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/*
* MD5 Message Digest Algorithm (RFC1321).
*
* Derived from cryptoapi implementation, originally based on the
* public domain implementation written by Colin Plumb in 1993.
*
* Copyright (c) Cryptoapi developers.
* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
*
* 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.
*/
#include "md5.h"
#define MD5_F1(x, y, z) (z ^ (x & (y ^ z)))
#define MD5_F2(x, y, z) MD5_F1(z, x, y)
#define MD5_F3(x, y, z) (x ^ y ^ z)
#define MD5_F4(x, y, z) (y ^ (x | ~z))
#define MD5_STEP(f, w, x, y, z, in, s) \
(w += f(x, y, z) + in, w = (w<<s | w>>(32-s)) + x)
void md5_transform_CPUbyteorder(u_int32_t *hash, u_int32_t const *in)
{
u_int32_t a, b, c, d;
a = hash[0];
b = hash[1];
c = hash[2];
d = hash[3];
MD5_STEP(MD5_F1, a, b, c, d, in[0] + 0xd76aa478, 7);
MD5_STEP(MD5_F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
MD5_STEP(MD5_F1, c, d, a, b, in[2] + 0x242070db, 17);
MD5_STEP(MD5_F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
MD5_STEP(MD5_F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
MD5_STEP(MD5_F1, d, a, b, c, in[5] + 0x4787c62a, 12);
MD5_STEP(MD5_F1, c, d, a, b, in[6] + 0xa8304613, 17);
MD5_STEP(MD5_F1, b, c, d, a, in[7] + 0xfd469501, 22);
MD5_STEP(MD5_F1, a, b, c, d, in[8] + 0x698098d8, 7);
MD5_STEP(MD5_F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
MD5_STEP(MD5_F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
MD5_STEP(MD5_F1, b, c, d, a, in[11] + 0x895cd7be, 22);
MD5_STEP(MD5_F1, a, b, c, d, in[12] + 0x6b901122, 7);
MD5_STEP(MD5_F1, d, a, b, c, in[13] + 0xfd987193, 12);
MD5_STEP(MD5_F1, c, d, a, b, in[14] + 0xa679438e, 17);
MD5_STEP(MD5_F1, b, c, d, a, in[15] + 0x49b40821, 22);
MD5_STEP(MD5_F2, a, b, c, d, in[1] + 0xf61e2562, 5);
MD5_STEP(MD5_F2, d, a, b, c, in[6] + 0xc040b340, 9);
MD5_STEP(MD5_F2, c, d, a, b, in[11] + 0x265e5a51, 14);
MD5_STEP(MD5_F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
MD5_STEP(MD5_F2, a, b, c, d, in[5] + 0xd62f105d, 5);
MD5_STEP(MD5_F2, d, a, b, c, in[10] + 0x02441453, 9);
MD5_STEP(MD5_F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
MD5_STEP(MD5_F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
MD5_STEP(MD5_F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
MD5_STEP(MD5_F2, d, a, b, c, in[14] + 0xc33707d6, 9);
MD5_STEP(MD5_F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
MD5_STEP(MD5_F2, b, c, d, a, in[8] + 0x455a14ed, 20);
MD5_STEP(MD5_F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
MD5_STEP(MD5_F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
MD5_STEP(MD5_F2, c, d, a, b, in[7] + 0x676f02d9, 14);
MD5_STEP(MD5_F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
MD5_STEP(MD5_F3, a, b, c, d, in[5] + 0xfffa3942, 4);
MD5_STEP(MD5_F3, d, a, b, c, in[8] + 0x8771f681, 11);
MD5_STEP(MD5_F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
MD5_STEP(MD5_F3, b, c, d, a, in[14] + 0xfde5380c, 23);
MD5_STEP(MD5_F3, a, b, c, d, in[1] + 0xa4beea44, 4);
MD5_STEP(MD5_F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
MD5_STEP(MD5_F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
MD5_STEP(MD5_F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
MD5_STEP(MD5_F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
MD5_STEP(MD5_F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
MD5_STEP(MD5_F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
MD5_STEP(MD5_F3, b, c, d, a, in[6] + 0x04881d05, 23);
MD5_STEP(MD5_F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
MD5_STEP(MD5_F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
MD5_STEP(MD5_F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
MD5_STEP(MD5_F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
MD5_STEP(MD5_F4, a, b, c, d, in[0] + 0xf4292244, 6);
MD5_STEP(MD5_F4, d, a, b, c, in[7] + 0x432aff97, 10);
MD5_STEP(MD5_F4, c, d, a, b, in[14] + 0xab9423a7, 15);
MD5_STEP(MD5_F4, b, c, d, a, in[5] + 0xfc93a039, 21);
MD5_STEP(MD5_F4, a, b, c, d, in[12] + 0x655b59c3, 6);
MD5_STEP(MD5_F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
MD5_STEP(MD5_F4, c, d, a, b, in[10] + 0xffeff47d, 15);
MD5_STEP(MD5_F4, b, c, d, a, in[1] + 0x85845dd1, 21);
MD5_STEP(MD5_F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
MD5_STEP(MD5_F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
MD5_STEP(MD5_F4, c, d, a, b, in[6] + 0xa3014314, 15);
MD5_STEP(MD5_F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
MD5_STEP(MD5_F4, a, b, c, d, in[4] + 0xf7537e82, 6);
MD5_STEP(MD5_F4, d, a, b, c, in[11] + 0xbd3af235, 10);
MD5_STEP(MD5_F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
MD5_STEP(MD5_F4, b, c, d, a, in[9] + 0xeb86d391, 21);
hash[0] += a;
hash[1] += b;
hash[2] += c;
hash[3] += d;
}
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