md5加密算法C++程序

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#include "global.h"
4 `0 I9 H1 n: J$ T7 u9 L3 ]' S#include "md5.h"

: q0 }- Z0 s. V' Y, T8 S/* Constants for MD5Transform routine.
*/
; U6 X% k, f) ~, u* F
, F9 @8 F k# J" }: u4 `
#define S11 7
#define S12 12
#define S13 17
& |. b: r( t3 i#define S14 22
) x8 {8 w$ S: \3 E# ~8 r" @#define S21 5
; ]/ w$ U j) E" R, n1 }. F#define S22 9
#define S23 14
: X7 E7 x" y9 ] l& Q2 M#define S24 20
9 ^0 I/ O1 h' t# ]" U8 U#define S31 4
#define S32 11
* R+ Y5 }! W& n& t7 A#define S33 16
Z3 W) {3 W! D$ c#define S34 23
#define S41 6
5 v) R! i5 t8 p/ o9 @+ t#define S42 10
#define S43 15
#define S44 21

) Y- Y/ c7 K% L: q3 R& cstatic void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
static void Encode PROTO_LIST
((unsigned char *, UINT4 *, unsigned int));
7 t) |8 v3 i2 h: t' C1 nstatic void Decode PROTO_LIST
((UINT4 *, unsigned char *, unsigned int));
static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
3 i( ]" n/ x0 u
5 o, n# ? p6 G" H9 b4 ostatic 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
, I c" \7 E1 J! V- \' w" S0 U$ {};

; G/ f+ d9 }5 W5 S' Z/ p. }7 X/* F, G, H and I are basic MD5 functions.
*/
#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
! r2 N2 p6 g. ]# t# s* n#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
#define H(x, y, z) ((x) ^ (y) ^ (z))
#define I(x, y, z) ((y) ^ ((x) | (~z)))
! {) ~% D* i" B- O x7 ^/ d
g4 [1 r( r# ~! O, L. o; d/* 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.
# B% A$ r7 Z6 [9 R% URotation 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); \
}
#define GG(a, b, c, d, x, s, ac) { \
(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define HH(a, b, c, d, x, s, ac) { \
(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
& w, z1 V# Z# K( d4 G9 s#define II(a, b, c, d, x, s, ac) { \
(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
( o/ g, }1 X$ W* z5 h6 K
/* MD5 initialization. Begins an MD5 operation, writing a new context.
*/
# |# F% ^' Y( xvoid MD5Init (context)
MD5_CTX *context; /* context */
{
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;
, W. r5 i) L" I% d2 {7 _}

/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
; q& x4 X- U- tvoid MD5Update (context, input, inputLen)
MD5_CTX *context; /* context */
1 C6 Y( d! l/ h' M) q- \, w2 B1 Aunsigned char *input; /* input block */
/ Z1 I% T$ d1 X7 o5 j; }0 eunsigned int inputLen; /* length of input block */
9 x3 {& k# I* x6 v4 @: Z{
unsigned int i, index, partLen;

/* Compute number of bytes mod 64 */
index = (unsigned int)((context->count[0] >> 3) & 0x3F);

/* Update number of bits */
if ((context->count[0] += ((UINT4)inputLen << 3))
&

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