diff options
Diffstat (limited to 'thirdparty/mbedtls/library/sha256.c')
| -rw-r--r-- | thirdparty/mbedtls/library/sha256.c | 182 |
1 files changed, 78 insertions, 104 deletions
diff --git a/thirdparty/mbedtls/library/sha256.c b/thirdparty/mbedtls/library/sha256.c index 5169584b68..db675efd1b 100644 --- a/thirdparty/mbedtls/library/sha256.c +++ b/thirdparty/mbedtls/library/sha256.c @@ -2,13 +2,7 @@ * FIPS-180-2 compliant SHA-256 implementation * * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later - * - * This file is provided under the Apache License 2.0, or the - * GNU General Public License v2.0 or later. - * - * ********** - * Apache License 2.0: + * 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. @@ -21,27 +15,6 @@ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. - * - * ********** - * - * ********** - * GNU General Public License v2.0 or later: - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - * - * ********** */ /* * The SHA-256 Secure Hash Standard was published by NIST in 2002. @@ -49,16 +22,13 @@ * http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf */ -#if !defined(MBEDTLS_CONFIG_FILE) -#include "mbedtls/config.h" -#else -#include MBEDTLS_CONFIG_FILE -#endif +#include "common.h" #if defined(MBEDTLS_SHA256_C) #include "mbedtls/sha256.h" #include "mbedtls/platform_util.h" +#include "mbedtls/error.h" #include <string.h> @@ -80,29 +50,6 @@ #if !defined(MBEDTLS_SHA256_ALT) -/* - * 32-bit integer manipulation macros (big endian) - */ -#ifndef GET_UINT32_BE -#define GET_UINT32_BE(n,b,i) \ -do { \ - (n) = ( (uint32_t) (b)[(i) ] << 24 ) \ - | ( (uint32_t) (b)[(i) + 1] << 16 ) \ - | ( (uint32_t) (b)[(i) + 2] << 8 ) \ - | ( (uint32_t) (b)[(i) + 3] ); \ -} while( 0 ) -#endif - -#ifndef PUT_UINT32_BE -#define PUT_UINT32_BE(n,b,i) \ -do { \ - (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) ); \ -} while( 0 ) -#endif - void mbedtls_sha256_init( mbedtls_sha256_context *ctx ) { SHA256_VALIDATE( ctx != NULL ); @@ -209,77 +156,104 @@ static const uint32_t K[] = #define F0(x,y,z) (((x) & (y)) | ((z) & ((x) | (y)))) #define F1(x,y,z) ((z) ^ ((x) & ((y) ^ (z)))) -#define R(t) \ - ( \ - W[t] = S1(W[(t) - 2]) + W[(t) - 7] + \ - S0(W[(t) - 15]) + W[(t) - 16] \ +#define R(t) \ + ( \ + local.W[t] = S1(local.W[(t) - 2]) + local.W[(t) - 7] + \ + S0(local.W[(t) - 15]) + local.W[(t) - 16] \ ) -#define P(a,b,c,d,e,f,g,h,x,K) \ - do \ - { \ - temp1 = (h) + S3(e) + F1((e),(f),(g)) + (K) + (x); \ - temp2 = S2(a) + F0((a),(b),(c)); \ - (d) += temp1; (h) = temp1 + temp2; \ +#define P(a,b,c,d,e,f,g,h,x,K) \ + do \ + { \ + local.temp1 = (h) + S3(e) + F1((e),(f),(g)) + (K) + (x); \ + local.temp2 = S2(a) + F0((a),(b),(c)); \ + (d) += local.temp1; (h) = local.temp1 + local.temp2; \ } while( 0 ) int mbedtls_internal_sha256_process( mbedtls_sha256_context *ctx, const unsigned char data[64] ) { - uint32_t temp1, temp2, W[64]; - uint32_t A[8]; + struct + { + uint32_t temp1, temp2, W[64]; + uint32_t A[8]; + } local; + unsigned int i; SHA256_VALIDATE_RET( ctx != NULL ); SHA256_VALIDATE_RET( (const unsigned char *)data != NULL ); for( i = 0; i < 8; i++ ) - A[i] = ctx->state[i]; + local.A[i] = ctx->state[i]; #if defined(MBEDTLS_SHA256_SMALLER) for( i = 0; i < 64; i++ ) { if( i < 16 ) - GET_UINT32_BE( W[i], data, 4 * i ); + local.W[i] = MBEDTLS_GET_UINT32_BE( data, 4 * i ); else R( i ); - P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], W[i], K[i] ); + P( local.A[0], local.A[1], local.A[2], local.A[3], local.A[4], + local.A[5], local.A[6], local.A[7], local.W[i], K[i] ); - temp1 = A[7]; A[7] = A[6]; A[6] = A[5]; A[5] = A[4]; A[4] = A[3]; - A[3] = A[2]; A[2] = A[1]; A[1] = A[0]; A[0] = temp1; + local.temp1 = local.A[7]; local.A[7] = local.A[6]; + local.A[6] = local.A[5]; local.A[5] = local.A[4]; + local.A[4] = local.A[3]; local.A[3] = local.A[2]; + local.A[2] = local.A[1]; local.A[1] = local.A[0]; + local.A[0] = local.temp1; } #else /* MBEDTLS_SHA256_SMALLER */ for( i = 0; i < 16; i++ ) - GET_UINT32_BE( W[i], data, 4 * i ); + local.W[i] = MBEDTLS_GET_UINT32_BE( data, 4 * i ); for( i = 0; i < 16; i += 8 ) { - P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], W[i+0], K[i+0] ); - P( A[7], A[0], A[1], A[2], A[3], A[4], A[5], A[6], W[i+1], K[i+1] ); - P( A[6], A[7], A[0], A[1], A[2], A[3], A[4], A[5], W[i+2], K[i+2] ); - P( A[5], A[6], A[7], A[0], A[1], A[2], A[3], A[4], W[i+3], K[i+3] ); - P( A[4], A[5], A[6], A[7], A[0], A[1], A[2], A[3], W[i+4], K[i+4] ); - P( A[3], A[4], A[5], A[6], A[7], A[0], A[1], A[2], W[i+5], K[i+5] ); - P( A[2], A[3], A[4], A[5], A[6], A[7], A[0], A[1], W[i+6], K[i+6] ); - P( A[1], A[2], A[3], A[4], A[5], A[6], A[7], A[0], W[i+7], K[i+7] ); + P( local.A[0], local.A[1], local.A[2], local.A[3], local.A[4], + local.A[5], local.A[6], local.A[7], local.W[i+0], K[i+0] ); + P( local.A[7], local.A[0], local.A[1], local.A[2], local.A[3], + local.A[4], local.A[5], local.A[6], local.W[i+1], K[i+1] ); + P( local.A[6], local.A[7], local.A[0], local.A[1], local.A[2], + local.A[3], local.A[4], local.A[5], local.W[i+2], K[i+2] ); + P( local.A[5], local.A[6], local.A[7], local.A[0], local.A[1], + local.A[2], local.A[3], local.A[4], local.W[i+3], K[i+3] ); + P( local.A[4], local.A[5], local.A[6], local.A[7], local.A[0], + local.A[1], local.A[2], local.A[3], local.W[i+4], K[i+4] ); + P( local.A[3], local.A[4], local.A[5], local.A[6], local.A[7], + local.A[0], local.A[1], local.A[2], local.W[i+5], K[i+5] ); + P( local.A[2], local.A[3], local.A[4], local.A[5], local.A[6], + local.A[7], local.A[0], local.A[1], local.W[i+6], K[i+6] ); + P( local.A[1], local.A[2], local.A[3], local.A[4], local.A[5], + local.A[6], local.A[7], local.A[0], local.W[i+7], K[i+7] ); } for( i = 16; i < 64; i += 8 ) { - P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], R(i+0), K[i+0] ); - P( A[7], A[0], A[1], A[2], A[3], A[4], A[5], A[6], R(i+1), K[i+1] ); - P( A[6], A[7], A[0], A[1], A[2], A[3], A[4], A[5], R(i+2), K[i+2] ); - P( A[5], A[6], A[7], A[0], A[1], A[2], A[3], A[4], R(i+3), K[i+3] ); - P( A[4], A[5], A[6], A[7], A[0], A[1], A[2], A[3], R(i+4), K[i+4] ); - P( A[3], A[4], A[5], A[6], A[7], A[0], A[1], A[2], R(i+5), K[i+5] ); - P( A[2], A[3], A[4], A[5], A[6], A[7], A[0], A[1], R(i+6), K[i+6] ); - P( A[1], A[2], A[3], A[4], A[5], A[6], A[7], A[0], R(i+7), K[i+7] ); + P( local.A[0], local.A[1], local.A[2], local.A[3], local.A[4], + local.A[5], local.A[6], local.A[7], R(i+0), K[i+0] ); + P( local.A[7], local.A[0], local.A[1], local.A[2], local.A[3], + local.A[4], local.A[5], local.A[6], R(i+1), K[i+1] ); + P( local.A[6], local.A[7], local.A[0], local.A[1], local.A[2], + local.A[3], local.A[4], local.A[5], R(i+2), K[i+2] ); + P( local.A[5], local.A[6], local.A[7], local.A[0], local.A[1], + local.A[2], local.A[3], local.A[4], R(i+3), K[i+3] ); + P( local.A[4], local.A[5], local.A[6], local.A[7], local.A[0], + local.A[1], local.A[2], local.A[3], R(i+4), K[i+4] ); + P( local.A[3], local.A[4], local.A[5], local.A[6], local.A[7], + local.A[0], local.A[1], local.A[2], R(i+5), K[i+5] ); + P( local.A[2], local.A[3], local.A[4], local.A[5], local.A[6], + local.A[7], local.A[0], local.A[1], R(i+6), K[i+6] ); + P( local.A[1], local.A[2], local.A[3], local.A[4], local.A[5], + local.A[6], local.A[7], local.A[0], R(i+7), K[i+7] ); } #endif /* MBEDTLS_SHA256_SMALLER */ for( i = 0; i < 8; i++ ) - ctx->state[i] += A[i]; + ctx->state[i] += local.A[i]; + + /* Zeroise buffers and variables to clear sensitive data from memory. */ + mbedtls_platform_zeroize( &local, sizeof( local ) ); return( 0 ); } @@ -300,7 +274,7 @@ int mbedtls_sha256_update_ret( mbedtls_sha256_context *ctx, const unsigned char *input, size_t ilen ) { - int ret; + int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; size_t fill; uint32_t left; @@ -361,7 +335,7 @@ void mbedtls_sha256_update( mbedtls_sha256_context *ctx, int mbedtls_sha256_finish_ret( mbedtls_sha256_context *ctx, unsigned char output[32] ) { - int ret; + int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; uint32_t used; uint32_t high, low; @@ -398,8 +372,8 @@ int mbedtls_sha256_finish_ret( mbedtls_sha256_context *ctx, | ( ctx->total[1] << 3 ); low = ( ctx->total[0] << 3 ); - PUT_UINT32_BE( high, ctx->buffer, 56 ); - PUT_UINT32_BE( low, ctx->buffer, 60 ); + MBEDTLS_PUT_UINT32_BE( high, ctx->buffer, 56 ); + MBEDTLS_PUT_UINT32_BE( low, ctx->buffer, 60 ); if( ( ret = mbedtls_internal_sha256_process( ctx, ctx->buffer ) ) != 0 ) return( ret ); @@ -407,16 +381,16 @@ int mbedtls_sha256_finish_ret( mbedtls_sha256_context *ctx, /* * Output final state */ - PUT_UINT32_BE( ctx->state[0], output, 0 ); - PUT_UINT32_BE( ctx->state[1], output, 4 ); - PUT_UINT32_BE( ctx->state[2], output, 8 ); - PUT_UINT32_BE( ctx->state[3], output, 12 ); - PUT_UINT32_BE( ctx->state[4], output, 16 ); - PUT_UINT32_BE( ctx->state[5], output, 20 ); - PUT_UINT32_BE( ctx->state[6], output, 24 ); + MBEDTLS_PUT_UINT32_BE( ctx->state[0], output, 0 ); + MBEDTLS_PUT_UINT32_BE( ctx->state[1], output, 4 ); + MBEDTLS_PUT_UINT32_BE( ctx->state[2], output, 8 ); + MBEDTLS_PUT_UINT32_BE( ctx->state[3], output, 12 ); + MBEDTLS_PUT_UINT32_BE( ctx->state[4], output, 16 ); + MBEDTLS_PUT_UINT32_BE( ctx->state[5], output, 20 ); + MBEDTLS_PUT_UINT32_BE( ctx->state[6], output, 24 ); if( ctx->is224 == 0 ) - PUT_UINT32_BE( ctx->state[7], output, 28 ); + MBEDTLS_PUT_UINT32_BE( ctx->state[7], output, 28 ); return( 0 ); } @@ -439,7 +413,7 @@ int mbedtls_sha256_ret( const unsigned char *input, unsigned char output[32], int is224 ) { - int ret; + int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; mbedtls_sha256_context ctx; SHA256_VALIDATE_RET( is224 == 0 || is224 == 1 ); |