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