sha1.h

计算机安全的 多种密码算法演示

// SHA1.h: interface for the CRIPEM class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_SHA1A_H__56BDAD81_1478_11D5_80AC_0000E8810675__INCLUDED_)
#define AFX_SHA1A_H__56BDAD81_1478_11D5_80AC_0000E8810675__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include <stdio.h>
#include <time.h>
#include <string.h>

#define SHA1 

#ifndef PROTOTYPES
#define PROTOTYPES 0
#endif
 /* Length of test block, number of test blocks. */
#define TEST_BLOCK_LEN 1000
#define TEST_BLOCK_COUNT 1000
typedef unsigned char *POINTER;   /* POINTER defines a generic pointer type */
typedef unsigned short int UINT2; /* UINT2 defines a two byte word */
typedef unsigned long int UINT4;  /* UINT4 defines a four byte word */


typedef struct 
{
  UINT4 state[5];               /* state (ABCD) */
  UINT4 count[2];               /* number of bits, modulo 2^64 (lsb first) */
  unsigned char buffer[64];     /* input buffer */
}SHA_CTX;

 
#define K1 0x5a827999
#define K2 0x6ed9eba1
#define K3 0x8f1bbcdc
#define K4 0xca62c1d6

#define f1(x, y, z) ((x & y)|(~x & z))
#define f2(x, y, z) ((x) ^ (y) ^ (z))
#define f3(x, y, z) ((x & y)|(x & z)|(y & z))
#define f4(x, y, z) ((x) ^ (y) ^ (z))


/* 
   ROTATE_LEFT rotates x left n bits.
*/
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
#define expand(W,i) ( W[ i & 15 ] = ROTATE_LEFT( (W[i&15] ^ W[i-14&15] ^ \
	W[i-8&15] ^ W[i-3&15]), 1U) )

/*
   FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
   Rotation is separate from addition to prevent recomputation.
*/
#define subRound(a, b, c, d, e, f, k, data) \
	( e += ROTATE_LEFT(a,5U) + f(b,c,d) + k + data, b = ROTATE_LEFT(b,30U))


class CSHA  
{
public:
	CSHA();
	virtual ~CSHA();

public:
	char* SHAString (char*);
	//char* SHAFile (CString filename);
	CString SHAFile(CString filename);
	char* hmac_sha(char* text, char* key);
	//char* SHAtring PROTO_LIST ((char *));
	//char* SHAFile PROTO_LIST ((char *));

private:
	void SHAInit (SHA_CTX *context);
	void SHAUpdate(SHA_CTX *context, unsigned char *input,unsigned int inputLen);
	void SHAFinal (unsigned char digest[16], SHA_CTX *context);
	void SHATransform  (UINT4 [4], unsigned char [64]) ;
	void Encode(unsigned char *, UINT4 *, unsigned int);
	void Decode (UINT4 *, unsigned char *, unsigned int);
	void SHA_memcpy(POINTER, POINTER, unsigned int);
	void SHA_memset(POINTER, int, unsigned int);

	//LONG RIP_Os2ip(char* pstr);

};

#endif // !defined(AFX_RIPA_H__56BDAD81_1478_11D5_80AC_0000E8810675__INCLUDED_)