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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"
0 K" I0 p3 ]! N. ^5 }- g' c) ]#include "md5.h"
: T1 ]! o# E& s$ c8 `' l* ?( q% J
& ?8 g* G* l. h/* Constants for MD5Transform routine.
*/
; C# R2 R3 p$ n# S7 p% g9 R$ ~+ ]
' T( V# s [+ ^& V/ O' J' X$ {
. ?0 h( X) n# ^5 U3 d #define S11 7
- R2 I& q+ G! ?* f' i* X#define S12 12
' @- k" R. O) J #define S13 17
( c2 l/ L. t* G M #define S14 22
* J9 Y! z: e0 I& ^#define S21 5
3 J1 D8 G4 E: L8 I2 s% |5 Z% N7 ^8 x#define S22 9
: A# }3 Y2 {2 M5 q. d#define S23 14
+ o M' ~5 r0 q* S #define S24 20
+ Q0 B' |/ M, w #define S31 4
3 f8 {+ z6 W- ]! q7 T #define S32 11
1 i6 j: w, X6 i6 s#define S33 16
2 e# V# v% `2 k( D# m/ _0 u' r* S #define S34 23
( N8 u% H6 I' F. c% j M. x0 N #define S41 6
8 o2 B0 R G8 h0 [3 [7 Y6 ] o #define S42 10
* ~: @1 @( ?2 h. d6 v$ ~ #define S43 15
" u8 e. n4 w$ A#define S44 21
9 W7 ~' I* n7 a: Z, k& q4 `
' [. R6 U$ _( Y1 Y( b" @: F static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
0 [/ [' ~% P M. r# B [# nstatic void Encode PROTO_LIST
((unsigned char *, UINT4 *, unsigned int));
1 X" r' b! F+ u" lstatic void Decode PROTO_LIST
((UINT4 *, unsigned char *, unsigned int));
/ _% W, v; @; E1 t; ostatic void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
9 X: z7 Y* e& i7 M7 s; s8 G static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
% O8 _) ^/ x& [% y6 m1 H4 _
: R( G0 \- R0 mstatic 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
) K6 z0 }( Y$ {4 {, Q4 ` };
* `# k3 e# M: B# o* f0 y; @
% I3 v! z3 C' g1 s /* F, G, H and I are basic MD5 functions.
*/
( i- o9 B/ H @' j* w#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
' d& e7 |# \ r#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
, N' p) o- W) c6 k$ b7 c% s #define H(x, y, z) ((x) ^ (y) ^ (z))
% K! m) U, h, b" V; T* S5 v& Z #define I(x, y, z) ((y) ^ ((x) | (~z)))
& h0 P; M: i0 ?1 \$ l3 ?+ n6 U+ u
7 A, P8 k& S0 }' M/* ROTATE_LEFT rotates x left n bits.
*/
) I# T0 Y% l$ |" ` K( t7 p* E #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
+ W- y( z0 e5 J" Y" [) O, E
Q# e0 Q/ }8 h+ u3 D. d$ x /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
7 Z) L) u* {( N( b3 x, h Rotation is separate from addition to prevent recomputation.
*/
- j, A+ J# N+ r& q* }$ G#define FF(a, b, c, d, x, s, ac) { \
(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
2 |0 i7 B" h6 O7 S) M #define GG(a, b, c, d, x, s, ac) { \
(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
a" f' b7 U4 Q: I9 m: g8 I #define HH(a, b, c, d, x, s, ac) { \
(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
3 t& _ B( }. ~; n: g6 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); \
}
D' G- }4 X/ U9 ~/ c R9 g
% u: e: R- A; A# W /* MD5 initialization. Begins an MD5 operation, writing a new context.
*/
# ?' \- h; v0 [+ D2 u# Q% b$ E! Mvoid MD5Init (context)
2 l+ B/ g$ l: ^( d& u4 q& |4 q MD5_CTX *context; /* context */
% }: e4 x: I. \ {
context->count[0] = context->count[1] = 0;
/* Load magic initialization constants.
* @! X' c* k4 G. b! w! F. R */
context->state[0] = 0x67452301;
context->state[1] = 0xefcdab89;
context->state[2] = 0x98badcfe;
context->state[3] = 0x10325476;
6 ~; h% W l2 l8 ~& A1 F}
1 H7 i1 A7 |7 n: c, F. \
3 [6 e6 C. c& u /* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
# \/ `" F# C: ~void MD5Update (context, input, inputLen)
# R6 ]- K/ @6 ~: Z$ {MD5_CTX *context; /* context */
' C: c+ n0 }8 y" t' a- C unsigned char *input; /* input block */
) `# O! p0 D( d4 h- \" b+ F. g unsigned int inputLen; /* length of input block */
6 N# i+ b: q. K2 }. m{
unsigned int i, index, partLen;
; t4 z1 p' e- M7 }, s' }2 r
/* Compute number of bytes mod 64 */
index = (unsigned int)((context->count[0] >> 3) & 0x3F);
2 N4 }; m4 d8 ?$ g# _2 w5 f. I
/* 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


) w) G+ F ]5 j# j# C. K
# q& O u- V4 w- G
guoyun786@sohu.com
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