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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"
/ R# c3 | ^5 l4 a3 N1 h# X#include "md5.h"
, x( x, F! c' g& F; m9 s7 }
) t3 A' x) D9 b. P) r /* Constants for MD5Transform routine.
*/
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9 |$ K' V6 Y- [# O0 [ #define S11 7
* L; ?& |2 ~, |" o! i5 B9 L( Q; O( z) n#define S12 12
4 c+ ^2 l! }) {" R% I2 {#define S13 17
$ g5 Q c2 x& Q- o5 q0 f #define S14 22
& |5 s4 Q0 k: B3 Y #define S21 5
* S4 I9 k$ S0 l" K0 V4 b8 x8 N#define S22 9
! @5 {# q, m- q* A) k# r( G#define S23 14
8 n) S4 c, E, m5 V6 }" m #define S24 20
3 {. c, I L( v1 Y% I$ s N9 j$ Q#define S31 4
1 L; I! y. A; h; \6 C#define S32 11
: ~& j8 s$ I! k5 m) a! B #define S33 16
0 x) ? D: m; w#define S34 23
7 O6 R* K' g) d( k5 G; z3 q+ @#define S41 6
! e, K l+ p3 |+ `6 q6 O$ \#define S42 10
1 z, T2 d% Y9 G! L" ^ #define S43 15
8 p# c, e5 [! N Z* b- \#define S44 21
# l4 P; j: a, V
3 v0 A- b9 m" @" |0 m2 Q. i* M static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
% |- n1 @+ N7 ]; fstatic void Encode PROTO_LIST
((unsigned char *, UINT4 *, unsigned int));
# C% t2 T5 m( T/ T. T7 e static void Decode PROTO_LIST
((UINT4 *, unsigned char *, unsigned int));
5 @' Y& N/ U/ H9 u: P7 I- Y static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
9 ~) A! v, ^# v% _5 i static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
& Q0 p- A4 b$ P0 q6 G
2 A/ G& \! e |5 e2 ?: |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 q3 {+ f1 {8 C( m7 M! w# Z};
3 A: L' X* }% Y, B, }
. x$ j4 [2 t# m" a /* F, G, H and I are basic MD5 functions.
*/
' p) e3 D& t _# Q" f2 Z! R#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
6 U) x- {- j; m$ O5 Y6 H* J+ A2 ~ #define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
; A' s' A; n; c#define H(x, y, z) ((x) ^ (y) ^ (z))
; P2 ]9 k7 d# H0 D#define I(x, y, z) ((y) ^ ((x) | (~z)))
U$ [7 S* I, @* I1 k
8 ]8 G* v9 K$ u4 b: S' C' {2 R /* ROTATE_LEFT rotates x left n bits.
*/
8 ~( K: O% z3 W' ]& H8 E, |#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
6 J7 J# a, z8 v- m
% ^# i* f# N' ? /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
- D/ I& s+ u' BRotation is separate from addition to prevent recomputation.
*/
: B" A8 P- z( q( E6 e; Q2 Y& ]# o/ s #define FF(a, b, c, d, x, s, ac) { \
(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
! O1 }% o4 Z4 M6 V6 q #define GG(a, b, c, d, x, s, ac) { \
(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
3 r/ e+ O" |$ q #define HH(a, b, c, d, x, s, ac) { \
(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
: b7 z. A: ^2 G- X" ~: Q, P2 M #define II(a, b, c, d, x, s, ac) { \
(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
% Z* e0 D0 ], O: x3 u
$ T, n9 ?2 C0 U1 ?- ]- K/* MD5 initialization. Begins an MD5 operation, writing a new context.
*/
8 G# I u& |; O5 \7 U6 mvoid MD5Init (context)
/ H# P. q% f: Z) F! }% R0 x MD5_CTX *context; /* context */
4 B1 B% E( l/ c1 v4 F' c: N+ c4 V5 p3 F {
context->count[0] = context->count[1] = 0;
/* Load magic initialization constants.
, s) u5 E% u6 r9 Z7 R */
context->state[0] = 0x67452301;
context->state[1] = 0xefcdab89;
context->state[2] = 0x98badcfe;
context->state[3] = 0x10325476;
$ f& s: E0 w5 u0 b, c0 p( E}
! o- g3 ?) n. r: r3 { ^2 b) ^3 s) Z4 M
1 c0 `8 G i/ v' `/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
) w' n% ]9 ~' g( m# [4 C void MD5Update (context, input, inputLen)
: Z5 M0 L6 |- V. `2 _MD5_CTX *context; /* context */
0 M, _; C$ e. t: @unsigned char *input; /* input block */
/ ~, a/ U* T" T3 f3 Z unsigned int inputLen; /* length of input block */
7 Q- D4 ?1 j7 B% z+ ?{
unsigned int i, index, partLen;
8 G4 ]* f& c) r4 ]7 ^: {; g
/* Compute number of bytes mod 64 */
index = (unsigned int)((context->count[0] >> 3) & 0x3F);
9 c$ e" B6 r" X
/* 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

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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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