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#include "global.h"
1 ~. s! g9 |; C/ ?' g) [4 j' G#include "md5.h"
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. K7 B; x* @! ]5 N* |$ Y/* Constants for MD5Transform routine.
*/
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+ B7 ^$ L1 o+ K& }1 Q* a3 _#define S11 7
* s+ q8 P) P/ t7 }9 Y#define S12 12
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#define S13 17
$ J1 b$ e7 k6 z; ?( ]#define S14 22
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#define S21 5
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#define S22 9
Z. b, u4 S. W8 B/ E- a/ _#define S23 14
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#define S24 20
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#define S31 4
& L3 ]' j/ q! w& y#define S32 11
3 M; ?, w" `& s3 v8 ?7 a#define S33 16
2 `' D% X& x' e& B3 `9 ]#define S34 23
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#define S41 6
" P( l4 u8 J- T; ?0 [/ c#define S42 10
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#define S43 15
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#define S44 21
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static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
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static void Encode PROTO_LIST
((unsigned char *, UINT4 *, unsigned int));
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static void Decode PROTO_LIST
((UINT4 *, unsigned char *, unsigned int));
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static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
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static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
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, a; \1 n( B: J4 T5 r) W4 ^3 ~. Q( ?static unsigned char PADDING[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
3 x8 v& W1 L% d1 B};
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/* F, G, H and I are basic MD5 functions.
*/
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#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
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#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
% ]. `* Q$ O5 i- J#define H(x, y, z) ((x) ^ (y) ^ (z))
# S5 J! w) h5 G3 ^/ f" }; }#define I(x, y, z) ((y) ^ ((x) | (~z)))
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/* ROTATE_LEFT rotates x left n bits.
*/
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#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
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/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
2 U5 r7 e$ {0 a. f+ W+ fRotation is separate from addition to prevent recomputation.
*/
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#define FF(a, b, c, d, x, s, ac) { \
(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
* {2 [. k$ s! ?5 m1 \! x4 B#define GG(a, b, c, d, x, s, ac) { \
(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
; g v! c& a7 h# R; o#define HH(a, b, c, d, x, s, ac) { \
(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
" Z; b4 [8 S) N* G#define II(a, b, c, d, x, s, ac) { \
(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
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/* MD5 initialization. Begins an MD5 operation, writing a new context.
*/
: o- l. G& s* m0 Kvoid MD5Init (context)
# s+ v, i( r" r4 r- YMD5_CTX *context; /* context */
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{
context->count[0] = context->count[1] = 0;
/* Load magic initialization constants.
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*/
context->state[0] = 0x67452301;
context->state[1] = 0xefcdab89;
context->state[2] = 0x98badcfe;
context->state[3] = 0x10325476;
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}
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1 U, ]0 s6 S" A! U2 h5 u1 |/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
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void MD5Update (context, input, inputLen)
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MD5_CTX *context; /* context */
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unsigned char *input; /* input block */
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unsigned int inputLen; /* length of input block */
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{
unsigned int i, index, partLen;
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/* Compute number of bytes mod 64 */
index = (unsigned int)((context->count[0] >> 3) & 0x3F);
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/* Update number of bits */
if ((context->count[0] += ((UINT4)inputLen << 3))
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发表于 2004-11-26 20:11:20
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