#include "md5.h"
#ifndef HAVE_SSL
#include <string.h>
#undef BYTE_ORDER
#ifdef ARCH_IS_BIG_ENDIAN
# define BYTE_ORDER (ARCH_IS_BIG_ENDIAN ? 1 : -1)
#else
# define BYTE_ORDER 0
#endif
#define T_MASK ((md5_word_t)~0)
#define T1 (T_MASK ^ 0x28955b87)
#define T2 (T_MASK ^ 0x173848a9)
#define T3 0x242070db
#define T4 (T_MASK ^ 0x3e423111)
#define T5 (T_MASK ^ 0x0a83f050)
#define T6 0x4787c62a
#define T7 (T_MASK ^ 0x57cfb9ec)
#define T8 (T_MASK ^ 0x02b96afe)
#define T9 0x698098d8
#define T10 (T_MASK ^ 0x74bb0850)
#define T11 (T_MASK ^ 0x0000a44e)
#define T12 (T_MASK ^ 0x76a32841)
#define T13 0x6b901122
#define T14 (T_MASK ^ 0x02678e6c)
#define T15 (T_MASK ^ 0x5986bc71)
#define T16 0x49b40821
#define T17 (T_MASK ^ 0x09e1da9d)
#define T18 (T_MASK ^ 0x3fbf4cbf)
#define T19 0x265e5a51
#define T20 (T_MASK ^ 0x16493855)
#define T21 (T_MASK ^ 0x29d0efa2)
#define T22 0x02441453
#define T23 (T_MASK ^ 0x275e197e)
#define T24 (T_MASK ^ 0x182c0437)
#define T25 0x21e1cde6
#define T26 (T_MASK ^ 0x3cc8f829)
#define T27 (T_MASK ^ 0x0b2af278)
#define T28 0x455a14ed
#define T29 (T_MASK ^ 0x561c16fa)
#define T30 (T_MASK ^ 0x03105c07)
#define T31 0x676f02d9
#define T32 (T_MASK ^ 0x72d5b375)
#define T33 (T_MASK ^ 0x0005c6bd)
#define T34 (T_MASK ^ 0x788e097e)
#define T35 0x6d9d6122
#define T36 (T_MASK ^ 0x021ac7f3)
#define T37 (T_MASK ^ 0x5b4115bb)
#define T38 0x4bdecfa9
#define T39 (T_MASK ^ 0x0944b49f)
#define T40 (T_MASK ^ 0x4140438f)
#define T41 0x289b7ec6
#define T42 (T_MASK ^ 0x155ed805)
#define T43 (T_MASK ^ 0x2b10cf7a)
#define T44 0x04881d05
#define T45 (T_MASK ^ 0x262b2fc6)
#define T46 (T_MASK ^ 0x1924661a)
#define T47 0x1fa27cf8
#define T48 (T_MASK ^ 0x3b53a99a)
#define T49 (T_MASK ^ 0x0bd6ddbb)
#define T50 0x432aff97
#define T51 (T_MASK ^ 0x546bdc58)
#define T52 (T_MASK ^ 0x036c5fc6)
#define T53 0x655b59c3
#define T54 (T_MASK ^ 0x70f3336d)
#define T55 (T_MASK ^ 0x00100b82)
#define T56 (T_MASK ^ 0x7a7ba22e)
#define T57 0x6fa87e4f
#define T58 (T_MASK ^ 0x01d3191f)
#define T59 (T_MASK ^ 0x5cfebceb)
#define T60 0x4e0811a1
#define T61 (T_MASK ^ 0x08ac817d)
#define T62 (T_MASK ^ 0x42c50dca)
#define T63 0x2ad7d2bb
#define T64 (T_MASK ^ 0x14792c6e)
static void
md5_process(md5_state_t *pms, const md5_byte_t *data )
{
md5_word_t
a = pms->abcd[0], b = pms->abcd[1],
c = pms->abcd[2], d = pms->abcd[3];
md5_word_t t;
#if BYTE_ORDER > 0
md5_word_t X[16];
#else
md5_word_t xbuf[16];
const md5_word_t *X;
#endif
{
#if BYTE_ORDER == 0
static const int w = 1;
if (*((const md5_byte_t *)&w))
#endif
#if BYTE_ORDER <= 0
{
if (!((data - (const md5_byte_t *)0) & 3)) {
X = (const md5_word_t *)data;
} else {
memcpy(xbuf, data, 64);
X = xbuf;
}
}
#endif
#if BYTE_ORDER == 0
else
#endif
#if BYTE_ORDER >= 0
{
const md5_byte_t *xp = data;
int i;
# if BYTE_ORDER == 0
X = xbuf;
# else
# define xbuf X
# endif
for (i = 0; i < 16; ++i, xp += 4)
xbuf[i] = xp[0] + (xp[1] << 8) + (xp[2] << 16) + (xp[3] << 24);
}
#endif
}
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n))))
#define F(x, y, z) (((x) & (y)) | (~(x) & (z)))
#define SET(a, b, c, d, k, s, Ti)\
t = a + F(b,c,d) + X[k] + Ti;\
a = ROTATE_LEFT(t, s) + b
SET(a, b, c, d, 0, 7, T1);
SET(d, a, b, c, 1, 12, T2);
SET(c, d, a, b, 2, 17, T3);
SET(b, c, d, a, 3, 22, T4);
SET(a, b, c, d, 4, 7, T5);
SET(d, a, b, c, 5, 12, T6);
SET(c, d, a, b, 6, 17, T7);
SET(b, c, d, a, 7, 22, T8);
SET(a, b, c, d, 8, 7, T9);
SET(d, a, b, c, 9, 12, T10);
SET(c, d, a, b, 10, 17, T11);
SET(b, c, d, a, 11, 22, T12);
SET(a, b, c, d, 12, 7, T13);
SET(d, a, b, c, 13, 12, T14);
SET(c, d, a, b, 14, 17, T15);
SET(b, c, d, a, 15, 22, T16);
#undef SET
#define G(x, y, z) (((x) & (z)) | ((y) & ~(z)))
#define SET(a, b, c, d, k, s, Ti)\
t = a + G(b,c,d) + X[k] + Ti;\
a = ROTATE_LEFT(t, s) + b
SET(a, b, c, d, 1, 5, T17);
SET(d, a, b, c, 6, 9, T18);
SET(c, d, a, b, 11, 14, T19);
SET(b, c, d, a, 0, 20, T20);
SET(a, b, c, d, 5, 5, T21);
SET(d, a, b, c, 10, 9, T22);
SET(c, d, a, b, 15, 14, T23);
SET(b, c, d, a, 4, 20, T24);
SET(a, b, c, d, 9, 5, T25);
SET(d, a, b, c, 14, 9, T26);
SET(c, d, a, b, 3, 14, T27);
SET(b, c, d, a, 8, 20, T28);
SET(a, b, c, d, 13, 5, T29);
SET(d, a, b, c, 2, 9, T30);
SET(c, d, a, b, 7, 14, T31);
SET(b, c, d, a, 12, 20, T32);
#undef SET
#define H(x, y, z) ((x) ^ (y) ^ (z))
#define SET(a, b, c, d, k, s, Ti)\
t = a + H(b,c,d) + X[k] + Ti;\
a = ROTATE_LEFT(t, s) + b
SET(a, b, c, d, 5, 4, T33);
SET(d, a, b, c, 8, 11, T34);
SET(c, d, a, b, 11, 16, T35);
SET(b, c, d, a, 14, 23, T36);
SET(a, b, c, d, 1, 4, T37);
SET(d, a, b, c, 4, 11, T38);
SET(c, d, a, b, 7, 16, T39);
SET(b, c, d, a, 10, 23, T40);
SET(a, b, c, d, 13, 4, T41);
SET(d, a, b, c, 0, 11, T42);
SET(c, d, a, b, 3, 16, T43);
SET(b, c, d, a, 6, 23, T44);
SET(a, b, c, d, 9, 4, T45);
SET(d, a, b, c, 12, 11, T46);
SET(c, d, a, b, 15, 16, T47);
SET(b, c, d, a, 2, 23, T48);
#undef SET
#define I(x, y, z) ((y) ^ ((x) | ~(z)))
#define SET(a, b, c, d, k, s, Ti)\
t = a + I(b,c,d) + X[k] + Ti;\
a = ROTATE_LEFT(t, s) + b
SET(a, b, c, d, 0, 6, T49);
SET(d, a, b, c, 7, 10, T50);
SET(c, d, a, b, 14, 15, T51);
SET(b, c, d, a, 5, 21, T52);
SET(a, b, c, d, 12, 6, T53);
SET(d, a, b, c, 3, 10, T54);
SET(c, d, a, b, 10, 15, T55);
SET(b, c, d, a, 1, 21, T56);
SET(a, b, c, d, 8, 6, T57);
SET(d, a, b, c, 15, 10, T58);
SET(c, d, a, b, 6, 15, T59);
SET(b, c, d, a, 13, 21, T60);
SET(a, b, c, d, 4, 6, T61);
SET(d, a, b, c, 11, 10, T62);
SET(c, d, a, b, 2, 15, T63);
SET(b, c, d, a, 9, 21, T64);
#undef SET
pms->abcd[0] += a;
pms->abcd[1] += b;
pms->abcd[2] += c;
pms->abcd[3] += d;
}
void
md5_init(md5_state_t *pms)
{
pms->count[0] = pms->count[1] = 0;
pms->abcd[0] = 0x67452301;
pms->abcd[1] = T_MASK ^ 0x10325476;
pms->abcd[2] = T_MASK ^ 0x67452301;
pms->abcd[3] = 0x10325476;
}
void
md5_append(md5_state_t *pms, const md5_byte_t *data, int nbytes)
{
const md5_byte_t *p = data;
int left = nbytes;
int offset = (pms->count[0] >> 3) & 63;
md5_word_t nbits = (md5_word_t)(nbytes << 3);
if (nbytes <= 0)
return;
pms->count[1] += nbytes >> 29;
pms->count[0] += nbits;
if (pms->count[0] < nbits)
pms->count[1]++;
if (offset) {
int copy = (offset + nbytes > 64 ? 64 - offset : nbytes);
memcpy(pms->buf + offset, p, copy);
if (offset + copy < 64)
return;
p += copy;
left -= copy;
md5_process(pms, pms->buf);
}
for (; left >= 64; p += 64, left -= 64)
md5_process(pms, p);
if (left)
memcpy(pms->buf, p, left);
}
void
md5_finish(md5_state_t *pms, md5_byte_t digest[16])
{
static const md5_byte_t pad[64] = {
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
md5_byte_t data[8];
int i;
for (i = 0; i < 8; ++i)
data[i] = (md5_byte_t)(pms->count[i >> 2] >> ((i & 3) << 3));
md5_append(pms, pad, ((55 - (pms->count[0] >> 3)) & 63) + 1);
md5_append(pms, data, 8);
for (i = 0; i < 16; ++i)
digest[i] = (md5_byte_t)(pms->abcd[i >> 2] >> ((i & 3) << 3));
}
#endif