Diffstat (limited to 'gammu/emb/common/misc/coding/md5.c') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | gammu/emb/common/misc/coding/md5.c | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/gammu/emb/common/misc/coding/md5.c b/gammu/emb/common/misc/coding/md5.c new file mode 100644 index 0000000..30fe33f --- a/dev/null +++ b/gammu/emb/common/misc/coding/md5.c @@ -0,0 +1,298 @@ +/* Taken from ReHash (see http://www.reichlsoft.de.vu/) and released + * under GPL/LGPL with permission from ReHash author + * Dominik Reichl <dominik.reichl@t-online.de>, Germany + */ + +/* + ********************************************************************** + ** MD5.cpp ** + ** ** + ** - Style modified by Tony Ray, January 2001 ** + ** Added support for randomizing initialization constants ** + ** - Style modified by Dominik Reichl, April 2003 ** + ** Optimized code ** + ** ** + ** MD5.c ** + ** RSA Data Security, Inc. MD5 Message Digest Algorithm ** + ** Created: 2/17/90 RLR ** + ** Revised: 1/91 SRD,AJ,BSK,JT Reference C Version ** + ********************************************************************** + */ + +/* + ********************************************************************** + ** MD5.h -- Header file for implementation of MD5 ** + ** RSA Data Security, Inc. MD5 Message Digest Algorithm ** + ** Created: 2/17/90 RLR ** + ** Revised: 12/27/90 SRD,AJ,BSK,JT Reference C version ** + ** Revised (for MD5): RLR 4/27/91 ** + ** -- G modified to have y&~z instead of y&z ** + ** -- FF, GG, HH modified to add in last register done ** + ** -- Access pattern: round 2 works mod 5, round 3 works mod 3 ** + ** -- distinct additive constant for each step ** + ** -- round 4 added, working mod 7 ** + ********************************************************************** + */ + +/* + ********************************************************************** + ** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. ** + ** ** + ** License to copy and use this software is granted provided that ** + ** it is identified as the "RSA Data Security, Inc. MD5 Message ** + ** Digest Algorithm" in all material mentioning or referencing this ** + ** software or this function. ** + ** ** + ** License is also granted to make and use derivative works ** + ** provided that such works are identified as "derived from the RSA ** + ** Data Security, Inc. MD5 Message Digest Algorithm" in all ** + ** material mentioning or referencing the derived work. ** + ** ** + ** RSA Data Security, Inc. makes no representations concerning ** + ** either the merchantability of this software or the suitability ** + ** of this software for any particular purpose. It is provided "as ** + ** is" without express or implied warranty of any kind. ** + ** ** + ** These notices must be retained in any copies of any part of this ** + ** documentation and/or software. ** + ********************************************************************** + */ + +#include <stdio.h> +#include <stdlib.h> + +#include "md5.h" + +/* Typedef a 32 bit type */ +#ifndef UINT4 +typedef unsigned long int UINT4; +#endif + +/* Data structure for MD5 (Message Digest) computation */ +typedef struct { + UINT4 i[2]; /* Number of _bits_ handled mod 2^64 */ + UINT4 buf[4]; /* Scratch buffer */ + unsigned char in[64]; /* Input buffer */ + unsigned char digest[16]; /* Actual digest after MD5Final call */ +} MD5_CTX; + +/* Padding */ +static unsigned char MD5_PADDING[64] = { + 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; + +/* MD5_F, MD5_G and MD5_H are basic MD5 functions: selection, majority, parity */ +#define MD5_F(x, y, z) (((x) & (y)) | ((~x) & (z))) +#define MD5_G(x, y, z) (((x) & (z)) | ((y) & (~z))) +#define MD5_H(x, y, z) ((x) ^ (y) ^ (z)) +#define MD5_I(x, y, z) ((y) ^ ((x) | (~z))) + +/* ROTATE_LEFT rotates x left n bits */ +#ifndef ROTATE_LEFT +#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) +#endif + +/* MD5_FF, MD5_GG, MD5_HH, and MD5_II transformations for rounds 1, 2, 3, and 4 */ +/* Rotation is separate from addition to prevent recomputation */ +#define MD5_FF(a, b, c, d, x, s, ac) {(a) += MD5_F ((b), (c), (d)) + (x) + (UINT4)(ac); (a) = ROTATE_LEFT ((a), (s)); (a) += (b); } +#define MD5_GG(a, b, c, d, x, s, ac) {(a) += MD5_G ((b), (c), (d)) + (x) + (UINT4)(ac); (a) = ROTATE_LEFT ((a), (s)); (a) += (b); } +#define MD5_HH(a, b, c, d, x, s, ac) {(a) += MD5_H ((b), (c), (d)) + (x) + (UINT4)(ac); (a) = ROTATE_LEFT ((a), (s)); (a) += (b); } +#define MD5_II(a, b, c, d, x, s, ac) {(a) += MD5_I ((b), (c), (d)) + (x) + (UINT4)(ac); (a) = ROTATE_LEFT ((a), (s)); (a) += (b); } + +/* Constants for transformation */ +#define MD5_S11 7 /* Round 1 */ +#define MD5_S12 12 +#define MD5_S13 17 +#define MD5_S14 22 +#define MD5_S21 5 /* Round 2 */ +#define MD5_S22 9 +#define MD5_S23 14 +#define MD5_S24 20 +#define MD5_S31 4 /* Round 3 */ +#define MD5_S32 11 +#define MD5_S33 16 +#define MD5_S34 23 +#define MD5_S41 6 /* Round 4 */ +#define MD5_S42 10 +#define MD5_S43 15 +#define MD5_S44 21 + +/* Basic MD5 step. MD5_Transform buf based on in */ +static void MD5_Transform (UINT4 *buf, UINT4 *in) +{ + UINT4 a = buf[0], b = buf[1], c = buf[2], d = buf[3]; + + /* Round 1 */ + MD5_FF ( a, b, c, d, in[ 0], MD5_S11, (UINT4) 3614090360u); /* 1 */ + MD5_FF ( d, a, b, c, in[ 1], MD5_S12, (UINT4) 3905402710u); /* 2 */ + MD5_FF ( c, d, a, b, in[ 2], MD5_S13, (UINT4) 606105819u); /* 3 */ + MD5_FF ( b, c, d, a, in[ 3], MD5_S14, (UINT4) 3250441966u); /* 4 */ + MD5_FF ( a, b, c, d, in[ 4], MD5_S11, (UINT4) 4118548399u); /* 5 */ + MD5_FF ( d, a, b, c, in[ 5], MD5_S12, (UINT4) 1200080426u); /* 6 */ + MD5_FF ( c, d, a, b, in[ 6], MD5_S13, (UINT4) 2821735955u); /* 7 */ + MD5_FF ( b, c, d, a, in[ 7], MD5_S14, (UINT4) 4249261313u); /* 8 */ + MD5_FF ( a, b, c, d, in[ 8], MD5_S11, (UINT4) 1770035416u); /* 9 */ + MD5_FF ( d, a, b, c, in[ 9], MD5_S12, (UINT4) 2336552879u); /* 10 */ + MD5_FF ( c, d, a, b, in[10], MD5_S13, (UINT4) 4294925233u); /* 11 */ + MD5_FF ( b, c, d, a, in[11], MD5_S14, (UINT4) 2304563134u); /* 12 */ + MD5_FF ( a, b, c, d, in[12], MD5_S11, (UINT4) 1804603682u); /* 13 */ + MD5_FF ( d, a, b, c, in[13], MD5_S12, (UINT4) 4254626195u); /* 14 */ + MD5_FF ( c, d, a, b, in[14], MD5_S13, (UINT4) 2792965006u); /* 15 */ + MD5_FF ( b, c, d, a, in[15], MD5_S14, (UINT4) 1236535329u); /* 16 */ + + /* Round 2 */ + MD5_GG ( a, b, c, d, in[ 1], MD5_S21, (UINT4) 4129170786u); /* 17 */ + MD5_GG ( d, a, b, c, in[ 6], MD5_S22, (UINT4) 3225465664u); /* 18 */ + MD5_GG ( c, d, a, b, in[11], MD5_S23, (UINT4) 643717713u); /* 19 */ + MD5_GG ( b, c, d, a, in[ 0], MD5_S24, (UINT4) 3921069994u); /* 20 */ + MD5_GG ( a, b, c, d, in[ 5], MD5_S21, (UINT4) 3593408605u); /* 21 */ + MD5_GG ( d, a, b, c, in[10], MD5_S22, (UINT4) 38016083u); /* 22 */ + MD5_GG ( c, d, a, b, in[15], MD5_S23, (UINT4) 3634488961u); /* 23 */ + MD5_GG ( b, c, d, a, in[ 4], MD5_S24, (UINT4) 3889429448u); /* 24 */ + MD5_GG ( a, b, c, d, in[ 9], MD5_S21, (UINT4) 568446438u); /* 25 */ + MD5_GG ( d, a, b, c, in[14], MD5_S22, (UINT4) 3275163606u); /* 26 */ + MD5_GG ( c, d, a, b, in[ 3], MD5_S23, (UINT4) 4107603335u); /* 27 */ + MD5_GG ( b, c, d, a, in[ 8], MD5_S24, (UINT4) 1163531501u); /* 28 */ + MD5_GG ( a, b, c, d, in[13], MD5_S21, (UINT4) 2850285829u); /* 29 */ + MD5_GG ( d, a, b, c, in[ 2], MD5_S22, (UINT4) 4243563512u); /* 30 */ + MD5_GG ( c, d, a, b, in[ 7], MD5_S23, (UINT4) 1735328473u); /* 31 */ + MD5_GG ( b, c, d, a, in[12], MD5_S24, (UINT4) 2368359562u); /* 32 */ + + /* Round 3 */ + MD5_HH ( a, b, c, d, in[ 5], MD5_S31, (UINT4) 4294588738u); /* 33 */ + MD5_HH ( d, a, b, c, in[ 8], MD5_S32, (UINT4) 2272392833u); /* 34 */ + MD5_HH ( c, d, a, b, in[11], MD5_S33, (UINT4) 1839030562u); /* 35 */ + MD5_HH ( b, c, d, a, in[14], MD5_S34, (UINT4) 4259657740u); /* 36 */ + MD5_HH ( a, b, c, d, in[ 1], MD5_S31, (UINT4) 2763975236u); /* 37 */ + MD5_HH ( d, a, b, c, in[ 4], MD5_S32, (UINT4) 1272893353u); /* 38 */ + MD5_HH ( c, d, a, b, in[ 7], MD5_S33, (UINT4) 4139469664u); /* 39 */ + MD5_HH ( b, c, d, a, in[10], MD5_S34, (UINT4) 3200236656u); /* 40 */ + MD5_HH ( a, b, c, d, in[13], MD5_S31, (UINT4) 681279174u); /* 41 */ + MD5_HH ( d, a, b, c, in[ 0], MD5_S32, (UINT4) 3936430074u); /* 42 */ + MD5_HH ( c, d, a, b, in[ 3], MD5_S33, (UINT4) 3572445317u); /* 43 */ + MD5_HH ( b, c, d, a, in[ 6], MD5_S34, (UINT4) 76029189u); /* 44 */ + MD5_HH ( a, b, c, d, in[ 9], MD5_S31, (UINT4) 3654602809u); /* 45 */ + MD5_HH ( d, a, b, c, in[12], MD5_S32, (UINT4) 3873151461u); /* 46 */ + MD5_HH ( c, d, a, b, in[15], MD5_S33, (UINT4) 530742520u); /* 47 */ + MD5_HH ( b, c, d, a, in[ 2], MD5_S34, (UINT4) 3299628645u); /* 48 */ + + /* Round 4 */ + MD5_II ( a, b, c, d, in[ 0], MD5_S41, (UINT4) 4096336452u); /* 49 */ + MD5_II ( d, a, b, c, in[ 7], MD5_S42, (UINT4) 1126891415u); /* 50 */ + MD5_II ( c, d, a, b, in[14], MD5_S43, (UINT4) 2878612391u); /* 51 */ + MD5_II ( b, c, d, a, in[ 5], MD5_S44, (UINT4) 4237533241u); /* 52 */ + MD5_II ( a, b, c, d, in[12], MD5_S41, (UINT4) 1700485571u); /* 53 */ + MD5_II ( d, a, b, c, in[ 3], MD5_S42, (UINT4) 2399980690u); /* 54 */ + MD5_II ( c, d, a, b, in[10], MD5_S43, (UINT4) 4293915773u); /* 55 */ + MD5_II ( b, c, d, a, in[ 1], MD5_S44, (UINT4) 2240044497u); /* 56 */ + MD5_II ( a, b, c, d, in[ 8], MD5_S41, (UINT4) 1873313359u); /* 57 */ + MD5_II ( d, a, b, c, in[15], MD5_S42, (UINT4) 4264355552u); /* 58 */ + MD5_II ( c, d, a, b, in[ 6], MD5_S43, (UINT4) 2734768916u); /* 59 */ + MD5_II ( b, c, d, a, in[13], MD5_S44, (UINT4) 1309151649u); /* 60 */ + MD5_II ( a, b, c, d, in[ 4], MD5_S41, (UINT4) 4149444226u); /* 61 */ + MD5_II ( d, a, b, c, in[11], MD5_S42, (UINT4) 3174756917u); /* 62 */ + MD5_II ( c, d, a, b, in[ 2], MD5_S43, (UINT4) 718787259u); /* 63 */ + MD5_II ( b, c, d, a, in[ 9], MD5_S44, (UINT4) 3951481745u); /* 64 */ + + buf[0] += a; + buf[1] += b; + buf[2] += c; + buf[3] += d; +} + +// Set pseudoRandomNumber to zero for RFC MD5 implementation +void MD5Init (MD5_CTX *mdContext, unsigned long pseudoRandomNumber) +{ + mdContext->i[0] = mdContext->i[1] = (UINT4)0; + + /* Load magic initialization constants */ + mdContext->buf[0] = (UINT4)0x67452301 + (pseudoRandomNumber * 11); + mdContext->buf[1] = (UINT4)0xefcdab89 + (pseudoRandomNumber * 71); + mdContext->buf[2] = (UINT4)0x98badcfe + (pseudoRandomNumber * 37); + mdContext->buf[3] = (UINT4)0x10325476 + (pseudoRandomNumber * 97); +} + +void MD5Update (MD5_CTX *mdContext, unsigned char *inBuf, unsigned int inLen) +{ + UINT4 in[16]; + int mdi = 0; + unsigned int i = 0, ii = 0; + + /* Compute number of bytes mod 64 */ + mdi = (int)((mdContext->i[0] >> 3) & 0x3F); + + /* Update number of bits */ + if ((mdContext->i[0] + ((UINT4)inLen << 3)) < mdContext->i[0]) mdContext->i[1]++; + mdContext->i[0] += ((UINT4)inLen << 3); + mdContext->i[1] += ((UINT4)inLen >> 29); + + while (inLen--) { + /* Add new character to buffer, increment mdi */ + mdContext->in[mdi++] = *inBuf++; + + /* Transform if necessary */ + if (mdi == 0x40) { + for (i = 0, ii = 0; i < 16; i++, ii += 4) + in[i] = (((UINT4)mdContext->in[ii+3]) << 24) | + (((UINT4)mdContext->in[ii+2]) << 16) | + (((UINT4)mdContext->in[ii+1]) << 8) | + ((UINT4)mdContext->in[ii]); + + MD5_Transform (mdContext->buf, in); + mdi = 0; + } + } +} + +void MD5Final (MD5_CTX *mdContext) +{ + UINT4 in[16]; + int mdi = 0; + unsigned int i = 0, ii = 0, padLen = 0; + + /* Save number of bits */ + in[14] = mdContext->i[0]; + in[15] = mdContext->i[1]; + + /* Compute number of bytes mod 64 */ + mdi = (int)((mdContext->i[0] >> 3) & 0x3F); + + /* Pad out to 56 mod 64 */ + padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi); + MD5Update (mdContext, MD5_PADDING, padLen); + + /* Append length in bits and transform */ + for (i = 0, ii = 0; i < 14; i++, ii += 4) + in[i] = (((UINT4)mdContext->in[ii+3]) << 24) | + (((UINT4)mdContext->in[ii+2]) << 16) | + (((UINT4)mdContext->in[ii+1]) << 8) | + ((UINT4)mdContext->in[ii]); + MD5_Transform (mdContext->buf, in); + + /* Store buffer in digest */ + for (i = 0, ii = 0; i < 4; i++, ii += 4) { + mdContext->digest[ii] = (unsigned char)( mdContext->buf[i] & 0xFF); + mdContext->digest[ii+1] = (unsigned char)((mdContext->buf[i] >> 8) & 0xFF); + mdContext->digest[ii+2] = (unsigned char)((mdContext->buf[i] >> 16) & 0xFF); + mdContext->digest[ii+3] = (unsigned char)((mdContext->buf[i] >> 24) & 0xFF); + } +} + +void CalculateMD5(unsigned char *buffer, int length, unsigned char *checksum) +{ + int i; + MD5_CTX m_md5; + + MD5Init(&m_md5, 0); + MD5Update(&m_md5, buffer, length); + MD5Final(&m_md5); + + for (i = 0; i < 16; i++) sprintf(checksum+i*2,"%02X", m_md5.digest[i]); +} |