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Diffstat (limited to 'thirdparty/misc/md5.cpp')
| -rw-r--r-- | thirdparty/misc/md5.cpp | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/thirdparty/misc/md5.cpp b/thirdparty/misc/md5.cpp new file mode 100644 index 0000000000..1653ab0be5 --- /dev/null +++ b/thirdparty/misc/md5.cpp @@ -0,0 +1,267 @@ +/* + ********************************************************************** + ** 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 ** + ********************************************************************** + */ + +/* + ********************************************************************** + ** 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 the following line if the md5.h header file is separate -- */ +#include "md5.h" + +/* forward declaration */ +static void Transform (uint32_t *buf, uint32_t *in); + + +static unsigned char 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 +}; + +/* F, G and H are basic MD5 functions: selection, majority, parity */ +#define F(x, y, z) (((x) & (y)) | ((~x) & (z))) +#define G(x, y, z) (((x) & (z)) | ((y) & (~z))) +#define H(x, y, z) ((x) ^ (y) ^ (z)) +#define I(x, y, z) ((y) ^ ((x) | (~z))) + +/* ROTATE_LEFT rotates x left n bits */ +#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) + +/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */ +/* Rotation is separate from addition to prevent recomputation */ +#define FF(a, b, c, d, x, s, ac) \ + {(a) += F ((b), (c), (d)) + (x) + (uint32_t)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ + } +#define GG(a, b, c, d, x, s, ac) \ + {(a) += G ((b), (c), (d)) + (x) + (uint32_t)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ + } +#define HH(a, b, c, d, x, s, ac) \ + {(a) += H ((b), (c), (d)) + (x) + (uint32_t)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ + } +#define II(a, b, c, d, x, s, ac) \ + {(a) += I ((b), (c), (d)) + (x) + (uint32_t)(ac); \ + (a) = ROTATE_LEFT ((a), (s)); \ + (a) += (b); \ + } + +void MD5Init (MD5_CTX *mdContext) +{ + mdContext->i[0] = mdContext->i[1] = (uint32_t)0; + + /* Load magic initialization constants. + */ + mdContext->buf[0] = (uint32_t)0x67452301; + mdContext->buf[1] = (uint32_t)0xefcdab89; + mdContext->buf[2] = (uint32_t)0x98badcfe; + mdContext->buf[3] = (uint32_t)0x10325476; +} + +void MD5Update (MD5_CTX *mdContext,unsigned char *inBuf,unsigned int inLen) { + uint32_t in[16]; + int mdi; + unsigned int i, ii; + + /* compute number of bytes mod 64 */ + mdi = (int)((mdContext->i[0] >> 3) & 0x3F); + + /* update number of bits */ + if ((mdContext->i[0] + ((uint32_t)inLen << 3)) < mdContext->i[0]) + mdContext->i[1]++; + mdContext->i[0] += ((uint32_t)inLen << 3); + mdContext->i[1] += ((uint32_t)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] = (((uint32_t)mdContext->in[ii+3]) << 24) | + (((uint32_t)mdContext->in[ii+2]) << 16) | + (((uint32_t)mdContext->in[ii+1]) << 8) | + ((uint32_t)mdContext->in[ii]); + Transform (mdContext->buf, in); + mdi = 0; + } + } +} + +void MD5Final (MD5_CTX *mdContext) { + uint32_t in[16]; + int mdi; + unsigned int i, ii; + unsigned int padLen; + + /* 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, PADDING, padLen); + + /* append length in bits and transform */ + for (i = 0, ii = 0; i < 14; i++, ii += 4) + in[i] = (((uint32_t)mdContext->in[ii+3]) << 24) | + (((uint32_t)mdContext->in[ii+2]) << 16) | + (((uint32_t)mdContext->in[ii+1]) << 8) | + ((uint32_t)mdContext->in[ii]); + 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); + } +} + +/* Basic MD5 step. Transform buf based on in. + */ +static void Transform (uint32_t *buf, uint32_t *in) { + uint32_t a = buf[0], b = buf[1], c = buf[2], d = buf[3]; + + /* Round 1 */ +#define S11 7 +#define S12 12 +#define S13 17 +#define S14 22 + FF ( a, b, c, d, in[ 0], S11, 3614090360); /* 1 */ + FF ( d, a, b, c, in[ 1], S12, 3905402710); /* 2 */ + FF ( c, d, a, b, in[ 2], S13, 606105819); /* 3 */ + FF ( b, c, d, a, in[ 3], S14, 3250441966); /* 4 */ + FF ( a, b, c, d, in[ 4], S11, 4118548399); /* 5 */ + FF ( d, a, b, c, in[ 5], S12, 1200080426); /* 6 */ + FF ( c, d, a, b, in[ 6], S13, 2821735955); /* 7 */ + FF ( b, c, d, a, in[ 7], S14, 4249261313); /* 8 */ + FF ( a, b, c, d, in[ 8], S11, 1770035416); /* 9 */ + FF ( d, a, b, c, in[ 9], S12, 2336552879); /* 10 */ + FF ( c, d, a, b, in[10], S13, 4294925233); /* 11 */ + FF ( b, c, d, a, in[11], S14, 2304563134); /* 12 */ + FF ( a, b, c, d, in[12], S11, 1804603682); /* 13 */ + FF ( d, a, b, c, in[13], S12, 4254626195); /* 14 */ + FF ( c, d, a, b, in[14], S13, 2792965006); /* 15 */ + FF ( b, c, d, a, in[15], S14, 1236535329); /* 16 */ + + /* Round 2 */ +#define S21 5 +#define S22 9 +#define S23 14 +#define S24 20 + GG ( a, b, c, d, in[ 1], S21, 4129170786); /* 17 */ + GG ( d, a, b, c, in[ 6], S22, 3225465664); /* 18 */ + GG ( c, d, a, b, in[11], S23, 643717713); /* 19 */ + GG ( b, c, d, a, in[ 0], S24, 3921069994); /* 20 */ + GG ( a, b, c, d, in[ 5], S21, 3593408605); /* 21 */ + GG ( d, a, b, c, in[10], S22, 38016083); /* 22 */ + GG ( c, d, a, b, in[15], S23, 3634488961); /* 23 */ + GG ( b, c, d, a, in[ 4], S24, 3889429448); /* 24 */ + GG ( a, b, c, d, in[ 9], S21, 568446438); /* 25 */ + GG ( d, a, b, c, in[14], S22, 3275163606); /* 26 */ + GG ( c, d, a, b, in[ 3], S23, 4107603335); /* 27 */ + GG ( b, c, d, a, in[ 8], S24, 1163531501); /* 28 */ + GG ( a, b, c, d, in[13], S21, 2850285829); /* 29 */ + GG ( d, a, b, c, in[ 2], S22, 4243563512); /* 30 */ + GG ( c, d, a, b, in[ 7], S23, 1735328473); /* 31 */ + GG ( b, c, d, a, in[12], S24, 2368359562); /* 32 */ + + /* Round 3 */ +#define S31 4 +#define S32 11 +#define S33 16 +#define S34 23 + HH ( a, b, c, d, in[ 5], S31, 4294588738); /* 33 */ + HH ( d, a, b, c, in[ 8], S32, 2272392833); /* 34 */ + HH ( c, d, a, b, in[11], S33, 1839030562); /* 35 */ + HH ( b, c, d, a, in[14], S34, 4259657740); /* 36 */ + HH ( a, b, c, d, in[ 1], S31, 2763975236); /* 37 */ + HH ( d, a, b, c, in[ 4], S32, 1272893353); /* 38 */ + HH ( c, d, a, b, in[ 7], S33, 4139469664); /* 39 */ + HH ( b, c, d, a, in[10], S34, 3200236656); /* 40 */ + HH ( a, b, c, d, in[13], S31, 681279174); /* 41 */ + HH ( d, a, b, c, in[ 0], S32, 3936430074); /* 42 */ + HH ( c, d, a, b, in[ 3], S33, 3572445317); /* 43 */ + HH ( b, c, d, a, in[ 6], S34, 76029189); /* 44 */ + HH ( a, b, c, d, in[ 9], S31, 3654602809); /* 45 */ + HH ( d, a, b, c, in[12], S32, 3873151461); /* 46 */ + HH ( c, d, a, b, in[15], S33, 530742520); /* 47 */ + HH ( b, c, d, a, in[ 2], S34, 3299628645); /* 48 */ + + /* Round 4 */ +#define S41 6 +#define S42 10 +#define S43 15 +#define S44 21 + II ( a, b, c, d, in[ 0], S41, 4096336452); /* 49 */ + II ( d, a, b, c, in[ 7], S42, 1126891415); /* 50 */ + II ( c, d, a, b, in[14], S43, 2878612391); /* 51 */ + II ( b, c, d, a, in[ 5], S44, 4237533241); /* 52 */ + II ( a, b, c, d, in[12], S41, 1700485571); /* 53 */ + II ( d, a, b, c, in[ 3], S42, 2399980690); /* 54 */ + II ( c, d, a, b, in[10], S43, 4293915773); /* 55 */ + II ( b, c, d, a, in[ 1], S44, 2240044497); /* 56 */ + II ( a, b, c, d, in[ 8], S41, 1873313359); /* 57 */ + II ( d, a, b, c, in[15], S42, 4264355552); /* 58 */ + II ( c, d, a, b, in[ 6], S43, 2734768916); /* 59 */ + II ( b, c, d, a, in[13], S44, 1309151649); /* 60 */ + II ( a, b, c, d, in[ 4], S41, 4149444226); /* 61 */ + II ( d, a, b, c, in[11], S42, 3174756917); /* 62 */ + II ( c, d, a, b, in[ 2], S43, 718787259); /* 63 */ + II ( b, c, d, a, in[ 9], S44, 3951481745); /* 64 */ + + buf[0] += a; + buf[1] += b; + buf[2] += c; + buf[3] += d; +} + +/* + ********************************************************************** + ** End of md5.c ** + ******************************* (cut) ******************************** + */ |