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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"
9 ]7 G# k0 } M0 |0 t4 E; p' y#include "md5.h"
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7 C" C/ p$ b8 R& X4 v0 V7 R /* Constants for MD5Transform routine.
*/
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5 _8 F5 B! l8 F
! T. V! ]5 E* V0 v% V( ^#define S11 7
. y6 g4 @% I3 L; w- i0 |% d5 A" U, Y( \ #define S12 12
# U5 Y# u/ Z( U# ~ g4 r #define S13 17
* _: d% D* d; c" _* L1 Y. E& D4 @ #define S14 22
4 X' d, k% I9 B! N; S, \ #define S21 5
4 W/ I9 A% v0 t0 c! X#define S22 9
Q! b! k/ R4 P#define S23 14
" ~1 e1 h2 N0 I9 N #define S24 20
. y& j _6 j! [( t3 k0 B1 {* B#define S31 4
8 k) h/ {9 @, S+ ^2 B #define S32 11
% Z# C) m( ^$ ^8 X, K0 @6 M; t! c #define S33 16
* D& D8 U2 y3 T5 S# X5 D #define S34 23
9 S* p4 O. A+ x$ v$ c7 v) C#define S41 6
8 @$ `3 {: x( B+ Z3 t: m5 A9 }#define S42 10
2 a# F/ B4 R2 Z u6 Z4 v: n #define S43 15
' Y) A) g8 Y/ J0 l6 `6 O+ c8 ?#define S44 21
2 \9 ?6 u. M% N6 K6 J
' j- E* n6 C/ t" B5 B5 L static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
* o8 _+ x/ W, I8 U$ ~ c. X- H2 y- estatic void Encode PROTO_LIST
((unsigned char *, UINT4 *, unsigned int));
6 t; l3 Y6 m N% w, P+ e static void Decode PROTO_LIST
((UINT4 *, unsigned char *, unsigned int));
- \/ {. q& u$ v- V3 \" \3 Z! ? static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
3 `/ C, ^8 T4 v3 Fstatic void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
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# N ^, W" R) \. E7 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
4 M! v: y+ h4 P};
3 C( r0 }# J H4 C7 U( l
9 S3 P9 ]0 _0 f /* F, G, H and I are basic MD5 functions.
*/
1 b' D5 `3 B/ ~3 e$ y #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
) K" h1 S3 x! ~/ k8 y8 x' {+ O #define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
3 e4 o' c& r1 M# f, {#define H(x, y, z) ((x) ^ (y) ^ (z))
) L) Q( ]+ N+ h9 m8 s1 w, E #define I(x, y, z) ((y) ^ ((x) | (~z)))
! {9 y( Q, o2 n3 ?
$ Z% k5 l! J; q' L" ~1 e' G6 I /* ROTATE_LEFT rotates x left n bits.
*/
5 k- |8 p h* s#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
8 Z, y. P. m8 s# p
0 u2 i6 n b; t3 G( D1 h! K" z /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
! g u' \* q- k, ?/ F6 bRotation is separate from addition to prevent recomputation.
*/
6 ]: m8 ~2 [6 W. i #define FF(a, b, c, d, x, s, ac) { \
(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
8 N4 Y) |" z7 G3 V#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 @% B8 l ~. p/ u #define HH(a, b, c, d, x, s, ac) { \
(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
8 \. Z5 E" @# R2 x5 j9 Z#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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+ N' J X/ o' ]7 {/ M# H: X/* MD5 initialization. Begins an MD5 operation, writing a new context.
*/
9 u- G, s3 z+ x, {( Z) q void MD5Init (context)
7 J e4 t3 y; L; F6 @ MD5_CTX *context; /* context */
3 M5 @/ z7 R+ t, H. m( c7 }{
context->count[0] = context->count[1] = 0;
/* Load magic initialization constants.
0 c" [) i; b! U. X */
context->state[0] = 0x67452301;
context->state[1] = 0xefcdab89;
context->state[2] = 0x98badcfe;
context->state[3] = 0x10325476;
5 Y, o$ I) s0 X" T4 D }
* V; c0 i6 h: S4 ?$ l% r3 w$ Y& F
3 L, n @$ N7 n/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
- k" s6 b+ n2 ~0 @void MD5Update (context, input, inputLen)
# n4 @9 n# \1 y MD5_CTX *context; /* context */
" M4 ~# t- r& c7 q1 h# a1 t. M) P2 h ~unsigned char *input; /* input block */
2 q1 F# ~2 u: G7 N; Y unsigned int inputLen; /* length of input block */
4 w3 S. `# F+ \ ]! J2 { {
unsigned int i, index, partLen;
4 o% \6 h7 K) b+ ^9 i3 C( O
/* Compute number of bytes mod 64 */
index = (unsigned int)((context->count[0] >> 3) & 0x3F);
* Z! T" x/ J* `1 [4 C
/* 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

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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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