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/*
* Common constants and functions for RIPEMD-128 and RIPEMD-160.
*
* Copyright (C) 2014 Legimet <legimet.calc@gmail.com>
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL I LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL,
* INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS
* SOFTWARE AND ITS DOCUMENTATION, EVEN IF I HAVE BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* I SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND
* I HAVE NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
* ENHANCEMENTS, OR MODIFICATIONS.
*/
#ifndef RMDCOMMON_H
#define RMDCOMMON_H
#include <stdint.h>
/* Initial values */
static const uint32_t initvals[5] = {
0x67452301,
0xefcdab89,
0x98badcfe,
0x10325476,
0xc3d2e1f0
};
/* Added constants */
static const uint32_t k[5] = {
0x5a827999,
0x6ed9eba1,
0x8f1bbcdc,
0xa953fd4e
};
static const uint32_t kprime[5] = {
0x50a28be6,
0x5c4dd124,
0x6d703ef3,
0x7a6d76e9,
};
/* Message selection */
static const int r[80] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
};
static const int rprime[80] = {
5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
};
/* Number of bits for left rotations */
static const int s[80] = {
11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
};
static const int sprime[80] = {
8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
};
static inline uint32_t rmd_f1(uint32_t x, uint32_t y, uint32_t z) {
return x ^ y ^ z;
}
static inline uint32_t rmd_f2(uint32_t x, uint32_t y, uint32_t z) {
return (x & y) | (~x & z);
}
static inline uint32_t rmd_f3(uint32_t x, uint32_t y, uint32_t z) {
return (x | ~y) ^ z;
}
static inline uint32_t rmd_f4(uint32_t x, uint32_t y, uint32_t z) {
return (x & z) | (y & ~z);
}
static inline uint32_t rmd_f5(uint32_t x, uint32_t y, uint32_t z) {
return x ^ (y | ~z);
}
static inline uint32_t rmd_rol(uint32_t n, int bits) {
return ((n << bits) | (n >> (32 - bits)));
}
#endif
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