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#include "global.h"
0 l( L/ t9 R$ r1 h$ d#include "md5.h"
* |" H: Y# g. O) p6 v+ R
; s1 s+ }; O5 V" R- g0 j0 V+ |0 _$ Q/* Constants for MD5Transform routine.
*/
; S3 }" x% R0 b) y
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9 n2 B; ~+ u( S$ n* G7 J) h#define S11 7
) M0 h: G6 q2 o8 L$ ~8 j#define S12 12
5 f: u* k! B' }- j0 g$ }
#define S13 17
/ Q( r7 b/ q7 E6 }
#define S14 22
: N* d5 G' z. K5 S. F! W#define S21 5
7 ] ?1 ?( F0 J3 ], V0 }
#define S22 9
% g: w4 z R2 W$ L( s#define S23 14
0 t" j' M( `: g" _, v/ p( b {) t# u#define S24 20
1 _/ G3 F8 R# S; i$ ?1 I0 P
#define S31 4
( R; w$ K8 u: N# l7 g) Q, L7 ^: R! V#define S32 11
9 T/ j4 Z `# \1 S# e
#define S33 16
7 a8 Y6 q: V2 i3 ?) j& W+ d#define S34 23
) L- i. K- S( |! S0 `* z- Z#define S41 6
* }% T8 c% @% N#define S42 10
4 A: h8 M/ s8 C3 T u
#define S43 15
4 w" _* C7 @ _$ i
#define S44 21
# z) F5 _( j3 ^- v
3 d* V& i# Z0 ?. i2 l9 w" `+ p9 z1 Wstatic void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
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static void Encode PROTO_LIST
((unsigned char *, UINT4 *, unsigned int));
9 ~4 y& M: C) p3 l& E4 x
static void Decode PROTO_LIST
((UINT4 *, unsigned char *, unsigned int));
* A6 s8 W6 [: U/ q Y: ]
static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
0 U7 s0 k4 k$ s8 x. W) {
static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
& J" k! z- N/ |
5 M1 D }- C+ Q1 @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
' K4 M% |; W+ }& I- R3 H' g+ ]0 f; X};
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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)))
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#define H(x, y, z) ((x) ^ (y) ^ (z))
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#define I(x, y, z) ((y) ^ ((x) | (~z)))
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/* ROTATE_LEFT rotates x left n bits.
*/
8 ]6 T6 y9 T9 Z% v2 {( w3 j$ }#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
, I, D* W4 w9 G+ r8 F! W/ K
. u/ x; J* P1 J0 Q+ K9 W0 W/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
7 N* m/ s+ T% r8 i4 X( m# C9 f
Rotation is separate from addition to prevent recomputation.
*/
9 \: v. F( s+ z" Z0 D( K' q#define FF(a, b, c, d, x, s, ac) { \
(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
, A# m, |) B! t% Z& H8 C d#define GG(a, b, c, d, x, s, ac) { \
(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
) Y4 o( \0 A$ }6 I: a+ [2 }
#define HH(a, b, c, d, x, s, ac) { \
(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
( S9 O0 [* X9 T
#define II(a, b, c, d, x, s, ac) { \
(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
1 J- A# B/ j1 }
" j( x" n8 N: ^3 I
/* MD5 initialization. Begins an MD5 operation, writing a new context.
*/
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void MD5Init (context)
' s4 y: _$ C, ~( w) P4 ?$ w4 |MD5_CTX *context; /* context */
; S8 a0 ^2 }3 J5 T) D1 ?9 S" F{
context->count[0] = context->count[1] = 0;
/* Load magic initialization constants.
4 a) E, v4 _" g4 `*/
context->state[0] = 0x67452301;
context->state[1] = 0xefcdab89;
context->state[2] = 0x98badcfe;
context->state[3] = 0x10325476;
8 ^5 r/ T. _/ d3 U8 y}
3 u- Y' y% O( D D: X. h% T
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/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
9 m+ r& P$ X9 z* j+ uvoid MD5Update (context, input, inputLen)
, X |) Z- h7 J* p% B( E8 q% Y) oMD5_CTX *context; /* context */
* K0 L, N% V4 F# G
unsigned char *input; /* input block */
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unsigned int inputLen; /* length of input block */
+ C- a- S9 ]# s9 `4 [
{
unsigned int i, index, partLen;
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/* Compute number of bytes mod 64 */
index = (unsigned int)((context->count[0] >> 3) & 0x3F);
0 Q3 [7 s0 T" n( S4 s
/* 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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