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