md5加密算法C++程序

乐乐天

#include "global.h"
0 O2 ^# m8 Y% I S" F* f1 }+ M#include "md5.h"
. ]' j2 x1 {. q' |8 m
/* Constants for MD5Transform routine.
*/

2 C6 |% \/ O/ V" t( D7 _( I @
#define S11 7
/ d7 m$ x% j. e, i: {6 p#define S12 12
#define S13 17
% d: u# |% p+ j3 H: [! \#define S14 22
#define S21 5
#define S22 9
[7 U0 I9 }/ @, I#define S23 14
. U. h7 F" D; h6 [" W% }#define S24 20
#define S31 4
#define S32 11
0 k- p4 Y7 A5 G, c#define S33 16
4 j1 I# I+ q$ v' P6 W4 W#define S34 23
#define S41 6
! F |. Z4 s6 R3 x2 ]% R/ A#define S42 10
9 a+ h1 H1 t% R+ y! A#define S43 15
. W8 T+ { f3 u; s4 n9 I#define S44 21

. f7 R7 a5 r% r+ [9 C* Dstatic void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
# ^) }; n0 W& y. x9 qstatic void Encode PROTO_LIST
((unsigned char *, UINT4 *, unsigned int));
2 P# ~! m8 p1 K2 U5 ^% jstatic void Decode PROTO_LIST
((UINT4 *, unsigned char *, unsigned int));
static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
/ `% j& {) \. g* q: z3 \static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
s) ~! Z9 V/ v
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
# H$ [! T6 r6 L! C6 o};

$ C6 l% m9 e! s: U6 ^9 E- o }" c/* F, G, H and I are basic MD5 functions.
*/
#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
C/ z* n C) \$ Q#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
1 f1 O) {; D/ Q#define H(x, y, z) ((x) ^ (y) ^ (z))
#define I(x, y, z) ((y) ^ ((x) | (~z)))
5 z* M% g* p7 ?+ z, K/ h: W
, X' D8 e/ Y. R1 t# ~% l7 d6 U. {/* ROTATE_LEFT rotates x left n bits.
*/
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))

/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
Rotation is separate from addition to prevent recomputation.
*/
#define FF(a, b, c, d, x, s, ac) { \
(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
. [* y* P( q- x U#define GG(a, b, c, d, x, s, ac) { \
(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
2 m% @; g1 d+ \- X#define HH(a, b, c, d, x, s, ac) { \
(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
! I6 X$ G g5 E7 j3 W; L#define II(a, b, c, d, x, s, ac) { \
(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}

/* MD5 initialization. Begins an MD5 operation, writing a new context.
*/
% ], t: @7 }! \ a7 E2 m ? ^void MD5Init (context)
MD5_CTX *context; /* context */
) a5 {1 ^, W( K: z8 n; r{
context->count[0] = context->count[1] = 0;
/* Load magic initialization constants.
*/
context->state[0] = 0x67452301;
context->state[1] = 0xefcdab89;
context->state[2] = 0x98badcfe;
context->state[3] = 0x10325476;
2 H1 m( v4 t8 N) m k3 i}
9 C6 v! D. K% ?- H& I* J* [
/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
void MD5Update (context, input, inputLen)
3 r, ]7 ~, F& S- O$ ]; n* u; tMD5_CTX *context; /* context */
unsigned char *input; /* input block */
6 N2 f9 J6 p0 L1 Gunsigned int inputLen; /* length of input block */
{
unsigned int i, index, partLen;

/* Compute number of bytes mod 64 */
index = (unsigned int)((context->count[0] >> 3) & 0x3F);
3 Z8 I: k8 r& w) ?
/* Update number of bits */
if ((context->count[0] += ((UINT4)inputLen << 3))
&

guoyun786

! J( d. Z& C# O! c D" p, {( Z