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#include "global.h"
. G* N# L) |: G$ p: i, p; }- V#include "md5.h"
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" X3 O9 q p0 Y" R, C- L4 w/* Constants for MD5Transform routine.
*/
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7 N) G4 w- l% \, l4 E& y#define S11 7
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#define S12 12
- V6 E6 n7 i) U2 ~ s ?9 M#define S13 17
* P% W6 v# f4 @, ?8 Q# ~/ u4 H#define S14 22
0 m1 N5 W- y B* i8 H7 u s#define S21 5
- g# O! I9 m ^7 ^8 o1 e#define S22 9
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#define S23 14
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#define S24 20
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#define S31 4
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#define S32 11
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#define S33 16
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#define S34 23
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#define S41 6
1 f! }" X3 o$ G7 e' H% a4 o/ W- k6 M#define S42 10
$ w# `, l& R# |2 T/ S' O3 ?/ m#define S43 15
6 G6 z7 M! s. a ~0 l#define S44 21
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. p" m+ ^# _9 E/ ^/ d: kstatic void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
6 y; o# {+ k5 }, d& p2 t$ A, U- Z9 H7 hstatic void Encode PROTO_LIST
((unsigned char *, UINT4 *, unsigned int));
8 H( ?) q; P2 X9 L. j' w. i2 qstatic void Decode PROTO_LIST
((UINT4 *, unsigned char *, unsigned int));
3 O0 E Y7 S1 y' O+ Xstatic void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
$ d$ _8 N7 }# q) C+ t0 {
static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
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5 d! F. X- Q+ @( f; ]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
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};
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/* F, G, H and I are basic MD5 functions.
*/
* R5 U; i& g$ ]) Q3 c#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
8 B, ^; a4 j' x#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
! l& s1 Y( O4 Q+ ^6 D& J+ K4 F/ ^#define H(x, y, z) ((x) ^ (y) ^ (z))
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#define I(x, y, z) ((y) ^ ((x) | (~z)))
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- ?) G( t* x7 |- j. s/ M6 C( G; v& y/* ROTATE_LEFT rotates x left n bits.
*/
& O9 d3 _ o3 k# c0 N#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.
; f/ i$ ?8 \& ~
Rotation 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); \
}
' s- S. t2 f# T#define GG(a, b, c, d, x, s, ac) { \
(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
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#define HH(a, b, c, d, x, s, ac) { \
(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
- C# Y( x2 r* p% t6 b4 e3 ~#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.
*/
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void MD5Init (context)
0 b$ V) h+ `) e) j! D9 N& W+ v) JMD5_CTX *context; /* context */
8 z" P- [5 g7 |2 y$ v) A$ D{
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;
0 }. \4 B: L% K6 D5 B7 \}
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. I9 ?5 |8 H4 r# a- @1 o/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
% k2 v+ t$ ~' @- I- J) uvoid MD5Update (context, input, inputLen)
: Z" h: G* `1 s8 dMD5_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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