405 lines
11 KiB
C
405 lines
11 KiB
C
/*
|
|
* RFC 1321 compliant MD5 implementation
|
|
*
|
|
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
|
|
*
|
|
* This file is part of mbed TLS (https://tls.mbed.org)
|
|
*
|
|
* 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 MD5 algorithm was designed by Ron Rivest in 1991.
|
|
*
|
|
* http://www.ietf.org/rfc/rfc1321.txt
|
|
*/
|
|
|
|
#if !defined(MBEDTLS_CONFIG_FILE)
|
|
#include "mbedtls/config.h"
|
|
#else
|
|
#include MBEDTLS_CONFIG_FILE
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_MD5_C)
|
|
|
|
#include "mbedtls/md5.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 */
|
|
|
|
#if !defined(MBEDTLS_MD5_ALT)
|
|
|
|
/* Implementation that should never be optimized out by the compiler */
|
|
static void mbedtls_zeroize( void *v, size_t n ) {
|
|
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
|
|
}
|
|
|
|
/*
|
|
* 32-bit integer manipulation macros (little endian)
|
|
*/
|
|
#ifndef GET_UINT32_LE
|
|
#define GET_UINT32_LE(n,b,i) \
|
|
{ \
|
|
(n) = ( (uint32_t) (b)[(i) ] ) \
|
|
| ( (uint32_t) (b)[(i) + 1] << 8 ) \
|
|
| ( (uint32_t) (b)[(i) + 2] << 16 ) \
|
|
| ( (uint32_t) (b)[(i) + 3] << 24 ); \
|
|
}
|
|
#endif
|
|
|
|
#ifndef PUT_UINT32_LE
|
|
#define PUT_UINT32_LE(n,b,i) \
|
|
{ \
|
|
(b)[(i) ] = (unsigned char) ( ( (n) ) & 0xFF ); \
|
|
(b)[(i) + 1] = (unsigned char) ( ( (n) >> 8 ) & 0xFF ); \
|
|
(b)[(i) + 2] = (unsigned char) ( ( (n) >> 16 ) & 0xFF ); \
|
|
(b)[(i) + 3] = (unsigned char) ( ( (n) >> 24 ) & 0xFF ); \
|
|
}
|
|
#endif
|
|
|
|
void mbedtls_md5_init( mbedtls_md5_context *ctx )
|
|
{
|
|
memset( ctx, 0, sizeof( mbedtls_md5_context ) );
|
|
}
|
|
|
|
void mbedtls_md5_free( mbedtls_md5_context *ctx )
|
|
{
|
|
if( ctx == NULL )
|
|
return;
|
|
|
|
mbedtls_zeroize( ctx, sizeof( mbedtls_md5_context ) );
|
|
}
|
|
|
|
void mbedtls_md5_clone( mbedtls_md5_context *dst,
|
|
const mbedtls_md5_context *src )
|
|
{
|
|
*dst = *src;
|
|
}
|
|
|
|
/*
|
|
* MD5 context setup
|
|
*/
|
|
void mbedtls_md5_starts( mbedtls_md5_context *ctx )
|
|
{
|
|
ctx->total[0] = 0;
|
|
ctx->total[1] = 0;
|
|
|
|
ctx->state[0] = 0x67452301;
|
|
ctx->state[1] = 0xEFCDAB89;
|
|
ctx->state[2] = 0x98BADCFE;
|
|
ctx->state[3] = 0x10325476;
|
|
}
|
|
|
|
#if !defined(MBEDTLS_MD5_PROCESS_ALT)
|
|
void mbedtls_md5_process( mbedtls_md5_context *ctx, const unsigned char data[64] )
|
|
{
|
|
uint32_t X[16], A, B, C, D;
|
|
|
|
GET_UINT32_LE( X[ 0], data, 0 );
|
|
GET_UINT32_LE( X[ 1], data, 4 );
|
|
GET_UINT32_LE( X[ 2], data, 8 );
|
|
GET_UINT32_LE( X[ 3], data, 12 );
|
|
GET_UINT32_LE( X[ 4], data, 16 );
|
|
GET_UINT32_LE( X[ 5], data, 20 );
|
|
GET_UINT32_LE( X[ 6], data, 24 );
|
|
GET_UINT32_LE( X[ 7], data, 28 );
|
|
GET_UINT32_LE( X[ 8], data, 32 );
|
|
GET_UINT32_LE( X[ 9], data, 36 );
|
|
GET_UINT32_LE( X[10], data, 40 );
|
|
GET_UINT32_LE( X[11], data, 44 );
|
|
GET_UINT32_LE( X[12], data, 48 );
|
|
GET_UINT32_LE( X[13], data, 52 );
|
|
GET_UINT32_LE( X[14], data, 56 );
|
|
GET_UINT32_LE( X[15], data, 60 );
|
|
|
|
#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
|
|
|
|
#define P(a,b,c,d,k,s,t) \
|
|
{ \
|
|
a += F(b,c,d) + X[k] + t; a = S(a,s) + b; \
|
|
}
|
|
|
|
A = ctx->state[0];
|
|
B = ctx->state[1];
|
|
C = ctx->state[2];
|
|
D = ctx->state[3];
|
|
|
|
#define F(x,y,z) (z ^ (x & (y ^ z)))
|
|
|
|
P( A, B, C, D, 0, 7, 0xD76AA478 );
|
|
P( D, A, B, C, 1, 12, 0xE8C7B756 );
|
|
P( C, D, A, B, 2, 17, 0x242070DB );
|
|
P( B, C, D, A, 3, 22, 0xC1BDCEEE );
|
|
P( A, B, C, D, 4, 7, 0xF57C0FAF );
|
|
P( D, A, B, C, 5, 12, 0x4787C62A );
|
|
P( C, D, A, B, 6, 17, 0xA8304613 );
|
|
P( B, C, D, A, 7, 22, 0xFD469501 );
|
|
P( A, B, C, D, 8, 7, 0x698098D8 );
|
|
P( D, A, B, C, 9, 12, 0x8B44F7AF );
|
|
P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
|
|
P( B, C, D, A, 11, 22, 0x895CD7BE );
|
|
P( A, B, C, D, 12, 7, 0x6B901122 );
|
|
P( D, A, B, C, 13, 12, 0xFD987193 );
|
|
P( C, D, A, B, 14, 17, 0xA679438E );
|
|
P( B, C, D, A, 15, 22, 0x49B40821 );
|
|
|
|
#undef F
|
|
|
|
#define F(x,y,z) (y ^ (z & (x ^ y)))
|
|
|
|
P( A, B, C, D, 1, 5, 0xF61E2562 );
|
|
P( D, A, B, C, 6, 9, 0xC040B340 );
|
|
P( C, D, A, B, 11, 14, 0x265E5A51 );
|
|
P( B, C, D, A, 0, 20, 0xE9B6C7AA );
|
|
P( A, B, C, D, 5, 5, 0xD62F105D );
|
|
P( D, A, B, C, 10, 9, 0x02441453 );
|
|
P( C, D, A, B, 15, 14, 0xD8A1E681 );
|
|
P( B, C, D, A, 4, 20, 0xE7D3FBC8 );
|
|
P( A, B, C, D, 9, 5, 0x21E1CDE6 );
|
|
P( D, A, B, C, 14, 9, 0xC33707D6 );
|
|
P( C, D, A, B, 3, 14, 0xF4D50D87 );
|
|
P( B, C, D, A, 8, 20, 0x455A14ED );
|
|
P( A, B, C, D, 13, 5, 0xA9E3E905 );
|
|
P( D, A, B, C, 2, 9, 0xFCEFA3F8 );
|
|
P( C, D, A, B, 7, 14, 0x676F02D9 );
|
|
P( B, C, D, A, 12, 20, 0x8D2A4C8A );
|
|
|
|
#undef F
|
|
|
|
#define F(x,y,z) (x ^ y ^ z)
|
|
|
|
P( A, B, C, D, 5, 4, 0xFFFA3942 );
|
|
P( D, A, B, C, 8, 11, 0x8771F681 );
|
|
P( C, D, A, B, 11, 16, 0x6D9D6122 );
|
|
P( B, C, D, A, 14, 23, 0xFDE5380C );
|
|
P( A, B, C, D, 1, 4, 0xA4BEEA44 );
|
|
P( D, A, B, C, 4, 11, 0x4BDECFA9 );
|
|
P( C, D, A, B, 7, 16, 0xF6BB4B60 );
|
|
P( B, C, D, A, 10, 23, 0xBEBFBC70 );
|
|
P( A, B, C, D, 13, 4, 0x289B7EC6 );
|
|
P( D, A, B, C, 0, 11, 0xEAA127FA );
|
|
P( C, D, A, B, 3, 16, 0xD4EF3085 );
|
|
P( B, C, D, A, 6, 23, 0x04881D05 );
|
|
P( A, B, C, D, 9, 4, 0xD9D4D039 );
|
|
P( D, A, B, C, 12, 11, 0xE6DB99E5 );
|
|
P( C, D, A, B, 15, 16, 0x1FA27CF8 );
|
|
P( B, C, D, A, 2, 23, 0xC4AC5665 );
|
|
|
|
#undef F
|
|
|
|
#define F(x,y,z) (y ^ (x | ~z))
|
|
|
|
P( A, B, C, D, 0, 6, 0xF4292244 );
|
|
P( D, A, B, C, 7, 10, 0x432AFF97 );
|
|
P( C, D, A, B, 14, 15, 0xAB9423A7 );
|
|
P( B, C, D, A, 5, 21, 0xFC93A039 );
|
|
P( A, B, C, D, 12, 6, 0x655B59C3 );
|
|
P( D, A, B, C, 3, 10, 0x8F0CCC92 );
|
|
P( C, D, A, B, 10, 15, 0xFFEFF47D );
|
|
P( B, C, D, A, 1, 21, 0x85845DD1 );
|
|
P( A, B, C, D, 8, 6, 0x6FA87E4F );
|
|
P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
|
|
P( C, D, A, B, 6, 15, 0xA3014314 );
|
|
P( B, C, D, A, 13, 21, 0x4E0811A1 );
|
|
P( A, B, C, D, 4, 6, 0xF7537E82 );
|
|
P( D, A, B, C, 11, 10, 0xBD3AF235 );
|
|
P( C, D, A, B, 2, 15, 0x2AD7D2BB );
|
|
P( B, C, D, A, 9, 21, 0xEB86D391 );
|
|
|
|
#undef F
|
|
|
|
ctx->state[0] += A;
|
|
ctx->state[1] += B;
|
|
ctx->state[2] += C;
|
|
ctx->state[3] += D;
|
|
}
|
|
#endif /* !MBEDTLS_MD5_PROCESS_ALT */
|
|
|
|
/*
|
|
* MD5 process buffer
|
|
*/
|
|
void mbedtls_md5_update( mbedtls_md5_context *ctx, const unsigned char *input, size_t ilen )
|
|
{
|
|
size_t fill;
|
|
uint32_t left;
|
|
|
|
if( ilen == 0 )
|
|
return;
|
|
|
|
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 );
|
|
mbedtls_md5_process( ctx, ctx->buffer );
|
|
input += fill;
|
|
ilen -= fill;
|
|
left = 0;
|
|
}
|
|
|
|
while( ilen >= 64 )
|
|
{
|
|
mbedtls_md5_process( ctx, input );
|
|
input += 64;
|
|
ilen -= 64;
|
|
}
|
|
|
|
if( ilen > 0 )
|
|
{
|
|
memcpy( (void *) (ctx->buffer + left), input, ilen );
|
|
}
|
|
}
|
|
|
|
static const unsigned char md5_padding[64] =
|
|
{
|
|
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
|
|
};
|
|
|
|
/*
|
|
* MD5 final digest
|
|
*/
|
|
void mbedtls_md5_finish( mbedtls_md5_context *ctx, unsigned char output[16] )
|
|
{
|
|
uint32_t last, padn;
|
|
uint32_t high, low;
|
|
unsigned char msglen[8];
|
|
|
|
high = ( ctx->total[0] >> 29 )
|
|
| ( ctx->total[1] << 3 );
|
|
low = ( ctx->total[0] << 3 );
|
|
|
|
PUT_UINT32_LE( low, msglen, 0 );
|
|
PUT_UINT32_LE( high, msglen, 4 );
|
|
|
|
last = ctx->total[0] & 0x3F;
|
|
padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );
|
|
|
|
mbedtls_md5_update( ctx, md5_padding, padn );
|
|
mbedtls_md5_update( ctx, msglen, 8 );
|
|
|
|
PUT_UINT32_LE( ctx->state[0], output, 0 );
|
|
PUT_UINT32_LE( ctx->state[1], output, 4 );
|
|
PUT_UINT32_LE( ctx->state[2], output, 8 );
|
|
PUT_UINT32_LE( ctx->state[3], output, 12 );
|
|
}
|
|
|
|
#endif /* !MBEDTLS_MD5_ALT */
|
|
|
|
/*
|
|
* output = MD5( input buffer )
|
|
*/
|
|
void mbedtls_md5( const unsigned char *input, size_t ilen, unsigned char output[16] )
|
|
{
|
|
mbedtls_md5_context ctx;
|
|
|
|
mbedtls_md5_init( &ctx );
|
|
mbedtls_md5_starts( &ctx );
|
|
mbedtls_md5_update( &ctx, input, ilen );
|
|
mbedtls_md5_finish( &ctx, output );
|
|
mbedtls_md5_free( &ctx );
|
|
}
|
|
|
|
#if defined(MBEDTLS_SELF_TEST)
|
|
/*
|
|
* RFC 1321 test vectors
|
|
*/
|
|
static const unsigned char md5_test_buf[7][81] =
|
|
{
|
|
{ "" },
|
|
{ "a" },
|
|
{ "abc" },
|
|
{ "message digest" },
|
|
{ "abcdefghijklmnopqrstuvwxyz" },
|
|
{ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" },
|
|
{ "12345678901234567890123456789012345678901234567890123456789012" \
|
|
"345678901234567890" }
|
|
};
|
|
|
|
static const int md5_test_buflen[7] =
|
|
{
|
|
0, 1, 3, 14, 26, 62, 80
|
|
};
|
|
|
|
static const unsigned char md5_test_sum[7][16] =
|
|
{
|
|
{ 0xD4, 0x1D, 0x8C, 0xD9, 0x8F, 0x00, 0xB2, 0x04,
|
|
0xE9, 0x80, 0x09, 0x98, 0xEC, 0xF8, 0x42, 0x7E },
|
|
{ 0x0C, 0xC1, 0x75, 0xB9, 0xC0, 0xF1, 0xB6, 0xA8,
|
|
0x31, 0xC3, 0x99, 0xE2, 0x69, 0x77, 0x26, 0x61 },
|
|
{ 0x90, 0x01, 0x50, 0x98, 0x3C, 0xD2, 0x4F, 0xB0,
|
|
0xD6, 0x96, 0x3F, 0x7D, 0x28, 0xE1, 0x7F, 0x72 },
|
|
{ 0xF9, 0x6B, 0x69, 0x7D, 0x7C, 0xB7, 0x93, 0x8D,
|
|
0x52, 0x5A, 0x2F, 0x31, 0xAA, 0xF1, 0x61, 0xD0 },
|
|
{ 0xC3, 0xFC, 0xD3, 0xD7, 0x61, 0x92, 0xE4, 0x00,
|
|
0x7D, 0xFB, 0x49, 0x6C, 0xCA, 0x67, 0xE1, 0x3B },
|
|
{ 0xD1, 0x74, 0xAB, 0x98, 0xD2, 0x77, 0xD9, 0xF5,
|
|
0xA5, 0x61, 0x1C, 0x2C, 0x9F, 0x41, 0x9D, 0x9F },
|
|
{ 0x57, 0xED, 0xF4, 0xA2, 0x2B, 0xE3, 0xC9, 0x55,
|
|
0xAC, 0x49, 0xDA, 0x2E, 0x21, 0x07, 0xB6, 0x7A }
|
|
};
|
|
|
|
/*
|
|
* Checkup routine
|
|
*/
|
|
int mbedtls_md5_self_test( int verbose )
|
|
{
|
|
int i;
|
|
unsigned char md5sum[16];
|
|
|
|
for( i = 0; i < 7; i++ )
|
|
{
|
|
if( verbose != 0 )
|
|
mbedtls_printf( " MD5 test #%d: ", i + 1 );
|
|
|
|
mbedtls_md5( md5_test_buf[i], md5_test_buflen[i], md5sum );
|
|
|
|
if( memcmp( md5sum, md5_test_sum[i], 16 ) != 0 )
|
|
{
|
|
if( verbose != 0 )
|
|
mbedtls_printf( "failed\n" );
|
|
|
|
return( 1 );
|
|
}
|
|
|
|
if( verbose != 0 )
|
|
mbedtls_printf( "passed\n" );
|
|
}
|
|
|
|
if( verbose != 0 )
|
|
mbedtls_printf( "\n" );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
#endif /* MBEDTLS_SELF_TEST */
|
|
|
|
#endif /* MBEDTLS_MD5_C */
|