cryptit.h

加密解密 用于数据的加密,解密 包括 RSA rc4 md5 等,多种加密方法

#pragma once
#include "rsaeuro.h"
#include "atlstr.h"

class CryptIt
{
public:
	CryptIt();
	virtual ~CryptIt();
public:
	//生成RSA Bit 位的key
	bool   CreateRsaKeyPair ( unsigned long ulBit = 1024 );	
	//保存rsaKeys_保存为一个文件
	bool	SaveRsaKeys(char* filename,R_RSA_PUBLIC_KEY publicKey,R_RSA_PRIVATE_KEY privateKey);
	//取得rsaKeys
	bool	LodeRsaKeys(char* filename,R_RSA_PUBLIC_KEY * publicKey,R_RSA_PRIVATE_KEY * privateKey);

public:
	//保存RSA Key_分开保存
	bool   SavePublicKey( char *strFileName, R_RSA_PUBLIC_KEY publicKey );
	bool   SavePrivateKey( char *strFileName  ,R_RSA_PRIVATE_KEY  privateKey);

	//加载RSA key
	bool   LoadPulicKey( char *strFileName , R_RSA_PUBLIC_KEY *publicKey);
	bool   LoadPrivateKey( char *strFileName ,R_RSA_PRIVATE_KEY * privateKey);

public:
	//用RSA加密Buf
	bool   RSAPrivateEncode( unsigned char *strIn,const unsigned int iInEncodeLength, unsigned char *strOut , unsigned int *iOutEncodeLength,R_RSA_PRIVATE_KEY *);
	//用RSA解密Buf
	bool   RsaPublicDecode( unsigned char *strIn,const unsigned int iInDeodeLength, unsigned char *strOut , unsigned int *iOutDecodeLength,R_RSA_PUBLIC_KEY *);
public:
	//用RSA用公钥加密加密Buf
	bool   RSAPublicEncode( unsigned char *strIn,const unsigned int iInEncodeLength, unsigned char *strOut , unsigned int *iOutEncodeLength,R_RSA_PUBLIC_KEY *);
	//用RSA用私钥解密Buf
	bool   RsaPrivateDecode( unsigned char *strIn,const unsigned int iInDeodeLength, unsigned char *strOut , unsigned int *iOutDecodeLength,R_RSA_PRIVATE_KEY *);

//DES3
    //用DES3加密
	bool  Des3Encode( char *strIn,int inlength, char *strOut,int *outlength,char* strKey );
	//用Des3解密
	bool  Des3Decode( char *strIn, int inlength, char *strOut,int *outlength,char* strKey );
    //MD5
    bool  Md5Hash( unsigned char *strIn, char *strOut );

	//RC4
	//RC4生成密钥
	bool RC4Makey(unsigned char *key,int keylength= 256);
	//RC4加密解密
	bool RC4Code( unsigned char *data, int lDataength,unsigned char *key,  int lKeyength );
public:
    //公匙
	R_RSA_PUBLIC_KEY   PublicKey;
	//私匙
	R_RSA_PRIVATE_KEY  PrivateKey;
	//DES3密匙
	CString     DesKey;
	//RC4
	struct rc4_state s;
};