/* * RFC 1186/1320 compliant MD4 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 MD4 algorithm was designed by Ron Rivest in 1990. * * http://www.ietf.org/rfc/rfc1186.txt * http://www.ietf.org/rfc/rfc1320.txt */ #if !defined(MBEDTLS_CONFIG_FILE) #include "mbedtls/config.h" #else #include MBEDTLS_CONFIG_FILE #endif #if defined(MBEDTLS_MD4_C) #include "mbedtls/md4.h" #include #if defined(MBEDTLS_SELF_TEST) #if defined(MBEDTLS_PLATFORM_C) #include "mbedtls/platform.h" #else #include #define mbedtls_printf printf #endif /* MBEDTLS_PLATFORM_C */ #endif /* MBEDTLS_SELF_TEST */ #if !defined(MBEDTLS_MD4_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_md4_init( mbedtls_md4_context *ctx ) { memset( ctx, 0, sizeof( mbedtls_md4_context ) ); } void mbedtls_md4_free( mbedtls_md4_context *ctx ) { if( ctx == NULL ) return; mbedtls_zeroize( ctx, sizeof( mbedtls_md4_context ) ); } void mbedtls_md4_clone( mbedtls_md4_context *dst, const mbedtls_md4_context *src ) { *dst = *src; } /* * MD4 context setup */ int mbedtls_md4_starts_ext( mbedtls_md4_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; return( 0 ); } #if !defined(MBEDTLS_MD4_PROCESS_ALT) int mbedtls_internal_md4_process( mbedtls_md4_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))) A = ctx->state[0]; B = ctx->state[1]; C = ctx->state[2]; D = ctx->state[3]; #define F(x, y, z) ((x & y) | ((~x) & z)) #define P(a,b,c,d,x,s) { a += F(b,c,d) + x; a = S(a,s); } P( A, B, C, D, X[ 0], 3 ); P( D, A, B, C, X[ 1], 7 ); P( C, D, A, B, X[ 2], 11 ); P( B, C, D, A, X[ 3], 19 ); P( A, B, C, D, X[ 4], 3 ); P( D, A, B, C, X[ 5], 7 ); P( C, D, A, B, X[ 6], 11 ); P( B, C, D, A, X[ 7], 19 ); P( A, B, C, D, X[ 8], 3 ); P( D, A, B, C, X[ 9], 7 ); P( C, D, A, B, X[10], 11 ); P( B, C, D, A, X[11], 19 ); P( A, B, C, D, X[12], 3 ); P( D, A, B, C, X[13], 7 ); P( C, D, A, B, X[14], 11 ); P( B, C, D, A, X[15], 19 ); #undef P #undef F #define F(x,y,z) ((x & y) | (x & z) | (y & z)) #define P(a,b,c,d,x,s) { a += F(b,c,d) + x + 0x5A827999; a = S(a,s); } P( A, B, C, D, X[ 0], 3 ); P( D, A, B, C, X[ 4], 5 ); P( C, D, A, B, X[ 8], 9 ); P( B, C, D, A, X[12], 13 ); P( A, B, C, D, X[ 1], 3 ); P( D, A, B, C, X[ 5], 5 ); P( C, D, A, B, X[ 9], 9 ); P( B, C, D, A, X[13], 13 ); P( A, B, C, D, X[ 2], 3 ); P( D, A, B, C, X[ 6], 5 ); P( C, D, A, B, X[10], 9 ); P( B, C, D, A, X[14], 13 ); P( A, B, C, D, X[ 3], 3 ); P( D, A, B, C, X[ 7], 5 ); P( C, D, A, B, X[11], 9 ); P( B, C, D, A, X[15], 13 ); #undef P #undef F #define F(x,y,z) (x ^ y ^ z) #define P(a,b,c,d,x,s) { a += F(b,c,d) + x + 0x6ED9EBA1; a = S(a,s); } P( A, B, C, D, X[ 0], 3 ); P( D, A, B, C, X[ 8], 9 ); P( C, D, A, B, X[ 4], 11 ); P( B, C, D, A, X[12], 15 ); P( A, B, C, D, X[ 2], 3 ); P( D, A, B, C, X[10], 9 ); P( C, D, A, B, X[ 6], 11 ); P( B, C, D, A, X[14], 15 ); P( A, B, C, D, X[ 1], 3 ); P( D, A, B, C, X[ 9], 9 ); P( C, D, A, B, X[ 5], 11 ); P( B, C, D, A, X[13], 15 ); P( A, B, C, D, X[ 3], 3 ); P( D, A, B, C, X[11], 9 ); P( C, D, A, B, X[ 7], 11 ); P( B, C, D, A, X[15], 15 ); #undef F #undef P ctx->state[0] += A; ctx->state[1] += B; ctx->state[2] += C; ctx->state[3] += D; return( 0 ); } #endif /* !MBEDTLS_MD4_PROCESS_ALT */ /* * MD4 process buffer */ int mbedtls_md4_update_ext( mbedtls_md4_context *ctx, const unsigned char *input, size_t ilen ) { int ret; size_t fill; uint32_t left; 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), (void *) input, fill ); if( ( ret = mbedtls_internal_md4_process( ctx, ctx->buffer ) ) != 0 ) return( ret ); input += fill; ilen -= fill; left = 0; } while( ilen >= 64 ) { if( ( ret = mbedtls_internal_md4_process( ctx, input ) ) != 0 ) return( ret ); input += 64; ilen -= 64; } if( ilen > 0 ) { memcpy( (void *) (ctx->buffer + left), (void *) input, ilen ); } return( 0 ); } static const unsigned char md4_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 }; /* * MD4 final digest */ int mbedtls_md4_finish_ext( mbedtls_md4_context *ctx, unsigned char output[16] ) { int ret; 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 ); ret = mbedtls_md4_update_ext( ctx, (unsigned char *)md4_padding, padn ); if( ret != 0 ) return( ret ); if( ( ret = mbedtls_md4_update_ext( ctx, msglen, 8 ) ) != 0 ) return( ret ); 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 ); return( 0 ); } #endif /* !MBEDTLS_MD4_ALT */ /* * output = MD4( input buffer ) */ int mbedtls_md4_ext( const unsigned char *input, size_t ilen, unsigned char output[16] ) { int ret; mbedtls_md4_context ctx; mbedtls_md4_init( &ctx ); if( ( ret = mbedtls_md4_starts_ext( &ctx ) ) != 0 ) goto exit; if( ( ret = mbedtls_md4_update_ext( &ctx, input, ilen ) ) != 0 ) goto exit; if( ( ret = mbedtls_md4_finish_ext( &ctx, output ) ) != 0 ) goto exit; exit: mbedtls_md4_free( &ctx ); return( ret ); } #if defined(MBEDTLS_SELF_TEST) /* * RFC 1320 test vectors */ static const char md4_test_str[7][81] = { { "" }, { "a" }, { "abc" }, { "message digest" }, { "abcdefghijklmnopqrstuvwxyz" }, { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" }, { "12345678901234567890123456789012345678901234567890123456789012" \ "345678901234567890" } }; static const unsigned char md4_test_sum[7][16] = { { 0x31, 0xD6, 0xCF, 0xE0, 0xD1, 0x6A, 0xE9, 0x31, 0xB7, 0x3C, 0x59, 0xD7, 0xE0, 0xC0, 0x89, 0xC0 }, { 0xBD, 0xE5, 0x2C, 0xB3, 0x1D, 0xE3, 0x3E, 0x46, 0x24, 0x5E, 0x05, 0xFB, 0xDB, 0xD6, 0xFB, 0x24 }, { 0xA4, 0x48, 0x01, 0x7A, 0xAF, 0x21, 0xD8, 0x52, 0x5F, 0xC1, 0x0A, 0xE8, 0x7A, 0xA6, 0x72, 0x9D }, { 0xD9, 0x13, 0x0A, 0x81, 0x64, 0x54, 0x9F, 0xE8, 0x18, 0x87, 0x48, 0x06, 0xE1, 0xC7, 0x01, 0x4B }, { 0xD7, 0x9E, 0x1C, 0x30, 0x8A, 0xA5, 0xBB, 0xCD, 0xEE, 0xA8, 0xED, 0x63, 0xDF, 0x41, 0x2D, 0xA9 }, { 0x04, 0x3F, 0x85, 0x82, 0xF2, 0x41, 0xDB, 0x35, 0x1C, 0xE6, 0x27, 0xE1, 0x53, 0xE7, 0xF0, 0xE4 }, { 0xE3, 0x3B, 0x4D, 0xDC, 0x9C, 0x38, 0xF2, 0x19, 0x9C, 0x3E, 0x7B, 0x16, 0x4F, 0xCC, 0x05, 0x36 } }; /* * Checkup routine */ int mbedtls_md4_self_test( int verbose ) { int i; unsigned char md4sum[16]; for( i = 0; i < 7; i++ ) { if( verbose != 0 ) mbedtls_printf( " MD4 test #%d: ", i + 1 ); if( mbedtls_md4_ext( (unsigned char *) md4_test_str[i], strlen( md4_test_str[i] ), md4sum ) != 0 ) goto fail; if( memcmp( md4sum, md4_test_sum[i], 16 ) != 0 ) 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( 1 ); } #endif /* MBEDTLS_SELF_TEST */ #endif /* MBEDTLS_MD4_C */