|
|
#include "global.h" ; v; P# o# s8 K; U7 n& |
#include "md5.h"
4 P5 L) k8 s7 o0 M9 ]% w; O6 U9 g ! a7 q: e J- u& L) W$ I) V) q
/* Constants for MD5Transform routine. */ - ^" K9 b, d9 c
( q b% j6 X' }9 L
4 F U4 z8 {0 _# J- N5 V4 e* l
#define S11 7 0 m9 W; Q5 X9 P8 R& y
#define S12 12
3 k9 s% V& G* K) `9 a+ H#define S13 17
' F: M2 r: c) ?3 F; x#define S14 22 - A& @4 C; N1 l* }
#define S21 5 " h4 y: J2 r# ?- [+ }; w
#define S22 9 : ]$ q/ ?9 X' V `7 O( ~
#define S23 14 0 r. u& v$ |" Y% G# U
#define S24 20
" u! T& h" Z- K: T$ z#define S31 4 7 H& l* a& ^) T0 t6 \
#define S32 11
) P6 w% B: ~0 p4 t#define S33 16
! h7 y/ ], q3 e: @; E' M) i" t5 ~#define S34 23 / n1 \, q9 n/ o% i) V/ X- I6 q9 ?
#define S41 6
/ T$ _+ C6 C+ m) [, b/ S) i2 ~#define S42 10
$ a# g4 a% ?/ n# b: Q& x#define S43 15
4 G+ c; H" J$ Z#define S44 21 K/ ?& B. }, r
+ x/ Q- h( q) T+ F9 R( P6 ?8 astatic void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
7 L- n$ [2 G" s% |static void Encode PROTO_LIST ((unsigned char *, UINT4 *, unsigned int));
: M/ y/ o- |/ \6 x! {static void Decode PROTO_LIST ((UINT4 *, unsigned char *, unsigned int)); 9 q$ b8 n( m" l" @
static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
) M: W- @( P* R: a1 H3 cstatic void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
% j4 N5 P8 u. q7 N) H! c1 `
/ [$ l9 N1 K& H. Z0 ?- Wstatic 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
1 t# S- ~( e8 b( U' z3 H1 b& G+ P};
; f; b( \: q f, r3 j) Z # L- a6 ?+ J6 e7 s# S0 l4 r
/* F, G, H and I are basic MD5 functions. */
+ [5 }2 y/ l6 c; n/ f#define F(x, y, z) (((x) & (y)) | ((~x) & (z))) # R! U. ?7 }+ M: i
#define G(x, y, z) (((x) & (z)) | ((y) & (~z))) 8 ]' v) c Y8 O- \! u. }$ d
#define H(x, y, z) ((x) ^ (y) ^ (z)) . ]2 X, a. x7 |2 E/ H
#define I(x, y, z) ((y) ^ ((x) | (~z))) + t. L" @5 ], y1 V9 j# F
1 H; Q/ z4 i8 d4 x* r" s/* ROTATE_LEFT rotates x left n bits. */
7 Q. |, c) h6 q$ `. {; f#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
) m- h; h0 y" p6 K0 B 8 g) E/ g. M8 Z/ t" Z; G
/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4. 5 d- C/ u9 l$ N# z& w( E% k( O
Rotation is separate from addition to prevent recomputation. */ 3 R. W0 d) G7 K% p O, c
#define FF(a, b, c, d, x, s, ac) { \ (a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \ (a) = ROTATE_LEFT ((a), (s)); \ (a) += (b); \ }
8 `7 A7 M5 T$ {/ L#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/ f" R" y' A0 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); \ } 6 y2 B' v/ O8 @$ g$ t- K) g, y' r
#define II(a, b, c, d, x, s, ac) { \ (a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \ (a) = ROTATE_LEFT ((a), (s)); \ (a) += (b); \ }
! T7 X& {1 h. p; H 9 @) l1 n" i! X4 c( }- c
/* MD5 initialization. Begins an MD5 operation, writing a new context. */
+ ~9 B v0 A! Q* a0 Evoid MD5Init (context) 0 I$ O9 R) J% h3 @* V; r! s" B* W% N
MD5_CTX *context; /* context */ * ~7 U: S: ^0 W
{ context->count[0] = context->count[1] = 0; /* Load magic initialization constants. 6 ]+ c1 a/ n$ F C) e) }5 z# V* @
*/ context->state[0] = 0x67452301; context->state[1] = 0xefcdab89; context->state[2] = 0x98badcfe; context->state[3] = 0x10325476;
, `5 I) D2 ~0 J. F# c% G} ! j9 N! F. }+ J' Y' y- P- F/ m
0 k9 l: ^4 t1 J W6 V2 W/* MD5 block update operation. Continues an MD5 message-digest operation, processing another message block, and updating the context. */
- q, P' X" c6 N3 E7 Dvoid MD5Update (context, input, inputLen)
# n) L% e: I f% H* ]- W. b; L0 ]% uMD5_CTX *context; /* context */ 2 F. q, U! L* y$ ?
unsigned char *input; /* input block */ ( g3 a5 |- ^* k+ h7 W+ e, B
unsigned int inputLen; /* length of input block */ 7 O0 |0 _8 G! o% @- A
{ unsigned int i, index, partLen; ' _* V0 m2 s5 v' \* W
/* Compute number of bytes mod 64 */ index = (unsigned int)((context->count[0] >> 3) & 0x3F);
( ?* V/ @0 ?) z: b9 k3 h8 E /* Update number of bits */ if ((context->count[0] += ((UINT4)inputLen << 3)) & |
|