fbdae7e6d805 59
borlanic 0:fbdae7e6d805 60 /*
borlanic 0:fbdae7e6d805 61 * 32-bit integer manipulation macros (big endian)
borlanic 0:fbdae7e6d805 62 */
borlanic 0:fbdae7e6d805 63 #ifndef GET_UINT32_BE
borlanic 0:fbdae7e6d805 64 #define GET_UINT32_BE(n,b,i) \
borlanic 0:fbdae7e6d805 65 { \
borlanic 0:fbdae7e6d805 66 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
borlanic 0:fbdae7e6d805 67 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
borlanic 0:fbdae7e6d805 68 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
borlanic 0:fbdae7e6d805 69 | ( (uint32_t) (b)[(i) + 3] ); \
borlanic 0:fbdae7e6d805 70 }
borlanic 0:fbdae7e6d805 71 #endif
borlanic 0:fbdae7e6d805 72
borlanic 0:fbdae7e6d805 73 #ifndef PUT_UINT32_BE
borlanic 0:fbdae7e6d805 74 #define PUT_UINT32_BE(n,b,i) \
borlanic 0:fbdae7e6d805 75 { \
borlanic 0:fbdae7e6d805 76 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
borlanic 0:fbdae7e6d805 77 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
borlanic 0:fbdae7e6d805 78 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
borlanic 0:fbdae7e6d805 79 (b)[(i) + 3] = (unsigned char) ( (n) ); \
borlanic 0:fbdae7e6d805 80 }
borlanic 0:fbdae7e6d805 81 #endif
borlanic 0:fbdae7e6d805 82
borlanic 0:fbdae7e6d805 83 /* Implementation that should never be optimized out by the compiler */
borlanic 0:fbdae7e6d805 84 static void mbedtls_zeroize( void *v, size_t n ) {
borlanic 0:fbdae7e6d805 85 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
borlanic 0:fbdae7e6d805 86 }
borlanic 0:fbdae7e6d805 87
borlanic 0:fbdae7e6d805 88 /*
borlanic 0:fbdae7e6d805 89 * Initialize a context
borlanic 0:fbdae7e6d805 90 */
borlanic 0:fbdae7e6d805 91 void mbedtls_gcm_init( mbedtls_gcm_context *ctx )
borlanic 0:fbdae7e6d805 92 {
borlanic 0:fbdae7e6d805 93 memset( ctx, 0, sizeof( mbedtls_gcm_context ) );
borlanic 0:fbdae7e6d805 94 }
borlanic 0:fbdae7e6d805 95
borlanic 0:fbdae7e6d805 96 /*
borlanic 0:fbdae7e6d805 97 * Precompute small multiples of H, that is set
borlanic 0:fbdae7e6d805 98 * HH[i] || HL[i] = H times i,
borlanic 0:fbdae7e6d805 99 * where i is seen as a field element as in [MGV], ie high-order bits
borlanic 0:fbdae7e6d805 100 * correspond to low powers of P. The result is stored in the same way, that
borlanic 0:fbdae7e6d805 101 * is the high-order bit of HH corresponds to P^0 and the low-order bit of HL
borlanic 0:fbdae7e6d805 102 * corresponds to P^127.
borlanic 0:fbdae7e6d805 103 */
borlanic 0:fbdae7e6d805 104 static int gcm_gen_table( mbedtls_gcm_context *ctx )
borlanic 0:fbdae7e6d805 105 {
borlanic 0:fbdae7e6d805 106 int ret, i, j;
borlanic 0:fbdae7e6d805 107 uint64_t hi, lo;
borlanic 0:fbdae7e6d805 108 uint64_t vl, vh;
borlanic 0:fbdae7e6d805 109 unsigned char h[16];
borlanic 0:fbdae7e6d805 110 size_t olen = 0;
borlanic 0:fbdae7e6d805 111
borlanic 0:fbdae7e6d805 112 memset( h, 0, 16 );
borlanic 0:fbdae7e6d805 113 if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, h, 16, h, &olen ) ) != 0 )
borlanic 0:fbdae7e6d805 114 return( ret );
borlanic 0:fbdae7e6d805 115
borlanic 0:fbdae7e6d805 116 /* pack h as two 64-bits ints, big-endian */
borlanic 0:fbdae7e6d805 117 GET_UINT32_BE( hi, h, 0 );
borlanic 0:fbdae7e6d805 118 GET_UINT32_BE( lo, h, 4 );
borlanic 0:fbdae7e6d805 119 vh = (uint64_t) hi << 32 | lo;
borlanic 0:fbdae7e6d805 120
borlanic 0:fbdae7e6d805 121 GET_UINT32_BE( hi, h, 8 );
borlanic 0:fbdae7e6d805 122 GET_UINT32_BE( lo, h, 12 );
borlanic 0:fbdae7e6d805 123 vl = (uint64_t) hi << 32 | lo;
borlanic 0:fbdae7e6d805 124
borlanic 0:fbdae7e6d805 125 /* 8 = 1000 corresponds to 1 in GF(2^128) */
borlanic 0:fbdae7e6d805 126 ctx->HL[8] = vl;
borlanic 0:fbdae7e6d805 127 ctx->HH[8] = vh;
borlanic 0:fbdae7e6d805 128
borlanic 0:fbdae7e6d805 129 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
borlanic 0:fbdae7e6d805 130 /* With CLMUL support, we need only h, not the rest of the table */
borlanic 0:fbdae7e6d805 131 if( mbedtls_aesni_has_support( MBEDTLS_AESNI_CLMUL ) )
borlanic 0:fbdae7e6d805 132 return( 0 );
borlanic 0:fbdae7e6d805 133 #endif
borlanic 0:fbdae7e6d805 134
borlanic 0:fbdae7e6d805 135 /* 0 corresponds to 0 in GF(2^128) */
borlanic 0:fbdae7e6d805 136 ctx->HH[0] = 0;
borlanic 0:fbdae7e6d805 137 ctx->HL[0] = 0;
borlanic 0:fbdae7e6d805 138
borlanic 0:fbdae7e6d805 139 for( i = 4; i > 0; i >>= 1 )
borlanic 0:fbdae7e6d805 140 {
borlanic 0:fbdae7e6d805 141 uint32_t T = ( vl & 1 ) * 0xe1000000U;
borlanic 0:fbdae7e6d805 142 vl = ( vh << 63 ) | ( vl >> 1 );
borlanic 0:fbdae7e6d805 143 vh = ( vh >> 1 ) ^ ( (uint64_t) T << 32);
borlanic 0:fbdae7e6d805 144
borlanic 0:fbdae7e6d805 145 ctx->HL[i] = vl;
borlanic 0:fbdae7e6d805 146 ctx->HH[i] = vh;
borlanic 0:fbdae7e6d805 147 }
borlanic 0:fbdae7e6d805 148
borlanic 0:fbdae7e6d805 149 for( i = 2; i <= 8; i *= 2 )
borlanic 0:fbdae7e6d805 150 {
borlanic 0:fbdae7e6d805 151 uint64_t *HiL = ctx->HL + i, *HiH = ctx->HH + i;
borlanic 0:fbdae7e6d805 152 vh = *HiH;
borlanic 0:fbdae7e6d805 153 vl = *HiL;
borlanic 0:fbdae7e6d805 154 for( j = 1; j < i; j++ )
borlanic 0:fbdae7e6d805 155 {
borlanic 0:fbdae7e6d805 156 HiH[j] = vh ^ ctx->HH[j];
borlanic 0:fbdae7e6d805 157 HiL[j] = vl ^ ctx->HL[j];
borlanic 0:fbdae7e6d805 158 }
borlanic 0:fbdae7e6d805 159 }
borlanic 0:fbdae7e6d805 160
borlanic 0:fbdae7e6d805 161 return( 0 );
borlanic 0:fbdae7e6d805 162 }
borlanic 0:fbdae7e6d805 163
borlanic 0:fbdae7e6d805 164 int mbedtls_gcm_setkey( mbedtls_gcm_context *ctx,
borlanic 0:fbdae7e6d805 165 mbedtls_cipher_id_t cipher,
borlanic 0:fbdae7e6d805 166 const unsigned char *key,
borlanic 0:fbdae7e6d805 167 unsigned int keybits )
borlanic 0:fbdae7e6d805 168 {
borlanic 0:fbdae7e6d805 169 int ret;
borlanic 0:fbdae7e6d805 170 const mbedtls_cipher_info_t *cipher_info;
borlanic 0:fbdae7e6d805 171
borlanic 0:fbdae7e6d805 172 cipher_info = mbedtls_cipher_info_from_values( cipher, keybits, MBEDTLS_MODE_ECB );
borlanic 0:fbdae7e6d805 173 if( cipher_info == NULL )
borlanic 0:fbdae7e6d805 174 return( MBEDTLS_ERR_GCM_BAD_INPUT );
borlanic 0:fbdae7e6d805 175
borlanic 0:fbdae7e6d805 176 if( cipher_info->block_size != 16 )
borlanic 0:fbdae7e6d805 177 return( MBEDTLS_ERR_GCM_BAD_INPUT );
borlanic 0:fbdae7e6d805 178
borlanic 0:fbdae7e6d805 179 mbedtls_cipher_free( &ctx->cipher_ctx );
borlanic 0:fbdae7e6d805 180
borlanic 0:fbdae7e6d805 181 if( ( ret = mbedtls_cipher_setup( &ctx->cipher_ctx, cipher_info ) ) != 0 )
borlanic 0:fbdae7e6d805 182 return( ret );
borlanic 0:fbdae7e6d805 183
borlanic 0:fbdae7e6d805 184 if( ( ret = mbedtls_cipher_setkey( &ctx->cipher_ctx, key, keybits,
borlanic 0:fbdae7e6d805 185 MBEDTLS_ENCRYPT ) ) != 0 )
borlanic 0:fbdae7e6d805 186 {
borlanic 0:fbdae7e6d805 187 return( ret );
borlanic 0:fbdae7e6d805 188 }
borlanic 0:fbdae7e6d805 189
borlanic 0:fbdae7e6d805 190 if( ( ret = gcm_gen_table( ctx ) ) != 0 )
borlanic 0:fbdae7e6d805 191 return( ret );
borlanic 0:fbdae7e6d805 192
borlanic 0:fbdae7e6d805 193 return( 0 );
borlanic 0:fbdae7e6d805 194 }
borlanic 0:fbdae7e6d805 195
borlanic 0:fbdae7e6d805 196 /*
borlanic 0:fbdae7e6d805 197 * Shoup's method for multiplication use this table with
borlanic 0:fbdae7e6d805 198 * last4[x] = x times P^128
borlanic 0:fbdae7e6d805 199 * where x and last4[x] are seen as elements of GF(2^128) as in [MGV]
borlanic 0:fbdae7e6d805 200 */
borlanic 0:fbdae7e6d805 201 static const uint64_t last4[16] =
borlanic 0:fbdae7e6d805 202 {
borlanic 0:fbdae7e6d805 203 0x0000, 0x1c20, 0x3840, 0x2460,
borlanic 0:fbdae7e6d805 204 0x7080, 0x6ca0, 0x48c0, 0x54e0,
borlanic 0:fbdae7e6d805 205 0xe100, 0xfd20, 0xd940, 0xc560,
borlanic 0:fbdae7e6d805 206 0x9180, 0x8da0, 0xa9c0, 0xb5e0
borlanic 0:fbdae7e6d805 207 };
borlanic 0:fbdae7e6d805 208
borlanic 0:fbdae7e6d805 209 /*
borlanic 0:fbdae7e6d805 210 * Sets output to x times H using the precomputed tables.
borlanic 0:fbdae7e6d805 211 * x and output are seen as elements of GF(2^128) as in [MGV].
borlanic 0:fbdae7e6d805 212 */
borlanic 0:fbdae7e6d805 213 static void gcm_mult( mbedtls_gcm_context *ctx, const unsigned char x[16],
borlanic 0:fbdae7e6d805 214 unsigned char output[16] )
borlanic 0:fbdae7e6d805 215 {
borlanic 0:fbdae7e6d805 216 int i = 0;
borlanic 0:fbdae7e6d805 217 unsigned char lo, hi, rem;
borlanic 0:fbdae7e6d805 218 uint64_t zh, zl;
borlanic 0:fbdae7e6d805 219
borlanic 0:fbdae7e6d805 220 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
borlanic 0:fbdae7e6d805 221 if( mbedtls_aesni_has_support( MBEDTLS_AESNI_CLMUL ) ) {
borlanic 0:fbdae7e6d805 222 unsigned char h[16];
borlanic 0:fbdae7e6d805 223
borlanic 0:fbdae7e6d805 224 PUT_UINT32_BE( ctx->HH[8] >> 32, h, 0 );
borlanic 0:fbdae7e6d805 225 PUT_UINT32_BE( ctx->HH[8], h, 4 );
borlanic 0:fbdae7e6d805 226 PUT_UINT32_BE( ctx->HL[8] >> 32, h, 8 );
borlanic 0:fbdae7e6d805 227 PUT_UINT32_BE( ctx->HL[8], h, 12 );
borlanic 0:fbdae7e6d805 228
borlanic 0:fbdae7e6d805 229 mbedtls_aesni_gcm_mult( output, x, h );
borlanic 0:fbdae7e6d805 230 return;
borlanic 0:fbdae7e6d805 231 }
borlanic 0:fbdae7e6d805 232 #endif /* MBEDTLS_AESNI_C && MBEDTLS_HAVE_X86_64 */
borlanic 0:fbdae7e6d805 233
borlanic 0:fbdae7e6d805 234 lo = x[15] & 0xf;
borlanic 0:fbdae7e6d805 235
borlanic 0:fbdae7e6d805 236 zh = ctx->HH[lo];
borlanic 0:fbdae7e6d805 237 zl = ctx->HL[lo];
borlanic 0:fbdae7e6d805 238
borlanic 0:fbdae7e6d805 239 for( i = 15; i >= 0; i-- )
borlanic 0:fbdae7e6d805 240 {
borlanic 0:fbdae7e6d805 241 lo = x[i] & 0xf;
borlanic 0:fbdae7e6d805 242 hi = x[i] >> 4;
borlanic 0:fbdae7e6d805 243
borlanic 0:fbdae7e6d805 244 if( i != 15 )
borlanic 0:fbdae7e6d805 245 {
borlanic 0:fbdae7e6d805 246 rem = (unsigned char) zl & 0xf;
borlanic 0:fbdae7e6d805 247 zl = ( zh << 60 ) | ( zl >> 4 );
borlanic 0:fbdae7e6d805 248 zh = ( zh >> 4 );
borlanic 0:fbdae7e6d805 249 zh ^= (uint64_t) last4[rem] << 48;
borlanic 0:fbdae7e6d805 250 zh ^= ctx->HH[lo];
borlanic 0:fbdae7e6d805 251 zl ^= ctx->HL[lo];
borlanic 0:fbdae7e6d805 252
borlanic 0:fbdae7e6d805 253 }
borlanic 0:fbdae7e6d805 254
borlanic 0:fbdae7e6d805 255 rem = (unsigned char) zl & 0xf;
borlanic 0:fbdae7e6d805 256 zl = ( zh << 60 ) | ( zl >> 4 );
borlanic 0:fbdae7e6d805 257 zh = ( zh >> 4 );
borlanic 0:fbdae7e6d805 258 zh ^= (uint64_t) last4[rem] << 48;
borlanic 0:fbdae7e6d805 259 zh ^= ctx->HH[hi];
borlanic 0:fbdae7e6d805 260 zl ^= ctx->HL[hi];
borlanic 0:fbdae7e6d805 261 }
borlanic 0:fbdae7e6d805 262
borlanic 0:fbdae7e6d805 263 PUT_UINT32_BE( zh >> 32, output, 0 );
borlanic 0:fbdae7e6d805 264 PUT_UINT32_BE( zh, output, 4 );
borlanic 0:fbdae7e6d805 265 PUT_UINT32_BE( zl >> 32, output, 8 );
borlanic 0:fbdae7e6d805 266 PUT_UINT32_BE( zl, output, 12 );
borlanic 0:fbdae7e6d805 267 }
borlanic 0:fbdae7e6d805 268
borlanic 0:fbdae7e6d805 269 int mbedtls_gcm_starts( mbedtls_gcm_context *ctx,
borlanic 0:fbdae7e6d805 270 int mode,
borlanic 0:fbdae7e6d805 271 const unsigned char *iv,
borlanic 0:fbdae7e6d805 272 size_t iv_len,
borlanic 0:fbdae7e6d805 273 const unsigned char *add,
borlanic 0:fbdae7e6d805 274 size_t add_len )
borlanic 0:fbdae7e6d805 275 {
borlanic 0:fbdae7e6d805 276 int ret;
borlanic 0:fbdae7e6d805 277 unsigned char work_buf[16];
borlanic 0:fbdae7e6d805 278 size_t i;
borlanic 0:fbdae7e6d805 279 const unsigned char *p;
borlanic 0:fbdae7e6d805 280 size_t use_len, olen = 0;
borlanic 0:fbdae7e6d805 281
borlanic 0:fbdae7e6d805 282 /* IV and AD are limited to 2^64 bits, so 2^61 bytes */
borlanic 0:fbdae7e6d805 283 /* IV is not allowed to be zero length */
borlanic 0:fbdae7e6d805 284 if( iv_len == 0 ||
borlanic 0:fbdae7e6d805 285 ( (uint64_t) iv_len ) >> 61 != 0 ||
borlanic 0:fbdae7e6d805 286 ( (uint64_t) add_len ) >> 61 != 0 )
borlanic 0:fbdae7e6d805 287 {
borlanic 0:fbdae7e6d805 288 return( MBEDTLS_ERR_GCM_BAD_INPUT );
borlanic 0:fbdae7e6d805 289 }
borlanic 0:fbdae7e6d805 290
borlanic 0:fbdae7e6d805 291 memset( ctx->y, 0x00, sizeof(ctx->y) );
borlanic 0:fbdae7e6d805 292 memset( ctx->buf, 0x00, sizeof(ctx->buf) );
borlanic 0:fbdae7e6d805 293
borlanic 0:fbdae7e6d805 294 ctx->mode = mode;
borlanic 0:fbdae7e6d805 295 ctx->len = 0;
borlanic 0:fbdae7e6d805 296 ctx->add_len = 0;
borlanic 0:fbdae7e6d805 297
borlanic 0:fbdae7e6d805 298 if( iv_len == 12 )
borlanic 0:fbdae7e6d805 299 {
borlanic 0:fbdae7e6d805 300 memcpy( ctx->y, iv, iv_len );
borlanic 0:fbdae7e6d805 301 ctx->y[15] = 1;
borlanic 0:fbdae7e6d805 302 }
borlanic 0:fbdae7e6d805 303 else
borlanic 0:fbdae7e6d805 304 {
borlanic 0:fbdae7e6d805 305 memset( work_buf, 0x00, 16 );
borlanic 0:fbdae7e6d805 306 PUT_UINT32_BE( iv_len * 8, work_buf, 12 );
borlanic 0:fbdae7e6d805 307
borlanic 0:fbdae7e6d805 308 p = iv;
borlanic 0:fbdae7e6d805 309 while( iv_len > 0 )
borlanic 0:fbdae7e6d805 310 {
borlanic 0:fbdae7e6d805 311 use_len = ( iv_len < 16 ) ? iv_len : 16;
borlanic 0:fbdae7e6d805 312
borlanic 0:fbdae7e6d805 313 for( i = 0; i < use_len; i++ )
borlanic 0:fbdae7e6d805 314 ctx->y[i] ^= p[i];
borlanic 0:fbdae7e6d805 315
borlanic 0:fbdae7e6d805 316 gcm_mult( ctx, ctx->y, ctx->y );
borlanic 0:fbdae7e6d805 317
borlanic 0:fbdae7e6d805 318 iv_len -= use_len;
borlanic 0:fbdae7e6d805 319 p += use_len;
borlanic 0:fbdae7e6d805 320 }
borlanic 0:fbdae7e6d805 321
borlanic 0:fbdae7e6d805 322 for( i = 0; i < 16; i++ )
borlanic 0:fbdae7e6d805 323 ctx->y[i] ^= work_buf[i];
borlanic 0:fbdae7e6d805 324
borlanic 0:fbdae7e6d805 325 gcm_mult( ctx, ctx->y, ctx->y );
borlanic 0:fbdae7e6d805 326 }
borlanic 0:fbdae7e6d805 327
borlanic 0:fbdae7e6d805 328 if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ctx->base_ectr,
borlanic 0:fbdae7e6d805 329 &olen ) ) != 0 )
borlanic 0:fbdae7e6d805 330 {
borlanic 0:fbdae7e6d805 331 return( ret );
borlanic 0:fbdae7e6d805 332 }
borlanic 0:fbdae7e6d805 333
borlanic 0:fbdae7e6d805 334 ctx->add_len = add_len;
borlanic 0:fbdae7e6d805 335 p = add;
borlanic 0:fbdae7e6d805 336 while( add_len > 0 )
borlanic 0:fbdae7e6d805 337 {
borlanic 0:fbdae7e6d805 338 use_len = ( add_len < 16 ) ? add_len : 16;
borlanic 0:fbdae7e6d805 339
borlanic 0:fbdae7e6d805 340 for( i = 0; i < use_len; i++ )
borlanic 0:fbdae7e6d805 341 ctx->buf[i] ^= p[i];
borlanic 0:fbdae7e6d805 342
borlanic 0:fbdae7e6d805 343 gcm_mult( ctx, ctx->buf, ctx->buf );
borlanic 0:fbdae7e6d805 344
borlanic 0:fbdae7e6d805 345 add_len -= use_len;
borlanic 0:fbdae7e6d805 346 p += use_len;
borlanic 0:fbdae7e6d805 347 }
borlanic 0:fbdae7e6d805 348
borlanic 0:fbdae7e6d805 349 return( 0 );
borlanic 0:fbdae7e6d805 350 }
borlanic 0:fbdae7e6d805 351
borlanic 0:fbdae7e6d805 352 int mbedtls_gcm_update( mbedtls_gcm_context *ctx,
borlanic 0:fbdae7e6d805 353 size_t length,
borlanic 0:fbdae7e6d805 354 const unsigned char *input,
borlanic 0:fbdae7e6d805 355 unsigned char *output )
borlanic 0:fbdae7e6d805 356 {
borlanic 0:fbdae7e6d805 357 int ret;
borlanic 0:fbdae7e6d805 358 unsigned char ectr[16];
borlanic 0:fbdae7e6d805 359 size_t i;
borlanic 0:fbdae7e6d805 360 const unsigned char *p;
borlanic 0:fbdae7e6d805 361 unsigned char *out_p = output;
borlanic 0:fbdae7e6d805 362 size_t use_len, olen = 0;
borlanic 0:fbdae7e6d805 363
borlanic 0:fbdae7e6d805 364 if( output > input && (size_t) ( output - input ) < length )
borlanic 0:fbdae7e6d805 365 return( MBEDTLS_ERR_GCM_BAD_INPUT );
borlanic 0:fbdae7e6d805 366
borlanic 0:fbdae7e6d805 367 /* Total length is restricted to 2^39 - 256 bits, ie 2^36 - 2^5 bytes
borlanic 0:fbdae7e6d805 368 * Also check for possible overflow */
borlanic 0:fbdae7e6d805 369 if( ctx->len + length < ctx->len ||
borlanic 0:fbdae7e6d805 370 (uint64_t) ctx->len + length > 0xFFFFFFFE0ull )
borlanic 0:fbdae7e6d805 371 {
borlanic 0:fbdae7e6d805 372 return( MBEDTLS_ERR_GCM_BAD_INPUT );
borlanic 0:fbdae7e6d805 373 }
borlanic 0:fbdae7e6d805 374
borlanic 0:fbdae7e6d805 375 ctx->len += length;
borlanic 0:fbdae7e6d805 376
borlanic 0:fbdae7e6d805 377 p = input;
borlanic 0:fbdae7e6d805 378 while( length > 0 )
borlanic 0:fbdae7e6d805 379 {
borlanic 0:fbdae7e6d805 380 use_len = ( length < 16 ) ? length : 16;
borlanic 0:fbdae7e6d805 381
borlanic 0:fbdae7e6d805 382 for( i = 16; i > 12; i-- )
borlanic 0:fbdae7e6d805 383 if( ++ctx->y[i - 1] != 0 )
borlanic 0:fbdae7e6d805 384 break;
borlanic 0:fbdae7e6d805 385
borlanic 0:fbdae7e6d805 386 if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ectr,
borlanic 0:fbdae7e6d805 387 &olen ) ) != 0 )
borlanic 0:fbdae7e6d805 388 {
borlanic 0:fbdae7e6d805 389 return( ret );
borlanic 0:fbdae7e6d805 390 }
borlanic 0:fbdae7e6d805 391
borlanic 0:fbdae7e6d805 392 for( i = 0; i < use_len; i++ )
borlanic 0:fbdae7e6d805 393 {
borlanic 0:fbdae7e6d805 394 if( ctx->mode == MBEDTLS_GCM_DECRYPT )
borlanic 0:fbdae7e6d805 395 ctx->buf[i] ^= p[i];
borlanic 0:fbdae7e6d805 396 out_p[i] = ectr[i] ^ p[i];
borlanic 0:fbdae7e6d805 397 if( ctx->mode == MBEDTLS_GCM_ENCRYPT )
borlanic 0:fbdae7e6d805 398 ctx->buf[i] ^= out_p[i];
borlanic 0:fbdae7e6d805 399 }
borlanic 0:fbdae7e6d805 400
borlanic 0:fbdae7e6d805 401 gcm_mult( ctx, ctx->buf, ctx->buf );
borlanic 0:fbdae7e6d805 402
borlanic 0:fbdae7e6d805 403 length -= use_len;
borlanic 0:fbdae7e6d805 404 p += use_len;
borlanic 0:fbdae7e6d805 405 out_p += use_len;
borlanic 0:fbdae7e6d805 406 }
borlanic 0:fbdae7e6d805 407
borlanic 0:fbdae7e6d805 408 return( 0 );
borlanic 0:fbdae7e6d805 409 }
borlanic 0:fbdae7e6d805 410
borlanic 0:fbdae7e6d805 411 int mbedtls_gcm_finish( mbedtls_gcm_context *ctx,
borlanic 0:fbdae7e6d805 412 unsigned char *tag,
borlanic 0:fbdae7e6d805 413 size_t tag_len )
borlanic 0:fbdae7e6d805 414 {
borlanic 0:fbdae7e6d805 415 unsigned char work_buf[16];
borlanic 0:fbdae7e6d805 416 size_t i;
borlanic 0:fbdae7e6d805 417 uint64_t orig_len = ctx->len * 8;
borlanic 0:fbdae7e6d805 418 uint64_t orig_add_len = ctx->add_len * 8;
borlanic 0:fbdae7e6d805 419
borlanic 0:fbdae7e6d805 420 if( tag_len > 16 || tag_len < 4 )
borlanic 0:fbdae7e6d805 421 return( MBEDTLS_ERR_GCM_BAD_INPUT );
borlanic 0:fbdae7e6d805 422
borlanic 0:fbdae7e6d805 423 memcpy( tag, ctx->base_ectr, tag_len );
borlanic 0:fbdae7e6d805 424
borlanic 0:fbdae7e6d805 425 if( orig_len || orig_add_len )
borlanic 0:fbdae7e6d805 426 {
borlanic 0:fbdae7e6d805 427 memset( work_buf, 0x00, 16 );
borlanic 0:fbdae7e6d805 428
borlanic 0:fbdae7e6d805 429 PUT_UINT32_BE( ( orig_add_len >> 32 ), work_buf, 0 );
borlanic 0:fbdae7e6d805 430 PUT_UINT32_BE( ( orig_add_len ), work_buf, 4 );
borlanic 0:fbdae7e6d805 431 PUT_UINT32_BE( ( orig_len >> 32 ), work_buf, 8 );
borlanic 0:fbdae7e6d805 432 PUT_UINT32_BE( ( orig_len ), work_buf, 12 );
borlanic 0:fbdae7e6d805 433
borlanic 0:fbdae7e6d805 434 for( i = 0; i < 16; i++ )
borlanic 0:fbdae7e6d805 435 ctx->buf[i] ^= work_buf[i];
borlanic 0:fbdae7e6d805 436
borlanic 0:fbdae7e6d805 437 gcm_mult( ctx, ctx->buf, ctx->buf );
borlanic 0:fbdae7e6d805 438
borlanic 0:fbdae7e6d805 439 for( i = 0; i < tag_len; i++ )
borlanic 0:fbdae7e6d805 440 tag[i] ^= ctx->buf[i];
borlanic 0:fbdae7e6d805 441 }
borlanic 0:fbdae7e6d805 442
borlanic 0:fbdae7e6d805 443 return( 0 );
borlanic 0:fbdae7e6d805 444 }
borlanic 0:fbdae7e6d805 445
borlanic 0:fbdae7e6d805 446 int mbedtls_gcm_crypt_and_tag( mbedtls_gcm_context *ctx,
borlanic 0:fbdae7e6d805 447 int mode,
borlanic 0:fbdae7e6d805 448 size_t length,
borlanic 0:fbdae7e6d805 449 const unsigned char *iv,
borlanic 0:fbdae7e6d805 450 size_t iv_len,
borlanic 0:fbdae7e6d805 451 const unsigned char *add,
borlanic 0:fbdae7e6d805 452 size_t add_len,
borlanic 0:fbdae7e6d805 453 const unsigned char *input,
borlanic 0:fbdae7e6d805 454 unsigned char *output,
borlanic 0:fbdae7e6d805 455 size_t tag_len,
borlanic 0:fbdae7e6d805 456 unsigned char *tag )
borlanic 0:fbdae7e6d805 457 {
borlanic 0:fbdae7e6d805 458 int ret;
borlanic 0:fbdae7e6d805 459
borlanic 0:fbdae7e6d805 460 if( ( ret = mbedtls_gcm_starts( ctx, mode, iv, iv_len, add, add_len ) ) != 0 )
borlanic 0:fbdae7e6d805 461 return( ret );
borlanic 0:fbdae7e6d805 462
borlanic 0:fbdae7e6d805 463 if( ( ret = mbedtls_gcm_update( ctx, length, input, output ) ) != 0 )
borlanic 0:fbdae7e6d805 464 return( ret );
borlanic 0:fbdae7e6d805 465
borlanic 0:fbdae7e6d805 466 if( ( ret = mbedtls_gcm_finish( ctx, tag, tag_len ) ) != 0 )
borlanic 0:fbdae7e6d805 467 return( ret );
borlanic 0:fbdae7e6d805 468
borlanic 0:fbdae7e6d805 469 return( 0 );
borlanic 0:fbdae7e6d805 470 }
borlanic 0:fbdae7e6d805 471
borlanic 0:fbdae7e6d805 472 int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx,
borlanic 0:fbdae7e6d805 473 size_t length,
borlanic 0:fbdae7e6d805 474 const unsigned char *iv,
borlanic 0:fbdae7e6d805 475 size_t iv_len,
borlanic 0:fbdae7e6d805 476 const unsigned char *add,
borlanic 0:fbdae7e6d805 477 size_t add_len,
borlanic 0:fbdae7e6d805 478 const unsigned char *tag,
borlanic 0:fbdae7e6d805 479 size_t tag_len,
borlanic 0:fbdae7e6d805 480 const unsigned char *input,
borlanic 0:fbdae7e6d805 481 unsigned char *output )
borlanic 0:fbdae7e6d805 482 {
borlanic 0:fbdae7e6d805 483 int ret;
borlanic 0:fbdae7e6d805 484 unsigned char check_tag[16];
borlanic 0:fbdae7e6d805 485 size_t i;
borlanic 0:fbdae7e6d805 486 int diff;
borlanic 0:fbdae7e6d805 487
borlanic 0:fbdae7e6d805 488 if( ( ret = mbedtls_gcm_crypt_and_tag( ctx, MBEDTLS_GCM_DECRYPT, length,
borlanic 0:fbdae7e6d805 489 iv, iv_len, add, add_len,
borlanic 0:fbdae7e6d805 490 input, output, tag_len, check_tag ) ) != 0 )
borlanic 0:fbdae7e6d805 491 {
borlanic 0:fbdae7e6d805 492 return( ret );
borlanic 0:fbdae7e6d805 493 }
borlanic 0:fbdae7e6d805 494
borlanic 0:fbdae7e6d805 495 /* Check tag in "constant-time" */
borlanic 0:fbdae7e6d805 496 for( diff = 0, i = 0; i < tag_len; i++ )
borlanic 0:fbdae7e6d805 497 diff |= tag[i] ^ check_tag[i];
borlanic 0:fbdae7e6d805 498
borlanic 0:fbdae7e6d805 499 if( diff != 0 )
borlanic 0:fbdae7e6d805 500 {
borlanic 0:fbdae7e6d805 501 mbedtls_zeroize( output, length );
borlanic 0:fbdae7e6d805 502 return( MBEDTLS_ERR_GCM_AUTH_FAILED );
borlanic 0:fbdae7e6d805 503 }
borlanic 0:fbdae7e6d805 504
borlanic 0:fbdae7e6d805 505 return( 0 );
borlanic 0:fbdae7e6d805 506 }
borlanic 0:fbdae7e6d805 507
borlanic 0:fbdae7e6d805 508 void mbedtls_gcm_free( mbedtls_gcm_context *ctx )
borlanic 0:fbdae7e6d805 509 {
borlanic 0:fbdae7e6d805 510 mbedtls_cipher_free( &ctx->cipher_ctx );
borlanic 0:fbdae7e6d805 511 mbedtls_zeroize( ctx, sizeof( mbedtls_gcm_context ) );
borlanic 0:fbdae7e6d805 512 }
borlanic 0:fbdae7e6d805 513
borlanic 0:fbdae7e6d805 514 #endif /* !MBEDTLS_GCM_ALT */
borlanic 0:fbdae7e6d805 515
borlanic 0:fbdae7e6d805 516 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
borlanic 0:fbdae7e6d805 517 /*
borlanic 0:fbdae7e6d805 518 * AES-GCM test vectors from:
borlanic 0:fbdae7e6d805 519 *
borlanic 0:fbdae7e6d805 520 * http://csrc.nist.gov/groups/STM/cavp/documents/mac/gcmtestvectors.zip
borlanic 0:fbdae7e6d805 521 */
borlanic 0:fbdae7e6d805 522 #define MAX_TESTS 6
borlanic 0:fbdae7e6d805 523
borlanic 0:fbdae7e6d805 524 static const int key_index[MAX_TESTS] =
borlanic 0:fbdae7e6d805 525 { 0, 0, 1, 1, 1, 1 };
borlanic 0:fbdae7e6d805 526
borlanic 0:fbdae7e6d805 527 static const unsigned char key[MAX_TESTS][32] =
borlanic 0:fbdae7e6d805 528 {
borlanic 0:fbdae7e6d805 529 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
borlanic 0:fbdae7e6d805 530 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
borlanic 0:fbdae7e6d805 531 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
borlanic 0:fbdae7e6d805 532 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
borlanic 0:fbdae7e6d805 533 { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
borlanic 0:fbdae7e6d805 534 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
borlanic 0:fbdae7e6d805 535 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
borlanic 0:fbdae7e6d805 536 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08 },
borlanic 0:fbdae7e6d805 537 };
borlanic 0:fbdae7e6d805 538
borlanic 0:fbdae7e6d805 539 static const size_t iv_len[MAX_TESTS] =
borlanic 0:fbdae7e6d805 540 { 12, 12, 12, 12, 8, 60 };
borlanic 0:fbdae7e6d805 541
borlanic 0:fbdae7e6d805 542 static const int iv_index[MAX_TESTS] =
borlanic 0:fbdae7e6d805 543 { 0, 0, 1, 1, 1, 2 };
borlanic 0:fbdae7e6d805 544
borlanic 0:fbdae7e6d805 545 static const unsigned char iv[MAX_TESTS][64] =
borlanic 0:fbdae7e6d805 546 {
borlanic 0:fbdae7e6d805 547 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
borlanic 0:fbdae7e6d805 548 0x00, 0x00, 0x00, 0x00 },
borlanic 0:fbdae7e6d805 549 { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
borlanic 0:fbdae7e6d805 550 0xde, 0xca, 0xf8, 0x88 },
borlanic 0:fbdae7e6d805 551 { 0x93, 0x13, 0x22, 0x5d, 0xf8, 0x84, 0x06, 0xe5,
borlanic 0:fbdae7e6d805 552 0x55, 0x90, 0x9c, 0x5a, 0xff, 0x52, 0x69, 0xaa,
borlanic 0:fbdae7e6d805 553 0x6a, 0x7a, 0x95, 0x38, 0x53, 0x4f, 0x7d, 0xa1,
borlanic 0:fbdae7e6d805 554 0xe4, 0xc3, 0x03, 0xd2, 0xa3, 0x18, 0xa7, 0x28,
borlanic 0:fbdae7e6d805 555 0xc3, 0xc0, 0xc9, 0x51, 0x56, 0x80, 0x95, 0x39,
borlanic 0:fbdae7e6d805 556 0xfc, 0xf0, 0xe2, 0x42, 0x9a, 0x6b, 0x52, 0x54,
borlanic 0:fbdae7e6d805 557 0x16, 0xae, 0xdb, 0xf5, 0xa0, 0xde, 0x6a, 0x57,
borlanic 0:fbdae7e6d805 558 0xa6, 0x37, 0xb3, 0x9b },
borlanic 0:fbdae7e6d805 559 };
borlanic 0:fbdae7e6d805 560
borlanic 0:fbdae7e6d805 561 static const size_t add_len[MAX_TESTS] =
borlanic 0:fbdae7e6d805 562 { 0, 0, 0, 20, 20, 20 };
borlanic 0:fbdae7e6d805 563
borlanic 0:fbdae7e6d805 564 static const int add_index[MAX_TESTS] =
borlanic 0:fbdae7e6d805 565 { 0, 0, 0, 1, 1, 1 };
borlanic 0:fbdae7e6d805 566
borlanic 0:fbdae7e6d805 567 static const unsigned char additional[MAX_TESTS][64] =
borlanic 0:fbdae7e6d805 568 {
borlanic 0:fbdae7e6d805 569 { 0x00 },
borlanic 0:fbdae7e6d805 570 { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
borlanic 0:fbdae7e6d805 571 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
borlanic 0:fbdae7e6d805 572 0xab, 0xad, 0xda, 0xd2 },
borlanic 0:fbdae7e6d805 573 };
borlanic 0:fbdae7e6d805 574
borlanic 0:fbdae7e6d805 575 static const size_t pt_len[MAX_TESTS] =
borlanic 0:fbdae7e6d805 576 { 0, 16, 64, 60, 60, 60 };
borlanic 0:fbdae7e6d805 577
borlanic 0:fbdae7e6d805 578 static const int pt_index[MAX_TESTS] =
borlanic 0:fbdae7e6d805 579 { 0, 0, 1, 1, 1, 1 };
borlanic 0:fbdae7e6d805 580
borlanic 0:fbdae7e6d805 581 static const unsigned char pt[MAX_TESTS][64] =
borlanic 0:fbdae7e6d805 582 {
borlanic 0:fbdae7e6d805 583 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
borlanic 0:fbdae7e6d805 584 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
borlanic 0:fbdae7e6d805 585 { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
borlanic 0:fbdae7e6d805 586 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
borlanic 0:fbdae7e6d805 587 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
borlanic 0:fbdae7e6d805 588 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
borlanic 0:fbdae7e6d805 589 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
borlanic 0:fbdae7e6d805 590 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
borlanic 0:fbdae7e6d805 591 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
borlanic 0:fbdae7e6d805 592 0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55 },
borlanic 0:fbdae7e6d805 593 };
borlanic 0:fbdae7e6d805 594
borlanic 0:fbdae7e6d805 595 static const unsigned char ct[MAX_TESTS * 3][64] =
borlanic 0:fbdae7e6d805 596 {
borlanic 0:fbdae7e6d805 597 { 0x00 },
borlanic 0:fbdae7e6d805 598 { 0x03, 0x88, 0xda, 0xce, 0x60, 0xb6, 0xa3, 0x92,
borlanic 0:fbdae7e6d805 599 0xf3, 0x28, 0xc2, 0xb9, 0x71, 0xb2, 0xfe, 0x78 },
borlanic 0:fbdae7e6d805 600 { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
borlanic 0:fbdae7e6d805 601 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
borlanic 0:fbdae7e6d805 602 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
borlanic 0:fbdae7e6d805 603 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
borlanic 0:fbdae7e6d805 604 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
borlanic 0:fbdae7e6d805 605 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
borlanic 0:fbdae7e6d805 606 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
borlanic 0:fbdae7e6d805 607 0x3d, 0x58, 0xe0, 0x91, 0x47, 0x3f, 0x59, 0x85 },
borlanic 0:fbdae7e6d805 608 { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
borlanic 0:fbdae7e6d805 609 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
borlanic 0:fbdae7e6d805 610 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
borlanic 0:fbdae7e6d805 611 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
borlanic 0:fbdae7e6d805 612 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
borlanic 0:fbdae7e6d805 613 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
borlanic 0:fbdae7e6d805 614 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
borlanic 0:fbdae7e6d805 615 0x3d, 0x58, 0xe0, 0x91 },
borlanic 0:fbdae7e6d805 616 { 0x61, 0x35, 0x3b, 0x4c, 0x28, 0x06, 0x93, 0x4a,
borlanic 0:fbdae7e6d805 617 0x77, 0x7f, 0xf5, 0x1f, 0xa2, 0x2a, 0x47, 0x55,
borlanic 0:fbdae7e6d805 618 0x69, 0x9b, 0x2a, 0x71, 0x4f, 0xcd, 0xc6, 0xf8,
borlanic 0:fbdae7e6d805 619 0x37, 0x66, 0xe5, 0xf9, 0x7b, 0x6c, 0x74, 0x23,
borlanic 0:fbdae7e6d805 620 0x73, 0x80, 0x69, 0x00, 0xe4, 0x9f, 0x24, 0xb2,
borlanic 0:fbdae7e6d805 621 0x2b, 0x09, 0x75, 0x44, 0xd4, 0x89, 0x6b, 0x42,
borlanic 0:fbdae7e6d805 622 0x49, 0x89, 0xb5, 0xe1, 0xeb, 0xac, 0x0f, 0x07,
borlanic 0:fbdae7e6d805 623 0xc2, 0x3f, 0x45, 0x98 },
borlanic 0:fbdae7e6d805 624 { 0x8c, 0xe2, 0x49, 0x98, 0x62, 0x56, 0x15, 0xb6,
borlanic 0:fbdae7e6d805 625 0x03, 0xa0, 0x33, 0xac, 0xa1, 0x3f, 0xb8, 0x94,
borlanic 0:fbdae7e6d805 626 0xbe, 0x91, 0x12, 0xa5, 0xc3, 0xa2, 0x11, 0xa8,
borlanic 0:fbdae7e6d805 627 0xba, 0x26, 0x2a, 0x3c, 0xca, 0x7e, 0x2c, 0xa7,
borlanic 0:fbdae7e6d805 628 0x01, 0xe4, 0xa9, 0xa4, 0xfb, 0xa4, 0x3c, 0x90,
borlanic 0:fbdae7e6d805 629 0xcc, 0xdc, 0xb2, 0x81, 0xd4, 0x8c, 0x7c, 0x6f,
borlanic 0:fbdae7e6d805 630 0xd6, 0x28, 0x75, 0xd2, 0xac, 0xa4, 0x17, 0x03,
borlanic 0:fbdae7e6d805 631 0x4c, 0x34, 0xae, 0xe5 },
borlanic 0:fbdae7e6d805 632 { 0x00 },
borlanic 0:fbdae7e6d805 633 { 0x98, 0xe7, 0x24, 0x7c, 0x07, 0xf0, 0xfe, 0x41,
borlanic 0:fbdae7e6d805 634 0x1c, 0x26, 0x7e, 0x43, 0x84, 0xb0, 0xf6, 0x00 },
borlanic 0:fbdae7e6d805 635 { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
borlanic 0:fbdae7e6d805 636 0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
borlanic 0:fbdae7e6d805 637 0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
borlanic 0:fbdae7e6d805 638 0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
borlanic 0:fbdae7e6d805 639 0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
borlanic 0:fbdae7e6d805 640 0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
borlanic 0:fbdae7e6d805 641 0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
borlanic 0:fbdae7e6d805 642 0xcc, 0xda, 0x27, 0x10, 0xac, 0xad, 0xe2, 0x56 },
borlanic 0:fbdae7e6d805 643 { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
borlanic 0:fbdae7e6d805 644 0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
borlanic 0:fbdae7e6d805 645 0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
borlanic 0:fbdae7e6d805 646 0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
borlanic 0:fbdae7e6d805 647 0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
borlanic 0:fbdae7e6d805 648 0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
borlanic 0:fbdae7e6d805 649 0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
borlanic 0:fbdae7e6d805 650 0xcc, 0xda, 0x27, 0x10 },
borlanic 0:fbdae7e6d805 651 { 0x0f, 0x10, 0xf5, 0x99, 0xae, 0x14, 0xa1, 0x54,
borlanic 0:fbdae7e6d805 652 0xed, 0x24, 0xb3, 0x6e, 0x25, 0x32, 0x4d, 0xb8,
borlanic 0:fbdae7e6d805 653 0xc5, 0x66, 0x63, 0x2e, 0xf2, 0xbb, 0xb3, 0x4f,
borlanic 0:fbdae7e6d805 654 0x83, 0x47, 0x28, 0x0f, 0xc4, 0x50, 0x70, 0x57,
borlanic 0:fbdae7e6d805 655 0xfd, 0xdc, 0x29, 0xdf, 0x9a, 0x47, 0x1f, 0x75,
borlanic 0:fbdae7e6d805 656 0xc6, 0x65, 0x41, 0xd4, 0xd4, 0xda, 0xd1, 0xc9,
borlanic 0:fbdae7e6d805 657 0xe9, 0x3a, 0x19, 0xa5, 0x8e, 0x8b, 0x47, 0x3f,
borlanic 0:fbdae7e6d805 658 0xa0, 0xf0, 0x62, 0xf7 },
borlanic 0:fbdae7e6d805 659 { 0xd2, 0x7e, 0x88, 0x68, 0x1c, 0xe3, 0x24, 0x3c,
borlanic 0:fbdae7e6d805 660 0x48, 0x30, 0x16, 0x5a, 0x8f, 0xdc, 0xf9, 0xff,
borlanic 0:fbdae7e6d805 661 0x1d, 0xe9, 0xa1, 0xd8, 0xe6, 0xb4, 0x47, 0xef,
borlanic 0:fbdae7e6d805 662 0x6e, 0xf7, 0xb7, 0x98, 0x28, 0x66, 0x6e, 0x45,
borlanic 0:fbdae7e6d805 663 0x81, 0xe7, 0x90, 0x12, 0xaf, 0x34, 0xdd, 0xd9,
borlanic 0:fbdae7e6d805 664 0xe2, 0xf0, 0x37, 0x58, 0x9b, 0x29, 0x2d, 0xb3,
borlanic 0:fbdae7e6d805 665 0xe6, 0x7c, 0x03, 0x67, 0x45, 0xfa, 0x22, 0xe7,
borlanic 0:fbdae7e6d805 666 0xe9, 0xb7, 0x37, 0x3b },
borlanic 0:fbdae7e6d805 667 { 0x00 },
borlanic 0:fbdae7e6d805 668 { 0xce, 0xa7, 0x40, 0x3d, 0x4d, 0x60, 0x6b, 0x6e,
borlanic 0:fbdae7e6d805 669 0x07, 0x4e, 0xc5, 0xd3, 0xba, 0xf3, 0x9d, 0x18 },
borlanic 0:fbdae7e6d805 670 { 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,
borlanic 0:fbdae7e6d805 671 0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,
borlanic 0:fbdae7e6d805 672 0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,
borlanic 0:fbdae7e6d805 673 0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,
borlanic 0:fbdae7e6d805 674 0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,
borlanic 0:fbdae7e6d805 675 0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,
borlanic 0:fbdae7e6d805 676 0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,
borlanic 0:fbdae7e6d805 677 0xbc, 0xc9, 0xf6, 0x62, 0x89, 0x80, 0x15, 0xad },
borlanic 0:fbdae7e6d805 678 { 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,
borlanic 0:fbdae7e6d805 679 0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,
borlanic 0:fbdae7e6d805 680 0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,
borlanic 0:fbdae7e6d805 681 0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,
borlanic 0:fbdae7e6d805 682 0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,
borlanic 0:fbdae7e6d805 683 0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,
borlanic 0:fbdae7e6d805 684 0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,
borlanic 0:fbdae7e6d805 685 0xbc, 0xc9, 0xf6, 0x62 },
borlanic 0:fbdae7e6d805 686 { 0xc3, 0x76, 0x2d, 0xf1, 0xca, 0x78, 0x7d, 0x32,
borlanic 0:fbdae7e6d805 687 0xae, 0x47, 0xc1, 0x3b, 0xf1, 0x98, 0x44, 0xcb,
borlanic 0:fbdae7e6d805 688 0xaf, 0x1a, 0xe1, 0x4d, 0x0b, 0x97, 0x6a, 0xfa,
borlanic 0:fbdae7e6d805 689 0xc5, 0x2f, 0xf7, 0xd7, 0x9b, 0xba, 0x9d, 0xe0,
borlanic 0:fbdae7e6d805 690 0xfe, 0xb5, 0x82, 0xd3, 0x39, 0x34, 0xa4, 0xf0,
borlanic 0:fbdae7e6d805 691 0x95, 0x4c, 0xc2, 0x36, 0x3b, 0xc7, 0x3f, 0x78,
borlanic 0:fbdae7e6d805 692 0x62, 0xac, 0x43, 0x0e, 0x64, 0xab, 0xe4, 0x99,
borlanic 0:fbdae7e6d805 693 0xf4, 0x7c, 0x9b, 0x1f },
borlanic 0:fbdae7e6d805 694 { 0x5a, 0x8d, 0xef, 0x2f, 0x0c, 0x9e, 0x53, 0xf1,
borlanic 0:fbdae7e6d805 695 0xf7, 0x5d, 0x78, 0x53, 0x65, 0x9e, 0x2a, 0x20,
borlanic 0:fbdae7e6d805 696 0xee, 0xb2, 0xb2, 0x2a, 0xaf, 0xde, 0x64, 0x19,
borlanic 0:fbdae7e6d805 697 0xa0, 0x58, 0xab, 0x4f, 0x6f, 0x74, 0x6b, 0xf4,
borlanic 0:fbdae7e6d805 698 0x0f, 0xc0, 0xc3, 0xb7, 0x80, 0xf2, 0x44, 0x45,
borlanic 0:fbdae7e6d805 699 0x2d, 0xa3, 0xeb, 0xf1, 0xc5, 0xd8, 0x2c, 0xde,
borlanic 0:fbdae7e6d805 700 0xa2, 0x41, 0x89, 0x97, 0x20, 0x0e, 0xf8, 0x2e,
borlanic 0:fbdae7e6d805 701 0x44, 0xae, 0x7e, 0x3f },
borlanic 0:fbdae7e6d805 702 };
borlanic 0:fbdae7e6d805 703
borlanic 0:fbdae7e6d805 704 static const unsigned char tag[MAX_TESTS * 3][16] =
borlanic 0:fbdae7e6d805 705 {
borlanic 0:fbdae7e6d805 706 { 0x58, 0xe2, 0xfc, 0xce, 0xfa, 0x7e, 0x30, 0x61,
borlanic 0:fbdae7e6d805 707 0x36, 0x7f, 0x1d, 0x57, 0xa4, 0xe7, 0x45, 0x5a },
borlanic 0:fbdae7e6d805 708 { 0xab, 0x6e, 0x47, 0xd4, 0x2c, 0xec, 0x13, 0xbd,
borlanic 0:fbdae7e6d805 709 0xf5, 0x3a, 0x67, 0xb2, 0x12, 0x57, 0xbd, 0xdf },
borlanic 0:fbdae7e6d805 710 { 0x4d, 0x5c, 0x2a, 0xf3, 0x27, 0xcd, 0x64, 0xa6,
borlanic 0:fbdae7e6d805 711 0x2c, 0xf3, 0x5a, 0xbd, 0x2b, 0xa6, 0xfa, 0xb4 },
borlanic 0:fbdae7e6d805 712 { 0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,
borlanic 0:fbdae7e6d805 713 0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47 },
borlanic 0:fbdae7e6d805 714 { 0x36, 0x12, 0xd2, 0xe7, 0x9e, 0x3b, 0x07, 0x85,
borlanic 0:fbdae7e6d805 715 0x56, 0x1b, 0xe1, 0x4a, 0xac, 0xa2, 0xfc, 0xcb },
borlanic 0:fbdae7e6d805 716 { 0x61, 0x9c, 0xc5, 0xae, 0xff, 0xfe, 0x0b, 0xfa,
borlanic 0:fbdae7e6d805 717 0x46, 0x2a, 0xf4, 0x3c, 0x16, 0x99, 0xd0, 0x50 },
borlanic 0:fbdae7e6d805 718 { 0xcd, 0x33, 0xb2, 0x8a, 0xc7, 0x73, 0xf7, 0x4b,
borlanic 0:fbdae7e6d805 719 0xa0, 0x0e, 0xd1, 0xf3, 0x12, 0x57, 0x24, 0x35 },
borlanic 0:fbdae7e6d805 720 { 0x2f, 0xf5, 0x8d, 0x80, 0x03, 0x39, 0x27, 0xab,
borlanic 0:fbdae7e6d805 721 0x8e, 0xf4, 0xd4, 0x58, 0x75, 0x14, 0xf0, 0xfb },
borlanic 0:fbdae7e6d805 722 { 0x99, 0x24, 0xa7, 0xc8, 0x58, 0x73, 0x36, 0xbf,
borlanic 0:fbdae7e6d805 723 0xb1, 0x18, 0x02, 0x4d, 0xb8, 0x67, 0x4a, 0x14 },
borlanic 0:fbdae7e6d805 724 { 0x25, 0x19, 0x49, 0x8e, 0x80, 0xf1, 0x47, 0x8f,
borlanic 0:fbdae7e6d805 725 0x37, 0xba, 0x55, 0xbd, 0x6d, 0x27, 0x61, 0x8c },
borlanic 0:fbdae7e6d805 726 { 0x65, 0xdc, 0xc5, 0x7f, 0xcf, 0x62, 0x3a, 0x24,
borlanic 0:fbdae7e6d805 727 0x09, 0x4f, 0xcc, 0xa4, 0x0d, 0x35, 0x33, 0xf8 },
borlanic 0:fbdae7e6d805 728 { 0xdc, 0xf5, 0x66, 0xff, 0x29, 0x1c, 0x25, 0xbb,
borlanic 0:fbdae7e6d805 729 0xb8, 0x56, 0x8f, 0xc3, 0xd3, 0x76, 0xa6, 0xd9 },
borlanic 0:fbdae7e6d805 730 { 0x53, 0x0f, 0x8a, 0xfb, 0xc7, 0x45, 0x36, 0xb9,
borlanic 0:fbdae7e6d805 731 0xa9, 0x63, 0xb4, 0xf1, 0xc4, 0xcb, 0x73, 0x8b },
borlanic 0:fbdae7e6d805 732 { 0xd0, 0xd1, 0xc8, 0xa7, 0x99, 0x99, 0x6b, 0xf0,
borlanic 0:fbdae7e6d805 733 0x26, 0x5b, 0x98, 0xb5, 0xd4, 0x8a, 0xb9, 0x19 },
borlanic 0:fbdae7e6d805 734 { 0xb0, 0x94, 0xda, 0xc5, 0xd9, 0x34, 0x71, 0xbd,
borlanic 0:fbdae7e6d805 735 0xec, 0x1a, 0x50, 0x22, 0x70, 0xe3, 0xcc, 0x6c },
borlanic 0:fbdae7e6d805 736 { 0x76, 0xfc, 0x6e, 0xce, 0x0f, 0x4e, 0x17, 0x68,
borlanic 0:fbdae7e6d805 737 0xcd, 0xdf, 0x88, 0x53, 0xbb, 0x2d, 0x55, 0x1b },
borlanic 0:fbdae7e6d805 738 { 0x3a, 0x33, 0x7d, 0xbf, 0x46, 0xa7, 0x92, 0xc4,
borlanic 0:fbdae7e6d805 739 0x5e, 0x45, 0x49, 0x13, 0xfe, 0x2e, 0xa8, 0xf2 },
borlanic 0:fbdae7e6d805 740 { 0xa4, 0x4a, 0x82, 0x66, 0xee, 0x1c, 0x8e, 0xb0,
borlanic 0:fbdae7e6d805 741 0xc8, 0xb5, 0xd4, 0xcf, 0x5a, 0xe9, 0xf1, 0x9a },
borlanic 0:fbdae7e6d805 742 };
borlanic 0:fbdae7e6d805 743
borlanic 0:fbdae7e6d805 744 int mbedtls_gcm_self_test( int verbose )
borlanic 0:fbdae7e6d805 745 {
borlanic 0:fbdae7e6d805 746 mbedtls_gcm_context ctx;
borlanic 0:fbdae7e6d805 747 unsigned char buf[64];
borlanic 0:fbdae7e6d805 748 unsigned char tag_buf[16];
borlanic 0:fbdae7e6d805 749 int i, j, ret;
borlanic 0:fbdae7e6d805 750 mbedtls_cipher_id_t cipher = MBEDTLS_CIPHER_ID_AES;
borlanic 0:fbdae7e6d805 751
borlanic 0:fbdae7e6d805 752 for( j = 0; j < 3; j++ )
borlanic 0:fbdae7e6d805 753 {
borlanic 0:fbdae7e6d805 754 int key_len = 128 + 64 * j;
borlanic 0:fbdae7e6d805 755
borlanic 0:fbdae7e6d805 756 for( i = 0; i < MAX_TESTS; i++ )
borlanic 0:fbdae7e6d805 757 {
borlanic 0:fbdae7e6d805 758 mbedtls_gcm_init( &ctx );
borlanic 0:fbdae7e6d805 759
borlanic 0:fbdae7e6d805 760 if( verbose != 0 )
borlanic 0:fbdae7e6d805 761 mbedtls_printf( " AES-GCM-%3d #%d (%s): ",
borlanic 0:fbdae7e6d805 762 key_len, i, "enc" );
borlanic 0:fbdae7e6d805 763
borlanic 0:fbdae7e6d805 764 ret = mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]],
borlanic 0:fbdae7e6d805 765 key_len );
borlanic 0:fbdae7e6d805 766 /*
borlanic 0:fbdae7e6d805 767 * AES-192 is an optional feature that may be unavailable when
borlanic 0:fbdae7e6d805 768 * there is an alternative underlying implementation i.e. when
borlanic 0:fbdae7e6d805 769 * MBEDTLS_AES_ALT is defined.
borlanic 0:fbdae7e6d805 770 */
borlanic 0:fbdae7e6d805 771 if( ret == MBEDTLS_ERR_AES_FEATURE_UNAVAILABLE && key_len == 192 )
borlanic 0:fbdae7e6d805 772 {
borlanic 0:fbdae7e6d805 773 mbedtls_printf( "skipped\n" );
borlanic 0:fbdae7e6d805 774 break;
borlanic 0:fbdae7e6d805 775 }
borlanic 0:fbdae7e6d805 776 else if( ret != 0 )
borlanic 0:fbdae7e6d805 777 {
borlanic 0:fbdae7e6d805 778 goto exit;
borlanic 0:fbdae7e6d805 779 }
borlanic 0:fbdae7e6d805 780
borlanic 0:fbdae7e6d805 781 ret = mbedtls_gcm_crypt_and_tag( &ctx, MBEDTLS_GCM_ENCRYPT,
borlanic 0:fbdae7e6d805 782 pt_len[i],
borlanic 0:fbdae7e6d805 783 iv[iv_index[i]], iv_len[i],
borlanic 0:fbdae7e6d805 784 additional[add_index[i]], add_len[i],
borlanic 0:fbdae7e6d805 785 pt[pt_index[i]], buf, 16, tag_buf );
borlanic 0:fbdae7e6d805 786 if( ret != 0 )
borlanic 0:fbdae7e6d805 787 goto exit;
borlanic 0:fbdae7e6d805 788
borlanic 0:fbdae7e6d805 789 if ( memcmp( buf, ct[j * 6 + i], pt_len[i] ) != 0 ||
borlanic 0:fbdae7e6d805 790 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
borlanic 0:fbdae7e6d805 791 {
borlanic 0:fbdae7e6d805 792 ret = 1;
borlanic 0:fbdae7e6d805 793 goto exit;
borlanic 0:fbdae7e6d805 794 }
borlanic 0:fbdae7e6d805 795
borlanic 0:fbdae7e6d805 796 mbedtls_gcm_free( &ctx );
borlanic 0:fbdae7e6d805 797
borlanic 0:fbdae7e6d805 798 if( verbose != 0 )
borlanic 0:fbdae7e6d805 799 mbedtls_printf( "passed\n" );
borlanic 0:fbdae7e6d805 800
borlanic 0:fbdae7e6d805 801 mbedtls_gcm_init( &ctx );
borlanic 0:fbdae7e6d805 802
borlanic 0:fbdae7e6d805 803 if( verbose != 0 )
borlanic 0:fbdae7e6d805 804 mbedtls_printf( " AES-GCM-%3d #%d (%s): ",
borlanic 0:fbdae7e6d805 805 key_len, i, "dec" );
borlanic 0:fbdae7e6d805 806
borlanic 0:fbdae7e6d805 807 ret = mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]],
borlanic 0:fbdae7e6d805 808 key_len );
borlanic 0:fbdae7e6d805 809 if( ret != 0 )
borlanic 0:fbdae7e6d805 810 goto exit;
borlanic 0:fbdae7e6d805 811
borlanic 0:fbdae7e6d805 812 ret = mbedtls_gcm_crypt_and_tag( &ctx, MBEDTLS_GCM_DECRYPT,
borlanic 0:fbdae7e6d805 813 pt_len[i],
borlanic 0:fbdae7e6d805 814 iv[iv_index[i]], iv_len[i],
borlanic 0:fbdae7e6d805 815 additional[add_index[i]], add_len[i],
borlanic 0:fbdae7e6d805 816 ct[j * 6 + i], buf, 16, tag_buf );
borlanic 0:fbdae7e6d805 817
borlanic 0:fbdae7e6d805 818 if( ret != 0 )
borlanic 0:fbdae7e6d805 819 goto exit;
borlanic 0:fbdae7e6d805 820
borlanic 0:fbdae7e6d805 821 if( memcmp( buf, pt[pt_index[i]], pt_len[i] ) != 0 ||
borlanic 0:fbdae7e6d805 822 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
borlanic 0:fbdae7e6d805 823 {
borlanic 0:fbdae7e6d805 824 ret = 1;
borlanic 0:fbdae7e6d805 825 goto exit;
borlanic 0:fbdae7e6d805 826 }
borlanic 0:fbdae7e6d805 827
borlanic 0:fbdae7e6d805 828 mbedtls_gcm_free( &ctx );
borlanic 0:fbdae7e6d805 829
borlanic 0:fbdae7e6d805 830 if( verbose != 0 )
borlanic 0:fbdae7e6d805 831 mbedtls_printf( "passed\n" );
borlanic 0:fbdae7e6d805 832
borlanic 0:fbdae7e6d805 833 mbedtls_gcm_init( &ctx );
borlanic 0:fbdae7e6d805 834
borlanic 0:fbdae7e6d805 835 if( verbose != 0 )
borlanic 0:fbdae7e6d805 836 mbedtls_printf( " AES-GCM-%3d #%d split (%s): ",
borlanic 0:fbdae7e6d805 837 key_len, i, "enc" );
borlanic 0:fbdae7e6d805 838
borlanic 0:fbdae7e6d805 839 ret = mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]],
borlanic 0:fbdae7e6d805 840 key_len );
borlanic 0:fbdae7e6d805 841 if( ret != 0 )
borlanic 0:fbdae7e6d805 842 goto exit;
borlanic 0:fbdae7e6d805 843
borlanic 0:fbdae7e6d805 844 ret = mbedtls_gcm_starts( &ctx, MBEDTLS_GCM_ENCRYPT,
borlanic 0:fbdae7e6d805 845 iv[iv_index[i]], iv_len[i],
borlanic 0:fbdae7e6d805 846 additional[add_index[i]], add_len[i] );
borlanic 0:fbdae7e6d805 847 if( ret != 0 )
borlanic 0:fbdae7e6d805 848 goto exit;
borlanic 0:fbdae7e6d805 849
borlanic 0:fbdae7e6d805 850 if( pt_len[i] > 32 )
borlanic 0:fbdae7e6d805 851 {
borlanic 0:fbdae7e6d805 852 size_t rest_len = pt_len[i] - 32;
borlanic 0:fbdae7e6d805 853 ret = mbedtls_gcm_update( &ctx, 32, pt[pt_index[i]], buf );
borlanic 0:fbdae7e6d805 854 if( ret != 0 )
borlanic 0:fbdae7e6d805 855 goto exit;
borlanic 0:fbdae7e6d805 856
borlanic 0:fbdae7e6d805 857 ret = mbedtls_gcm_update( &ctx, rest_len, pt[pt_index[i]] + 32,
borlanic 0:fbdae7e6d805 858 buf + 32 );
borlanic 0:fbdae7e6d805 859 if( ret != 0 )
borlanic 0:fbdae7e6d805 860 goto exit;
borlanic 0:fbdae7e6d805 861 }
borlanic 0:fbdae7e6d805 862 else
borlanic 0:fbdae7e6d805 863 {
borlanic 0:fbdae7e6d805 864 ret = mbedtls_gcm_update( &ctx, pt_len[i], pt[pt_index[i]], buf );
borlanic 0:fbdae7e6d805 865 if( ret != 0 )
borlanic 0:fbdae7e6d805 866 goto exit;
borlanic 0:fbdae7e6d805 867 }
borlanic 0:fbdae7e6d805 868
borlanic 0:fbdae7e6d805 869 ret = mbedtls_gcm_finish( &ctx, tag_buf, 16 );
borlanic 0:fbdae7e6d805 870 if( ret != 0 )
borlanic 0:fbdae7e6d805 871 goto exit;
borlanic 0:fbdae7e6d805 872
borlanic 0:fbdae7e6d805 873 if( memcmp( buf, ct[j * 6 + i], pt_len[i] ) != 0 ||
borlanic 0:fbdae7e6d805 874 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
borlanic 0:fbdae7e6d805 875 {
borlanic 0:fbdae7e6d805 876 ret = 1;
borlanic 0:fbdae7e6d805 877 goto exit;
borlanic 0:fbdae7e6d805 878 }
borlanic 0:fbdae7e6d805 879
borlanic 0:fbdae7e6d805 880 mbedtls_gcm_free( &ctx );
borlanic 0:fbdae7e6d805 881
borlanic 0:fbdae7e6d805 882 if( verbose != 0 )
borlanic 0:fbdae7e6d805 883 mbedtls_printf( "passed\n" );
borlanic 0:fbdae7e6d805 884
borlanic 0:fbdae7e6d805 885 mbedtls_gcm_init( &ctx );
borlanic 0:fbdae7e6d805 886
borlanic 0:fbdae7e6d805 887 if( verbose != 0 )
borlanic 0:fbdae7e6d805 888 mbedtls_printf( " AES-GCM-%3d #%d split (%s): ",
borlanic 0:fbdae7e6d805 889 key_len, i, "dec" );
borlanic 0:fbdae7e6d805 890
borlanic 0:fbdae7e6d805 891 ret = mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]],
borlanic 0:fbdae7e6d805 892 key_len );
borlanic 0:fbdae7e6d805 893 if( ret != 0 )
borlanic 0:fbdae7e6d805 894 goto exit;
borlanic 0:fbdae7e6d805 895
borlanic 0:fbdae7e6d805 896 ret = mbedtls_gcm_starts( &ctx, MBEDTLS_GCM_DECRYPT,
borlanic 0:fbdae7e6d805 897 iv[iv_index[i]], iv_len[i],
borlanic 0:fbdae7e6d805 898 additional[add_index[i]], add_len[i] );
borlanic 0:fbdae7e6d805 899 if( ret != 0 )
borlanic 0:fbdae7e6d805 900 goto exit;
borlanic 0:fbdae7e6d805 901
borlanic 0:fbdae7e6d805 902 if( pt_len[i] > 32 )
borlanic 0:fbdae7e6d805 903 {
borlanic 0:fbdae7e6d805 904 size_t rest_len = pt_len[i] - 32;
borlanic 0:fbdae7e6d805 905 ret = mbedtls_gcm_update( &ctx, 32, ct[j * 6 + i], buf );
borlanic 0:fbdae7e6d805 906 if( ret != 0 )
borlanic 0:fbdae7e6d805 907 goto exit;
borlanic 0:fbdae7e6d805 908
borlanic 0:fbdae7e6d805 909 ret = mbedtls_gcm_update( &ctx, rest_len, ct[j * 6 + i] + 32,
borlanic 0:fbdae7e6d805 910 buf + 32 );
borlanic 0:fbdae7e6d805 911 if( ret != 0 )
borlanic 0:fbdae7e6d805 912 goto exit;
borlanic 0:fbdae7e6d805 913 }
borlanic 0:fbdae7e6d805 914 else
borlanic 0:fbdae7e6d805 915 {
borlanic 0:fbdae7e6d805 916 ret = mbedtls_gcm_update( &ctx, pt_len[i], ct[j * 6 + i],
borlanic 0:fbdae7e6d805 917 buf );
borlanic 0:fbdae7e6d805 918 if( ret != 0 )
borlanic 0:fbdae7e6d805 919 goto exit;
borlanic 0:fbdae7e6d805 920 }
borlanic 0:fbdae7e6d805 921
borlanic 0:fbdae7e6d805 922 ret = mbedtls_gcm_finish( &ctx, tag_buf, 16 );
borlanic 0:fbdae7e6d805 923 if( ret != 0 )
borlanic 0:fbdae7e6d805 924 goto exit;
borlanic 0:fbdae7e6d805 925
borlanic 0:fbdae7e6d805 926 if( memcmp( buf, pt[pt_index[i]], pt_len[i] ) != 0 ||
borlanic 0:fbdae7e6d805 927 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
borlanic 0:fbdae7e6d805 928 {
borlanic 0:fbdae7e6d805 929 ret = 1;
borlanic 0:fbdae7e6d805 930 goto exit;
borlanic 0:fbdae7e6d805 931 }
borlanic 0:fbdae7e6d805 932
borlanic 0:fbdae7e6d805 933 mbedtls_gcm_free( &ctx );
borlanic 0:fbdae7e6d805 934
borlanic 0:fbdae7e6d805 935 if( verbose != 0 )
borlanic 0:fbdae7e6d805 936 mbedtls_printf( "passed\n" );
borlanic 0:fbdae7e6d805 937 }
borlanic 0:fbdae7e6d805 938 }
borlanic 0:fbdae7e6d805 939
borlanic 0:fbdae7e6d805 940 if( verbose != 0 )
borlanic 0:fbdae7e6d805 941 mbedtls_printf( "\n" );
borlanic 0:fbdae7e6d805 942
borlanic 0:fbdae7e6d805 943 ret = 0;
borlanic 0:fbdae7e6d805 944
borlanic 0:fbdae7e6d805 945 exit:
borlanic 0:fbdae7e6d805 946 if( ret != 0 )
borlanic 0:fbdae7e6d805 947 {
borlanic 0:fbdae7e6d805 948 if( verbose != 0 )
borlanic 0:fbdae7e6d805 949 mbedtls_printf( "failed\n" );
borlanic 0:fbdae7e6d805 950 mbedtls_gcm_free( &ctx );
borlanic 0:fbdae7e6d805 951 }
borlanic 0:fbdae7e6d805 952
borlanic 0:fbdae7e6d805 953 return( ret );
borlanic 0:fbdae7e6d805 954 }
borlanic 0:fbdae7e6d805 955
borlanic 0:fbdae7e6d805 956 #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
borlanic 0:fbdae7e6d805 957
borlanic 0:fbdae7e6d805 958 #endif /* MBEDTLS_GCM_C */