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md5加密算法C++程序

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发表于 2004-11-26 20:11:20 | 显示全部楼层 |阅读模式
#include "global.h"
# G+ S2 ]5 x \8 M8 _4 a+ d#include "md5.h"
$ e) g! D) L0 o8 `! D7 l
# p& N# `! ]' O7 \: c /* Constants for MD5Transform routine.
*/
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' q( N( \+ R$ g1 z#define S11 7
! L! N" @; T K #define S12 12
. X: R$ d2 Y; e- Z" r#define S13 17
r8 Z4 P- W3 w" l" I" ?/ ^: m#define S14 22
7 h0 N2 I: R. b: E# k8 J3 t#define S21 5
+ l4 w& K' b8 D+ f! M #define S22 9
% X) g9 V) k5 Y$ e* Y$ D5 F#define S23 14
: E" @8 l S+ Y4 R# ?) n; q1 l#define S24 20
/ i7 {4 } F# T% j( r0 U1 u5 B #define S31 4
4 D8 B0 K0 i* ? #define S32 11
2 K0 x, G2 O: l8 W0 Z #define S33 16
' O0 w) u3 I: u' }1 p5 I) ^#define S34 23
6 E5 e( o1 w. G! o5 v! {& W3 Q#define S41 6
0 [% O; I: G4 \- F #define S42 10
/ `! X- B* \3 H8 \+ U" } #define S43 15
6 K8 i! y" i3 T! J5 a #define S44 21
: Q$ T9 Z3 v1 g# q. Z. {, l) V
3 C5 S' u; o' @+ M( W( w, F2 a/ Fstatic void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
% Q" E( m2 @1 Z: D% Q5 s- fstatic void Encode PROTO_LIST
((unsigned char *, UINT4 *, unsigned int));
# w3 C: }* U6 p4 c7 c9 E P5 pstatic void Decode PROTO_LIST
((UINT4 *, unsigned char *, unsigned int));
# A$ H- h% \; M# istatic void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
1 O8 ?( E+ ?0 p static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
; D5 j. `4 N% G+ _; x, Q$ e( E* Q
. ?0 D" }5 d3 X* i+ p0 h' |' n+ Bstatic 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
* e, _; M2 ~ B( g9 x. Q };
! ~. _: _8 M7 b( q* d2 D3 l% T' {! |" o
! h) k! n9 X# z$ R, z, F /* F, G, H and I are basic MD5 functions.
*/
5 h+ g h; {' G/ z #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
3 P. H- V! g" {, a3 f; a+ `% Y8 T#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
, K: P' Q$ z" D: G6 ~+ ] #define H(x, y, z) ((x) ^ (y) ^ (z))
# y' n5 y e' R8 ]#define I(x, y, z) ((y) ^ ((x) | (~z)))
* [' u( h# W' j; v+ B4 O/ c
) @! {4 [ n) d, H3 J% X Q% W /* ROTATE_LEFT rotates x left n bits.
*/
) Q" K5 l+ d p6 s) t( R2 ^6 q9 f #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
! c9 q6 [: H6 l: K9 r2 }- U) h9 `
# o5 r2 n" K7 Q2 h( o5 ]/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
/ a( Y: v3 e3 W- ]Rotation is separate from addition to prevent recomputation.
*/
8 ?9 ~" ~, Y4 {6 W9 A#define FF(a, b, c, d, x, s, ac) { \
(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
* @* |# c. e+ q- o' G#define GG(a, b, c, d, x, s, ac) { \
(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
9 G3 v3 m8 G" @/ a$ N) m0 t% Z #define HH(a, b, c, d, x, s, ac) { \
(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
7 Z+ J2 W: z. e/ b0 t7 ?#define II(a, b, c, d, x, s, ac) { \
(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
5 I" A# w# c5 M- ~( s8 N* d7 O
% }* u* m# r/ q. m$ j& r+ y/* MD5 initialization. Begins an MD5 operation, writing a new context.
*/
" |3 B5 n3 `) F/ E! L void MD5Init (context)
7 F; H% h- \/ a# E( g! ~0 \7 ]7 `. L MD5_CTX *context; /* context */
6 C- ` p* z0 i; G9 a {
context->count[0] = context->count[1] = 0;
/* Load magic initialization constants.
7 n6 [: f2 R; ]6 k8 [*/
context->state[0] = 0x67452301;
context->state[1] = 0xefcdab89;
context->state[2] = 0x98badcfe;
context->state[3] = 0x10325476;
2 U8 T5 _' Z) m# s}
: n9 H! ]( l% q
" t/ k; ]' a( Z. s/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
. `* a! L/ ]* b1 D void MD5Update (context, input, inputLen)
1 G4 \6 V: S/ `1 Q6 r/ |MD5_CTX *context; /* context */
. }# v3 }, n R* K4 kunsigned char *input; /* input block */
; U5 m7 G! N! G" e0 v( h1 ? unsigned int inputLen; /* length of input block */
6 ?! [/ I& P; Q5 o* B( n; G f/ c{
unsigned int i, index, partLen;
* ?+ U" p( k. U/ C% A1 A9 W
/* Compute number of bytes mod 64 */
index = (unsigned int)((context->count[0] >> 3) & 0x3F);
0 b( P* S' K: v+ b! R% L1 @
/* Update number of bits */
if ((context->count[0] += ((UINT4)inputLen << 3))
&
不在競爭中變坏,就在沉默中變態

安防知名大师

探花

Rank: 7Rank: 7Rank: 7

积分
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发表于 2004-11-26 20:22:48 | 显示全部楼层

md5加密算法C++程序


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guoyun786@sohu.com
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