diff options
Diffstat (limited to 'libtomcrypt/src/hashes/rmd128.c')
| -rw-r--r-- | libtomcrypt/src/hashes/rmd128.c | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/libtomcrypt/src/hashes/rmd128.c b/libtomcrypt/src/hashes/rmd128.c new file mode 100644 index 0000000..d294626 --- /dev/null +++ b/libtomcrypt/src/hashes/rmd128.c @@ -0,0 +1,410 @@ +/* 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 $ */ |