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Diffstat (limited to 'polarssl/src/library/md4.c')
| -rw-r--r-- | polarssl/src/library/md4.c | 460 |
1 files changed, 460 insertions, 0 deletions
diff --git a/polarssl/src/library/md4.c b/polarssl/src/library/md4.c new file mode 100644 index 0000000..ad52e5e --- /dev/null +++ b/polarssl/src/library/md4.c @@ -0,0 +1,460 @@ +/* + * RFC 1186/1320 compliant MD4 implementation + * + * Copyright (C) 2006-2010, Brainspark B.V. + * + * This file is part of PolarSSL (http://www.polarssl.org) + * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> + * + * All rights reserved. + * + * 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 MD4 algorithm was designed by Ron Rivest in 1990. + * + * http://www.ietf.org/rfc/rfc1186.txt + * http://www.ietf.org/rfc/rfc1320.txt + */ + +#include "polarssl/config.h" + +#if defined(POLARSSL_MD4_C) + +#include "polarssl/md4.h" + +#if defined(POLARSSL_FS_IO) || defined(POLARSSL_SELF_TEST) +#include <stdio.h> +#endif + +/* + * 32-bit integer manipulation macros (little endian) + */ +#ifndef GET_ULONG_LE +#define GET_ULONG_LE(n,b,i) \ +{ \ + (n) = ( (unsigned long) (b)[(i) ] ) \ + | ( (unsigned long) (b)[(i) + 1] << 8 ) \ + | ( (unsigned long) (b)[(i) + 2] << 16 ) \ + | ( (unsigned long) (b)[(i) + 3] << 24 ); \ +} +#endif + +#ifndef PUT_ULONG_LE +#define PUT_ULONG_LE(n,b,i) \ +{ \ + (b)[(i) ] = (unsigned char) ( (n) ); \ + (b)[(i) + 1] = (unsigned char) ( (n) >> 8 ); \ + (b)[(i) + 2] = (unsigned char) ( (n) >> 16 ); \ + (b)[(i) + 3] = (unsigned char) ( (n) >> 24 ); \ +} +#endif + +/* + * MD4 context setup + */ +void md4_starts( 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; +} + +static void md4_process( md4_context *ctx, const unsigned char data[64] ) +{ + unsigned long X[16], A, B, C, D; + + GET_ULONG_LE( X[ 0], data, 0 ); + GET_ULONG_LE( X[ 1], data, 4 ); + GET_ULONG_LE( X[ 2], data, 8 ); + GET_ULONG_LE( X[ 3], data, 12 ); + GET_ULONG_LE( X[ 4], data, 16 ); + GET_ULONG_LE( X[ 5], data, 20 ); + GET_ULONG_LE( X[ 6], data, 24 ); + GET_ULONG_LE( X[ 7], data, 28 ); + GET_ULONG_LE( X[ 8], data, 32 ); + GET_ULONG_LE( X[ 9], data, 36 ); + GET_ULONG_LE( X[10], data, 40 ); + GET_ULONG_LE( X[11], data, 44 ); + GET_ULONG_LE( X[12], data, 48 ); + GET_ULONG_LE( X[13], data, 52 ); + GET_ULONG_LE( X[14], data, 56 ); + GET_ULONG_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; +} + +/* + * MD4 process buffer + */ +void md4_update( md4_context *ctx, const unsigned char *input, size_t ilen ) +{ + size_t fill; + unsigned long left; + + if( ilen <= 0 ) + return; + + left = ctx->total[0] & 0x3F; + fill = 64 - left; + + ctx->total[0] += (unsigned long) ilen; + ctx->total[0] &= 0xFFFFFFFF; + + if( ctx->total[0] < (unsigned long) ilen ) + ctx->total[1]++; + + if( left && ilen >= fill ) + { + memcpy( (void *) (ctx->buffer + left), + (void *) input, fill ); + md4_process( ctx, ctx->buffer ); + input += fill; + ilen -= fill; + left = 0; + } + + while( ilen >= 64 ) + { + md4_process( ctx, input ); + input += 64; + ilen -= 64; + } + + if( ilen > 0 ) + { + memcpy( (void *) (ctx->buffer + left), + (void *) input, ilen ); + } +} + +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 + */ +void md4_finish( md4_context *ctx, unsigned char output[16] ) +{ + unsigned long last, padn; + unsigned long high, low; + unsigned char msglen[8]; + + high = ( ctx->total[0] >> 29 ) + | ( ctx->total[1] << 3 ); + low = ( ctx->total[0] << 3 ); + + PUT_ULONG_LE( low, msglen, 0 ); + PUT_ULONG_LE( high, msglen, 4 ); + + last = ctx->total[0] & 0x3F; + padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last ); + + md4_update( ctx, (unsigned char *) md4_padding, padn ); + md4_update( ctx, msglen, 8 ); + + PUT_ULONG_LE( ctx->state[0], output, 0 ); + PUT_ULONG_LE( ctx->state[1], output, 4 ); + PUT_ULONG_LE( ctx->state[2], output, 8 ); + PUT_ULONG_LE( ctx->state[3], output, 12 ); +} + +/* + * output = MD4( input buffer ) + */ +void md4( const unsigned char *input, size_t ilen, unsigned char output[16] ) +{ + md4_context ctx; + + md4_starts( &ctx ); + md4_update( &ctx, input, ilen ); + md4_finish( &ctx, output ); + + memset( &ctx, 0, sizeof( md4_context ) ); +} + +#if defined(POLARSSL_FS_IO) +/* + * output = MD4( file contents ) + */ +int md4_file( const char *path, unsigned char output[16] ) +{ + FILE *f; + size_t n; + md4_context ctx; + unsigned char buf[1024]; + + if( ( f = fopen( path, "rb" ) ) == NULL ) + return( POLARSSL_ERR_MD4_FILE_IO_ERROR ); + + md4_starts( &ctx ); + + while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 ) + md4_update( &ctx, buf, n ); + + md4_finish( &ctx, output ); + + memset( &ctx, 0, sizeof( md4_context ) ); + + if( ferror( f ) != 0 ) + { + fclose( f ); + return( POLARSSL_ERR_MD4_FILE_IO_ERROR ); + } + + fclose( f ); + return( 0 ); +} +#endif /* POLARSSL_FS_IO */ + +/* + * MD4 HMAC context setup + */ +void md4_hmac_starts( md4_context *ctx, const unsigned char *key, size_t keylen ) +{ + size_t i; + unsigned char sum[16]; + + if( keylen > 64 ) + { + md4( key, keylen, sum ); + keylen = 16; + key = sum; + } + + memset( ctx->ipad, 0x36, 64 ); + memset( ctx->opad, 0x5C, 64 ); + + for( i = 0; i < keylen; i++ ) + { + ctx->ipad[i] = (unsigned char)( ctx->ipad[i] ^ key[i] ); + ctx->opad[i] = (unsigned char)( ctx->opad[i] ^ key[i] ); + } + + md4_starts( ctx ); + md4_update( ctx, ctx->ipad, 64 ); + + memset( sum, 0, sizeof( sum ) ); +} + +/* + * MD4 HMAC process buffer + */ +void md4_hmac_update( md4_context *ctx, const unsigned char *input, size_t ilen ) +{ + md4_update( ctx, input, ilen ); +} + +/* + * MD4 HMAC final digest + */ +void md4_hmac_finish( md4_context *ctx, unsigned char output[16] ) +{ + unsigned char tmpbuf[16]; + + md4_finish( ctx, tmpbuf ); + md4_starts( ctx ); + md4_update( ctx, ctx->opad, 64 ); + md4_update( ctx, tmpbuf, 16 ); + md4_finish( ctx, output ); + + memset( tmpbuf, 0, sizeof( tmpbuf ) ); +} + +/* + * MD4 HMAC context reset + */ +void md4_hmac_reset( md4_context *ctx ) +{ + md4_starts( ctx ); + md4_update( ctx, ctx->ipad, 64 ); +} + +/* + * output = HMAC-MD4( hmac key, input buffer ) + */ +void md4_hmac( const unsigned char *key, size_t keylen, + const unsigned char *input, size_t ilen, + unsigned char output[16] ) +{ + md4_context ctx; + + md4_hmac_starts( &ctx, key, keylen ); + md4_hmac_update( &ctx, input, ilen ); + md4_hmac_finish( &ctx, output ); + + memset( &ctx, 0, sizeof( md4_context ) ); +} + +#if defined(POLARSSL_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 md4_self_test( int verbose ) +{ + int i; + unsigned char md4sum[16]; + + for( i = 0; i < 7; i++ ) + { + if( verbose != 0 ) + printf( " MD4 test #%d: ", i + 1 ); + + md4( (unsigned char *) md4_test_str[i], + strlen( md4_test_str[i] ), md4sum ); + + if( memcmp( md4sum, md4_test_sum[i], 16 ) != 0 ) + { + if( verbose != 0 ) + printf( "failed\n" ); + + return( 1 ); + } + + if( verbose != 0 ) + printf( "passed\n" ); + } + + if( verbose != 0 ) + printf( "\n" ); + + return( 0 ); +} + +#endif + +#endif |