md5.h

先前的md5_correct关于Unicode的说法不正确

/*-------------------------------------------------------------------/
Name: md5.h
Purpose:calculate the md5
Author:Kelvin U.V
Date:2002/10/01 4:43
Email : [e-mail]
/-------------------------------------------------------------------*/
/*-------------------------------------------------------------------/
Purpose:fix bugs
Author:xubing
Date:2006/11/28 18:56
Email : [e-mail]
本人如下修改：
1.支持Unicode
2.转换到C++新的标准库
3.修正了CaculateStr的严重错误，原函数并不能得到正确结果
4.其他完善性修正，如类型转换、字符串操作函数使用有长度限制的版本替换等
/-------------------------------------------------------------------*/
////////////////////////////////////////////////////////////////////
///md5.h this is the head of the class md5.
#ifndef __MD5CLASS__
#define __MD5CLASS__

#include <windows.h>
//xubing modified to use new c++ iostream lib in 2006-11-27 -------------------
#include <atlbase.h>
#include <fstream>
using namespace std;
//old:
//#include <fstream.h>
//xubing modified end ---------------------------------------------------------


//#ifdef _UNICODE//xubing added
//#define fstream wfstream
//#endif

#define ENGLISH

#define S11 7
#define S12 12
#define S13 17
#define S14 22
#define S21 5
#define S22 9
#define S23 14
#define S24 20
#define S31 4
#define S32 11
#define S33 16
#define S34 23
#define S41 6
#define S42 10
#define S43 15
#define S44 21

typedef LONGLONG LONG64;

class CMd5
{
public:
	CMd5();
	CMd5(LPCTSTR filename);
	~CMd5();
	LPCTSTR TargetFile(LPCTSTR filename=NULL);
	void TargetStr(LPCTSTR str);
	LPCTSTR GetDigestKey();
	LPCTSTR GetErr();


private:
	inline ULONG LRotate(ULONG Sdata,int nBit);
	inline ULONG F(ULONG x,ULONG y,ULONG z);
	inline ULONG G(ULONG x,ULONG y,ULONG z);
	inline ULONG H(ULONG x,ULONG y,ULONG z);
	inline ULONG I(ULONG x,ULONG y,ULONG z);
	inline void FF(ULONG &a,ULONG b,ULONG c,ULONG d,ULONG Msg,int nBit,ULONG Cnt);
    inline void GG(ULONG &a,ULONG b,ULONG c,ULONG d,ULONG Msg,int nBit,ULONG Cnt);
    inline void HH(ULONG &a,ULONG b,ULONG c,ULONG d,ULONG Msg,int nBit,ULONG Cnt);
    inline void II(ULONG &a,ULONG b,ULONG c,ULONG d,ULONG Msg,int nBit,ULONG Cnt);
private:
	bool Init();
	bool OpenFile();
	bool Read64Byte();
	void TransForm();
	bool CaculateFile();
	bool CaculateStr(LPCTSTR str);
	void SetErr(int nErr);
	void JustifytoStr();
protected:
	fstream Sfile;
	ULONG *pM;
	LPVOID Pointer;
	ULONG T[4];
	bool IsSuc;
	TCHAR fname[MAX_PATH];
	LONG64 FileLen;
	static const ULONG Context[4];
	static const LPTSTR ErrInfo[5][2];
	TCHAR strErr[50];//the size may be small but i don't care about the error messages
	TCHAR Digest[33];
};

#endif
/*　　MD5 ("") = d41d8cd98f00b204e9800998ecf8427e
　　　MD5 ("a") = 0cc175b9c0f1b6a831c399e269772661
　　　MD5 ("abc") = 900150983cd24fb0d6963f7d28e17f72
　　　MD5 ("message digest") = f96b697d7cb7938d525a2f31aaf161d0
　　　MD5 ("abcdefghijklmnopqrstuvwxyz") = c3fcd3d76192e4007dfb496cca67e13b
　　　MD5 ("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789") =
d174ab98d277d9f5a5611c2c9f419d9f
　　　MD5 ("123456789012345678901234567890123456789012345678901234567890123456789
01234567890") = 57edf4a22be3c955ac49da2e2107b67a
*/