496 lines
13 KiB
C
496 lines
13 KiB
C
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/*
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* FIPS-180-1 compliant SHA-1 implementation
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*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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/*
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* The SHA-1 standard was published by NIST in 1993.
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*
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* http://www.itl.nist.gov/fipspubs/fip180-1.htm
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*/
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "mbedtls/config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(MBEDTLS_SHA1_C)
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#include "mbedtls/sha1.h"
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#include <string.h>
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#if defined(MBEDTLS_SELF_TEST)
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#include <stdio.h>
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#define mbedtls_printf printf
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#endif /* MBEDTLS_PLATFORM_C */
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#endif /* MBEDTLS_SELF_TEST */
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#if !defined(MBEDTLS_SHA1_ALT)
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/* Implementation that should never be optimized out by the compiler */
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static void mbedtls_zeroize( void *v, size_t n ) {
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volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
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}
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/*
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* 32-bit integer manipulation macros (big endian)
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*/
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#ifndef GET_UINT32_BE
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#define GET_UINT32_BE(n,b,i) \
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{ \
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(n) = ( (uint32_t) (b)[(i) ] << 24 ) \
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| ( (uint32_t) (b)[(i) + 1] << 16 ) \
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| ( (uint32_t) (b)[(i) + 2] << 8 ) \
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| ( (uint32_t) (b)[(i) + 3] ); \
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}
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#endif
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#ifndef PUT_UINT32_BE
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#define PUT_UINT32_BE(n,b,i) \
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{ \
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(b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
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(b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
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(b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
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(b)[(i) + 3] = (unsigned char) ( (n) ); \
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}
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#endif
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void mbedtls_sha1_init( mbedtls_sha1_context *ctx )
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{
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memset( ctx, 0, sizeof( mbedtls_sha1_context ) );
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}
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void mbedtls_sha1_free( mbedtls_sha1_context *ctx )
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{
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if( ctx == NULL )
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return;
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mbedtls_zeroize( ctx, sizeof( mbedtls_sha1_context ) );
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}
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void mbedtls_sha1_clone( mbedtls_sha1_context *dst,
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const mbedtls_sha1_context *src )
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{
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*dst = *src;
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}
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/*
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* SHA-1 context setup
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*/
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int mbedtls_sha1_starts_ret( mbedtls_sha1_context *ctx )
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{
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ctx->total[0] = 0;
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ctx->total[1] = 0;
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ctx->state[0] = 0x67452301;
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ctx->state[1] = 0xEFCDAB89;
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ctx->state[2] = 0x98BADCFE;
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ctx->state[3] = 0x10325476;
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ctx->state[4] = 0xC3D2E1F0;
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return( 0 );
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}
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#if !defined(MBEDTLS_SHA1_PROCESS_ALT)
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int mbedtls_internal_sha1_process( mbedtls_sha1_context *ctx,
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const unsigned char data[64] )
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{
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uint32_t temp, W[16], A, B, C, D, E;
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GET_UINT32_BE( W[ 0], data, 0 );
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GET_UINT32_BE( W[ 1], data, 4 );
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GET_UINT32_BE( W[ 2], data, 8 );
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GET_UINT32_BE( W[ 3], data, 12 );
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GET_UINT32_BE( W[ 4], data, 16 );
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GET_UINT32_BE( W[ 5], data, 20 );
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GET_UINT32_BE( W[ 6], data, 24 );
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GET_UINT32_BE( W[ 7], data, 28 );
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GET_UINT32_BE( W[ 8], data, 32 );
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GET_UINT32_BE( W[ 9], data, 36 );
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GET_UINT32_BE( W[10], data, 40 );
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GET_UINT32_BE( W[11], data, 44 );
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GET_UINT32_BE( W[12], data, 48 );
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GET_UINT32_BE( W[13], data, 52 );
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GET_UINT32_BE( W[14], data, 56 );
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GET_UINT32_BE( W[15], data, 60 );
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#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
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#define R(t) \
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( \
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temp = W[( t - 3 ) & 0x0F] ^ W[( t - 8 ) & 0x0F] ^ \
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W[( t - 14 ) & 0x0F] ^ W[ t & 0x0F], \
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( W[t & 0x0F] = S(temp,1) ) \
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)
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#define P(a,b,c,d,e,x) \
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{ \
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e += S(a,5) + F(b,c,d) + K + x; b = S(b,30); \
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}
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A = ctx->state[0];
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B = ctx->state[1];
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C = ctx->state[2];
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D = ctx->state[3];
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E = ctx->state[4];
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#define F(x,y,z) (z ^ (x & (y ^ z)))
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#define K 0x5A827999
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P( A, B, C, D, E, W[0] );
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P( E, A, B, C, D, W[1] );
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P( D, E, A, B, C, W[2] );
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P( C, D, E, A, B, W[3] );
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P( B, C, D, E, A, W[4] );
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P( A, B, C, D, E, W[5] );
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P( E, A, B, C, D, W[6] );
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P( D, E, A, B, C, W[7] );
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P( C, D, E, A, B, W[8] );
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P( B, C, D, E, A, W[9] );
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P( A, B, C, D, E, W[10] );
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P( E, A, B, C, D, W[11] );
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P( D, E, A, B, C, W[12] );
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P( C, D, E, A, B, W[13] );
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P( B, C, D, E, A, W[14] );
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P( A, B, C, D, E, W[15] );
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P( E, A, B, C, D, R(16) );
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P( D, E, A, B, C, R(17) );
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P( C, D, E, A, B, R(18) );
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P( B, C, D, E, A, R(19) );
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#undef K
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#undef F
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#define F(x,y,z) (x ^ y ^ z)
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#define K 0x6ED9EBA1
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P( A, B, C, D, E, R(20) );
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P( E, A, B, C, D, R(21) );
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P( D, E, A, B, C, R(22) );
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P( C, D, E, A, B, R(23) );
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P( B, C, D, E, A, R(24) );
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P( A, B, C, D, E, R(25) );
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P( E, A, B, C, D, R(26) );
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P( D, E, A, B, C, R(27) );
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P( C, D, E, A, B, R(28) );
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P( B, C, D, E, A, R(29) );
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P( A, B, C, D, E, R(30) );
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P( E, A, B, C, D, R(31) );
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P( D, E, A, B, C, R(32) );
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P( C, D, E, A, B, R(33) );
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P( B, C, D, E, A, R(34) );
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P( A, B, C, D, E, R(35) );
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P( E, A, B, C, D, R(36) );
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P( D, E, A, B, C, R(37) );
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P( C, D, E, A, B, R(38) );
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P( B, C, D, E, A, R(39) );
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#undef K
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#undef F
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#define F(x,y,z) ((x & y) | (z & (x | y)))
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#define K 0x8F1BBCDC
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P( A, B, C, D, E, R(40) );
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P( E, A, B, C, D, R(41) );
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P( D, E, A, B, C, R(42) );
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P( C, D, E, A, B, R(43) );
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P( B, C, D, E, A, R(44) );
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P( A, B, C, D, E, R(45) );
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P( E, A, B, C, D, R(46) );
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P( D, E, A, B, C, R(47) );
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P( C, D, E, A, B, R(48) );
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P( B, C, D, E, A, R(49) );
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P( A, B, C, D, E, R(50) );
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P( E, A, B, C, D, R(51) );
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P( D, E, A, B, C, R(52) );
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P( C, D, E, A, B, R(53) );
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P( B, C, D, E, A, R(54) );
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P( A, B, C, D, E, R(55) );
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P( E, A, B, C, D, R(56) );
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P( D, E, A, B, C, R(57) );
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P( C, D, E, A, B, R(58) );
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P( B, C, D, E, A, R(59) );
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#undef K
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#undef F
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#define F(x,y,z) (x ^ y ^ z)
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#define K 0xCA62C1D6
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P( A, B, C, D, E, R(60) );
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P( E, A, B, C, D, R(61) );
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P( D, E, A, B, C, R(62) );
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P( C, D, E, A, B, R(63) );
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P( B, C, D, E, A, R(64) );
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P( A, B, C, D, E, R(65) );
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P( E, A, B, C, D, R(66) );
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P( D, E, A, B, C, R(67) );
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P( C, D, E, A, B, R(68) );
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P( B, C, D, E, A, R(69) );
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P( A, B, C, D, E, R(70) );
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P( E, A, B, C, D, R(71) );
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P( D, E, A, B, C, R(72) );
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P( C, D, E, A, B, R(73) );
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P( B, C, D, E, A, R(74) );
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P( A, B, C, D, E, R(75) );
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P( E, A, B, C, D, R(76) );
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P( D, E, A, B, C, R(77) );
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P( C, D, E, A, B, R(78) );
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P( B, C, D, E, A, R(79) );
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#undef K
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#undef F
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ctx->state[0] += A;
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ctx->state[1] += B;
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ctx->state[2] += C;
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ctx->state[3] += D;
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ctx->state[4] += E;
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return( 0 );
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}
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#endif /* !MBEDTLS_SHA1_PROCESS_ALT */
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/*
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* SHA-1 process buffer
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*/
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int mbedtls_sha1_update_ret( mbedtls_sha1_context *ctx,
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const unsigned char *input,
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size_t ilen )
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{
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int ret;
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size_t fill;
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uint32_t left;
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if( ilen == 0 )
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return( 0 );
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left = ctx->total[0] & 0x3F;
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fill = 64 - left;
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ctx->total[0] += (uint32_t) ilen;
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ctx->total[0] &= 0xFFFFFFFF;
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if( ctx->total[0] < (uint32_t) ilen )
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ctx->total[1]++;
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if( left && ilen >= fill )
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{
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memcpy( (void *) (ctx->buffer + left), input, fill );
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if( ( ret = mbedtls_internal_sha1_process( ctx, ctx->buffer ) ) != 0 )
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return( ret );
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input += fill;
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ilen -= fill;
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left = 0;
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}
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while( ilen >= 64 )
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{
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if( ( ret = mbedtls_internal_sha1_process( ctx, input ) ) != 0 )
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return( ret );
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input += 64;
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ilen -= 64;
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}
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if( ilen > 0 )
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memcpy( (void *) (ctx->buffer + left), input, ilen );
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return( 0 );
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}
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static const unsigned char sha1_padding[64] =
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{
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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/*
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* SHA-1 final digest
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*/
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int mbedtls_sha1_finish_ret( mbedtls_sha1_context *ctx,
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unsigned char output[20] )
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{
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int ret;
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uint32_t last, padn;
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uint32_t high, low;
|
||
|
|
unsigned char msglen[8];
|
||
|
|
|
||
|
|
high = ( ctx->total[0] >> 29 )
|
||
|
|
| ( ctx->total[1] << 3 );
|
||
|
|
low = ( ctx->total[0] << 3 );
|
||
|
|
|
||
|
|
PUT_UINT32_BE( high, msglen, 0 );
|
||
|
|
PUT_UINT32_BE( low, msglen, 4 );
|
||
|
|
|
||
|
|
last = ctx->total[0] & 0x3F;
|
||
|
|
padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );
|
||
|
|
|
||
|
|
if( ( ret = mbedtls_sha1_update_ret( ctx, sha1_padding, padn ) ) != 0 )
|
||
|
|
return( ret );
|
||
|
|
if( ( ret = mbedtls_sha1_update_ret( ctx, msglen, 8 ) ) != 0 )
|
||
|
|
return( ret );
|
||
|
|
|
||
|
|
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 );
|
||
|
|
}
|
||
|
|
|
||
|
|
#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;
|
||
|
|
|
||
|
|
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_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 */
|