/* | |
* RFC 1115/1319 compliant MD2 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 MD2 algorithm was designed by Ron Rivest in 1989. | |
* | |
* http://www.ietf.org/rfc/rfc1115.txt | |
* http://www.ietf.org/rfc/rfc1319.txt | |
*/ | |
#if !defined(MBEDTLS_CONFIG_FILE) | |
#include "mbedtls/config.h" | |
#else | |
#include MBEDTLS_CONFIG_FILE | |
#endif | |
#if defined(MBEDTLS_MD2_C) | |
#include "mbedtls/md2.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 */ | |
#if !defined(MBEDTLS_MD2_ALT) | |
static const unsigned char PI_SUBST[256] = | |
{ | |
0x29, 0x2E, 0x43, 0xC9, 0xA2, 0xD8, 0x7C, 0x01, 0x3D, 0x36, | |
0x54, 0xA1, 0xEC, 0xF0, 0x06, 0x13, 0x62, 0xA7, 0x05, 0xF3, | |
0xC0, 0xC7, 0x73, 0x8C, 0x98, 0x93, 0x2B, 0xD9, 0xBC, 0x4C, | |
0x82, 0xCA, 0x1E, 0x9B, 0x57, 0x3C, 0xFD, 0xD4, 0xE0, 0x16, | |
0x67, 0x42, 0x6F, 0x18, 0x8A, 0x17, 0xE5, 0x12, 0xBE, 0x4E, | |
0xC4, 0xD6, 0xDA, 0x9E, 0xDE, 0x49, 0xA0, 0xFB, 0xF5, 0x8E, | |
0xBB, 0x2F, 0xEE, 0x7A, 0xA9, 0x68, 0x79, 0x91, 0x15, 0xB2, | |
0x07, 0x3F, 0x94, 0xC2, 0x10, 0x89, 0x0B, 0x22, 0x5F, 0x21, | |
0x80, 0x7F, 0x5D, 0x9A, 0x5A, 0x90, 0x32, 0x27, 0x35, 0x3E, | |
0xCC, 0xE7, 0xBF, 0xF7, 0x97, 0x03, 0xFF, 0x19, 0x30, 0xB3, | |
0x48, 0xA5, 0xB5, 0xD1, 0xD7, 0x5E, 0x92, 0x2A, 0xAC, 0x56, | |
0xAA, 0xC6, 0x4F, 0xB8, 0x38, 0xD2, 0x96, 0xA4, 0x7D, 0xB6, | |
0x76, 0xFC, 0x6B, 0xE2, 0x9C, 0x74, 0x04, 0xF1, 0x45, 0x9D, | |
0x70, 0x59, 0x64, 0x71, 0x87, 0x20, 0x86, 0x5B, 0xCF, 0x65, | |
0xE6, 0x2D, 0xA8, 0x02, 0x1B, 0x60, 0x25, 0xAD, 0xAE, 0xB0, | |
0xB9, 0xF6, 0x1C, 0x46, 0x61, 0x69, 0x34, 0x40, 0x7E, 0x0F, | |
0x55, 0x47, 0xA3, 0x23, 0xDD, 0x51, 0xAF, 0x3A, 0xC3, 0x5C, | |
0xF9, 0xCE, 0xBA, 0xC5, 0xEA, 0x26, 0x2C, 0x53, 0x0D, 0x6E, | |
0x85, 0x28, 0x84, 0x09, 0xD3, 0xDF, 0xCD, 0xF4, 0x41, 0x81, | |
0x4D, 0x52, 0x6A, 0xDC, 0x37, 0xC8, 0x6C, 0xC1, 0xAB, 0xFA, | |
0x24, 0xE1, 0x7B, 0x08, 0x0C, 0xBD, 0xB1, 0x4A, 0x78, 0x88, | |
0x95, 0x8B, 0xE3, 0x63, 0xE8, 0x6D, 0xE9, 0xCB, 0xD5, 0xFE, | |
0x3B, 0x00, 0x1D, 0x39, 0xF2, 0xEF, 0xB7, 0x0E, 0x66, 0x58, | |
0xD0, 0xE4, 0xA6, 0x77, 0x72, 0xF8, 0xEB, 0x75, 0x4B, 0x0A, | |
0x31, 0x44, 0x50, 0xB4, 0x8F, 0xED, 0x1F, 0x1A, 0xDB, 0x99, | |
0x8D, 0x33, 0x9F, 0x11, 0x83, 0x14 | |
}; | |
void mbedtls_md2_init( mbedtls_md2_context *ctx ) | |
{ | |
memset( ctx, 0, sizeof( mbedtls_md2_context ) ); | |
} | |
void mbedtls_md2_free( mbedtls_md2_context *ctx ) | |
{ | |
if( ctx == NULL ) | |
return; | |
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_md2_context ) ); | |
} | |
void mbedtls_md2_clone( mbedtls_md2_context *dst, | |
const mbedtls_md2_context *src ) | |
{ | |
*dst = *src; | |
} | |
/* | |
* MD2 context setup | |
*/ | |
int mbedtls_md2_starts_ret( mbedtls_md2_context *ctx ) | |
{ | |
memset( ctx->cksum, 0, 16 ); | |
memset( ctx->state, 0, 46 ); | |
memset( ctx->buffer, 0, 16 ); | |
ctx->left = 0; | |
return( 0 ); | |
} | |
#if !defined(MBEDTLS_DEPRECATED_REMOVED) | |
void mbedtls_md2_starts( mbedtls_md2_context *ctx ) | |
{ | |
mbedtls_md2_starts_ret( ctx ); | |
} | |
#endif | |
#if !defined(MBEDTLS_MD2_PROCESS_ALT) | |
int mbedtls_internal_md2_process( mbedtls_md2_context *ctx ) | |
{ | |
int i, j; | |
unsigned char t = 0; | |
for( i = 0; i < 16; i++ ) | |
{ | |
ctx->state[i + 16] = ctx->buffer[i]; | |
ctx->state[i + 32] = | |
(unsigned char)( ctx->buffer[i] ^ ctx->state[i]); | |
} | |
for( i = 0; i < 18; i++ ) | |
{ | |
for( j = 0; j < 48; j++ ) | |
{ | |
ctx->state[j] = (unsigned char) | |
( ctx->state[j] ^ PI_SUBST[t] ); | |
t = ctx->state[j]; | |
} | |
t = (unsigned char)( t + i ); | |
} | |
t = ctx->cksum[15]; | |
for( i = 0; i < 16; i++ ) | |
{ | |
ctx->cksum[i] = (unsigned char) | |
( ctx->cksum[i] ^ PI_SUBST[ctx->buffer[i] ^ t] ); | |
t = ctx->cksum[i]; | |
} | |
return( 0 ); | |
} | |
#if !defined(MBEDTLS_DEPRECATED_REMOVED) | |
void mbedtls_md2_process( mbedtls_md2_context *ctx ) | |
{ | |
mbedtls_internal_md2_process( ctx ); | |
} | |
#endif | |
#endif /* !MBEDTLS_MD2_PROCESS_ALT */ | |
/* | |
* MD2 process buffer | |
*/ | |
int mbedtls_md2_update_ret( mbedtls_md2_context *ctx, | |
const unsigned char *input, | |
size_t ilen ) | |
{ | |
int ret; | |
size_t fill; | |
while( ilen > 0 ) | |
{ | |
if( ilen > 16 - ctx->left ) | |
fill = 16 - ctx->left; | |
else | |
fill = ilen; | |
memcpy( ctx->buffer + ctx->left, input, fill ); | |
ctx->left += fill; | |
input += fill; | |
ilen -= fill; | |
if( ctx->left == 16 ) | |
{ | |
ctx->left = 0; | |
if( ( ret = mbedtls_internal_md2_process( ctx ) ) != 0 ) | |
return( ret ); | |
} | |
} | |
return( 0 ); | |
} | |
#if !defined(MBEDTLS_DEPRECATED_REMOVED) | |
void mbedtls_md2_update( mbedtls_md2_context *ctx, | |
const unsigned char *input, | |
size_t ilen ) | |
{ | |
mbedtls_md2_update_ret( ctx, input, ilen ); | |
} | |
#endif | |
/* | |
* MD2 final digest | |
*/ | |
int mbedtls_md2_finish_ret( mbedtls_md2_context *ctx, | |
unsigned char output[16] ) | |
{ | |
int ret; | |
size_t i; | |
unsigned char x; | |
x = (unsigned char)( 16 - ctx->left ); | |
for( i = ctx->left; i < 16; i++ ) | |
ctx->buffer[i] = x; | |
if( ( ret = mbedtls_internal_md2_process( ctx ) ) != 0 ) | |
return( ret ); | |
memcpy( ctx->buffer, ctx->cksum, 16 ); | |
if( ( ret = mbedtls_internal_md2_process( ctx ) ) != 0 ) | |
return( ret ); | |
memcpy( output, ctx->state, 16 ); | |
return( 0 ); | |
} | |
#if !defined(MBEDTLS_DEPRECATED_REMOVED) | |
void mbedtls_md2_finish( mbedtls_md2_context *ctx, | |
unsigned char output[16] ) | |
{ | |
mbedtls_md2_finish_ret( ctx, output ); | |
} | |
#endif | |
#endif /* !MBEDTLS_MD2_ALT */ | |
/* | |
* output = MD2( input buffer ) | |
*/ | |
int mbedtls_md2_ret( const unsigned char *input, | |
size_t ilen, | |
unsigned char output[16] ) | |
{ | |
int ret; | |
mbedtls_md2_context ctx; | |
mbedtls_md2_init( &ctx ); | |
if( ( ret = mbedtls_md2_starts_ret( &ctx ) ) != 0 ) | |
goto exit; | |
if( ( ret = mbedtls_md2_update_ret( &ctx, input, ilen ) ) != 0 ) | |
goto exit; | |
if( ( ret = mbedtls_md2_finish_ret( &ctx, output ) ) != 0 ) | |
goto exit; | |
exit: | |
mbedtls_md2_free( &ctx ); | |
return( ret ); | |
} | |
#if !defined(MBEDTLS_DEPRECATED_REMOVED) | |
void mbedtls_md2( const unsigned char *input, | |
size_t ilen, | |
unsigned char output[16] ) | |
{ | |
mbedtls_md2_ret( input, ilen, output ); | |
} | |
#endif | |
#if defined(MBEDTLS_SELF_TEST) | |
/* | |
* RFC 1319 test vectors | |
*/ | |
static const unsigned char md2_test_str[7][81] = | |
{ | |
{ "" }, | |
{ "a" }, | |
{ "abc" }, | |
{ "message digest" }, | |
{ "abcdefghijklmnopqrstuvwxyz" }, | |
{ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" }, | |
{ "12345678901234567890123456789012345678901234567890123456789012" | |
"345678901234567890" } | |
}; | |
static const size_t md2_test_strlen[7] = | |
{ | |
0, 1, 3, 14, 26, 62, 80 | |
}; | |
static const unsigned char md2_test_sum[7][16] = | |
{ | |
{ 0x83, 0x50, 0xE5, 0xA3, 0xE2, 0x4C, 0x15, 0x3D, | |
0xF2, 0x27, 0x5C, 0x9F, 0x80, 0x69, 0x27, 0x73 }, | |
{ 0x32, 0xEC, 0x01, 0xEC, 0x4A, 0x6D, 0xAC, 0x72, | |
0xC0, 0xAB, 0x96, 0xFB, 0x34, 0xC0, 0xB5, 0xD1 }, | |
{ 0xDA, 0x85, 0x3B, 0x0D, 0x3F, 0x88, 0xD9, 0x9B, | |
0x30, 0x28, 0x3A, 0x69, 0xE6, 0xDE, 0xD6, 0xBB }, | |
{ 0xAB, 0x4F, 0x49, 0x6B, 0xFB, 0x2A, 0x53, 0x0B, | |
0x21, 0x9F, 0xF3, 0x30, 0x31, 0xFE, 0x06, 0xB0 }, | |
{ 0x4E, 0x8D, 0xDF, 0xF3, 0x65, 0x02, 0x92, 0xAB, | |
0x5A, 0x41, 0x08, 0xC3, 0xAA, 0x47, 0x94, 0x0B }, | |
{ 0xDA, 0x33, 0xDE, 0xF2, 0xA4, 0x2D, 0xF1, 0x39, | |
0x75, 0x35, 0x28, 0x46, 0xC3, 0x03, 0x38, 0xCD }, | |
{ 0xD5, 0x97, 0x6F, 0x79, 0xD8, 0x3D, 0x3A, 0x0D, | |
0xC9, 0x80, 0x6C, 0x3C, 0x66, 0xF3, 0xEF, 0xD8 } | |
}; | |
/* | |
* Checkup routine | |
*/ | |
int mbedtls_md2_self_test( int verbose ) | |
{ | |
int i, ret = 0; | |
unsigned char md2sum[16]; | |
for( i = 0; i < 7; i++ ) | |
{ | |
if( verbose != 0 ) | |
mbedtls_printf( " MD2 test #%d: ", i + 1 ); | |
ret = mbedtls_md2_ret( md2_test_str[i], md2_test_strlen[i], md2sum ); | |
if( ret != 0 ) | |
goto fail; | |
if( memcmp( md2sum, md2_test_sum[i], 16 ) != 0 ) | |
{ | |
ret = 1; | |
goto fail; | |
} | |
if( verbose != 0 ) | |
mbedtls_printf( "passed\n" ); | |
} | |
if( verbose != 0 ) | |
mbedtls_printf( "\n" ); | |
return( 0 ); | |
fail: | |
if( verbose != 0 ) | |
mbedtls_printf( "failed\n" ); | |
return( ret ); | |
} | |
#endif /* MBEDTLS_SELF_TEST */ | |
#endif /* MBEDTLS_MD2_C */ |