/* LibTomCrypt, modular cryptographic library -- Tom St Denis
*
* LibTomCrypt is a library that provides various cryptographic
* algorithms in a highly modular and flexible manner.
*
* The library is free for all purposes without any express
* guarantee it works.
*
* Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
*/
#include "tomcrypt.h"
/**
@param rmd128.c
RMD128 Hash function
*/
/* Implementation of RIPEMD-128 based on the source by Antoon Bosselaers, ESAT-COSIC
*
* This source has been radically overhauled to be portable and work within
* the LibTomCrypt API by Tom St Denis
*/
#ifdef RIPEMD128
const struct ltc_hash_descriptor rmd128_desc =
{
"rmd128",
8,
16,
64,
/* OID */
{ 1, 0, 10118, 3, 0, 50 },
6,
&rmd128_init,
&rmd128_process,
&rmd128_done,
&rmd128_test,
NULL
};
/* the four basic functions F(), G() and H() */
#define F(x, y, z) ((x) ^ (y) ^ (z))
#define G(x, y, z) (((x) & (y)) | (~(x) & (z)))
#define H(x, y, z) (((x) | ~(y)) ^ (z))
#define I(x, y, z) (((x) & (z)) | ((y) & ~(z)))
/* the eight basic operations FF() through III() */
#define FF(a, b, c, d, x, s) \
(a) += F((b), (c), (d)) + (x);\
(a) = ROLc((a), (s));
#define GG(a, b, c, d, x, s) \
(a) += G((b), (c), (d)) + (x) + 0x5a827999UL;\
(a) = ROLc((a), (s));
#define HH(a, b, c, d, x, s) \
(a) += H((b), (c), (d)) + (x) + 0x6ed9eba1UL;\
(a) = ROLc((a), (s));
#define II(a, b, c, d, x, s) \
(a) += I((b), (c), (d)) + (x) + 0x8f1bbcdcUL;\
(a) = ROLc((a), (s));
#define FFF(a, b, c, d, x, s) \
(a) += F((b), (c), (d)) + (x);\
(a) = ROLc((a), (s));
#define GGG(a, b, c, d, x, s) \
(a) += G((b), (c), (d)) + (x) + 0x6d703ef3UL;\
(a) = ROLc((a), (s));
#define HHH(a, b, c, d, x, s) \
(a) += H((b), (c), (d)) + (x) + 0x5c4dd124UL;\
(a) = ROLc((a), (s));
#define III(a, b, c, d, x, s) \
(a) += I((b), (c), (d)) + (x) + 0x50a28be6UL;\
(a) = ROLc((a), (s));
#ifdef LTC_CLEAN_STACK
static int _rmd128_compress(hash_state *md, unsigned char *buf)
#else
static int rmd128_compress(hash_state *md, unsigned char *buf)
#endif
{
ulong32 aa,bb,cc,dd,aaa,bbb,ccc,ddd,X[16];
int i;
/* load words X */
for (i = 0; i < 16; i++){
LOAD32L(X[i], buf + (4 * i));
}
/* load state */
aa = aaa = md->rmd128.state[0];
bb = bbb = md->rmd128.state[1];
cc = ccc = md->rmd128.state[2];
dd = ddd = md->rmd128.state[3];
/* round 1 */
FF(aa, bb, cc, dd, X[ 0], 11);
FF(dd, aa, bb, cc, X[ 1], 14);
FF(cc, dd, aa, bb, X[ 2], 15);
FF(bb, cc, dd, aa, X[ 3], 12);
FF(aa, bb, cc, dd, X[ 4], 5);
FF(dd, aa, bb, cc, X[ 5], 8);
FF(cc, dd, aa, bb, X[ 6], 7);
FF(bb, cc, dd, aa, X[ 7], 9);
FF(aa, bb, cc, dd, X[ 8], 11);
FF(dd, aa, bb, cc, X[ 9], 13);
FF(cc, dd, aa, bb, X[10], 14);
FF(bb, cc, dd, aa, X[11], 15);
FF(aa, bb, cc, dd, X[12], 6);
FF(dd, aa, bb, cc, X[13], 7);
FF(cc, dd, aa, bb, X[14], 9);
FF(bb, cc, dd, aa, X[15], 8);
/* round 2 */
GG(aa, bb, cc, dd, X[ 7], 7);
GG(dd, aa, bb, cc, X[ 4], 6);
GG(cc, dd, aa, bb, X[13], 8);
GG(bb, cc, dd, aa, X[ 1], 13);
GG(aa, bb, cc, dd, X[10], 11);
GG(dd, aa, bb, cc, X[ 6], 9);
GG(cc, dd, aa, bb, X[15], 7);
GG(bb, cc, dd, aa, X[ 3], 15);
GG(aa, bb, cc, dd, X[12], 7);
GG(dd, aa, bb, cc, X[ 0], 12);
GG(cc, dd, aa, bb, X[ 9], 15);
GG(bb, cc, dd, aa, X[ 5], 9);
GG(aa, bb, cc, dd, X[ 2], 11);
GG(dd, aa, bb, cc, X[14], 7);
GG(cc, dd, aa, bb, X[11], 13);
GG(bb, cc, dd, aa, X[ 8], 12);
/* round 3 */
HH(aa, bb, cc, dd, X[ 3], 11);
HH(dd, aa, bb, cc, X[10], 13);
HH(cc, dd, aa, bb, X[14], 6);
HH(bb, cc, dd, aa, X[ 4], 7);
HH(aa, bb, cc, dd, X[ 9], 14);
HH(dd, aa, bb, cc, X[15], 9);
HH(cc, dd, aa, bb, X[ 8], 13);
HH(bb, cc, dd, aa, X[ 1], 15);
HH(aa, bb, cc, dd, X[ 2], 14);
HH(dd, aa, bb, cc, X[ 7], 8);
HH(cc, dd, aa, bb, X[ 0], 13);
HH(bb, cc, dd, aa, X[ 6], 6);
HH(aa, bb, cc, dd, X[13], 5);
HH(dd, aa, bb, cc, X[11], 12);
HH(cc, dd, aa, bb, X[ 5], 7);
HH(bb, cc, dd, aa, X[12], 5);
/* round 4 */
II(aa, bb, cc, dd, X[ 1], 11);
II(dd, aa, bb, cc, X[ 9], 12);
II(cc, dd, aa, bb, X[11], 14);
II(bb, cc, dd, aa, X[10], 15);
II(aa, bb, cc, dd, X[ 0], 14);
II(dd, aa, bb, cc, X[ 8], 15);
II(cc, dd, aa, bb, X[12], 9);
II(bb, cc, dd, aa, X[ 4], 8);
II(aa, bb, cc, dd, X[13], 9);
II(dd, aa, bb, cc, X[ 3], 14);
II(cc, dd, aa, bb, X[ 7], 5);
II(bb, cc, dd, aa, X[15], 6);
II(aa, bb, cc, dd, X[14], 8);
II(dd, aa, bb, cc, X[ 5], 6);
II(cc, dd, aa, bb, X[ 6], 5);
II(bb, cc, dd, aa, X[ 2], 12);
/* parallel round 1 */
III(aaa, bbb, ccc, ddd, X[ 5], 8);
III(ddd, aaa, bbb, ccc, X[14], 9);
III(ccc, ddd, aaa, bbb, X[ 7], 9);
III(bbb, ccc, ddd, aaa, X[ 0], 11);
III(aaa, bbb, ccc, ddd, X[ 9], 13);
III(ddd, aaa, bbb, ccc, X[ 2], 15);
III(ccc, ddd, aaa, bbb, X[11], 15);
III(bbb, ccc, ddd, aaa, X[ 4], 5);
III(aaa, bbb, ccc, ddd, X[13], 7);
III(ddd, aaa, bbb, ccc, X[ 6], 7);
III(ccc, ddd, aaa, bbb, X[15], 8);
III(bbb, ccc, ddd, aaa, X[ 8], 11);
III(aaa, bbb, ccc, ddd, X[ 1], 14);
III(ddd, aaa, bbb, ccc, X[10], 14);
III(ccc, ddd, aaa, bbb, X[ 3], 12);
III(bbb, ccc, ddd, aaa, X[12], 6);
/* parallel round 2 */
HHH(aaa, bbb, ccc, ddd, X[ 6], 9);
HHH(ddd, aaa, bbb, ccc, X[11], 13);
HHH(ccc, ddd, aaa, bbb, X[ 3], 15);
HHH(bbb, ccc, ddd, aaa, X[ 7], 7);
HHH(aaa, bbb, ccc, ddd, X[ 0], 12);
HHH(ddd, aaa, bbb, ccc, X[13], 8);
HHH(ccc, ddd, aaa, bbb, X[ 5], 9);
HHH(bbb, ccc, ddd, aaa, X[10], 11);
HHH(aaa, bbb, ccc, ddd, X[14], 7);
HHH(ddd, aaa, bbb, ccc, X[15], 7);
HHH(ccc, ddd, aaa, bbb, X[ 8], 12);
HHH(bbb, ccc, ddd, aaa, X[12], 7);
HHH(aaa, bbb, ccc, ddd, X[ 4], 6);
HHH(ddd, aaa, bbb, ccc, X[ 9], 15);
HHH(ccc, ddd, aaa, bbb, X[ 1], 13);
HHH(bbb, ccc, ddd, aaa, X[ 2], 11);
/* parallel round 3 */
GGG(aaa, bbb, ccc, ddd, X[15], 9);
GGG(ddd, aaa, bbb, ccc, X[ 5], 7);
GGG(ccc, ddd, aaa, bbb, X[ 1], 15);
GGG(bbb, ccc, ddd, aaa, X[ 3], 11);
GGG(aaa, bbb, ccc, ddd, X[ 7], 8);
GGG(ddd, aaa, bbb, ccc, X[14], 6);
GGG(ccc, ddd, aaa, bbb, X[ 6], 6);
GGG(bbb, ccc, ddd, aaa, X[ 9], 14);
GGG(aaa, bbb, ccc, ddd, X[11], 12);
GGG(ddd, aaa, bbb, ccc, X[ 8], 13);
GGG(ccc, ddd, aaa, bbb, X[12], 5);
GGG(bbb, ccc, ddd, aaa, X[ 2], 14);
GGG(aaa, bbb, ccc, ddd, X[10], 13);
GGG(ddd, aaa, bbb, ccc, X[ 0], 13);
GGG(ccc, ddd, aaa, bbb, X[ 4], 7);
GGG(bbb, ccc, ddd, aaa, X[13], 5);
/* parallel round 4 */
FFF(aaa, bbb, ccc, ddd, X[ 8], 15);
FFF(ddd, aaa, bbb, ccc, X[ 6], 5);
FFF(ccc, ddd, aaa, bbb, X[ 4], 8);
FFF(bbb, ccc, ddd, aaa, X[ 1], 11);
FFF(aaa, bbb, ccc, ddd, X[ 3], 14);
FFF(ddd, aaa, bbb, ccc, X[11], 14);
FFF(ccc, ddd, aaa, bbb, X[15], 6);
FFF(bbb, ccc, ddd, aaa, X[ 0], 14);
FFF(aaa, bbb, ccc, ddd, X[ 5], 6);
FFF(ddd, aaa, bbb, ccc, X[12], 9);
FFF(ccc, ddd, aaa, bbb, X[ 2], 12);
FFF(bbb, ccc, ddd, aaa, X[13], 9);
FFF(aaa, bbb, ccc, ddd, X[ 9], 12);
FFF(ddd, aaa, bbb, ccc, X[ 7], 5);
FFF(ccc, ddd, aaa, bbb, X[10], 15);
FFF(bbb, ccc, ddd, aaa, X[14], 8);
/* combine results */
ddd += cc + md->rmd128.state[1]; /* final result for MDbuf[0] */
md->rmd128.state[1] = md->rmd128.state[2] + dd + aaa;
md->rmd128.state[2] = md->rmd128.state[3] + aa + bbb;
md->rmd128.state[3] = md->rmd128.state[0] + bb + ccc;
md->rmd128.state[0] = ddd;
return CRYPT_OK;
}
#ifdef LTC_CLEAN_STACK
static int rmd128_compress(hash_state *md, unsigned char *buf)
{
int err;
err = _rmd128_compress(md, buf);
burn_stack(sizeof(ulong32) * 24 + sizeof(int));
return err;
}
#endif
/**
Initialize the hash state
@param md The hash state you wish to initialize
@return CRYPT_OK if successful
*/
int rmd128_init(hash_state * md)
{
LTC_ARGCHK(md != NULL);
md->rmd128.state[0] = 0x67452301UL;
md->rmd128.state[1] = 0xefcdab89UL;
md->rmd128.state[2] = 0x98badcfeUL;
md->rmd128.state[3] = 0x10325476UL;
md->rmd128.curlen = 0;
md->rmd128.length = 0;
return CRYPT_OK;
}
/**
Process a block of memory though the hash
@param md The hash state
@param in The data to hash
@param inlen The length of the data (octets)
@return CRYPT_OK if successful
*/
HASH_PROCESS(rmd128_process, rmd128_compress, rmd128, 64)
/**
Terminate the hash to get the digest
@param md The hash state
@param out [out] The destination of the hash (16 bytes)
@return CRYPT_OK if successful
*/
int rmd128_done(hash_state * md, unsigned char *out)
{
int i;
LTC_ARGCHK(md != NULL);
LTC_ARGCHK(out != NULL);
if (md->rmd128.curlen >= sizeof(md->rmd128.buf)) {
return CRYPT_INVALID_ARG;
}
/* increase the length of the message */
md->rmd128.length += md->rmd128.curlen * 8;
/* append the '1' bit */
md->rmd128.buf[md->rmd128.curlen++] = (unsigned char)0x80;
/* if the length is currently above 56 bytes we append zeros
* then compress. Then we can fall back to padding zeros and length
* encoding like normal.
*/
if (md->rmd128.curlen > 56) {
while (md->rmd128.curlen < 64) {
md->rmd128.buf[md->rmd128.curlen++] = (unsigned char)0;
}
rmd128_compress(md, md->rmd128.buf);
md->rmd128.curlen = 0;
}
/* pad upto 56 bytes of zeroes */
while (md->rmd128.curlen < 56) {
md->rmd128.buf[md->rmd128.curlen++] = (unsigned char)0;
}
/* store length */
STORE64L(md->rmd128.length, md->rmd128.buf+56);
rmd128_compress(md, md->rmd128.buf);
/* copy output */
for (i = 0; i < 4; i++) {
STORE32L(md->rmd128.state[i], out+(4*i));
}
#ifdef LTC_CLEAN_STACK
zeromem(md, sizeof(hash_state));
#endif
return CRYPT_OK;
}
/**
Self-test the hash
@return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
*/
int rmd128_test(void)
{
#ifndef LTC_TEST
return CRYPT_NOP;
#else
static const struct {
char *msg;
unsigned char md[16];
} tests[] = {
{ "",
{ 0xcd, 0xf2, 0x62, 0x13, 0xa1, 0x50, 0xdc, 0x3e,
0xcb, 0x61, 0x0f, 0x18, 0xf6, 0xb3, 0x8b, 0x46 }
},
{ "a",
{ 0x86, 0xbe, 0x7a, 0xfa, 0x33, 0x9d, 0x0f, 0xc7,
0xcf, 0xc7, 0x85, 0xe7, 0x2f, 0x57, 0x8d, 0x33 }
},
{ "abc",
{ 0xc1, 0x4a, 0x12, 0x19, 0x9c, 0x66, 0xe4, 0xba,
0x84, 0x63, 0x6b, 0x0f, 0x69, 0x14, 0x4c, 0x77 }
},
{ "message digest",
{ 0x9e, 0x32, 0x7b, 0x3d, 0x6e, 0x52, 0x30, 0x62,
0xaf, 0xc1, 0x13, 0x2d, 0x7d, 0xf9, 0xd1, 0xb8 }
},
{ "abcdefghijklmnopqrstuvwxyz",
{ 0xfd, 0x2a, 0xa6, 0x07, 0xf7, 0x1d, 0xc8, 0xf5,
0x10, 0x71, 0x49, 0x22, 0xb3, 0x71, 0x83, 0x4e }
},
{ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
{ 0xd1, 0xe9, 0x59, 0xeb, 0x17, 0x9c, 0x91, 0x1f,
0xae, 0xa4, 0x62, 0x4c, 0x60, 0xc5, 0xc7, 0x02 }
}
};
int x;
unsigned char buf[16];
hash_state md;
for (x = 0; x < (int)(sizeof(tests)/sizeof(tests[0])); x++) {
rmd128_init(&md);
rmd128_process(&md, (unsigned char *)tests[x].msg, strlen(tests[x].msg));
rmd128_done(&md, buf);
if (XMEMCMP(buf, tests[x].md, 16) != 0) {
#if 0
printf("Failed test %d\n", x);
#endif
return CRYPT_FAIL_TESTVECTOR;
}
}
return CRYPT_OK;
#endif
}
#endif
/* $Source: /cvs/libtom/libtomcrypt/src/hashes/rmd128.c,v $ */
/* $Revision: 1.9 $ */
/* $Date: 2006/11/01 09:28:17 $ */