sandbox / mbedtls

mbedtls ported to mbed-classic

Fork of mbedtls by Christopher Haster

source/gcm.c@1:24750b9ad5ef, 2016-01-22 (annotated)

Committer:
Christopher Haster
Date:
Fri Jan 22 16:44:49 2016 -0600
Revision:
1:24750b9ad5ef
Initial move of mbedtls to mercurial

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Christopher Haster 1:24750b9ad5ef 1 /*
Christopher Haster 1:24750b9ad5ef 2 * NIST SP800-38D compliant GCM implementation
Christopher Haster 1:24750b9ad5ef 3 *
Christopher Haster 1:24750b9ad5ef 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
Christopher Haster 1:24750b9ad5ef 5 * SPDX-License-Identifier: Apache-2.0
Christopher Haster 1:24750b9ad5ef 6 *
Christopher Haster 1:24750b9ad5ef 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
Christopher Haster 1:24750b9ad5ef 8 * not use this file except in compliance with the License.
Christopher Haster 1:24750b9ad5ef 9 * You may obtain a copy of the License at
Christopher Haster 1:24750b9ad5ef 10 *
Christopher Haster 1:24750b9ad5ef 11 * http://www.apache.org/licenses/LICENSE-2.0
Christopher Haster 1:24750b9ad5ef 12 *
Christopher Haster 1:24750b9ad5ef 13 * Unless required by applicable law or agreed to in writing, software
Christopher Haster 1:24750b9ad5ef 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
Christopher Haster 1:24750b9ad5ef 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Christopher Haster 1:24750b9ad5ef 16 * See the License for the specific language governing permissions and
Christopher Haster 1:24750b9ad5ef 17 * limitations under the License.
Christopher Haster 1:24750b9ad5ef 18 *
Christopher Haster 1:24750b9ad5ef 19 * This file is part of mbed TLS (https://tls.mbed.org)
Christopher Haster 1:24750b9ad5ef 20 */
Christopher Haster 1:24750b9ad5ef 21
Christopher Haster 1:24750b9ad5ef 22 /*
Christopher Haster 1:24750b9ad5ef 23 * http://csrc.nist.gov/publications/nistpubs/800-38D/SP-800-38D.pdf
Christopher Haster 1:24750b9ad5ef 24 *
Christopher Haster 1:24750b9ad5ef 25 * See also:
Christopher Haster 1:24750b9ad5ef 26 * [MGV] http://csrc.nist.gov/groups/ST/toolkit/BCM/documents/proposedmodes/gcm/gcm-revised-spec.pdf
Christopher Haster 1:24750b9ad5ef 27 *
Christopher Haster 1:24750b9ad5ef 28 * We use the algorithm described as Shoup's method with 4-bit tables in
Christopher Haster 1:24750b9ad5ef 29 * [MGV] 4.1, pp. 12-13, to enhance speed without using too much memory.
Christopher Haster 1:24750b9ad5ef 30 */
Christopher Haster 1:24750b9ad5ef 31
Christopher Haster 1:24750b9ad5ef 32 #if !defined(MBEDTLS_CONFIG_FILE)
Christopher Haster 1:24750b9ad5ef 33 #include "mbedtls/config.h"
Christopher Haster 1:24750b9ad5ef 34 #else
Christopher Haster 1:24750b9ad5ef 35 #include MBEDTLS_CONFIG_FILE
Christopher Haster 1:24750b9ad5ef 36 #endif
Christopher Haster 1:24750b9ad5ef 37
Christopher Haster 1:24750b9ad5ef 38 #if defined(MBEDTLS_GCM_C)
Christopher Haster 1:24750b9ad5ef 39
Christopher Haster 1:24750b9ad5ef 40 #include "mbedtls/gcm.h"
Christopher Haster 1:24750b9ad5ef 41
Christopher Haster 1:24750b9ad5ef 42 #include <string.h>
Christopher Haster 1:24750b9ad5ef 43
Christopher Haster 1:24750b9ad5ef 44 #if defined(MBEDTLS_AESNI_C)
Christopher Haster 1:24750b9ad5ef 45 #include "mbedtls/aesni.h"
Christopher Haster 1:24750b9ad5ef 46 #endif
Christopher Haster 1:24750b9ad5ef 47
Christopher Haster 1:24750b9ad5ef 48 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
Christopher Haster 1:24750b9ad5ef 49 #if defined(MBEDTLS_PLATFORM_C)
Christopher Haster 1:24750b9ad5ef 50 #include "mbedtls/platform.h"
Christopher Haster 1:24750b9ad5ef 51 #else
Christopher Haster 1:24750b9ad5ef 52 #include <stdio.h>
Christopher Haster 1:24750b9ad5ef 53 #define mbedtls_printf printf
Christopher Haster 1:24750b9ad5ef 54 #endif /* MBEDTLS_PLATFORM_C */
Christopher Haster 1:24750b9ad5ef 55 #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
Christopher Haster 1:24750b9ad5ef 56
Christopher Haster 1:24750b9ad5ef 57 /*
Christopher Haster 1:24750b9ad5ef 58 * 32-bit integer manipulation macros (big endian)
Christopher Haster 1:24750b9ad5ef 59 */
Christopher Haster 1:24750b9ad5ef 60 #ifndef GET_UINT32_BE
Christopher Haster 1:24750b9ad5ef 61 #define GET_UINT32_BE(n,b,i) \
Christopher Haster 1:24750b9ad5ef 62 { \
Christopher Haster 1:24750b9ad5ef 63 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
Christopher Haster 1:24750b9ad5ef 64 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
Christopher Haster 1:24750b9ad5ef 65 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
Christopher Haster 1:24750b9ad5ef 66 | ( (uint32_t) (b)[(i) + 3] ); \
Christopher Haster 1:24750b9ad5ef 67 }
Christopher Haster 1:24750b9ad5ef 68 #endif
Christopher Haster 1:24750b9ad5ef 69
Christopher Haster 1:24750b9ad5ef 70 #ifndef PUT_UINT32_BE
Christopher Haster 1:24750b9ad5ef 71 #define PUT_UINT32_BE(n,b,i) \
Christopher Haster 1:24750b9ad5ef 72 { \
Christopher Haster 1:24750b9ad5ef 73 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
Christopher Haster 1:24750b9ad5ef 74 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
Christopher Haster 1:24750b9ad5ef 75 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
Christopher Haster 1:24750b9ad5ef 76 (b)[(i) + 3] = (unsigned char) ( (n) ); \
Christopher Haster 1:24750b9ad5ef 77 }
Christopher Haster 1:24750b9ad5ef 78 #endif
Christopher Haster 1:24750b9ad5ef 79
Christopher Haster 1:24750b9ad5ef 80 /* Implementation that should never be optimized out by the compiler */
Christopher Haster 1:24750b9ad5ef 81 static void mbedtls_zeroize( void *v, size_t n ) {
Christopher Haster 1:24750b9ad5ef 82 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
Christopher Haster 1:24750b9ad5ef 83 }
Christopher Haster 1:24750b9ad5ef 84
Christopher Haster 1:24750b9ad5ef 85 /*
Christopher Haster 1:24750b9ad5ef 86 * Initialize a context
Christopher Haster 1:24750b9ad5ef 87 */
Christopher Haster 1:24750b9ad5ef 88 void mbedtls_gcm_init( mbedtls_gcm_context *ctx )
Christopher Haster 1:24750b9ad5ef 89 {
Christopher Haster 1:24750b9ad5ef 90 memset( ctx, 0, sizeof( mbedtls_gcm_context ) );
Christopher Haster 1:24750b9ad5ef 91 }
Christopher Haster 1:24750b9ad5ef 92
Christopher Haster 1:24750b9ad5ef 93 /*
Christopher Haster 1:24750b9ad5ef 94 * Precompute small multiples of H, that is set
Christopher Haster 1:24750b9ad5ef 95 * HH[i] || HL[i] = H times i,
Christopher Haster 1:24750b9ad5ef 96 * where i is seen as a field element as in [MGV], ie high-order bits
Christopher Haster 1:24750b9ad5ef 97 * correspond to low powers of P. The result is stored in the same way, that
Christopher Haster 1:24750b9ad5ef 98 * is the high-order bit of HH corresponds to P^0 and the low-order bit of HL
Christopher Haster 1:24750b9ad5ef 99 * corresponds to P^127.
Christopher Haster 1:24750b9ad5ef 100 */
Christopher Haster 1:24750b9ad5ef 101 static int gcm_gen_table( mbedtls_gcm_context *ctx )
Christopher Haster 1:24750b9ad5ef 102 {
Christopher Haster 1:24750b9ad5ef 103 int ret, i, j;
Christopher Haster 1:24750b9ad5ef 104 uint64_t hi, lo;
Christopher Haster 1:24750b9ad5ef 105 uint64_t vl, vh;
Christopher Haster 1:24750b9ad5ef 106 unsigned char h[16];
Christopher Haster 1:24750b9ad5ef 107 size_t olen = 0;
Christopher Haster 1:24750b9ad5ef 108
Christopher Haster 1:24750b9ad5ef 109 memset( h, 0, 16 );
Christopher Haster 1:24750b9ad5ef 110 if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, h, 16, h, &olen ) ) != 0 )
Christopher Haster 1:24750b9ad5ef 111 return( ret );
Christopher Haster 1:24750b9ad5ef 112
Christopher Haster 1:24750b9ad5ef 113 /* pack h as two 64-bits ints, big-endian */
Christopher Haster 1:24750b9ad5ef 114 GET_UINT32_BE( hi, h, 0 );
Christopher Haster 1:24750b9ad5ef 115 GET_UINT32_BE( lo, h, 4 );
Christopher Haster 1:24750b9ad5ef 116 vh = (uint64_t) hi << 32 | lo;
Christopher Haster 1:24750b9ad5ef 117
Christopher Haster 1:24750b9ad5ef 118 GET_UINT32_BE( hi, h, 8 );
Christopher Haster 1:24750b9ad5ef 119 GET_UINT32_BE( lo, h, 12 );
Christopher Haster 1:24750b9ad5ef 120 vl = (uint64_t) hi << 32 | lo;
Christopher Haster 1:24750b9ad5ef 121
Christopher Haster 1:24750b9ad5ef 122 /* 8 = 1000 corresponds to 1 in GF(2^128) */
Christopher Haster 1:24750b9ad5ef 123 ctx->HL[8] = vl;
Christopher Haster 1:24750b9ad5ef 124 ctx->HH[8] = vh;
Christopher Haster 1:24750b9ad5ef 125
Christopher Haster 1:24750b9ad5ef 126 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
Christopher Haster 1:24750b9ad5ef 127 /* With CLMUL support, we need only h, not the rest of the table */
Christopher Haster 1:24750b9ad5ef 128 if( mbedtls_aesni_has_support( MBEDTLS_AESNI_CLMUL ) )
Christopher Haster 1:24750b9ad5ef 129 return( 0 );
Christopher Haster 1:24750b9ad5ef 130 #endif
Christopher Haster 1:24750b9ad5ef 131
Christopher Haster 1:24750b9ad5ef 132 /* 0 corresponds to 0 in GF(2^128) */
Christopher Haster 1:24750b9ad5ef 133 ctx->HH[0] = 0;
Christopher Haster 1:24750b9ad5ef 134 ctx->HL[0] = 0;
Christopher Haster 1:24750b9ad5ef 135
Christopher Haster 1:24750b9ad5ef 136 for( i = 4; i > 0; i >>= 1 )
Christopher Haster 1:24750b9ad5ef 137 {
Christopher Haster 1:24750b9ad5ef 138 uint32_t T = ( vl & 1 ) * 0xe1000000U;
Christopher Haster 1:24750b9ad5ef 139 vl = ( vh << 63 ) | ( vl >> 1 );
Christopher Haster 1:24750b9ad5ef 140 vh = ( vh >> 1 ) ^ ( (uint64_t) T << 32);
Christopher Haster 1:24750b9ad5ef 141
Christopher Haster 1:24750b9ad5ef 142 ctx->HL[i] = vl;
Christopher Haster 1:24750b9ad5ef 143 ctx->HH[i] = vh;
Christopher Haster 1:24750b9ad5ef 144 }
Christopher Haster 1:24750b9ad5ef 145
Christopher Haster 1:24750b9ad5ef 146 for( i = 2; i <= 8; i *= 2 )
Christopher Haster 1:24750b9ad5ef 147 {
Christopher Haster 1:24750b9ad5ef 148 uint64_t *HiL = ctx->HL + i, *HiH = ctx->HH + i;
Christopher Haster 1:24750b9ad5ef 149 vh = *HiH;
Christopher Haster 1:24750b9ad5ef 150 vl = *HiL;
Christopher Haster 1:24750b9ad5ef 151 for( j = 1; j < i; j++ )
Christopher Haster 1:24750b9ad5ef 152 {
Christopher Haster 1:24750b9ad5ef 153 HiH[j] = vh ^ ctx->HH[j];
Christopher Haster 1:24750b9ad5ef 154 HiL[j] = vl ^ ctx->HL[j];
Christopher Haster 1:24750b9ad5ef 155 }
Christopher Haster 1:24750b9ad5ef 156 }
Christopher Haster 1:24750b9ad5ef 157
Christopher Haster 1:24750b9ad5ef 158 return( 0 );
Christopher Haster 1:24750b9ad5ef 159 }
Christopher Haster 1:24750b9ad5ef 160
Christopher Haster 1:24750b9ad5ef 161 int mbedtls_gcm_setkey( mbedtls_gcm_context *ctx,
Christopher Haster 1:24750b9ad5ef 162 mbedtls_cipher_id_t cipher,
Christopher Haster 1:24750b9ad5ef 163 const unsigned char *key,
Christopher Haster 1:24750b9ad5ef 164 unsigned int keybits )
Christopher Haster 1:24750b9ad5ef 165 {
Christopher Haster 1:24750b9ad5ef 166 int ret;
Christopher Haster 1:24750b9ad5ef 167 const mbedtls_cipher_info_t *cipher_info;
Christopher Haster 1:24750b9ad5ef 168
Christopher Haster 1:24750b9ad5ef 169 cipher_info = mbedtls_cipher_info_from_values( cipher, keybits, MBEDTLS_MODE_ECB );
Christopher Haster 1:24750b9ad5ef 170 if( cipher_info == NULL )
Christopher Haster 1:24750b9ad5ef 171 return( MBEDTLS_ERR_GCM_BAD_INPUT );
Christopher Haster 1:24750b9ad5ef 172
Christopher Haster 1:24750b9ad5ef 173 if( cipher_info->block_size != 16 )
Christopher Haster 1:24750b9ad5ef 174 return( MBEDTLS_ERR_GCM_BAD_INPUT );
Christopher Haster 1:24750b9ad5ef 175
Christopher Haster 1:24750b9ad5ef 176 mbedtls_cipher_free( &ctx->cipher_ctx );
Christopher Haster 1:24750b9ad5ef 177
Christopher Haster 1:24750b9ad5ef 178 if( ( ret = mbedtls_cipher_setup( &ctx->cipher_ctx, cipher_info ) ) != 0 )
Christopher Haster 1:24750b9ad5ef 179 return( ret );
Christopher Haster 1:24750b9ad5ef 180
Christopher Haster 1:24750b9ad5ef 181 if( ( ret = mbedtls_cipher_setkey( &ctx->cipher_ctx, key, keybits,
Christopher Haster 1:24750b9ad5ef 182 MBEDTLS_ENCRYPT ) ) != 0 )
Christopher Haster 1:24750b9ad5ef 183 {
Christopher Haster 1:24750b9ad5ef 184 return( ret );
Christopher Haster 1:24750b9ad5ef 185 }
Christopher Haster 1:24750b9ad5ef 186
Christopher Haster 1:24750b9ad5ef 187 if( ( ret = gcm_gen_table( ctx ) ) != 0 )
Christopher Haster 1:24750b9ad5ef 188 return( ret );
Christopher Haster 1:24750b9ad5ef 189
Christopher Haster 1:24750b9ad5ef 190 return( 0 );
Christopher Haster 1:24750b9ad5ef 191 }
Christopher Haster 1:24750b9ad5ef 192
Christopher Haster 1:24750b9ad5ef 193 /*
Christopher Haster 1:24750b9ad5ef 194 * Shoup's method for multiplication use this table with
Christopher Haster 1:24750b9ad5ef 195 * last4[x] = x times P^128
Christopher Haster 1:24750b9ad5ef 196 * where x and last4[x] are seen as elements of GF(2^128) as in [MGV]
Christopher Haster 1:24750b9ad5ef 197 */
Christopher Haster 1:24750b9ad5ef 198 static const uint64_t last4[16] =
Christopher Haster 1:24750b9ad5ef 199 {
Christopher Haster 1:24750b9ad5ef 200 0x0000, 0x1c20, 0x3840, 0x2460,
Christopher Haster 1:24750b9ad5ef 201 0x7080, 0x6ca0, 0x48c0, 0x54e0,
Christopher Haster 1:24750b9ad5ef 202 0xe100, 0xfd20, 0xd940, 0xc560,
Christopher Haster 1:24750b9ad5ef 203 0x9180, 0x8da0, 0xa9c0, 0xb5e0
Christopher Haster 1:24750b9ad5ef 204 };
Christopher Haster 1:24750b9ad5ef 205
Christopher Haster 1:24750b9ad5ef 206 /*
Christopher Haster 1:24750b9ad5ef 207 * Sets output to x times H using the precomputed tables.
Christopher Haster 1:24750b9ad5ef 208 * x and output are seen as elements of GF(2^128) as in [MGV].
Christopher Haster 1:24750b9ad5ef 209 */
Christopher Haster 1:24750b9ad5ef 210 static void gcm_mult( mbedtls_gcm_context *ctx, const unsigned char x[16],
Christopher Haster 1:24750b9ad5ef 211 unsigned char output[16] )
Christopher Haster 1:24750b9ad5ef 212 {
Christopher Haster 1:24750b9ad5ef 213 int i = 0;
Christopher Haster 1:24750b9ad5ef 214 unsigned char lo, hi, rem;
Christopher Haster 1:24750b9ad5ef 215 uint64_t zh, zl;
Christopher Haster 1:24750b9ad5ef 216
Christopher Haster 1:24750b9ad5ef 217 #if defined(MBEDTLS_AESNI_C) && defined(MBEDTLS_HAVE_X86_64)
Christopher Haster 1:24750b9ad5ef 218 if( mbedtls_aesni_has_support( MBEDTLS_AESNI_CLMUL ) ) {
Christopher Haster 1:24750b9ad5ef 219 unsigned char h[16];
Christopher Haster 1:24750b9ad5ef 220
Christopher Haster 1:24750b9ad5ef 221 PUT_UINT32_BE( ctx->HH[8] >> 32, h, 0 );
Christopher Haster 1:24750b9ad5ef 222 PUT_UINT32_BE( ctx->HH[8], h, 4 );
Christopher Haster 1:24750b9ad5ef 223 PUT_UINT32_BE( ctx->HL[8] >> 32, h, 8 );
Christopher Haster 1:24750b9ad5ef 224 PUT_UINT32_BE( ctx->HL[8], h, 12 );
Christopher Haster 1:24750b9ad5ef 225
Christopher Haster 1:24750b9ad5ef 226 mbedtls_aesni_gcm_mult( output, x, h );
Christopher Haster 1:24750b9ad5ef 227 return;
Christopher Haster 1:24750b9ad5ef 228 }
Christopher Haster 1:24750b9ad5ef 229 #endif /* MBEDTLS_AESNI_C && MBEDTLS_HAVE_X86_64 */
Christopher Haster 1:24750b9ad5ef 230
Christopher Haster 1:24750b9ad5ef 231 lo = x[15] & 0xf;
Christopher Haster 1:24750b9ad5ef 232
Christopher Haster 1:24750b9ad5ef 233 zh = ctx->HH[lo];
Christopher Haster 1:24750b9ad5ef 234 zl = ctx->HL[lo];
Christopher Haster 1:24750b9ad5ef 235
Christopher Haster 1:24750b9ad5ef 236 for( i = 15; i >= 0; i-- )
Christopher Haster 1:24750b9ad5ef 237 {
Christopher Haster 1:24750b9ad5ef 238 lo = x[i] & 0xf;
Christopher Haster 1:24750b9ad5ef 239 hi = x[i] >> 4;
Christopher Haster 1:24750b9ad5ef 240
Christopher Haster 1:24750b9ad5ef 241 if( i != 15 )
Christopher Haster 1:24750b9ad5ef 242 {
Christopher Haster 1:24750b9ad5ef 243 rem = (unsigned char) zl & 0xf;
Christopher Haster 1:24750b9ad5ef 244 zl = ( zh << 60 ) | ( zl >> 4 );
Christopher Haster 1:24750b9ad5ef 245 zh = ( zh >> 4 );
Christopher Haster 1:24750b9ad5ef 246 zh ^= (uint64_t) last4[rem] << 48;
Christopher Haster 1:24750b9ad5ef 247 zh ^= ctx->HH[lo];
Christopher Haster 1:24750b9ad5ef 248 zl ^= ctx->HL[lo];
Christopher Haster 1:24750b9ad5ef 249
Christopher Haster 1:24750b9ad5ef 250 }
Christopher Haster 1:24750b9ad5ef 251
Christopher Haster 1:24750b9ad5ef 252 rem = (unsigned char) zl & 0xf;
Christopher Haster 1:24750b9ad5ef 253 zl = ( zh << 60 ) | ( zl >> 4 );
Christopher Haster 1:24750b9ad5ef 254 zh = ( zh >> 4 );
Christopher Haster 1:24750b9ad5ef 255 zh ^= (uint64_t) last4[rem] << 48;
Christopher Haster 1:24750b9ad5ef 256 zh ^= ctx->HH[hi];
Christopher Haster 1:24750b9ad5ef 257 zl ^= ctx->HL[hi];
Christopher Haster 1:24750b9ad5ef 258 }
Christopher Haster 1:24750b9ad5ef 259
Christopher Haster 1:24750b9ad5ef 260 PUT_UINT32_BE( zh >> 32, output, 0 );
Christopher Haster 1:24750b9ad5ef 261 PUT_UINT32_BE( zh, output, 4 );
Christopher Haster 1:24750b9ad5ef 262 PUT_UINT32_BE( zl >> 32, output, 8 );
Christopher Haster 1:24750b9ad5ef 263 PUT_UINT32_BE( zl, output, 12 );
Christopher Haster 1:24750b9ad5ef 264 }
Christopher Haster 1:24750b9ad5ef 265
Christopher Haster 1:24750b9ad5ef 266 int mbedtls_gcm_starts( mbedtls_gcm_context *ctx,
Christopher Haster 1:24750b9ad5ef 267 int mode,
Christopher Haster 1:24750b9ad5ef 268 const unsigned char *iv,
Christopher Haster 1:24750b9ad5ef 269 size_t iv_len,
Christopher Haster 1:24750b9ad5ef 270 const unsigned char *add,
Christopher Haster 1:24750b9ad5ef 271 size_t add_len )
Christopher Haster 1:24750b9ad5ef 272 {
Christopher Haster 1:24750b9ad5ef 273 int ret;
Christopher Haster 1:24750b9ad5ef 274 unsigned char work_buf[16];
Christopher Haster 1:24750b9ad5ef 275 size_t i;
Christopher Haster 1:24750b9ad5ef 276 const unsigned char *p;
Christopher Haster 1:24750b9ad5ef 277 size_t use_len, olen = 0;
Christopher Haster 1:24750b9ad5ef 278
Christopher Haster 1:24750b9ad5ef 279 /* IV and AD are limited to 2^64 bits, so 2^61 bytes */
Christopher Haster 1:24750b9ad5ef 280 if( ( (uint64_t) iv_len ) >> 61 != 0 ||
Christopher Haster 1:24750b9ad5ef 281 ( (uint64_t) add_len ) >> 61 != 0 )
Christopher Haster 1:24750b9ad5ef 282 {
Christopher Haster 1:24750b9ad5ef 283 return( MBEDTLS_ERR_GCM_BAD_INPUT );
Christopher Haster 1:24750b9ad5ef 284 }
Christopher Haster 1:24750b9ad5ef 285
Christopher Haster 1:24750b9ad5ef 286 memset( ctx->y, 0x00, sizeof(ctx->y) );
Christopher Haster 1:24750b9ad5ef 287 memset( ctx->buf, 0x00, sizeof(ctx->buf) );
Christopher Haster 1:24750b9ad5ef 288
Christopher Haster 1:24750b9ad5ef 289 ctx->mode = mode;
Christopher Haster 1:24750b9ad5ef 290 ctx->len = 0;
Christopher Haster 1:24750b9ad5ef 291 ctx->add_len = 0;
Christopher Haster 1:24750b9ad5ef 292
Christopher Haster 1:24750b9ad5ef 293 if( iv_len == 12 )
Christopher Haster 1:24750b9ad5ef 294 {
Christopher Haster 1:24750b9ad5ef 295 memcpy( ctx->y, iv, iv_len );
Christopher Haster 1:24750b9ad5ef 296 ctx->y[15] = 1;
Christopher Haster 1:24750b9ad5ef 297 }
Christopher Haster 1:24750b9ad5ef 298 else
Christopher Haster 1:24750b9ad5ef 299 {
Christopher Haster 1:24750b9ad5ef 300 memset( work_buf, 0x00, 16 );
Christopher Haster 1:24750b9ad5ef 301 PUT_UINT32_BE( iv_len * 8, work_buf, 12 );
Christopher Haster 1:24750b9ad5ef 302
Christopher Haster 1:24750b9ad5ef 303 p = iv;
Christopher Haster 1:24750b9ad5ef 304 while( iv_len > 0 )
Christopher Haster 1:24750b9ad5ef 305 {
Christopher Haster 1:24750b9ad5ef 306 use_len = ( iv_len < 16 ) ? iv_len : 16;
Christopher Haster 1:24750b9ad5ef 307
Christopher Haster 1:24750b9ad5ef 308 for( i = 0; i < use_len; i++ )
Christopher Haster 1:24750b9ad5ef 309 ctx->y[i] ^= p[i];
Christopher Haster 1:24750b9ad5ef 310
Christopher Haster 1:24750b9ad5ef 311 gcm_mult( ctx, ctx->y, ctx->y );
Christopher Haster 1:24750b9ad5ef 312
Christopher Haster 1:24750b9ad5ef 313 iv_len -= use_len;
Christopher Haster 1:24750b9ad5ef 314 p += use_len;
Christopher Haster 1:24750b9ad5ef 315 }
Christopher Haster 1:24750b9ad5ef 316
Christopher Haster 1:24750b9ad5ef 317 for( i = 0; i < 16; i++ )
Christopher Haster 1:24750b9ad5ef 318 ctx->y[i] ^= work_buf[i];
Christopher Haster 1:24750b9ad5ef 319
Christopher Haster 1:24750b9ad5ef 320 gcm_mult( ctx, ctx->y, ctx->y );
Christopher Haster 1:24750b9ad5ef 321 }
Christopher Haster 1:24750b9ad5ef 322
Christopher Haster 1:24750b9ad5ef 323 if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ctx->base_ectr,
Christopher Haster 1:24750b9ad5ef 324 &olen ) ) != 0 )
Christopher Haster 1:24750b9ad5ef 325 {
Christopher Haster 1:24750b9ad5ef 326 return( ret );
Christopher Haster 1:24750b9ad5ef 327 }
Christopher Haster 1:24750b9ad5ef 328
Christopher Haster 1:24750b9ad5ef 329 ctx->add_len = add_len;
Christopher Haster 1:24750b9ad5ef 330 p = add;
Christopher Haster 1:24750b9ad5ef 331 while( add_len > 0 )
Christopher Haster 1:24750b9ad5ef 332 {
Christopher Haster 1:24750b9ad5ef 333 use_len = ( add_len < 16 ) ? add_len : 16;
Christopher Haster 1:24750b9ad5ef 334
Christopher Haster 1:24750b9ad5ef 335 for( i = 0; i < use_len; i++ )
Christopher Haster 1:24750b9ad5ef 336 ctx->buf[i] ^= p[i];
Christopher Haster 1:24750b9ad5ef 337
Christopher Haster 1:24750b9ad5ef 338 gcm_mult( ctx, ctx->buf, ctx->buf );
Christopher Haster 1:24750b9ad5ef 339
Christopher Haster 1:24750b9ad5ef 340 add_len -= use_len;
Christopher Haster 1:24750b9ad5ef 341 p += use_len;
Christopher Haster 1:24750b9ad5ef 342 }
Christopher Haster 1:24750b9ad5ef 343
Christopher Haster 1:24750b9ad5ef 344 return( 0 );
Christopher Haster 1:24750b9ad5ef 345 }
Christopher Haster 1:24750b9ad5ef 346
Christopher Haster 1:24750b9ad5ef 347 int mbedtls_gcm_update( mbedtls_gcm_context *ctx,
Christopher Haster 1:24750b9ad5ef 348 size_t length,
Christopher Haster 1:24750b9ad5ef 349 const unsigned char *input,
Christopher Haster 1:24750b9ad5ef 350 unsigned char *output )
Christopher Haster 1:24750b9ad5ef 351 {
Christopher Haster 1:24750b9ad5ef 352 int ret;
Christopher Haster 1:24750b9ad5ef 353 unsigned char ectr[16];
Christopher Haster 1:24750b9ad5ef 354 size_t i;
Christopher Haster 1:24750b9ad5ef 355 const unsigned char *p;
Christopher Haster 1:24750b9ad5ef 356 unsigned char *out_p = output;
Christopher Haster 1:24750b9ad5ef 357 size_t use_len, olen = 0;
Christopher Haster 1:24750b9ad5ef 358
Christopher Haster 1:24750b9ad5ef 359 if( output > input && (size_t) ( output - input ) < length )
Christopher Haster 1:24750b9ad5ef 360 return( MBEDTLS_ERR_GCM_BAD_INPUT );
Christopher Haster 1:24750b9ad5ef 361
Christopher Haster 1:24750b9ad5ef 362 /* Total length is restricted to 2^39 - 256 bits, ie 2^36 - 2^5 bytes
Christopher Haster 1:24750b9ad5ef 363 * Also check for possible overflow */
Christopher Haster 1:24750b9ad5ef 364 if( ctx->len + length < ctx->len ||
Christopher Haster 1:24750b9ad5ef 365 (uint64_t) ctx->len + length > 0x03FFFFE0ull )
Christopher Haster 1:24750b9ad5ef 366 {
Christopher Haster 1:24750b9ad5ef 367 return( MBEDTLS_ERR_GCM_BAD_INPUT );
Christopher Haster 1:24750b9ad5ef 368 }
Christopher Haster 1:24750b9ad5ef 369
Christopher Haster 1:24750b9ad5ef 370 ctx->len += length;
Christopher Haster 1:24750b9ad5ef 371
Christopher Haster 1:24750b9ad5ef 372 p = input;
Christopher Haster 1:24750b9ad5ef 373 while( length > 0 )
Christopher Haster 1:24750b9ad5ef 374 {
Christopher Haster 1:24750b9ad5ef 375 use_len = ( length < 16 ) ? length : 16;
Christopher Haster 1:24750b9ad5ef 376
Christopher Haster 1:24750b9ad5ef 377 for( i = 16; i > 12; i-- )
Christopher Haster 1:24750b9ad5ef 378 if( ++ctx->y[i - 1] != 0 )
Christopher Haster 1:24750b9ad5ef 379 break;
Christopher Haster 1:24750b9ad5ef 380
Christopher Haster 1:24750b9ad5ef 381 if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, ctx->y, 16, ectr,
Christopher Haster 1:24750b9ad5ef 382 &olen ) ) != 0 )
Christopher Haster 1:24750b9ad5ef 383 {
Christopher Haster 1:24750b9ad5ef 384 return( ret );
Christopher Haster 1:24750b9ad5ef 385 }
Christopher Haster 1:24750b9ad5ef 386
Christopher Haster 1:24750b9ad5ef 387 for( i = 0; i < use_len; i++ )
Christopher Haster 1:24750b9ad5ef 388 {
Christopher Haster 1:24750b9ad5ef 389 if( ctx->mode == MBEDTLS_GCM_DECRYPT )
Christopher Haster 1:24750b9ad5ef 390 ctx->buf[i] ^= p[i];
Christopher Haster 1:24750b9ad5ef 391 out_p[i] = ectr[i] ^ p[i];
Christopher Haster 1:24750b9ad5ef 392 if( ctx->mode == MBEDTLS_GCM_ENCRYPT )
Christopher Haster 1:24750b9ad5ef 393 ctx->buf[i] ^= out_p[i];
Christopher Haster 1:24750b9ad5ef 394 }
Christopher Haster 1:24750b9ad5ef 395
Christopher Haster 1:24750b9ad5ef 396 gcm_mult( ctx, ctx->buf, ctx->buf );
Christopher Haster 1:24750b9ad5ef 397
Christopher Haster 1:24750b9ad5ef 398 length -= use_len;
Christopher Haster 1:24750b9ad5ef 399 p += use_len;
Christopher Haster 1:24750b9ad5ef 400 out_p += use_len;
Christopher Haster 1:24750b9ad5ef 401 }
Christopher Haster 1:24750b9ad5ef 402
Christopher Haster 1:24750b9ad5ef 403 return( 0 );
Christopher Haster 1:24750b9ad5ef 404 }
Christopher Haster 1:24750b9ad5ef 405
Christopher Haster 1:24750b9ad5ef 406 int mbedtls_gcm_finish( mbedtls_gcm_context *ctx,
Christopher Haster 1:24750b9ad5ef 407 unsigned char *tag,
Christopher Haster 1:24750b9ad5ef 408 size_t tag_len )
Christopher Haster 1:24750b9ad5ef 409 {
Christopher Haster 1:24750b9ad5ef 410 unsigned char work_buf[16];
Christopher Haster 1:24750b9ad5ef 411 size_t i;
Christopher Haster 1:24750b9ad5ef 412 uint64_t orig_len = ctx->len * 8;
Christopher Haster 1:24750b9ad5ef 413 uint64_t orig_add_len = ctx->add_len * 8;
Christopher Haster 1:24750b9ad5ef 414
Christopher Haster 1:24750b9ad5ef 415 if( tag_len > 16 || tag_len < 4 )
Christopher Haster 1:24750b9ad5ef 416 return( MBEDTLS_ERR_GCM_BAD_INPUT );
Christopher Haster 1:24750b9ad5ef 417
Christopher Haster 1:24750b9ad5ef 418 if( tag_len != 0 )
Christopher Haster 1:24750b9ad5ef 419 memcpy( tag, ctx->base_ectr, tag_len );
Christopher Haster 1:24750b9ad5ef 420
Christopher Haster 1:24750b9ad5ef 421 if( orig_len || orig_add_len )
Christopher Haster 1:24750b9ad5ef 422 {
Christopher Haster 1:24750b9ad5ef 423 memset( work_buf, 0x00, 16 );
Christopher Haster 1:24750b9ad5ef 424
Christopher Haster 1:24750b9ad5ef 425 PUT_UINT32_BE( ( orig_add_len >> 32 ), work_buf, 0 );
Christopher Haster 1:24750b9ad5ef 426 PUT_UINT32_BE( ( orig_add_len ), work_buf, 4 );
Christopher Haster 1:24750b9ad5ef 427 PUT_UINT32_BE( ( orig_len >> 32 ), work_buf, 8 );
Christopher Haster 1:24750b9ad5ef 428 PUT_UINT32_BE( ( orig_len ), work_buf, 12 );
Christopher Haster 1:24750b9ad5ef 429
Christopher Haster 1:24750b9ad5ef 430 for( i = 0; i < 16; i++ )
Christopher Haster 1:24750b9ad5ef 431 ctx->buf[i] ^= work_buf[i];
Christopher Haster 1:24750b9ad5ef 432
Christopher Haster 1:24750b9ad5ef 433 gcm_mult( ctx, ctx->buf, ctx->buf );
Christopher Haster 1:24750b9ad5ef 434
Christopher Haster 1:24750b9ad5ef 435 for( i = 0; i < tag_len; i++ )
Christopher Haster 1:24750b9ad5ef 436 tag[i] ^= ctx->buf[i];
Christopher Haster 1:24750b9ad5ef 437 }
Christopher Haster 1:24750b9ad5ef 438
Christopher Haster 1:24750b9ad5ef 439 return( 0 );
Christopher Haster 1:24750b9ad5ef 440 }
Christopher Haster 1:24750b9ad5ef 441
Christopher Haster 1:24750b9ad5ef 442 int mbedtls_gcm_crypt_and_tag( mbedtls_gcm_context *ctx,
Christopher Haster 1:24750b9ad5ef 443 int mode,
Christopher Haster 1:24750b9ad5ef 444 size_t length,
Christopher Haster 1:24750b9ad5ef 445 const unsigned char *iv,
Christopher Haster 1:24750b9ad5ef 446 size_t iv_len,
Christopher Haster 1:24750b9ad5ef 447 const unsigned char *add,
Christopher Haster 1:24750b9ad5ef 448 size_t add_len,
Christopher Haster 1:24750b9ad5ef 449 const unsigned char *input,
Christopher Haster 1:24750b9ad5ef 450 unsigned char *output,
Christopher Haster 1:24750b9ad5ef 451 size_t tag_len,
Christopher Haster 1:24750b9ad5ef 452 unsigned char *tag )
Christopher Haster 1:24750b9ad5ef 453 {
Christopher Haster 1:24750b9ad5ef 454 int ret;
Christopher Haster 1:24750b9ad5ef 455
Christopher Haster 1:24750b9ad5ef 456 if( ( ret = mbedtls_gcm_starts( ctx, mode, iv, iv_len, add, add_len ) ) != 0 )
Christopher Haster 1:24750b9ad5ef 457 return( ret );
Christopher Haster 1:24750b9ad5ef 458
Christopher Haster 1:24750b9ad5ef 459 if( ( ret = mbedtls_gcm_update( ctx, length, input, output ) ) != 0 )
Christopher Haster 1:24750b9ad5ef 460 return( ret );
Christopher Haster 1:24750b9ad5ef 461
Christopher Haster 1:24750b9ad5ef 462 if( ( ret = mbedtls_gcm_finish( ctx, tag, tag_len ) ) != 0 )
Christopher Haster 1:24750b9ad5ef 463 return( ret );
Christopher Haster 1:24750b9ad5ef 464
Christopher Haster 1:24750b9ad5ef 465 return( 0 );
Christopher Haster 1:24750b9ad5ef 466 }
Christopher Haster 1:24750b9ad5ef 467
Christopher Haster 1:24750b9ad5ef 468 int mbedtls_gcm_auth_decrypt( mbedtls_gcm_context *ctx,
Christopher Haster 1:24750b9ad5ef 469 size_t length,
Christopher Haster 1:24750b9ad5ef 470 const unsigned char *iv,
Christopher Haster 1:24750b9ad5ef 471 size_t iv_len,
Christopher Haster 1:24750b9ad5ef 472 const unsigned char *add,
Christopher Haster 1:24750b9ad5ef 473 size_t add_len,
Christopher Haster 1:24750b9ad5ef 474 const unsigned char *tag,
Christopher Haster 1:24750b9ad5ef 475 size_t tag_len,
Christopher Haster 1:24750b9ad5ef 476 const unsigned char *input,
Christopher Haster 1:24750b9ad5ef 477 unsigned char *output )
Christopher Haster 1:24750b9ad5ef 478 {
Christopher Haster 1:24750b9ad5ef 479 int ret;
Christopher Haster 1:24750b9ad5ef 480 unsigned char check_tag[16];
Christopher Haster 1:24750b9ad5ef 481 size_t i;
Christopher Haster 1:24750b9ad5ef 482 int diff;
Christopher Haster 1:24750b9ad5ef 483
Christopher Haster 1:24750b9ad5ef 484 if( ( ret = mbedtls_gcm_crypt_and_tag( ctx, MBEDTLS_GCM_DECRYPT, length,
Christopher Haster 1:24750b9ad5ef 485 iv, iv_len, add, add_len,
Christopher Haster 1:24750b9ad5ef 486 input, output, tag_len, check_tag ) ) != 0 )
Christopher Haster 1:24750b9ad5ef 487 {
Christopher Haster 1:24750b9ad5ef 488 return( ret );
Christopher Haster 1:24750b9ad5ef 489 }
Christopher Haster 1:24750b9ad5ef 490
Christopher Haster 1:24750b9ad5ef 491 /* Check tag in "constant-time" */
Christopher Haster 1:24750b9ad5ef 492 for( diff = 0, i = 0; i < tag_len; i++ )
Christopher Haster 1:24750b9ad5ef 493 diff |= tag[i] ^ check_tag[i];
Christopher Haster 1:24750b9ad5ef 494
Christopher Haster 1:24750b9ad5ef 495 if( diff != 0 )
Christopher Haster 1:24750b9ad5ef 496 {
Christopher Haster 1:24750b9ad5ef 497 mbedtls_zeroize( output, length );
Christopher Haster 1:24750b9ad5ef 498 return( MBEDTLS_ERR_GCM_AUTH_FAILED );
Christopher Haster 1:24750b9ad5ef 499 }
Christopher Haster 1:24750b9ad5ef 500
Christopher Haster 1:24750b9ad5ef 501 return( 0 );
Christopher Haster 1:24750b9ad5ef 502 }
Christopher Haster 1:24750b9ad5ef 503
Christopher Haster 1:24750b9ad5ef 504 void mbedtls_gcm_free( mbedtls_gcm_context *ctx )
Christopher Haster 1:24750b9ad5ef 505 {
Christopher Haster 1:24750b9ad5ef 506 mbedtls_cipher_free( &ctx->cipher_ctx );
Christopher Haster 1:24750b9ad5ef 507 mbedtls_zeroize( ctx, sizeof( mbedtls_gcm_context ) );
Christopher Haster 1:24750b9ad5ef 508 }
Christopher Haster 1:24750b9ad5ef 509
Christopher Haster 1:24750b9ad5ef 510 #if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
Christopher Haster 1:24750b9ad5ef 511 /*
Christopher Haster 1:24750b9ad5ef 512 * AES-GCM test vectors from:
Christopher Haster 1:24750b9ad5ef 513 *
Christopher Haster 1:24750b9ad5ef 514 * http://csrc.nist.gov/groups/STM/cavp/documents/mac/gcmtestvectors.zip
Christopher Haster 1:24750b9ad5ef 515 */
Christopher Haster 1:24750b9ad5ef 516 #define MAX_TESTS 6
Christopher Haster 1:24750b9ad5ef 517
Christopher Haster 1:24750b9ad5ef 518 static const int key_index[MAX_TESTS] =
Christopher Haster 1:24750b9ad5ef 519 { 0, 0, 1, 1, 1, 1 };
Christopher Haster 1:24750b9ad5ef 520
Christopher Haster 1:24750b9ad5ef 521 static const unsigned char key[MAX_TESTS][32] =
Christopher Haster 1:24750b9ad5ef 522 {
Christopher Haster 1:24750b9ad5ef 523 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
Christopher Haster 1:24750b9ad5ef 524 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
Christopher Haster 1:24750b9ad5ef 525 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
Christopher Haster 1:24750b9ad5ef 526 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
Christopher Haster 1:24750b9ad5ef 527 { 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
Christopher Haster 1:24750b9ad5ef 528 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
Christopher Haster 1:24750b9ad5ef 529 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
Christopher Haster 1:24750b9ad5ef 530 0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08 },
Christopher Haster 1:24750b9ad5ef 531 };
Christopher Haster 1:24750b9ad5ef 532
Christopher Haster 1:24750b9ad5ef 533 static const size_t iv_len[MAX_TESTS] =
Christopher Haster 1:24750b9ad5ef 534 { 12, 12, 12, 12, 8, 60 };
Christopher Haster 1:24750b9ad5ef 535
Christopher Haster 1:24750b9ad5ef 536 static const int iv_index[MAX_TESTS] =
Christopher Haster 1:24750b9ad5ef 537 { 0, 0, 1, 1, 1, 2 };
Christopher Haster 1:24750b9ad5ef 538
Christopher Haster 1:24750b9ad5ef 539 static const unsigned char iv[MAX_TESTS][64] =
Christopher Haster 1:24750b9ad5ef 540 {
Christopher Haster 1:24750b9ad5ef 541 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
Christopher Haster 1:24750b9ad5ef 542 0x00, 0x00, 0x00, 0x00 },
Christopher Haster 1:24750b9ad5ef 543 { 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
Christopher Haster 1:24750b9ad5ef 544 0xde, 0xca, 0xf8, 0x88 },
Christopher Haster 1:24750b9ad5ef 545 { 0x93, 0x13, 0x22, 0x5d, 0xf8, 0x84, 0x06, 0xe5,
Christopher Haster 1:24750b9ad5ef 546 0x55, 0x90, 0x9c, 0x5a, 0xff, 0x52, 0x69, 0xaa,
Christopher Haster 1:24750b9ad5ef 547 0x6a, 0x7a, 0x95, 0x38, 0x53, 0x4f, 0x7d, 0xa1,
Christopher Haster 1:24750b9ad5ef 548 0xe4, 0xc3, 0x03, 0xd2, 0xa3, 0x18, 0xa7, 0x28,
Christopher Haster 1:24750b9ad5ef 549 0xc3, 0xc0, 0xc9, 0x51, 0x56, 0x80, 0x95, 0x39,
Christopher Haster 1:24750b9ad5ef 550 0xfc, 0xf0, 0xe2, 0x42, 0x9a, 0x6b, 0x52, 0x54,
Christopher Haster 1:24750b9ad5ef 551 0x16, 0xae, 0xdb, 0xf5, 0xa0, 0xde, 0x6a, 0x57,
Christopher Haster 1:24750b9ad5ef 552 0xa6, 0x37, 0xb3, 0x9b },
Christopher Haster 1:24750b9ad5ef 553 };
Christopher Haster 1:24750b9ad5ef 554
Christopher Haster 1:24750b9ad5ef 555 static const size_t add_len[MAX_TESTS] =
Christopher Haster 1:24750b9ad5ef 556 { 0, 0, 0, 20, 20, 20 };
Christopher Haster 1:24750b9ad5ef 557
Christopher Haster 1:24750b9ad5ef 558 static const int add_index[MAX_TESTS] =
Christopher Haster 1:24750b9ad5ef 559 { 0, 0, 0, 1, 1, 1 };
Christopher Haster 1:24750b9ad5ef 560
Christopher Haster 1:24750b9ad5ef 561 static const unsigned char additional[MAX_TESTS][64] =
Christopher Haster 1:24750b9ad5ef 562 {
Christopher Haster 1:24750b9ad5ef 563 { 0x00 },
Christopher Haster 1:24750b9ad5ef 564 { 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
Christopher Haster 1:24750b9ad5ef 565 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
Christopher Haster 1:24750b9ad5ef 566 0xab, 0xad, 0xda, 0xd2 },
Christopher Haster 1:24750b9ad5ef 567 };
Christopher Haster 1:24750b9ad5ef 568
Christopher Haster 1:24750b9ad5ef 569 static const size_t pt_len[MAX_TESTS] =
Christopher Haster 1:24750b9ad5ef 570 { 0, 16, 64, 60, 60, 60 };
Christopher Haster 1:24750b9ad5ef 571
Christopher Haster 1:24750b9ad5ef 572 static const int pt_index[MAX_TESTS] =
Christopher Haster 1:24750b9ad5ef 573 { 0, 0, 1, 1, 1, 1 };
Christopher Haster 1:24750b9ad5ef 574
Christopher Haster 1:24750b9ad5ef 575 static const unsigned char pt[MAX_TESTS][64] =
Christopher Haster 1:24750b9ad5ef 576 {
Christopher Haster 1:24750b9ad5ef 577 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
Christopher Haster 1:24750b9ad5ef 578 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
Christopher Haster 1:24750b9ad5ef 579 { 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
Christopher Haster 1:24750b9ad5ef 580 0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
Christopher Haster 1:24750b9ad5ef 581 0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
Christopher Haster 1:24750b9ad5ef 582 0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
Christopher Haster 1:24750b9ad5ef 583 0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
Christopher Haster 1:24750b9ad5ef 584 0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
Christopher Haster 1:24750b9ad5ef 585 0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
Christopher Haster 1:24750b9ad5ef 586 0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55 },
Christopher Haster 1:24750b9ad5ef 587 };
Christopher Haster 1:24750b9ad5ef 588
Christopher Haster 1:24750b9ad5ef 589 static const unsigned char ct[MAX_TESTS * 3][64] =
Christopher Haster 1:24750b9ad5ef 590 {
Christopher Haster 1:24750b9ad5ef 591 { 0x00 },
Christopher Haster 1:24750b9ad5ef 592 { 0x03, 0x88, 0xda, 0xce, 0x60, 0xb6, 0xa3, 0x92,
Christopher Haster 1:24750b9ad5ef 593 0xf3, 0x28, 0xc2, 0xb9, 0x71, 0xb2, 0xfe, 0x78 },
Christopher Haster 1:24750b9ad5ef 594 { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
Christopher Haster 1:24750b9ad5ef 595 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
Christopher Haster 1:24750b9ad5ef 596 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
Christopher Haster 1:24750b9ad5ef 597 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
Christopher Haster 1:24750b9ad5ef 598 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
Christopher Haster 1:24750b9ad5ef 599 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
Christopher Haster 1:24750b9ad5ef 600 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
Christopher Haster 1:24750b9ad5ef 601 0x3d, 0x58, 0xe0, 0x91, 0x47, 0x3f, 0x59, 0x85 },
Christopher Haster 1:24750b9ad5ef 602 { 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
Christopher Haster 1:24750b9ad5ef 603 0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
Christopher Haster 1:24750b9ad5ef 604 0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
Christopher Haster 1:24750b9ad5ef 605 0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
Christopher Haster 1:24750b9ad5ef 606 0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
Christopher Haster 1:24750b9ad5ef 607 0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
Christopher Haster 1:24750b9ad5ef 608 0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
Christopher Haster 1:24750b9ad5ef 609 0x3d, 0x58, 0xe0, 0x91 },
Christopher Haster 1:24750b9ad5ef 610 { 0x61, 0x35, 0x3b, 0x4c, 0x28, 0x06, 0x93, 0x4a,
Christopher Haster 1:24750b9ad5ef 611 0x77, 0x7f, 0xf5, 0x1f, 0xa2, 0x2a, 0x47, 0x55,
Christopher Haster 1:24750b9ad5ef 612 0x69, 0x9b, 0x2a, 0x71, 0x4f, 0xcd, 0xc6, 0xf8,
Christopher Haster 1:24750b9ad5ef 613 0x37, 0x66, 0xe5, 0xf9, 0x7b, 0x6c, 0x74, 0x23,
Christopher Haster 1:24750b9ad5ef 614 0x73, 0x80, 0x69, 0x00, 0xe4, 0x9f, 0x24, 0xb2,
Christopher Haster 1:24750b9ad5ef 615 0x2b, 0x09, 0x75, 0x44, 0xd4, 0x89, 0x6b, 0x42,
Christopher Haster 1:24750b9ad5ef 616 0x49, 0x89, 0xb5, 0xe1, 0xeb, 0xac, 0x0f, 0x07,
Christopher Haster 1:24750b9ad5ef 617 0xc2, 0x3f, 0x45, 0x98 },
Christopher Haster 1:24750b9ad5ef 618 { 0x8c, 0xe2, 0x49, 0x98, 0x62, 0x56, 0x15, 0xb6,
Christopher Haster 1:24750b9ad5ef 619 0x03, 0xa0, 0x33, 0xac, 0xa1, 0x3f, 0xb8, 0x94,
Christopher Haster 1:24750b9ad5ef 620 0xbe, 0x91, 0x12, 0xa5, 0xc3, 0xa2, 0x11, 0xa8,
Christopher Haster 1:24750b9ad5ef 621 0xba, 0x26, 0x2a, 0x3c, 0xca, 0x7e, 0x2c, 0xa7,
Christopher Haster 1:24750b9ad5ef 622 0x01, 0xe4, 0xa9, 0xa4, 0xfb, 0xa4, 0x3c, 0x90,
Christopher Haster 1:24750b9ad5ef 623 0xcc, 0xdc, 0xb2, 0x81, 0xd4, 0x8c, 0x7c, 0x6f,
Christopher Haster 1:24750b9ad5ef 624 0xd6, 0x28, 0x75, 0xd2, 0xac, 0xa4, 0x17, 0x03,
Christopher Haster 1:24750b9ad5ef 625 0x4c, 0x34, 0xae, 0xe5 },
Christopher Haster 1:24750b9ad5ef 626 { 0x00 },
Christopher Haster 1:24750b9ad5ef 627 { 0x98, 0xe7, 0x24, 0x7c, 0x07, 0xf0, 0xfe, 0x41,
Christopher Haster 1:24750b9ad5ef 628 0x1c, 0x26, 0x7e, 0x43, 0x84, 0xb0, 0xf6, 0x00 },
Christopher Haster 1:24750b9ad5ef 629 { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
Christopher Haster 1:24750b9ad5ef 630 0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
Christopher Haster 1:24750b9ad5ef 631 0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
Christopher Haster 1:24750b9ad5ef 632 0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
Christopher Haster 1:24750b9ad5ef 633 0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
Christopher Haster 1:24750b9ad5ef 634 0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
Christopher Haster 1:24750b9ad5ef 635 0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
Christopher Haster 1:24750b9ad5ef 636 0xcc, 0xda, 0x27, 0x10, 0xac, 0xad, 0xe2, 0x56 },
Christopher Haster 1:24750b9ad5ef 637 { 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
Christopher Haster 1:24750b9ad5ef 638 0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
Christopher Haster 1:24750b9ad5ef 639 0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
Christopher Haster 1:24750b9ad5ef 640 0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
Christopher Haster 1:24750b9ad5ef 641 0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
Christopher Haster 1:24750b9ad5ef 642 0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
Christopher Haster 1:24750b9ad5ef 643 0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
Christopher Haster 1:24750b9ad5ef 644 0xcc, 0xda, 0x27, 0x10 },
Christopher Haster 1:24750b9ad5ef 645 { 0x0f, 0x10, 0xf5, 0x99, 0xae, 0x14, 0xa1, 0x54,
Christopher Haster 1:24750b9ad5ef 646 0xed, 0x24, 0xb3, 0x6e, 0x25, 0x32, 0x4d, 0xb8,
Christopher Haster 1:24750b9ad5ef 647 0xc5, 0x66, 0x63, 0x2e, 0xf2, 0xbb, 0xb3, 0x4f,
Christopher Haster 1:24750b9ad5ef 648 0x83, 0x47, 0x28, 0x0f, 0xc4, 0x50, 0x70, 0x57,
Christopher Haster 1:24750b9ad5ef 649 0xfd, 0xdc, 0x29, 0xdf, 0x9a, 0x47, 0x1f, 0x75,
Christopher Haster 1:24750b9ad5ef 650 0xc6, 0x65, 0x41, 0xd4, 0xd4, 0xda, 0xd1, 0xc9,
Christopher Haster 1:24750b9ad5ef 651 0xe9, 0x3a, 0x19, 0xa5, 0x8e, 0x8b, 0x47, 0x3f,
Christopher Haster 1:24750b9ad5ef 652 0xa0, 0xf0, 0x62, 0xf7 },
Christopher Haster 1:24750b9ad5ef 653 { 0xd2, 0x7e, 0x88, 0x68, 0x1c, 0xe3, 0x24, 0x3c,
Christopher Haster 1:24750b9ad5ef 654 0x48, 0x30, 0x16, 0x5a, 0x8f, 0xdc, 0xf9, 0xff,
Christopher Haster 1:24750b9ad5ef 655 0x1d, 0xe9, 0xa1, 0xd8, 0xe6, 0xb4, 0x47, 0xef,
Christopher Haster 1:24750b9ad5ef 656 0x6e, 0xf7, 0xb7, 0x98, 0x28, 0x66, 0x6e, 0x45,
Christopher Haster 1:24750b9ad5ef 657 0x81, 0xe7, 0x90, 0x12, 0xaf, 0x34, 0xdd, 0xd9,
Christopher Haster 1:24750b9ad5ef 658 0xe2, 0xf0, 0x37, 0x58, 0x9b, 0x29, 0x2d, 0xb3,
Christopher Haster 1:24750b9ad5ef 659 0xe6, 0x7c, 0x03, 0x67, 0x45, 0xfa, 0x22, 0xe7,
Christopher Haster 1:24750b9ad5ef 660 0xe9, 0xb7, 0x37, 0x3b },
Christopher Haster 1:24750b9ad5ef 661 { 0x00 },
Christopher Haster 1:24750b9ad5ef 662 { 0xce, 0xa7, 0x40, 0x3d, 0x4d, 0x60, 0x6b, 0x6e,
Christopher Haster 1:24750b9ad5ef 663 0x07, 0x4e, 0xc5, 0xd3, 0xba, 0xf3, 0x9d, 0x18 },
Christopher Haster 1:24750b9ad5ef 664 { 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,
Christopher Haster 1:24750b9ad5ef 665 0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,
Christopher Haster 1:24750b9ad5ef 666 0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,
Christopher Haster 1:24750b9ad5ef 667 0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,
Christopher Haster 1:24750b9ad5ef 668 0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,
Christopher Haster 1:24750b9ad5ef 669 0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,
Christopher Haster 1:24750b9ad5ef 670 0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,
Christopher Haster 1:24750b9ad5ef 671 0xbc, 0xc9, 0xf6, 0x62, 0x89, 0x80, 0x15, 0xad },
Christopher Haster 1:24750b9ad5ef 672 { 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,
Christopher Haster 1:24750b9ad5ef 673 0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,
Christopher Haster 1:24750b9ad5ef 674 0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,
Christopher Haster 1:24750b9ad5ef 675 0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,
Christopher Haster 1:24750b9ad5ef 676 0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,
Christopher Haster 1:24750b9ad5ef 677 0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,
Christopher Haster 1:24750b9ad5ef 678 0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,
Christopher Haster 1:24750b9ad5ef 679 0xbc, 0xc9, 0xf6, 0x62 },
Christopher Haster 1:24750b9ad5ef 680 { 0xc3, 0x76, 0x2d, 0xf1, 0xca, 0x78, 0x7d, 0x32,
Christopher Haster 1:24750b9ad5ef 681 0xae, 0x47, 0xc1, 0x3b, 0xf1, 0x98, 0x44, 0xcb,
Christopher Haster 1:24750b9ad5ef 682 0xaf, 0x1a, 0xe1, 0x4d, 0x0b, 0x97, 0x6a, 0xfa,
Christopher Haster 1:24750b9ad5ef 683 0xc5, 0x2f, 0xf7, 0xd7, 0x9b, 0xba, 0x9d, 0xe0,
Christopher Haster 1:24750b9ad5ef 684 0xfe, 0xb5, 0x82, 0xd3, 0x39, 0x34, 0xa4, 0xf0,
Christopher Haster 1:24750b9ad5ef 685 0x95, 0x4c, 0xc2, 0x36, 0x3b, 0xc7, 0x3f, 0x78,
Christopher Haster 1:24750b9ad5ef 686 0x62, 0xac, 0x43, 0x0e, 0x64, 0xab, 0xe4, 0x99,
Christopher Haster 1:24750b9ad5ef 687 0xf4, 0x7c, 0x9b, 0x1f },
Christopher Haster 1:24750b9ad5ef 688 { 0x5a, 0x8d, 0xef, 0x2f, 0x0c, 0x9e, 0x53, 0xf1,
Christopher Haster 1:24750b9ad5ef 689 0xf7, 0x5d, 0x78, 0x53, 0x65, 0x9e, 0x2a, 0x20,
Christopher Haster 1:24750b9ad5ef 690 0xee, 0xb2, 0xb2, 0x2a, 0xaf, 0xde, 0x64, 0x19,
Christopher Haster 1:24750b9ad5ef 691 0xa0, 0x58, 0xab, 0x4f, 0x6f, 0x74, 0x6b, 0xf4,
Christopher Haster 1:24750b9ad5ef 692 0x0f, 0xc0, 0xc3, 0xb7, 0x80, 0xf2, 0x44, 0x45,
Christopher Haster 1:24750b9ad5ef 693 0x2d, 0xa3, 0xeb, 0xf1, 0xc5, 0xd8, 0x2c, 0xde,
Christopher Haster 1:24750b9ad5ef 694 0xa2, 0x41, 0x89, 0x97, 0x20, 0x0e, 0xf8, 0x2e,
Christopher Haster 1:24750b9ad5ef 695 0x44, 0xae, 0x7e, 0x3f },
Christopher Haster 1:24750b9ad5ef 696 };
Christopher Haster 1:24750b9ad5ef 697
Christopher Haster 1:24750b9ad5ef 698 static const unsigned char tag[MAX_TESTS * 3][16] =
Christopher Haster 1:24750b9ad5ef 699 {
Christopher Haster 1:24750b9ad5ef 700 { 0x58, 0xe2, 0xfc, 0xce, 0xfa, 0x7e, 0x30, 0x61,
Christopher Haster 1:24750b9ad5ef 701 0x36, 0x7f, 0x1d, 0x57, 0xa4, 0xe7, 0x45, 0x5a },
Christopher Haster 1:24750b9ad5ef 702 { 0xab, 0x6e, 0x47, 0xd4, 0x2c, 0xec, 0x13, 0xbd,
Christopher Haster 1:24750b9ad5ef 703 0xf5, 0x3a, 0x67, 0xb2, 0x12, 0x57, 0xbd, 0xdf },
Christopher Haster 1:24750b9ad5ef 704 { 0x4d, 0x5c, 0x2a, 0xf3, 0x27, 0xcd, 0x64, 0xa6,
Christopher Haster 1:24750b9ad5ef 705 0x2c, 0xf3, 0x5a, 0xbd, 0x2b, 0xa6, 0xfa, 0xb4 },
Christopher Haster 1:24750b9ad5ef 706 { 0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,
Christopher Haster 1:24750b9ad5ef 707 0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47 },
Christopher Haster 1:24750b9ad5ef 708 { 0x36, 0x12, 0xd2, 0xe7, 0x9e, 0x3b, 0x07, 0x85,
Christopher Haster 1:24750b9ad5ef 709 0x56, 0x1b, 0xe1, 0x4a, 0xac, 0xa2, 0xfc, 0xcb },
Christopher Haster 1:24750b9ad5ef 710 { 0x61, 0x9c, 0xc5, 0xae, 0xff, 0xfe, 0x0b, 0xfa,
Christopher Haster 1:24750b9ad5ef 711 0x46, 0x2a, 0xf4, 0x3c, 0x16, 0x99, 0xd0, 0x50 },
Christopher Haster 1:24750b9ad5ef 712 { 0xcd, 0x33, 0xb2, 0x8a, 0xc7, 0x73, 0xf7, 0x4b,
Christopher Haster 1:24750b9ad5ef 713 0xa0, 0x0e, 0xd1, 0xf3, 0x12, 0x57, 0x24, 0x35 },
Christopher Haster 1:24750b9ad5ef 714 { 0x2f, 0xf5, 0x8d, 0x80, 0x03, 0x39, 0x27, 0xab,
Christopher Haster 1:24750b9ad5ef 715 0x8e, 0xf4, 0xd4, 0x58, 0x75, 0x14, 0xf0, 0xfb },
Christopher Haster 1:24750b9ad5ef 716 { 0x99, 0x24, 0xa7, 0xc8, 0x58, 0x73, 0x36, 0xbf,
Christopher Haster 1:24750b9ad5ef 717 0xb1, 0x18, 0x02, 0x4d, 0xb8, 0x67, 0x4a, 0x14 },
Christopher Haster 1:24750b9ad5ef 718 { 0x25, 0x19, 0x49, 0x8e, 0x80, 0xf1, 0x47, 0x8f,
Christopher Haster 1:24750b9ad5ef 719 0x37, 0xba, 0x55, 0xbd, 0x6d, 0x27, 0x61, 0x8c },
Christopher Haster 1:24750b9ad5ef 720 { 0x65, 0xdc, 0xc5, 0x7f, 0xcf, 0x62, 0x3a, 0x24,
Christopher Haster 1:24750b9ad5ef 721 0x09, 0x4f, 0xcc, 0xa4, 0x0d, 0x35, 0x33, 0xf8 },
Christopher Haster 1:24750b9ad5ef 722 { 0xdc, 0xf5, 0x66, 0xff, 0x29, 0x1c, 0x25, 0xbb,
Christopher Haster 1:24750b9ad5ef 723 0xb8, 0x56, 0x8f, 0xc3, 0xd3, 0x76, 0xa6, 0xd9 },
Christopher Haster 1:24750b9ad5ef 724 { 0x53, 0x0f, 0x8a, 0xfb, 0xc7, 0x45, 0x36, 0xb9,
Christopher Haster 1:24750b9ad5ef 725 0xa9, 0x63, 0xb4, 0xf1, 0xc4, 0xcb, 0x73, 0x8b },
Christopher Haster 1:24750b9ad5ef 726 { 0xd0, 0xd1, 0xc8, 0xa7, 0x99, 0x99, 0x6b, 0xf0,
Christopher Haster 1:24750b9ad5ef 727 0x26, 0x5b, 0x98, 0xb5, 0xd4, 0x8a, 0xb9, 0x19 },
Christopher Haster 1:24750b9ad5ef 728 { 0xb0, 0x94, 0xda, 0xc5, 0xd9, 0x34, 0x71, 0xbd,
Christopher Haster 1:24750b9ad5ef 729 0xec, 0x1a, 0x50, 0x22, 0x70, 0xe3, 0xcc, 0x6c },
Christopher Haster 1:24750b9ad5ef 730 { 0x76, 0xfc, 0x6e, 0xce, 0x0f, 0x4e, 0x17, 0x68,
Christopher Haster 1:24750b9ad5ef 731 0xcd, 0xdf, 0x88, 0x53, 0xbb, 0x2d, 0x55, 0x1b },
Christopher Haster 1:24750b9ad5ef 732 { 0x3a, 0x33, 0x7d, 0xbf, 0x46, 0xa7, 0x92, 0xc4,
Christopher Haster 1:24750b9ad5ef 733 0x5e, 0x45, 0x49, 0x13, 0xfe, 0x2e, 0xa8, 0xf2 },
Christopher Haster 1:24750b9ad5ef 734 { 0xa4, 0x4a, 0x82, 0x66, 0xee, 0x1c, 0x8e, 0xb0,
Christopher Haster 1:24750b9ad5ef 735 0xc8, 0xb5, 0xd4, 0xcf, 0x5a, 0xe9, 0xf1, 0x9a },
Christopher Haster 1:24750b9ad5ef 736 };
Christopher Haster 1:24750b9ad5ef 737
Christopher Haster 1:24750b9ad5ef 738 int mbedtls_gcm_self_test( int verbose )
Christopher Haster 1:24750b9ad5ef 739 {
Christopher Haster 1:24750b9ad5ef 740 mbedtls_gcm_context ctx;
Christopher Haster 1:24750b9ad5ef 741 unsigned char buf[64];
Christopher Haster 1:24750b9ad5ef 742 unsigned char tag_buf[16];
Christopher Haster 1:24750b9ad5ef 743 int i, j, ret;
Christopher Haster 1:24750b9ad5ef 744 mbedtls_cipher_id_t cipher = MBEDTLS_CIPHER_ID_AES;
Christopher Haster 1:24750b9ad5ef 745
Christopher Haster 1:24750b9ad5ef 746 mbedtls_gcm_init( &ctx );
Christopher Haster 1:24750b9ad5ef 747
Christopher Haster 1:24750b9ad5ef 748 for( j = 0; j < 3; j++ )
Christopher Haster 1:24750b9ad5ef 749 {
Christopher Haster 1:24750b9ad5ef 750 int key_len = 128 + 64 * j;
Christopher Haster 1:24750b9ad5ef 751
Christopher Haster 1:24750b9ad5ef 752 for( i = 0; i < MAX_TESTS; i++ )
Christopher Haster 1:24750b9ad5ef 753 {
Christopher Haster 1:24750b9ad5ef 754 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 755 mbedtls_printf( " AES-GCM-%3d #%d (%s): ",
Christopher Haster 1:24750b9ad5ef 756 key_len, i, "enc" );
Christopher Haster 1:24750b9ad5ef 757
Christopher Haster 1:24750b9ad5ef 758 mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]], key_len );
Christopher Haster 1:24750b9ad5ef 759
Christopher Haster 1:24750b9ad5ef 760 ret = mbedtls_gcm_crypt_and_tag( &ctx, MBEDTLS_GCM_ENCRYPT,
Christopher Haster 1:24750b9ad5ef 761 pt_len[i],
Christopher Haster 1:24750b9ad5ef 762 iv[iv_index[i]], iv_len[i],
Christopher Haster 1:24750b9ad5ef 763 additional[add_index[i]], add_len[i],
Christopher Haster 1:24750b9ad5ef 764 pt[pt_index[i]], buf, 16, tag_buf );
Christopher Haster 1:24750b9ad5ef 765
Christopher Haster 1:24750b9ad5ef 766 if( ret != 0 ||
Christopher Haster 1:24750b9ad5ef 767 memcmp( buf, ct[j * 6 + i], pt_len[i] ) != 0 ||
Christopher Haster 1:24750b9ad5ef 768 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
Christopher Haster 1:24750b9ad5ef 769 {
Christopher Haster 1:24750b9ad5ef 770 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 771 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 772
Christopher Haster 1:24750b9ad5ef 773 return( 1 );
Christopher Haster 1:24750b9ad5ef 774 }
Christopher Haster 1:24750b9ad5ef 775
Christopher Haster 1:24750b9ad5ef 776 mbedtls_gcm_free( &ctx );
Christopher Haster 1:24750b9ad5ef 777
Christopher Haster 1:24750b9ad5ef 778 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 779 mbedtls_printf( "passed\n" );
Christopher Haster 1:24750b9ad5ef 780
Christopher Haster 1:24750b9ad5ef 781 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 782 mbedtls_printf( " AES-GCM-%3d #%d (%s): ",
Christopher Haster 1:24750b9ad5ef 783 key_len, i, "dec" );
Christopher Haster 1:24750b9ad5ef 784
Christopher Haster 1:24750b9ad5ef 785 mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]], key_len );
Christopher Haster 1:24750b9ad5ef 786
Christopher Haster 1:24750b9ad5ef 787 ret = mbedtls_gcm_crypt_and_tag( &ctx, MBEDTLS_GCM_DECRYPT,
Christopher Haster 1:24750b9ad5ef 788 pt_len[i],
Christopher Haster 1:24750b9ad5ef 789 iv[iv_index[i]], iv_len[i],
Christopher Haster 1:24750b9ad5ef 790 additional[add_index[i]], add_len[i],
Christopher Haster 1:24750b9ad5ef 791 ct[j * 6 + i], buf, 16, tag_buf );
Christopher Haster 1:24750b9ad5ef 792
Christopher Haster 1:24750b9ad5ef 793 if( ret != 0 ||
Christopher Haster 1:24750b9ad5ef 794 memcmp( buf, pt[pt_index[i]], pt_len[i] ) != 0 ||
Christopher Haster 1:24750b9ad5ef 795 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
Christopher Haster 1:24750b9ad5ef 796 {
Christopher Haster 1:24750b9ad5ef 797 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 798 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 799
Christopher Haster 1:24750b9ad5ef 800 return( 1 );
Christopher Haster 1:24750b9ad5ef 801 }
Christopher Haster 1:24750b9ad5ef 802
Christopher Haster 1:24750b9ad5ef 803 mbedtls_gcm_free( &ctx );
Christopher Haster 1:24750b9ad5ef 804
Christopher Haster 1:24750b9ad5ef 805 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 806 mbedtls_printf( "passed\n" );
Christopher Haster 1:24750b9ad5ef 807
Christopher Haster 1:24750b9ad5ef 808 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 809 mbedtls_printf( " AES-GCM-%3d #%d split (%s): ",
Christopher Haster 1:24750b9ad5ef 810 key_len, i, "enc" );
Christopher Haster 1:24750b9ad5ef 811
Christopher Haster 1:24750b9ad5ef 812 mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]], key_len );
Christopher Haster 1:24750b9ad5ef 813
Christopher Haster 1:24750b9ad5ef 814 ret = mbedtls_gcm_starts( &ctx, MBEDTLS_GCM_ENCRYPT,
Christopher Haster 1:24750b9ad5ef 815 iv[iv_index[i]], iv_len[i],
Christopher Haster 1:24750b9ad5ef 816 additional[add_index[i]], add_len[i] );
Christopher Haster 1:24750b9ad5ef 817 if( ret != 0 )
Christopher Haster 1:24750b9ad5ef 818 {
Christopher Haster 1:24750b9ad5ef 819 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 820 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 821
Christopher Haster 1:24750b9ad5ef 822 return( 1 );
Christopher Haster 1:24750b9ad5ef 823 }
Christopher Haster 1:24750b9ad5ef 824
Christopher Haster 1:24750b9ad5ef 825 if( pt_len[i] > 32 )
Christopher Haster 1:24750b9ad5ef 826 {
Christopher Haster 1:24750b9ad5ef 827 size_t rest_len = pt_len[i] - 32;
Christopher Haster 1:24750b9ad5ef 828 ret = mbedtls_gcm_update( &ctx, 32, pt[pt_index[i]], buf );
Christopher Haster 1:24750b9ad5ef 829 if( ret != 0 )
Christopher Haster 1:24750b9ad5ef 830 {
Christopher Haster 1:24750b9ad5ef 831 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 832 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 833
Christopher Haster 1:24750b9ad5ef 834 return( 1 );
Christopher Haster 1:24750b9ad5ef 835 }
Christopher Haster 1:24750b9ad5ef 836
Christopher Haster 1:24750b9ad5ef 837 ret = mbedtls_gcm_update( &ctx, rest_len, pt[pt_index[i]] + 32,
Christopher Haster 1:24750b9ad5ef 838 buf + 32 );
Christopher Haster 1:24750b9ad5ef 839 if( ret != 0 )
Christopher Haster 1:24750b9ad5ef 840 {
Christopher Haster 1:24750b9ad5ef 841 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 842 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 843
Christopher Haster 1:24750b9ad5ef 844 return( 1 );
Christopher Haster 1:24750b9ad5ef 845 }
Christopher Haster 1:24750b9ad5ef 846 }
Christopher Haster 1:24750b9ad5ef 847 else
Christopher Haster 1:24750b9ad5ef 848 {
Christopher Haster 1:24750b9ad5ef 849 ret = mbedtls_gcm_update( &ctx, pt_len[i], pt[pt_index[i]], buf );
Christopher Haster 1:24750b9ad5ef 850 if( ret != 0 )
Christopher Haster 1:24750b9ad5ef 851 {
Christopher Haster 1:24750b9ad5ef 852 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 853 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 854
Christopher Haster 1:24750b9ad5ef 855 return( 1 );
Christopher Haster 1:24750b9ad5ef 856 }
Christopher Haster 1:24750b9ad5ef 857 }
Christopher Haster 1:24750b9ad5ef 858
Christopher Haster 1:24750b9ad5ef 859 ret = mbedtls_gcm_finish( &ctx, tag_buf, 16 );
Christopher Haster 1:24750b9ad5ef 860 if( ret != 0 ||
Christopher Haster 1:24750b9ad5ef 861 memcmp( buf, ct[j * 6 + i], pt_len[i] ) != 0 ||
Christopher Haster 1:24750b9ad5ef 862 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
Christopher Haster 1:24750b9ad5ef 863 {
Christopher Haster 1:24750b9ad5ef 864 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 865 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 866
Christopher Haster 1:24750b9ad5ef 867 return( 1 );
Christopher Haster 1:24750b9ad5ef 868 }
Christopher Haster 1:24750b9ad5ef 869
Christopher Haster 1:24750b9ad5ef 870 mbedtls_gcm_free( &ctx );
Christopher Haster 1:24750b9ad5ef 871
Christopher Haster 1:24750b9ad5ef 872 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 873 mbedtls_printf( "passed\n" );
Christopher Haster 1:24750b9ad5ef 874
Christopher Haster 1:24750b9ad5ef 875 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 876 mbedtls_printf( " AES-GCM-%3d #%d split (%s): ",
Christopher Haster 1:24750b9ad5ef 877 key_len, i, "dec" );
Christopher Haster 1:24750b9ad5ef 878
Christopher Haster 1:24750b9ad5ef 879 mbedtls_gcm_setkey( &ctx, cipher, key[key_index[i]], key_len );
Christopher Haster 1:24750b9ad5ef 880
Christopher Haster 1:24750b9ad5ef 881 ret = mbedtls_gcm_starts( &ctx, MBEDTLS_GCM_DECRYPT,
Christopher Haster 1:24750b9ad5ef 882 iv[iv_index[i]], iv_len[i],
Christopher Haster 1:24750b9ad5ef 883 additional[add_index[i]], add_len[i] );
Christopher Haster 1:24750b9ad5ef 884 if( ret != 0 )
Christopher Haster 1:24750b9ad5ef 885 {
Christopher Haster 1:24750b9ad5ef 886 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 887 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 888
Christopher Haster 1:24750b9ad5ef 889 return( 1 );
Christopher Haster 1:24750b9ad5ef 890 }
Christopher Haster 1:24750b9ad5ef 891
Christopher Haster 1:24750b9ad5ef 892 if( pt_len[i] > 32 )
Christopher Haster 1:24750b9ad5ef 893 {
Christopher Haster 1:24750b9ad5ef 894 size_t rest_len = pt_len[i] - 32;
Christopher Haster 1:24750b9ad5ef 895 ret = mbedtls_gcm_update( &ctx, 32, ct[j * 6 + i], buf );
Christopher Haster 1:24750b9ad5ef 896 if( ret != 0 )
Christopher Haster 1:24750b9ad5ef 897 {
Christopher Haster 1:24750b9ad5ef 898 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 899 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 900
Christopher Haster 1:24750b9ad5ef 901 return( 1 );
Christopher Haster 1:24750b9ad5ef 902 }
Christopher Haster 1:24750b9ad5ef 903
Christopher Haster 1:24750b9ad5ef 904 ret = mbedtls_gcm_update( &ctx, rest_len, ct[j * 6 + i] + 32,
Christopher Haster 1:24750b9ad5ef 905 buf + 32 );
Christopher Haster 1:24750b9ad5ef 906 if( ret != 0 )
Christopher Haster 1:24750b9ad5ef 907 {
Christopher Haster 1:24750b9ad5ef 908 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 909 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 910
Christopher Haster 1:24750b9ad5ef 911 return( 1 );
Christopher Haster 1:24750b9ad5ef 912 }
Christopher Haster 1:24750b9ad5ef 913 }
Christopher Haster 1:24750b9ad5ef 914 else
Christopher Haster 1:24750b9ad5ef 915 {
Christopher Haster 1:24750b9ad5ef 916 ret = mbedtls_gcm_update( &ctx, pt_len[i], ct[j * 6 + i], buf );
Christopher Haster 1:24750b9ad5ef 917 if( ret != 0 )
Christopher Haster 1:24750b9ad5ef 918 {
Christopher Haster 1:24750b9ad5ef 919 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 920 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 921
Christopher Haster 1:24750b9ad5ef 922 return( 1 );
Christopher Haster 1:24750b9ad5ef 923 }
Christopher Haster 1:24750b9ad5ef 924 }
Christopher Haster 1:24750b9ad5ef 925
Christopher Haster 1:24750b9ad5ef 926 ret = mbedtls_gcm_finish( &ctx, tag_buf, 16 );
Christopher Haster 1:24750b9ad5ef 927 if( ret != 0 ||
Christopher Haster 1:24750b9ad5ef 928 memcmp( buf, pt[pt_index[i]], pt_len[i] ) != 0 ||
Christopher Haster 1:24750b9ad5ef 929 memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
Christopher Haster 1:24750b9ad5ef 930 {
Christopher Haster 1:24750b9ad5ef 931 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 932 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 933
Christopher Haster 1:24750b9ad5ef 934 return( 1 );
Christopher Haster 1:24750b9ad5ef 935 }
Christopher Haster 1:24750b9ad5ef 936
Christopher Haster 1:24750b9ad5ef 937 mbedtls_gcm_free( &ctx );
Christopher Haster 1:24750b9ad5ef 938
Christopher Haster 1:24750b9ad5ef 939 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 940 mbedtls_printf( "passed\n" );
Christopher Haster 1:24750b9ad5ef 941
Christopher Haster 1:24750b9ad5ef 942 }
Christopher Haster 1:24750b9ad5ef 943 }
Christopher Haster 1:24750b9ad5ef 944
Christopher Haster 1:24750b9ad5ef 945 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 946 mbedtls_printf( "\n" );
Christopher Haster 1:24750b9ad5ef 947
Christopher Haster 1:24750b9ad5ef 948 return( 0 );
Christopher Haster 1:24750b9ad5ef 949 }
Christopher Haster 1:24750b9ad5ef 950
Christopher Haster 1:24750b9ad5ef 951 #endif /* MBEDTLS_SELF_TEST && MBEDTLS_AES_C */
Christopher Haster 1:24750b9ad5ef 952
Christopher Haster 1:24750b9ad5ef 953 #endif /* MBEDTLS_GCM_C */