445 lines
13 KiB
C
445 lines
13 KiB
C
/*
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* RFC 1186/1320 compliant MD4 implementation
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*
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* Copyright The Mbed TLS Contributors
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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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/*
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* The MD4 algorithm was designed by Ron Rivest in 1990.
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*
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* http://www.ietf.org/rfc/rfc1186.txt
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* http://www.ietf.org/rfc/rfc1320.txt
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*/
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#include "common.h"
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#if defined(MBEDTLS_MD4_C)
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#include "mbedtls/md4.h"
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#include "mbedtls/platform_util.h"
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#include "mbedtls/error.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_MD4_ALT)
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/*
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* 32-bit integer manipulation macros (little endian)
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*/
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#ifndef GET_UINT32_LE
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#define GET_UINT32_LE(n,b,i) \
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{ \
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(n) = ( (uint32_t) (b)[(i) ] ) \
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| ( (uint32_t) (b)[(i) + 1] << 8 ) \
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| ( (uint32_t) (b)[(i) + 2] << 16 ) \
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| ( (uint32_t) (b)[(i) + 3] << 24 ); \
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}
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#endif
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#ifndef PUT_UINT32_LE
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#define PUT_UINT32_LE(n,b,i) \
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{ \
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(b)[(i) ] = (unsigned char) ( ( (n) ) & 0xFF ); \
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(b)[(i) + 1] = (unsigned char) ( ( (n) >> 8 ) & 0xFF ); \
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(b)[(i) + 2] = (unsigned char) ( ( (n) >> 16 ) & 0xFF ); \
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(b)[(i) + 3] = (unsigned char) ( ( (n) >> 24 ) & 0xFF ); \
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}
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#endif
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void mbedtls_md4_init( mbedtls_md4_context *ctx )
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{
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memset( ctx, 0, sizeof( mbedtls_md4_context ) );
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}
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void mbedtls_md4_free( mbedtls_md4_context *ctx )
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{
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if( ctx == NULL )
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return;
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mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md4_context ) );
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}
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void mbedtls_md4_clone( mbedtls_md4_context *dst,
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const mbedtls_md4_context *src )
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{
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*dst = *src;
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}
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/*
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* MD4 context setup
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*/
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int mbedtls_md4_starts_ret( mbedtls_md4_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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return( 0 );
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}
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#if !defined(MBEDTLS_MD4_PROCESS_ALT)
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int mbedtls_internal_md4_process( mbedtls_md4_context *ctx,
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const unsigned char data[64] )
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{
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struct
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{
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uint32_t X[16], A, B, C, D;
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} local;
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GET_UINT32_LE( local.X[ 0], data, 0 );
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GET_UINT32_LE( local.X[ 1], data, 4 );
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GET_UINT32_LE( local.X[ 2], data, 8 );
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GET_UINT32_LE( local.X[ 3], data, 12 );
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GET_UINT32_LE( local.X[ 4], data, 16 );
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GET_UINT32_LE( local.X[ 5], data, 20 );
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GET_UINT32_LE( local.X[ 6], data, 24 );
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GET_UINT32_LE( local.X[ 7], data, 28 );
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GET_UINT32_LE( local.X[ 8], data, 32 );
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GET_UINT32_LE( local.X[ 9], data, 36 );
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GET_UINT32_LE( local.X[10], data, 40 );
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GET_UINT32_LE( local.X[11], data, 44 );
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GET_UINT32_LE( local.X[12], data, 48 );
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GET_UINT32_LE( local.X[13], data, 52 );
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GET_UINT32_LE( local.X[14], data, 56 );
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GET_UINT32_LE( local.X[15], data, 60 );
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#define S(x,n) (((x) << (n)) | (((x) & 0xFFFFFFFF) >> (32 - (n))))
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local.A = ctx->state[0];
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local.B = ctx->state[1];
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local.C = ctx->state[2];
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local.D = ctx->state[3];
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#define F(x, y, z) (((x) & (y)) | ((~(x)) & (z)))
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#define P(a,b,c,d,x,s) \
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do \
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{ \
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(a) += F((b),(c),(d)) + (x); \
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(a) = S((a),(s)); \
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} while( 0 )
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P( local.A, local.B, local.C, local.D, local.X[ 0], 3 );
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P( local.D, local.A, local.B, local.C, local.X[ 1], 7 );
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P( local.C, local.D, local.A, local.B, local.X[ 2], 11 );
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P( local.B, local.C, local.D, local.A, local.X[ 3], 19 );
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P( local.A, local.B, local.C, local.D, local.X[ 4], 3 );
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P( local.D, local.A, local.B, local.C, local.X[ 5], 7 );
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P( local.C, local.D, local.A, local.B, local.X[ 6], 11 );
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P( local.B, local.C, local.D, local.A, local.X[ 7], 19 );
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P( local.A, local.B, local.C, local.D, local.X[ 8], 3 );
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P( local.D, local.A, local.B, local.C, local.X[ 9], 7 );
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P( local.C, local.D, local.A, local.B, local.X[10], 11 );
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P( local.B, local.C, local.D, local.A, local.X[11], 19 );
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P( local.A, local.B, local.C, local.D, local.X[12], 3 );
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P( local.D, local.A, local.B, local.C, local.X[13], 7 );
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P( local.C, local.D, local.A, local.B, local.X[14], 11 );
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P( local.B, local.C, local.D, local.A, local.X[15], 19 );
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#undef P
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#undef F
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#define F(x,y,z) (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
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#define P(a,b,c,d,x,s) \
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do \
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{ \
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(a) += F((b),(c),(d)) + (x) + 0x5A827999; \
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(a) = S((a),(s)); \
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} while( 0 )
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P( local.A, local.B, local.C, local.D, local.X[ 0], 3 );
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P( local.D, local.A, local.B, local.C, local.X[ 4], 5 );
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P( local.C, local.D, local.A, local.B, local.X[ 8], 9 );
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P( local.B, local.C, local.D, local.A, local.X[12], 13 );
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P( local.A, local.B, local.C, local.D, local.X[ 1], 3 );
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P( local.D, local.A, local.B, local.C, local.X[ 5], 5 );
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P( local.C, local.D, local.A, local.B, local.X[ 9], 9 );
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P( local.B, local.C, local.D, local.A, local.X[13], 13 );
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P( local.A, local.B, local.C, local.D, local.X[ 2], 3 );
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P( local.D, local.A, local.B, local.C, local.X[ 6], 5 );
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P( local.C, local.D, local.A, local.B, local.X[10], 9 );
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P( local.B, local.C, local.D, local.A, local.X[14], 13 );
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P( local.A, local.B, local.C, local.D, local.X[ 3], 3 );
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P( local.D, local.A, local.B, local.C, local.X[ 7], 5 );
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P( local.C, local.D, local.A, local.B, local.X[11], 9 );
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P( local.B, local.C, local.D, local.A, local.X[15], 13 );
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#undef P
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#undef F
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#define F(x,y,z) ((x) ^ (y) ^ (z))
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#define P(a,b,c,d,x,s) \
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do \
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{ \
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(a) += F((b),(c),(d)) + (x) + 0x6ED9EBA1; \
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(a) = S((a),(s)); \
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} while( 0 )
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P( local.A, local.B, local.C, local.D, local.X[ 0], 3 );
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P( local.D, local.A, local.B, local.C, local.X[ 8], 9 );
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P( local.C, local.D, local.A, local.B, local.X[ 4], 11 );
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P( local.B, local.C, local.D, local.A, local.X[12], 15 );
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P( local.A, local.B, local.C, local.D, local.X[ 2], 3 );
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P( local.D, local.A, local.B, local.C, local.X[10], 9 );
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P( local.C, local.D, local.A, local.B, local.X[ 6], 11 );
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P( local.B, local.C, local.D, local.A, local.X[14], 15 );
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P( local.A, local.B, local.C, local.D, local.X[ 1], 3 );
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P( local.D, local.A, local.B, local.C, local.X[ 9], 9 );
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P( local.C, local.D, local.A, local.B, local.X[ 5], 11 );
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P( local.B, local.C, local.D, local.A, local.X[13], 15 );
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P( local.A, local.B, local.C, local.D, local.X[ 3], 3 );
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P( local.D, local.A, local.B, local.C, local.X[11], 9 );
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P( local.C, local.D, local.A, local.B, local.X[ 7], 11 );
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P( local.B, local.C, local.D, local.A, local.X[15], 15 );
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#undef F
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#undef P
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ctx->state[0] += local.A;
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ctx->state[1] += local.B;
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ctx->state[2] += local.C;
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ctx->state[3] += local.D;
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/* Zeroise variables to clear sensitive data from memory. */
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mbedtls_platform_zeroize( &local, sizeof( local ) );
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return( 0 );
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}
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#endif /* !MBEDTLS_MD4_PROCESS_ALT */
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/*
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* MD4 process buffer
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*/
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int mbedtls_md4_update_ret( mbedtls_md4_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 = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
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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),
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(void *) input, fill );
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if( ( ret = mbedtls_internal_md4_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_md4_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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{
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memcpy( (void *) (ctx->buffer + left),
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(void *) input, ilen );
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}
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return( 0 );
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}
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static const unsigned char md4_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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* MD4 final digest
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*/
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int mbedtls_md4_finish_ret( mbedtls_md4_context *ctx,
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unsigned char output[16] )
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{
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int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
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uint32_t last, padn;
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uint32_t high, low;
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unsigned char msglen[8];
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high = ( ctx->total[0] >> 29 )
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| ( ctx->total[1] << 3 );
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low = ( ctx->total[0] << 3 );
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PUT_UINT32_LE( low, msglen, 0 );
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PUT_UINT32_LE( high, msglen, 4 );
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last = ctx->total[0] & 0x3F;
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padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );
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ret = mbedtls_md4_update_ret( ctx, (unsigned char *)md4_padding, padn );
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if( ret != 0 )
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return( ret );
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if( ( ret = mbedtls_md4_update_ret( ctx, msglen, 8 ) ) != 0 )
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return( ret );
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PUT_UINT32_LE( ctx->state[0], output, 0 );
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PUT_UINT32_LE( ctx->state[1], output, 4 );
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PUT_UINT32_LE( ctx->state[2], output, 8 );
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PUT_UINT32_LE( ctx->state[3], output, 12 );
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return( 0 );
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}
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#endif /* !MBEDTLS_MD4_ALT */
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/*
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* output = MD4( input buffer )
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*/
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int mbedtls_md4_ret( const unsigned char *input,
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size_t ilen,
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unsigned char output[16] )
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{
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int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
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mbedtls_md4_context ctx;
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mbedtls_md4_init( &ctx );
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if( ( ret = mbedtls_md4_starts_ret( &ctx ) ) != 0 )
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goto exit;
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if( ( ret = mbedtls_md4_update_ret( &ctx, input, ilen ) ) != 0 )
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goto exit;
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if( ( ret = mbedtls_md4_finish_ret( &ctx, output ) ) != 0 )
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goto exit;
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exit:
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mbedtls_md4_free( &ctx );
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return( ret );
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}
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#if defined(MBEDTLS_SELF_TEST)
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/*
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* RFC 1320 test vectors
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*/
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static const unsigned char md4_test_str[7][81] =
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{
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{ "" },
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{ "a" },
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{ "abc" },
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{ "message digest" },
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{ "abcdefghijklmnopqrstuvwxyz" },
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{ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" },
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{ "12345678901234567890123456789012345678901234567890123456789012345678901234567890" }
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};
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static const size_t md4_test_strlen[7] =
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{
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0, 1, 3, 14, 26, 62, 80
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};
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static const unsigned char md4_test_sum[7][16] =
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{
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{ 0x31, 0xD6, 0xCF, 0xE0, 0xD1, 0x6A, 0xE9, 0x31,
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0xB7, 0x3C, 0x59, 0xD7, 0xE0, 0xC0, 0x89, 0xC0 },
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{ 0xBD, 0xE5, 0x2C, 0xB3, 0x1D, 0xE3, 0x3E, 0x46,
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0x24, 0x5E, 0x05, 0xFB, 0xDB, 0xD6, 0xFB, 0x24 },
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{ 0xA4, 0x48, 0x01, 0x7A, 0xAF, 0x21, 0xD8, 0x52,
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0x5F, 0xC1, 0x0A, 0xE8, 0x7A, 0xA6, 0x72, 0x9D },
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{ 0xD9, 0x13, 0x0A, 0x81, 0x64, 0x54, 0x9F, 0xE8,
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0x18, 0x87, 0x48, 0x06, 0xE1, 0xC7, 0x01, 0x4B },
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{ 0xD7, 0x9E, 0x1C, 0x30, 0x8A, 0xA5, 0xBB, 0xCD,
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0xEE, 0xA8, 0xED, 0x63, 0xDF, 0x41, 0x2D, 0xA9 },
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{ 0x04, 0x3F, 0x85, 0x82, 0xF2, 0x41, 0xDB, 0x35,
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0x1C, 0xE6, 0x27, 0xE1, 0x53, 0xE7, 0xF0, 0xE4 },
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{ 0xE3, 0x3B, 0x4D, 0xDC, 0x9C, 0x38, 0xF2, 0x19,
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0x9C, 0x3E, 0x7B, 0x16, 0x4F, 0xCC, 0x05, 0x36 }
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};
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/*
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* Checkup routine
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*/
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int mbedtls_md4_self_test( int verbose )
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{
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int i, ret = 0;
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unsigned char md4sum[16];
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for( i = 0; i < 7; i++ )
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{
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if( verbose != 0 )
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mbedtls_printf( " MD4 test #%d: ", i + 1 );
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ret = mbedtls_md4_ret( md4_test_str[i], md4_test_strlen[i], md4sum );
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if( ret != 0 )
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goto fail;
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if( memcmp( md4sum, md4_test_sum[i], 16 ) != 0 )
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{
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ret = 1;
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goto fail;
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}
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if( verbose != 0 )
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mbedtls_printf( "passed\n" );
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}
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if( verbose != 0 )
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mbedtls_printf( "\n" );
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return( 0 );
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fail:
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if( verbose != 0 )
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mbedtls_printf( "failed\n" );
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return( ret );
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}
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#endif /* MBEDTLS_SELF_TEST */
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#endif /* MBEDTLS_MD4_C */
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