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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"
5 ^; W7 V) \$ B. I- ]6 J* w#include "md5.h"
$ h0 h! ?2 C- H' G
7 i- _/ \' Q/ K6 Y9 Q; _: S/* Constants for MD5Transform routine.
*/
+ R9 f5 \- B ^5 g& ]) I- P
! V: R. z3 c+ X) D$ ^
6 o- O, h+ |, {1 v( r1 F#define S11 7
8 u! I. G; R( P( B- R3 `#define S12 12
* y# O9 o* h3 ?' r #define S13 17
R$ z# G2 |8 Y3 I#define S14 22
1 P& i) `& f$ K9 O#define S21 5
& V5 m1 t2 ?9 d' F7 O- N! Q#define S22 9
' g, j% o- H4 m9 z' a) g #define S23 14
/ e& a1 k E+ x9 ` #define S24 20
; f$ |7 b" ? k#define S31 4
6 E' t8 ?0 D' b1 o U #define S32 11
1 V4 N: Z6 |& R& @0 [, }. e S" a#define S33 16
1 }' ^ e% f5 }1 @: H$ X #define S34 23
# F1 H# `9 n; D& ?) N: }5 z #define S41 6
0 Z. w) A; x. x$ i3 v #define S42 10
: G, J. i# M9 S; N( \ #define S43 15
1 D& E, {0 N# U1 ?#define S44 21
. c; \1 @' i" W+ I% Z6 e {6 ?3 i
+ W# t- M/ ^/ s. S' ^ static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
6 |8 R. d5 Y: T$ v" rstatic void Encode PROTO_LIST
((unsigned char *, UINT4 *, unsigned int));
# j6 ?2 d/ s& f static void Decode PROTO_LIST
((UINT4 *, unsigned char *, unsigned int));
6 C! _9 E% _. R- n" s/ t static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
- G, @: A1 Y) v4 M) l# ^9 sstatic void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
% A6 y0 l% Q- x- C% Z' _
. }& I" ^7 H. m7 l" Z/ ystatic 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
& a6 P( a2 u! C4 Y) e% {; S2 P };
$ K7 E2 N. t4 Z, P9 ?( p
( n* f& A2 H5 }* T$ K) _0 R, B /* F, G, H and I are basic MD5 functions.
*/
7 B2 ?. v9 a7 @* Q5 {% Y1 B7 Y #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
) @. x9 O, x& |' Z- Q #define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
1 I' H8 t5 Y, S2 l3 t( s5 D. K#define H(x, y, z) ((x) ^ (y) ^ (z))
+ Q# _" V7 h2 x* a% c#define I(x, y, z) ((y) ^ ((x) | (~z)))
( O* B; x0 H$ k2 x6 X. A! q
, ^5 n8 y+ l' ~ /* ROTATE_LEFT rotates x left n bits.
*/
+ K. a2 n& r. }0 v' g4 U& ? #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
- \% q* S1 |9 I
' x( F( Y( x3 \' l /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
6 V1 U% e( [% g/ x: h Rotation is separate from addition to prevent recomputation.
*/
) _; z0 o1 N: C1 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); \
}
4 ^! `: W0 G8 H9 k4 |. S) i #define GG(a, b, c, d, x, s, ac) { \
(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
4 P2 L, e) H4 s2 R- E#define HH(a, b, c, d, x, s, ac) { \
(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
/ Z6 c" t, x+ J) M3 ^# O: |6 q#define II(a, b, c, d, x, s, ac) { \
(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
# q( F8 @& _' m1 M, C
7 v! F! o7 G. l /* MD5 initialization. Begins an MD5 operation, writing a new context.
*/
: O# [ D& }- O& Jvoid MD5Init (context)
$ H% g' o6 Y/ D4 l4 r8 NMD5_CTX *context; /* context */
5 d3 F5 q/ k& u/ q. B; @{
context->count[0] = context->count[1] = 0;
/* Load magic initialization constants.
/ d9 d2 {& a7 y, x */
context->state[0] = 0x67452301;
context->state[1] = 0xefcdab89;
context->state[2] = 0x98badcfe;
context->state[3] = 0x10325476;
+ y8 I, u u1 R2 u}
* Z, f( o& E2 v( ?+ w
3 i6 c% r+ r3 ~! q# b /* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
! j; A3 s. U! J8 I) ~ void MD5Update (context, input, inputLen)
; b. A+ j6 `8 I; n- w+ P MD5_CTX *context; /* context */
# k7 o2 q( A0 ^& Vunsigned char *input; /* input block */
& o8 c: |! f# q9 ^2 b$ Y+ a" Z unsigned int inputLen; /* length of input block */
% p" b3 Z8 Q+ t% C5 w" Q{
unsigned int i, index, partLen;
& _1 I& E- n$ S1 m; x
/* Compute number of bytes mod 64 */
index = (unsigned int)((context->count[0] >> 3) & 0x3F);
% f$ n8 s+ d5 ]; Z& f {
/* Update number of bits */
if ((context->count[0] += ((UINT4)inputLen << 3))
&
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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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q" ^* w8 ]+ Y8 V& @: a
guoyun786@sohu.com
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