/* | |
* FIPS-180-1 compliant SHA-1 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) | |
*/ | |
/* | |
* The SHA-1 standard was published by NIST in 1993. | |
* | |
* http://www.itl.nist.gov/fipspubs/fip180-1.htm | |
*/ | |
#if !defined(MBEDTLS_CONFIG_FILE) | |
#include "mbedtls/config.h" | |
#else | |
#include MBEDTLS_CONFIG_FILE | |
#endif | |
#if defined(MBEDTLS_SHA1_C) | |
#include "mbedtls/sha1.h" | |
#include "mbedtls/platform_util.h" | |
#include <string.h> | |
#if defined(MBEDTLS_SELF_TEST) | |
#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 */ | |
#define SHA1_VALIDATE_RET(cond) \ | |
MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_SHA1_BAD_INPUT_DATA ) | |
#define SHA1_VALIDATE(cond) MBEDTLS_INTERNAL_VALIDATE( cond ) | |
#if !defined(MBEDTLS_SHA1_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 | |
void mbedtls_sha1_init( mbedtls_sha1_context *ctx ) | |
{ | |
SHA1_VALIDATE( ctx != NULL ); | |
memset( ctx, 0, sizeof( mbedtls_sha1_context ) ); | |
} | |
void mbedtls_sha1_free( mbedtls_sha1_context *ctx ) | |
{ | |
if( ctx == NULL ) | |
return; | |
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_sha1_context ) ); | |
} | |
void mbedtls_sha1_clone( mbedtls_sha1_context *dst, | |
const mbedtls_sha1_context *src ) | |
{ | |
SHA1_VALIDATE( dst != NULL ); | |
SHA1_VALIDATE( src != NULL ); | |
*dst = *src; | |
} | |
/* | |
* SHA-1 context setup | |
*/ | |
int mbedtls_sha1_starts_ret( mbedtls_sha1_context *ctx ) | |
{ | |
SHA1_VALIDATE_RET( ctx != NULL ); | |
ctx->total[0] = 0; | |
ctx->total[1] = 0; | |
ctx->state[0] = 0x67452301; | |
ctx->state[1] = 0xEFCDAB89; | |
ctx->state[2] = 0x98BADCFE; | |
ctx->state[3] = 0x10325476; | |
ctx->state[4] = 0xC3D2E1F0; | |
return( 0 ); | |
} | |
#if !defined(MBEDTLS_DEPRECATED_REMOVED) | |
void mbedtls_sha1_starts( mbedtls_sha1_context *ctx ) | |
{ | |
mbedtls_sha1_starts_ret( ctx ); | |
} | |
#endif | |
#if !defined(MBEDTLS_SHA1_PROCESS_ALT) | |
int mbedtls_internal_sha1_process( mbedtls_sha1_context *ctx, | |
const unsigned char data[64] ) | |
{ | |
uint32_t temp, W[16], A, B, C, D, E; | |
SHA1_VALIDATE_RET( ctx != NULL ); | |
SHA1_VALIDATE_RET( (const unsigned char *)data != NULL ); | |
GET_UINT32_BE( W[ 0], data, 0 ); | |
GET_UINT32_BE( W[ 1], data, 4 ); | |
GET_UINT32_BE( W[ 2], data, 8 ); | |
GET_UINT32_BE( W[ 3], data, 12 ); | |
GET_UINT32_BE( W[ 4], data, 16 ); | |
GET_UINT32_BE( W[ 5], data, 20 ); | |
GET_UINT32_BE( W[ 6], data, 24 ); | |
GET_UINT32_BE( W[ 7], data, 28 ); | |
GET_UINT32_BE( W[ 8], data, 32 ); | |
GET_UINT32_BE( W[ 9], data, 36 ); | |
GET_UINT32_BE( W[10], data, 40 ); | |
GET_UINT32_BE( W[11], data, 44 ); | |
GET_UINT32_BE( W[12], data, 48 ); | |
GET_UINT32_BE( W[13], data, 52 ); | |
GET_UINT32_BE( W[14], data, 56 ); | |
GET_UINT32_BE( W[15], data, 60 ); | |
#define S(x,n) (((x) << (n)) | (((x) & 0xFFFFFFFF) >> (32 - (n)))) | |
#define R(t) \ | |
( \ | |
temp = W[( (t) - 3 ) & 0x0F] ^ W[( (t) - 8 ) & 0x0F] ^ \ | |
W[( (t) - 14 ) & 0x0F] ^ W[ (t) & 0x0F], \ | |
( W[(t) & 0x0F] = S(temp,1) ) \ | |
) | |
#define P(a,b,c,d,e,x) \ | |
do \ | |
{ \ | |
(e) += S((a),5) + F((b),(c),(d)) + K + (x); \ | |
(b) = S((b),30); \ | |
} while( 0 ) | |
A = ctx->state[0]; | |
B = ctx->state[1]; | |
C = ctx->state[2]; | |
D = ctx->state[3]; | |
E = ctx->state[4]; | |
#define F(x,y,z) ((z) ^ ((x) & ((y) ^ (z)))) | |
#define K 0x5A827999 | |
P( A, B, C, D, E, W[0] ); | |
P( E, A, B, C, D, W[1] ); | |
P( D, E, A, B, C, W[2] ); | |
P( C, D, E, A, B, W[3] ); | |
P( B, C, D, E, A, W[4] ); | |
P( A, B, C, D, E, W[5] ); | |
P( E, A, B, C, D, W[6] ); | |
P( D, E, A, B, C, W[7] ); | |
P( C, D, E, A, B, W[8] ); | |
P( B, C, D, E, A, W[9] ); | |
P( A, B, C, D, E, W[10] ); | |
P( E, A, B, C, D, W[11] ); | |
P( D, E, A, B, C, W[12] ); | |
P( C, D, E, A, B, W[13] ); | |
P( B, C, D, E, A, W[14] ); | |
P( A, B, C, D, E, W[15] ); | |
P( E, A, B, C, D, R(16) ); | |
P( D, E, A, B, C, R(17) ); | |
P( C, D, E, A, B, R(18) ); | |
P( B, C, D, E, A, R(19) ); | |
#undef K | |
#undef F | |
#define F(x,y,z) ((x) ^ (y) ^ (z)) | |
#define K 0x6ED9EBA1 | |
P( A, B, C, D, E, R(20) ); | |
P( E, A, B, C, D, R(21) ); | |
P( D, E, A, B, C, R(22) ); | |
P( C, D, E, A, B, R(23) ); | |
P( B, C, D, E, A, R(24) ); | |
P( A, B, C, D, E, R(25) ); | |
P( E, A, B, C, D, R(26) ); | |
P( D, E, A, B, C, R(27) ); | |
P( C, D, E, A, B, R(28) ); | |
P( B, C, D, E, A, R(29) ); | |
P( A, B, C, D, E, R(30) ); | |
P( E, A, B, C, D, R(31) ); | |
P( D, E, A, B, C, R(32) ); | |
P( C, D, E, A, B, R(33) ); | |
P( B, C, D, E, A, R(34) ); | |
P( A, B, C, D, E, R(35) ); | |
P( E, A, B, C, D, R(36) ); | |
P( D, E, A, B, C, R(37) ); | |
P( C, D, E, A, B, R(38) ); | |
P( B, C, D, E, A, R(39) ); | |
#undef K | |
#undef F | |
#define F(x,y,z) (((x) & (y)) | ((z) & ((x) | (y)))) | |
#define K 0x8F1BBCDC | |
P( A, B, C, D, E, R(40) ); | |
P( E, A, B, C, D, R(41) ); | |
P( D, E, A, B, C, R(42) ); | |
P( C, D, E, A, B, R(43) ); | |
P( B, C, D, E, A, R(44) ); | |
P( A, B, C, D, E, R(45) ); | |
P( E, A, B, C, D, R(46) ); | |
P( D, E, A, B, C, R(47) ); | |
P( C, D, E, A, B, R(48) ); | |
P( B, C, D, E, A, R(49) ); | |
P( A, B, C, D, E, R(50) ); | |
P( E, A, B, C, D, R(51) ); | |
P( D, E, A, B, C, R(52) ); | |
P( C, D, E, A, B, R(53) ); | |
P( B, C, D, E, A, R(54) ); | |
P( A, B, C, D, E, R(55) ); | |
P( E, A, B, C, D, R(56) ); | |
P( D, E, A, B, C, R(57) ); | |
P( C, D, E, A, B, R(58) ); | |
P( B, C, D, E, A, R(59) ); | |
#undef K | |
#undef F | |
#define F(x,y,z) ((x) ^ (y) ^ (z)) | |
#define K 0xCA62C1D6 | |
P( A, B, C, D, E, R(60) ); | |
P( E, A, B, C, D, R(61) ); | |
P( D, E, A, B, C, R(62) ); | |
P( C, D, E, A, B, R(63) ); | |
P( B, C, D, E, A, R(64) ); | |
P( A, B, C, D, E, R(65) ); | |
P( E, A, B, C, D, R(66) ); | |
P( D, E, A, B, C, R(67) ); | |
P( C, D, E, A, B, R(68) ); | |
P( B, C, D, E, A, R(69) ); | |
P( A, B, C, D, E, R(70) ); | |
P( E, A, B, C, D, R(71) ); | |
P( D, E, A, B, C, R(72) ); | |
P( C, D, E, A, B, R(73) ); | |
P( B, C, D, E, A, R(74) ); | |
P( A, B, C, D, E, R(75) ); | |
P( E, A, B, C, D, R(76) ); | |
P( D, E, A, B, C, R(77) ); | |
P( C, D, E, A, B, R(78) ); | |
P( B, C, D, E, A, R(79) ); | |
#undef K | |
#undef F | |
ctx->state[0] += A; | |
ctx->state[1] += B; | |
ctx->state[2] += C; | |
ctx->state[3] += D; | |
ctx->state[4] += E; | |
return( 0 ); | |
} | |
#if !defined(MBEDTLS_DEPRECATED_REMOVED) | |
void mbedtls_sha1_process( mbedtls_sha1_context *ctx, | |
const unsigned char data[64] ) | |
{ | |
mbedtls_internal_sha1_process( ctx, data ); | |
} | |
#endif | |
#endif /* !MBEDTLS_SHA1_PROCESS_ALT */ | |
/* | |
* SHA-1 process buffer | |
*/ | |
int mbedtls_sha1_update_ret( mbedtls_sha1_context *ctx, | |
const unsigned char *input, | |
size_t ilen ) | |
{ | |
int ret; | |
size_t fill; | |
uint32_t left; | |
SHA1_VALIDATE_RET( ctx != NULL ); | |
SHA1_VALIDATE_RET( ilen == 0 || input != NULL ); | |
if( ilen == 0 ) | |
return( 0 ); | |
left = ctx->total[0] & 0x3F; | |
fill = 64 - left; | |
ctx->total[0] += (uint32_t) ilen; | |
ctx->total[0] &= 0xFFFFFFFF; | |
if( ctx->total[0] < (uint32_t) ilen ) | |
ctx->total[1]++; | |
if( left && ilen >= fill ) | |
{ | |
memcpy( (void *) (ctx->buffer + left), input, fill ); | |
if( ( ret = mbedtls_internal_sha1_process( ctx, ctx->buffer ) ) != 0 ) | |
return( ret ); | |
input += fill; | |
ilen -= fill; | |
left = 0; | |
} | |
while( ilen >= 64 ) | |
{ | |
if( ( ret = mbedtls_internal_sha1_process( ctx, input ) ) != 0 ) | |
return( ret ); | |
input += 64; | |
ilen -= 64; | |
} | |
if( ilen > 0 ) | |
memcpy( (void *) (ctx->buffer + left), input, ilen ); | |
return( 0 ); | |
} | |
#if !defined(MBEDTLS_DEPRECATED_REMOVED) | |
void mbedtls_sha1_update( mbedtls_sha1_context *ctx, | |
const unsigned char *input, | |
size_t ilen ) | |
{ | |
mbedtls_sha1_update_ret( ctx, input, ilen ); | |
} | |
#endif | |
/* | |
* SHA-1 final digest | |
*/ | |
int mbedtls_sha1_finish_ret( mbedtls_sha1_context *ctx, | |
unsigned char output[20] ) | |
{ | |
int ret; | |
uint32_t used; | |
uint32_t high, low; | |
SHA1_VALIDATE_RET( ctx != NULL ); | |
SHA1_VALIDATE_RET( (unsigned char *)output != NULL ); | |
/* | |
* Add padding: 0x80 then 0x00 until 8 bytes remain for the length | |
*/ | |
used = ctx->total[0] & 0x3F; | |
ctx->buffer[used++] = 0x80; | |
if( used <= 56 ) | |
{ | |
/* Enough room for padding + length in current block */ | |
memset( ctx->buffer + used, 0, 56 - used ); | |
} | |
else | |
{ | |
/* We'll need an extra block */ | |
memset( ctx->buffer + used, 0, 64 - used ); | |
if( ( ret = mbedtls_internal_sha1_process( ctx, ctx->buffer ) ) != 0 ) | |
return( ret ); | |
memset( ctx->buffer, 0, 56 ); | |
} | |
/* | |
* Add message length | |
*/ | |
high = ( ctx->total[0] >> 29 ) | |
| ( ctx->total[1] << 3 ); | |
low = ( ctx->total[0] << 3 ); | |
PUT_UINT32_BE( high, ctx->buffer, 56 ); | |
PUT_UINT32_BE( low, ctx->buffer, 60 ); | |
if( ( ret = mbedtls_internal_sha1_process( ctx, ctx->buffer ) ) != 0 ) | |
return( ret ); | |
/* | |
* 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 ); | |
return( 0 ); | |
} | |
#if !defined(MBEDTLS_DEPRECATED_REMOVED) | |
void mbedtls_sha1_finish( mbedtls_sha1_context *ctx, | |
unsigned char output[20] ) | |
{ | |
mbedtls_sha1_finish_ret( ctx, output ); | |
} | |
#endif | |
#endif /* !MBEDTLS_SHA1_ALT */ | |
/* | |
* output = SHA-1( input buffer ) | |
*/ | |
int mbedtls_sha1_ret( const unsigned char *input, | |
size_t ilen, | |
unsigned char output[20] ) | |
{ | |
int ret; | |
mbedtls_sha1_context ctx; | |
SHA1_VALIDATE_RET( ilen == 0 || input != NULL ); | |
SHA1_VALIDATE_RET( (unsigned char *)output != NULL ); | |
mbedtls_sha1_init( &ctx ); | |
if( ( ret = mbedtls_sha1_starts_ret( &ctx ) ) != 0 ) | |
goto exit; | |
if( ( ret = mbedtls_sha1_update_ret( &ctx, input, ilen ) ) != 0 ) | |
goto exit; | |
if( ( ret = mbedtls_sha1_finish_ret( &ctx, output ) ) != 0 ) | |
goto exit; | |
exit: | |
mbedtls_sha1_free( &ctx ); | |
return( ret ); | |
} | |
#if !defined(MBEDTLS_DEPRECATED_REMOVED) | |
void mbedtls_sha1( const unsigned char *input, | |
size_t ilen, | |
unsigned char output[20] ) | |
{ | |
mbedtls_sha1_ret( input, ilen, output ); | |
} | |
#endif | |
#if defined(MBEDTLS_SELF_TEST) | |
/* | |
* FIPS-180-1 test vectors | |
*/ | |
static const unsigned char sha1_test_buf[3][57] = | |
{ | |
{ "abc" }, | |
{ "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" }, | |
{ "" } | |
}; | |
static const size_t sha1_test_buflen[3] = | |
{ | |
3, 56, 1000 | |
}; | |
static const unsigned char sha1_test_sum[3][20] = | |
{ | |
{ 0xA9, 0x99, 0x3E, 0x36, 0x47, 0x06, 0x81, 0x6A, 0xBA, 0x3E, | |
0x25, 0x71, 0x78, 0x50, 0xC2, 0x6C, 0x9C, 0xD0, 0xD8, 0x9D }, | |
{ 0x84, 0x98, 0x3E, 0x44, 0x1C, 0x3B, 0xD2, 0x6E, 0xBA, 0xAE, | |
0x4A, 0xA1, 0xF9, 0x51, 0x29, 0xE5, 0xE5, 0x46, 0x70, 0xF1 }, | |
{ 0x34, 0xAA, 0x97, 0x3C, 0xD4, 0xC4, 0xDA, 0xA4, 0xF6, 0x1E, | |
0xEB, 0x2B, 0xDB, 0xAD, 0x27, 0x31, 0x65, 0x34, 0x01, 0x6F } | |
}; | |
/* | |
* Checkup routine | |
*/ | |
int mbedtls_sha1_self_test( int verbose ) | |
{ | |
int i, j, buflen, ret = 0; | |
unsigned char buf[1024]; | |
unsigned char sha1sum[20]; | |
mbedtls_sha1_context ctx; | |
mbedtls_sha1_init( &ctx ); | |
/* | |
* SHA-1 | |
*/ | |
for( i = 0; i < 3; i++ ) | |
{ | |
if( verbose != 0 ) | |
mbedtls_printf( " SHA-1 test #%d: ", i + 1 ); | |
if( ( ret = mbedtls_sha1_starts_ret( &ctx ) ) != 0 ) | |
goto fail; | |
if( i == 2 ) | |
{ | |
memset( buf, 'a', buflen = 1000 ); | |
for( j = 0; j < 1000; j++ ) | |
{ | |
ret = mbedtls_sha1_update_ret( &ctx, buf, buflen ); | |
if( ret != 0 ) | |
goto fail; | |
} | |
} | |
else | |
{ | |
ret = mbedtls_sha1_update_ret( &ctx, sha1_test_buf[i], | |
sha1_test_buflen[i] ); | |
if( ret != 0 ) | |
goto fail; | |
} | |
if( ( ret = mbedtls_sha1_finish_ret( &ctx, sha1sum ) ) != 0 ) | |
goto fail; | |
if( memcmp( sha1sum, sha1_test_sum[i], 20 ) != 0 ) | |
{ | |
ret = 1; | |
goto fail; | |
} | |
if( verbose != 0 ) | |
mbedtls_printf( "passed\n" ); | |
} | |
if( verbose != 0 ) | |
mbedtls_printf( "\n" ); | |
goto exit; | |
fail: | |
if( verbose != 0 ) | |
mbedtls_printf( "failed\n" ); | |
exit: | |
mbedtls_sha1_free( &ctx ); | |
return( ret ); | |
} | |
#endif /* MBEDTLS_SELF_TEST */ | |
#endif /* MBEDTLS_SHA1_C */ |