mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-11-29 12:34:22 +01:00
0a971b5dc8
New padding checking is unbiased on correct or incorrect padding and
has no branch prediction timing differences.
The additional MAC checks further straighten out the timing differences.
(cherry picked from commit e47b34bdc8)
Conflicts:
ChangeLog
library/ssl_tls.c
584 lines
16 KiB
C
584 lines
16 KiB
C
/*
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* RFC 1321 compliant MD5 implementation
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*
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* Copyright (C) 2006-2010, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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* The MD5 algorithm was designed by Ron Rivest in 1991.
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*
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* http://www.ietf.org/rfc/rfc1321.txt
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*/
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#include "polarssl/config.h"
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#if defined(POLARSSL_MD5_C)
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#include "polarssl/md5.h"
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#if defined(POLARSSL_FS_IO) || defined(POLARSSL_SELF_TEST)
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#include <stdio.h>
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#endif
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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_ULONG_LE
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#define GET_ULONG_LE(n,b,i) \
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{ \
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(n) = ( (unsigned long) (b)[(i) ] ) \
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| ( (unsigned long) (b)[(i) + 1] << 8 ) \
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| ( (unsigned long) (b)[(i) + 2] << 16 ) \
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| ( (unsigned long) (b)[(i) + 3] << 24 ); \
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}
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#endif
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#ifndef PUT_ULONG_LE
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#define PUT_ULONG_LE(n,b,i) \
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{ \
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(b)[(i) ] = (unsigned char) ( (n) ); \
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(b)[(i) + 1] = (unsigned char) ( (n) >> 8 ); \
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(b)[(i) + 2] = (unsigned char) ( (n) >> 16 ); \
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(b)[(i) + 3] = (unsigned char) ( (n) >> 24 ); \
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}
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#endif
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/*
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* MD5 context setup
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*/
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void md5_starts( md5_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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}
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void md5_process( md5_context *ctx, const unsigned char data[64] )
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{
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unsigned long X[16], A, B, C, D;
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GET_ULONG_LE( X[ 0], data, 0 );
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GET_ULONG_LE( X[ 1], data, 4 );
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GET_ULONG_LE( X[ 2], data, 8 );
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GET_ULONG_LE( X[ 3], data, 12 );
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GET_ULONG_LE( X[ 4], data, 16 );
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GET_ULONG_LE( X[ 5], data, 20 );
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GET_ULONG_LE( X[ 6], data, 24 );
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GET_ULONG_LE( X[ 7], data, 28 );
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GET_ULONG_LE( X[ 8], data, 32 );
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GET_ULONG_LE( X[ 9], data, 36 );
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GET_ULONG_LE( X[10], data, 40 );
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GET_ULONG_LE( X[11], data, 44 );
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GET_ULONG_LE( X[12], data, 48 );
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GET_ULONG_LE( X[13], data, 52 );
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GET_ULONG_LE( X[14], data, 56 );
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GET_ULONG_LE( X[15], data, 60 );
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#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
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#define P(a,b,c,d,k,s,t) \
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{ \
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a += F(b,c,d) + X[k] + t; a = S(a,s) + b; \
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}
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A = ctx->state[0];
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B = ctx->state[1];
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C = ctx->state[2];
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D = ctx->state[3];
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#define F(x,y,z) (z ^ (x & (y ^ z)))
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P( A, B, C, D, 0, 7, 0xD76AA478 );
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P( D, A, B, C, 1, 12, 0xE8C7B756 );
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P( C, D, A, B, 2, 17, 0x242070DB );
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P( B, C, D, A, 3, 22, 0xC1BDCEEE );
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P( A, B, C, D, 4, 7, 0xF57C0FAF );
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P( D, A, B, C, 5, 12, 0x4787C62A );
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P( C, D, A, B, 6, 17, 0xA8304613 );
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P( B, C, D, A, 7, 22, 0xFD469501 );
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P( A, B, C, D, 8, 7, 0x698098D8 );
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P( D, A, B, C, 9, 12, 0x8B44F7AF );
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P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
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P( B, C, D, A, 11, 22, 0x895CD7BE );
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P( A, B, C, D, 12, 7, 0x6B901122 );
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P( D, A, B, C, 13, 12, 0xFD987193 );
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P( C, D, A, B, 14, 17, 0xA679438E );
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P( B, C, D, A, 15, 22, 0x49B40821 );
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#undef F
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#define F(x,y,z) (y ^ (z & (x ^ y)))
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P( A, B, C, D, 1, 5, 0xF61E2562 );
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P( D, A, B, C, 6, 9, 0xC040B340 );
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P( C, D, A, B, 11, 14, 0x265E5A51 );
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P( B, C, D, A, 0, 20, 0xE9B6C7AA );
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P( A, B, C, D, 5, 5, 0xD62F105D );
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P( D, A, B, C, 10, 9, 0x02441453 );
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P( C, D, A, B, 15, 14, 0xD8A1E681 );
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P( B, C, D, A, 4, 20, 0xE7D3FBC8 );
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P( A, B, C, D, 9, 5, 0x21E1CDE6 );
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P( D, A, B, C, 14, 9, 0xC33707D6 );
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P( C, D, A, B, 3, 14, 0xF4D50D87 );
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P( B, C, D, A, 8, 20, 0x455A14ED );
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P( A, B, C, D, 13, 5, 0xA9E3E905 );
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P( D, A, B, C, 2, 9, 0xFCEFA3F8 );
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P( C, D, A, B, 7, 14, 0x676F02D9 );
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P( B, C, D, A, 12, 20, 0x8D2A4C8A );
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#undef F
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#define F(x,y,z) (x ^ y ^ z)
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P( A, B, C, D, 5, 4, 0xFFFA3942 );
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P( D, A, B, C, 8, 11, 0x8771F681 );
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P( C, D, A, B, 11, 16, 0x6D9D6122 );
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P( B, C, D, A, 14, 23, 0xFDE5380C );
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P( A, B, C, D, 1, 4, 0xA4BEEA44 );
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P( D, A, B, C, 4, 11, 0x4BDECFA9 );
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P( C, D, A, B, 7, 16, 0xF6BB4B60 );
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P( B, C, D, A, 10, 23, 0xBEBFBC70 );
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P( A, B, C, D, 13, 4, 0x289B7EC6 );
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P( D, A, B, C, 0, 11, 0xEAA127FA );
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P( C, D, A, B, 3, 16, 0xD4EF3085 );
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P( B, C, D, A, 6, 23, 0x04881D05 );
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P( A, B, C, D, 9, 4, 0xD9D4D039 );
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P( D, A, B, C, 12, 11, 0xE6DB99E5 );
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P( C, D, A, B, 15, 16, 0x1FA27CF8 );
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P( B, C, D, A, 2, 23, 0xC4AC5665 );
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#undef F
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#define F(x,y,z) (y ^ (x | ~z))
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P( A, B, C, D, 0, 6, 0xF4292244 );
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P( D, A, B, C, 7, 10, 0x432AFF97 );
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P( C, D, A, B, 14, 15, 0xAB9423A7 );
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P( B, C, D, A, 5, 21, 0xFC93A039 );
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P( A, B, C, D, 12, 6, 0x655B59C3 );
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P( D, A, B, C, 3, 10, 0x8F0CCC92 );
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P( C, D, A, B, 10, 15, 0xFFEFF47D );
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P( B, C, D, A, 1, 21, 0x85845DD1 );
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P( A, B, C, D, 8, 6, 0x6FA87E4F );
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P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
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P( C, D, A, B, 6, 15, 0xA3014314 );
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P( B, C, D, A, 13, 21, 0x4E0811A1 );
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P( A, B, C, D, 4, 6, 0xF7537E82 );
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P( D, A, B, C, 11, 10, 0xBD3AF235 );
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P( C, D, A, B, 2, 15, 0x2AD7D2BB );
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P( B, C, D, A, 9, 21, 0xEB86D391 );
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#undef F
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ctx->state[0] += A;
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ctx->state[1] += B;
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ctx->state[2] += C;
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ctx->state[3] += D;
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}
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/*
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* MD5 process buffer
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*/
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void md5_update( md5_context *ctx, const unsigned char *input, size_t ilen )
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{
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size_t fill;
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unsigned long left;
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if( ilen <= 0 )
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return;
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left = ctx->total[0] & 0x3F;
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fill = 64 - left;
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ctx->total[0] += (unsigned long) ilen;
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ctx->total[0] &= 0xFFFFFFFF;
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if( ctx->total[0] < (unsigned long) 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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md5_process( ctx, ctx->buffer );
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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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md5_process( ctx, input );
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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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}
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static const unsigned char md5_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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* MD5 final digest
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*/
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void md5_finish( md5_context *ctx, unsigned char output[16] )
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{
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unsigned long last, padn;
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unsigned long 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_ULONG_LE( low, msglen, 0 );
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PUT_ULONG_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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md5_update( ctx, (unsigned char *) md5_padding, padn );
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md5_update( ctx, msglen, 8 );
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PUT_ULONG_LE( ctx->state[0], output, 0 );
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PUT_ULONG_LE( ctx->state[1], output, 4 );
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PUT_ULONG_LE( ctx->state[2], output, 8 );
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PUT_ULONG_LE( ctx->state[3], output, 12 );
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}
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/*
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* output = MD5( input buffer )
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*/
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void md5( const unsigned char *input, size_t ilen, unsigned char output[16] )
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{
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md5_context ctx;
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md5_starts( &ctx );
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md5_update( &ctx, input, ilen );
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md5_finish( &ctx, output );
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memset( &ctx, 0, sizeof( md5_context ) );
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}
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#if defined(POLARSSL_FS_IO)
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/*
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* output = MD5( file contents )
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*/
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int md5_file( const char *path, unsigned char output[16] )
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{
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FILE *f;
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size_t n;
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md5_context ctx;
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unsigned char buf[1024];
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if( ( f = fopen( path, "rb" ) ) == NULL )
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return( POLARSSL_ERR_MD5_FILE_IO_ERROR );
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md5_starts( &ctx );
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while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
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md5_update( &ctx, buf, n );
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md5_finish( &ctx, output );
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memset( &ctx, 0, sizeof( md5_context ) );
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if( ferror( f ) != 0 )
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{
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fclose( f );
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return( POLARSSL_ERR_MD5_FILE_IO_ERROR );
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}
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fclose( f );
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return( 0 );
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}
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#endif /* POLARSSL_FS_IO */
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/*
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* MD5 HMAC context setup
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*/
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void md5_hmac_starts( md5_context *ctx, const unsigned char *key, size_t keylen )
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{
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size_t i;
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unsigned char sum[16];
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if( keylen > 64 )
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{
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md5( key, keylen, sum );
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keylen = 16;
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key = sum;
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}
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memset( ctx->ipad, 0x36, 64 );
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memset( ctx->opad, 0x5C, 64 );
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for( i = 0; i < keylen; i++ )
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{
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ctx->ipad[i] = (unsigned char)( ctx->ipad[i] ^ key[i] );
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ctx->opad[i] = (unsigned char)( ctx->opad[i] ^ key[i] );
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}
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md5_starts( ctx );
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md5_update( ctx, ctx->ipad, 64 );
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memset( sum, 0, sizeof( sum ) );
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}
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/*
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* MD5 HMAC process buffer
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*/
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void md5_hmac_update( md5_context *ctx, const unsigned char *input, size_t ilen )
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{
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md5_update( ctx, input, ilen );
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}
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/*
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* MD5 HMAC final digest
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*/
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void md5_hmac_finish( md5_context *ctx, unsigned char output[16] )
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{
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unsigned char tmpbuf[16];
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md5_finish( ctx, tmpbuf );
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md5_starts( ctx );
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md5_update( ctx, ctx->opad, 64 );
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md5_update( ctx, tmpbuf, 16 );
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md5_finish( ctx, output );
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memset( tmpbuf, 0, sizeof( tmpbuf ) );
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}
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/*
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* MD5 HMAC context reset
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*/
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void md5_hmac_reset( md5_context *ctx )
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{
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md5_starts( ctx );
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md5_update( ctx, ctx->ipad, 64 );
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}
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/*
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* output = HMAC-MD5( hmac key, input buffer )
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*/
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void md5_hmac( const unsigned char *key, size_t keylen,
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const unsigned char *input, size_t ilen,
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unsigned char output[16] )
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{
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md5_context ctx;
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md5_hmac_starts( &ctx, key, keylen );
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md5_hmac_update( &ctx, input, ilen );
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md5_hmac_finish( &ctx, output );
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memset( &ctx, 0, sizeof( md5_context ) );
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}
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#if defined(POLARSSL_SELF_TEST)
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/*
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* RFC 1321 test vectors
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*/
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static unsigned char md5_test_buf[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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{ "12345678901234567890123456789012345678901234567890123456789012" \
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"345678901234567890" }
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};
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|
|
static const int md5_test_buflen[7] =
|
|
{
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0, 1, 3, 14, 26, 62, 80
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};
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|
static const unsigned char md5_test_sum[7][16] =
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{
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{ 0xD4, 0x1D, 0x8C, 0xD9, 0x8F, 0x00, 0xB2, 0x04,
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0xE9, 0x80, 0x09, 0x98, 0xEC, 0xF8, 0x42, 0x7E },
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{ 0x0C, 0xC1, 0x75, 0xB9, 0xC0, 0xF1, 0xB6, 0xA8,
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0x31, 0xC3, 0x99, 0xE2, 0x69, 0x77, 0x26, 0x61 },
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{ 0x90, 0x01, 0x50, 0x98, 0x3C, 0xD2, 0x4F, 0xB0,
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0xD6, 0x96, 0x3F, 0x7D, 0x28, 0xE1, 0x7F, 0x72 },
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{ 0xF9, 0x6B, 0x69, 0x7D, 0x7C, 0xB7, 0x93, 0x8D,
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0x52, 0x5A, 0x2F, 0x31, 0xAA, 0xF1, 0x61, 0xD0 },
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{ 0xC3, 0xFC, 0xD3, 0xD7, 0x61, 0x92, 0xE4, 0x00,
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0x7D, 0xFB, 0x49, 0x6C, 0xCA, 0x67, 0xE1, 0x3B },
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{ 0xD1, 0x74, 0xAB, 0x98, 0xD2, 0x77, 0xD9, 0xF5,
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0xA5, 0x61, 0x1C, 0x2C, 0x9F, 0x41, 0x9D, 0x9F },
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|
{ 0x57, 0xED, 0xF4, 0xA2, 0x2B, 0xE3, 0xC9, 0x55,
|
|
0xAC, 0x49, 0xDA, 0x2E, 0x21, 0x07, 0xB6, 0x7A }
|
|
};
|
|
|
|
/*
|
|
* RFC 2202 test vectors
|
|
*/
|
|
static unsigned char md5_hmac_test_key[7][26] =
|
|
{
|
|
{ "\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B\x0B" },
|
|
{ "Jefe" },
|
|
{ "\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA\xAA" },
|
|
{ "\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F\x10"
|
|
"\x11\x12\x13\x14\x15\x16\x17\x18\x19" },
|
|
{ "\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C" },
|
|
{ "" }, /* 0xAA 80 times */
|
|
{ "" }
|
|
};
|
|
|
|
static const int md5_hmac_test_keylen[7] =
|
|
{
|
|
16, 4, 16, 25, 16, 80, 80
|
|
};
|
|
|
|
static unsigned char md5_hmac_test_buf[7][74] =
|
|
{
|
|
{ "Hi There" },
|
|
{ "what do ya want for nothing?" },
|
|
{ "\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
|
|
"\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
|
|
"\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
|
|
"\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD"
|
|
"\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD\xDD" },
|
|
{ "\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
|
|
"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
|
|
"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
|
|
"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
|
|
"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD" },
|
|
{ "Test With Truncation" },
|
|
{ "Test Using Larger Than Block-Size Key - Hash Key First" },
|
|
{ "Test Using Larger Than Block-Size Key and Larger"
|
|
" Than One Block-Size Data" }
|
|
};
|
|
|
|
static const int md5_hmac_test_buflen[7] =
|
|
{
|
|
8, 28, 50, 50, 20, 54, 73
|
|
};
|
|
|
|
static const unsigned char md5_hmac_test_sum[7][16] =
|
|
{
|
|
{ 0x92, 0x94, 0x72, 0x7A, 0x36, 0x38, 0xBB, 0x1C,
|
|
0x13, 0xF4, 0x8E, 0xF8, 0x15, 0x8B, 0xFC, 0x9D },
|
|
{ 0x75, 0x0C, 0x78, 0x3E, 0x6A, 0xB0, 0xB5, 0x03,
|
|
0xEA, 0xA8, 0x6E, 0x31, 0x0A, 0x5D, 0xB7, 0x38 },
|
|
{ 0x56, 0xBE, 0x34, 0x52, 0x1D, 0x14, 0x4C, 0x88,
|
|
0xDB, 0xB8, 0xC7, 0x33, 0xF0, 0xE8, 0xB3, 0xF6 },
|
|
{ 0x69, 0x7E, 0xAF, 0x0A, 0xCA, 0x3A, 0x3A, 0xEA,
|
|
0x3A, 0x75, 0x16, 0x47, 0x46, 0xFF, 0xAA, 0x79 },
|
|
{ 0x56, 0x46, 0x1E, 0xF2, 0x34, 0x2E, 0xDC, 0x00,
|
|
0xF9, 0xBA, 0xB9, 0x95 },
|
|
{ 0x6B, 0x1A, 0xB7, 0xFE, 0x4B, 0xD7, 0xBF, 0x8F,
|
|
0x0B, 0x62, 0xE6, 0xCE, 0x61, 0xB9, 0xD0, 0xCD },
|
|
{ 0x6F, 0x63, 0x0F, 0xAD, 0x67, 0xCD, 0xA0, 0xEE,
|
|
0x1F, 0xB1, 0xF5, 0x62, 0xDB, 0x3A, 0xA5, 0x3E }
|
|
};
|
|
|
|
/*
|
|
* Checkup routine
|
|
*/
|
|
int md5_self_test( int verbose )
|
|
{
|
|
int i, buflen;
|
|
unsigned char buf[1024];
|
|
unsigned char md5sum[16];
|
|
md5_context ctx;
|
|
|
|
for( i = 0; i < 7; i++ )
|
|
{
|
|
if( verbose != 0 )
|
|
printf( " MD5 test #%d: ", i + 1 );
|
|
|
|
md5( md5_test_buf[i], md5_test_buflen[i], md5sum );
|
|
|
|
if( memcmp( md5sum, md5_test_sum[i], 16 ) != 0 )
|
|
{
|
|
if( verbose != 0 )
|
|
printf( "failed\n" );
|
|
|
|
return( 1 );
|
|
}
|
|
|
|
if( verbose != 0 )
|
|
printf( "passed\n" );
|
|
}
|
|
|
|
if( verbose != 0 )
|
|
printf( "\n" );
|
|
|
|
for( i = 0; i < 7; i++ )
|
|
{
|
|
if( verbose != 0 )
|
|
printf( " HMAC-MD5 test #%d: ", i + 1 );
|
|
|
|
if( i == 5 || i == 6 )
|
|
{
|
|
memset( buf, '\xAA', buflen = 80 );
|
|
md5_hmac_starts( &ctx, buf, buflen );
|
|
}
|
|
else
|
|
md5_hmac_starts( &ctx, md5_hmac_test_key[i],
|
|
md5_hmac_test_keylen[i] );
|
|
|
|
md5_hmac_update( &ctx, md5_hmac_test_buf[i],
|
|
md5_hmac_test_buflen[i] );
|
|
|
|
md5_hmac_finish( &ctx, md5sum );
|
|
|
|
buflen = ( i == 4 ) ? 12 : 16;
|
|
|
|
if( memcmp( md5sum, md5_hmac_test_sum[i], buflen ) != 0 )
|
|
{
|
|
if( verbose != 0 )
|
|
printf( "failed\n" );
|
|
|
|
return( 1 );
|
|
}
|
|
|
|
if( verbose != 0 )
|
|
printf( "passed\n" );
|
|
}
|
|
|
|
if( verbose != 0 )
|
|
printf( "\n" );
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|