#include "tomcrypt.h"
#ifdef MD4
const
struct
ltc_hash_descriptor md4_desc =
{
"md4"
,
6,
16,
64,
{ 1, 2, 840, 113549, 2, 4, },
6,
&md4_init,
&md4_process,
&md4_done,
&md4_test,
NULL
};
#define S11 3
#define S12 7
#define S13 11
#define S14 19
#define S21 3
#define S22 5
#define S23 9
#define S24 13
#define S31 3
#define S32 9
#define S33 11
#define S34 15
#define F(x, y, z) (z ^ (x & (y ^ z)))
#define G(x, y, z) ((x & y) | (z & (x | y)))
#define H(x, y, z) ((x) ^ (y) ^ (z))
#define ROTATE_LEFT(x, n) ROLc(x, n)
#define FF(a, b, c, d, x, s) { \
(a) += F ((b), (c), (d)) + (x); \
(a) = ROTATE_LEFT ((a), (s)); \
}
#define GG(a, b, c, d, x, s) { \
(a) += G ((b), (c), (d)) + (x) + 0x5a827999UL; \
(a) = ROTATE_LEFT ((a), (s)); \
}
#define HH(a, b, c, d, x, s) { \
(a) += H ((b), (c), (d)) + (x) + 0x6ed9eba1UL; \
(a) = ROTATE_LEFT ((a), (s)); \
}
#ifdef LTC_CLEAN_STACK
static
int
_md4_compress(hash_state *md, unsigned
char
*buf)
#else
static
int
md4_compress(hash_state *md, unsigned
char
*buf)
#endif
{
ulong32 x[16], a, b, c, d;
int
i;
a = md->md4.state[0];
b = md->md4.state[1];
c = md->md4.state[2];
d = md->md4.state[3];
for
(i = 0; i < 16; i++) {
LOAD32L(x[i], buf + (4*i));
}
FF (a, b, c, d, x[ 0], S11);
FF (d, a, b, c, x[ 1], S12);
FF (c, d, a, b, x[ 2], S13);
FF (b, c, d, a, x[ 3], S14);
FF (a, b, c, d, x[ 4], S11);
FF (d, a, b, c, x[ 5], S12);
FF (c, d, a, b, x[ 6], S13);
FF (b, c, d, a, x[ 7], S14);
FF (a, b, c, d, x[ 8], S11);
FF (d, a, b, c, x[ 9], S12);
FF (c, d, a, b, x[10], S13);
FF (b, c, d, a, x[11], S14);
FF (a, b, c, d, x[12], S11);
FF (d, a, b, c, x[13], S12);
FF (c, d, a, b, x[14], S13);
FF (b, c, d, a, x[15], S14);
GG (a, b, c, d, x[ 0], S21);
GG (d, a, b, c, x[ 4], S22);
GG (c, d, a, b, x[ 8], S23);
GG (b, c, d, a, x[12], S24);
GG (a, b, c, d, x[ 1], S21);
GG (d, a, b, c, x[ 5], S22);
GG (c, d, a, b, x[ 9], S23);
GG (b, c, d, a, x[13], S24);
GG (a, b, c, d, x[ 2], S21);
GG (d, a, b, c, x[ 6], S22);
GG (c, d, a, b, x[10], S23);
GG (b, c, d, a, x[14], S24);
GG (a, b, c, d, x[ 3], S21);
GG (d, a, b, c, x[ 7], S22);
GG (c, d, a, b, x[11], S23);
GG (b, c, d, a, x[15], S24);
HH (a, b, c, d, x[ 0], S31);
HH (d, a, b, c, x[ 8], S32);
HH (c, d, a, b, x[ 4], S33);
HH (b, c, d, a, x[12], S34);
HH (a, b, c, d, x[ 2], S31);
HH (d, a, b, c, x[10], S32);
HH (c, d, a, b, x[ 6], S33);
HH (b, c, d, a, x[14], S34);
HH (a, b, c, d, x[ 1], S31);
HH (d, a, b, c, x[ 9], S32);
HH (c, d, a, b, x[ 5], S33);
HH (b, c, d, a, x[13], S34);
HH (a, b, c, d, x[ 3], S31);
HH (d, a, b, c, x[11], S32);
HH (c, d, a, b, x[ 7], S33);
HH (b, c, d, a, x[15], S34);
md->md4.state[0] = md->md4.state[0] + a;
md->md4.state[1] = md->md4.state[1] + b;
md->md4.state[2] = md->md4.state[2] + c;
md->md4.state[3] = md->md4.state[3] + d;
return
CRYPT_OK;
}
#ifdef LTC_CLEAN_STACK
static
int
md4_compress(hash_state *md, unsigned
char
*buf)
{
int
err;
err = _md4_compress(md, buf);
burn_stack(
sizeof
(ulong32) * 20 +
sizeof
(
int
));
return
err;
}
#endif
int
md4_init(hash_state * md)
{
LTC_ARGCHK(md != NULL);
md->md4.state[0] = 0x67452301UL;
md->md4.state[1] = 0xefcdab89UL;
md->md4.state[2] = 0x98badcfeUL;
md->md4.state[3] = 0x10325476UL;
md->md4.length = 0;
md->md4.curlen = 0;
return
CRYPT_OK;
}
HASH_PROCESS(md4_process, md4_compress, md4, 64)
int
md4_done(hash_state * md, unsigned
char
*out)
{
int
i;
LTC_ARGCHK(md != NULL);
LTC_ARGCHK(out != NULL);
if
(md->md4.curlen >=
sizeof
(md->md4.buf)) {
return
CRYPT_INVALID_ARG;
}
md->md4.length += md->md4.curlen * 8;
md->md4.buf[md->md4.curlen++] = (unsigned
char
)0x80;
if
(md->md4.curlen > 56) {
while
(md->md4.curlen < 64) {
md->md4.buf[md->md4.curlen++] = (unsigned
char
)0;
}
md4_compress(md, md->md4.buf);
md->md4.curlen = 0;
}
while
(md->md4.curlen < 56) {
md->md4.buf[md->md4.curlen++] = (unsigned
char
)0;
}
STORE64L(md->md4.length, md->md4.buf+56);
md4_compress(md, md->md4.buf);
for
(i = 0; i < 4; i++) {
STORE32L(md->md4.state[i], out+(4*i));
}
#ifdef LTC_CLEAN_STACK
zeromem(md,
sizeof
(hash_state));
#endif
return
CRYPT_OK;
}
int
md4_test(
void
)
{
#ifndef LTC_TEST
return
CRYPT_NOP;
#else
static
const
struct
md4_test_case {
char
*input;
unsigned
char
digest[16];
} cases[] = {
{
""
,
{0x31, 0xd6, 0xcf, 0xe0, 0xd1, 0x6a, 0xe9, 0x31,
0xb7, 0x3c, 0x59, 0xd7, 0xe0, 0xc0, 0x89, 0xc0} },
{
"a"
,
{0xbd, 0xe5, 0x2c, 0xb3, 0x1d, 0xe3, 0x3e, 0x46,
0x24, 0x5e, 0x05, 0xfb, 0xdb, 0xd6, 0xfb, 0x24} },
{
"abc"
,
{0xa4, 0x48, 0x01, 0x7a, 0xaf, 0x21, 0xd8, 0x52,
0x5f, 0xc1, 0x0a, 0xe8, 0x7a, 0xa6, 0x72, 0x9d} },
{
"message digest"
,
{0xd9, 0x13, 0x0a, 0x81, 0x64, 0x54, 0x9f, 0xe8,
0x18, 0x87, 0x48, 0x06, 0xe1, 0xc7, 0x01, 0x4b} },
{
"abcdefghijklmnopqrstuvwxyz"
,
{0xd7, 0x9e, 0x1c, 0x30, 0x8a, 0xa5, 0xbb, 0xcd,
0xee, 0xa8, 0xed, 0x63, 0xdf, 0x41, 0x2d, 0xa9} },
{
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
,
{0x04, 0x3f, 0x85, 0x82, 0xf2, 0x41, 0xdb, 0x35,
0x1c, 0xe6, 0x27, 0xe1, 0x53, 0xe7, 0xf0, 0xe4} },
{
"12345678901234567890123456789012345678901234567890123456789012345678901234567890"
,
{0xe3, 0x3b, 0x4d, 0xdc, 0x9c, 0x38, 0xf2, 0x19,
0x9c, 0x3e, 0x7b, 0x16, 0x4f, 0xcc, 0x05, 0x36} },
};
int
i;
hash_state md;
unsigned
char
digest[16];
for
(i = 0; i < (
int
)(
sizeof
(cases) /
sizeof
(cases[0])); i++) {
md4_init(&md);
md4_process(&md, (unsigned
char
*)cases[i].input, (unsigned
long
)
strlen
(cases[i].input));
md4_done(&md, digest);
if
(XMEMCMP(digest, cases[i].digest, 16) != 0) {
return
CRYPT_FAIL_TESTVECTOR;
}
}
return
CRYPT_OK;
#endif
}
#endif