You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
111 lines
2.7 KiB
111 lines
2.7 KiB
5 years ago
|
// md4.cpp - modified by Wei Dai from Andrew M. Kuchling's md4.c
|
||
|
|
// The original code and all modifications are in the public domain.
|
||
|
|
|
||
|
|
// This is the original introductory comment:
|
||
|
|
|
||
|
|
/*
|
||
|
|
* md4.c : MD4 hash algorithm.
|
||
|
|
*
|
||
|
|
* Part of the Python Cryptography Toolkit, version 1.1
|
||
|
|
*
|
||
|
|
* Distribute and use freely; there are no restrictions on further
|
||
|
|
* dissemination and usage except those imposed by the laws of your
|
||
|
|
* country of residence.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "pch.h"
|
||
|
|
#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1
|
||
|
|
#include "md4.h"
|
||
|
|
#include "misc.h"
|
||
|
|
|
||
|
|
NAMESPACE_BEGIN(CryptoPP)
|
||
|
|
namespace Weak1 {
|
||
|
|
|
||
|
|
void MD4::InitState(HashWordType *state)
|
||
|
|
{
|
||
|
|
state[0] = 0x67452301L;
|
||
|
|
state[1] = 0xefcdab89L;
|
||
|
|
state[2] = 0x98badcfeL;
|
||
|
|
state[3] = 0x10325476L;
|
||
|
|
}
|
||
|
|
|
||
|
|
void MD4::Transform (word32 *digest, const word32 *in)
|
||
|
|
{
|
||
|
|
// #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
|
||
|
|
#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
|
||
|
|
#define G(x, y, z) (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
|
||
|
|
#define H(x, y, z) ((x) ^ (y) ^ (z))
|
||
|
|
|
||
|
|
word32 A, B, C, D;
|
||
|
|
|
||
|
|
A=digest[0];
|
||
|
|
B=digest[1];
|
||
|
|
C=digest[2];
|
||
|
|
D=digest[3];
|
||
|
|
|
||
|
|
#define function(a,b,c,d,k,s) a=rotlFixed(a+F(b,c,d)+in[k],s);
|
||
|
|
function(A,B,C,D, 0, 3);
|
||
|
|
function(D,A,B,C, 1, 7);
|
||
|
|
function(C,D,A,B, 2,11);
|
||
|
|
function(B,C,D,A, 3,19);
|
||
|
|
function(A,B,C,D, 4, 3);
|
||
|
|
function(D,A,B,C, 5, 7);
|
||
|
|
function(C,D,A,B, 6,11);
|
||
|
|
function(B,C,D,A, 7,19);
|
||
|
|
function(A,B,C,D, 8, 3);
|
||
|
|
function(D,A,B,C, 9, 7);
|
||
|
|
function(C,D,A,B,10,11);
|
||
|
|
function(B,C,D,A,11,19);
|
||
|
|
function(A,B,C,D,12, 3);
|
||
|
|
function(D,A,B,C,13, 7);
|
||
|
|
function(C,D,A,B,14,11);
|
||
|
|
function(B,C,D,A,15,19);
|
||
|
|
|
||
|
|
#undef function
|
||
|
|
#define function(a,b,c,d,k,s) a=rotlFixed(a+G(b,c,d)+in[k]+0x5a827999,s);
|
||
|
|
function(A,B,C,D, 0, 3);
|
||
|
|
function(D,A,B,C, 4, 5);
|
||
|
|
function(C,D,A,B, 8, 9);
|
||
|
|
function(B,C,D,A,12,13);
|
||
|
|
function(A,B,C,D, 1, 3);
|
||
|
|
function(D,A,B,C, 5, 5);
|
||
|
|
function(C,D,A,B, 9, 9);
|
||
|
|
function(B,C,D,A,13,13);
|
||
|
|
function(A,B,C,D, 2, 3);
|
||
|
|
function(D,A,B,C, 6, 5);
|
||
|
|
function(C,D,A,B,10, 9);
|
||
|
|
function(B,C,D,A,14,13);
|
||
|
|
function(A,B,C,D, 3, 3);
|
||
|
|
function(D,A,B,C, 7, 5);
|
||
|
|
function(C,D,A,B,11, 9);
|
||
|
|
function(B,C,D,A,15,13);
|
||
|
|
|
||
|
|
#undef function
|
||
|
|
#define function(a,b,c,d,k,s) a=rotlFixed(a+H(b,c,d)+in[k]+0x6ed9eba1,s);
|
||
|
|
function(A,B,C,D, 0, 3);
|
||
|
|
function(D,A,B,C, 8, 9);
|
||
|
|
function(C,D,A,B, 4,11);
|
||
|
|
function(B,C,D,A,12,15);
|
||
|
|
function(A,B,C,D, 2, 3);
|
||
|
|
function(D,A,B,C,10, 9);
|
||
|
|
function(C,D,A,B, 6,11);
|
||
|
|
function(B,C,D,A,14,15);
|
||
|
|
function(A,B,C,D, 1, 3);
|
||
|
|
function(D,A,B,C, 9, 9);
|
||
|
|
function(C,D,A,B, 5,11);
|
||
|
|
function(B,C,D,A,13,15);
|
||
|
|
function(A,B,C,D, 3, 3);
|
||
|
|
function(D,A,B,C,11, 9);
|
||
|
|
function(C,D,A,B, 7,11);
|
||
|
|
function(B,C,D,A,15,15);
|
||
|
|
|
||
|
|
digest[0]+=A;
|
||
|
|
digest[1]+=B;
|
||
|
|
digest[2]+=C;
|
||
|
|
digest[3]+=D;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
NAMESPACE_END
|