blowfishengine.h

l2研究

#pragma once

class CBlowFishEngine
{
public:
	CBlowFishEngine(void);
	~CBlowFishEngine(void);

private:
	static const int ROUNDS = 16;
    static const int BLOCK_SIZE = 8;
    static const int SBOX_SK = 256;
    static const int P_SZ = 18;
    int S0[256];
    int S1[256];
    int S2[256];
    int S3[256];
    int P[18];
    bool encrypting;
    char* workingKey;
public:
	void init(bool encrypting, char key[], int keylength);
	//CString getAlgorithmName(void);
	int processBlock(char in[], int inOff, char out[], int outOff);
	int getBlockSize(void);
	int F(int x);
	void processTable(int xl, int xr, int table[], int tablelength);
	void setKey(char key[], int keylength);
	void encryptBlock(char src[], int srcIndex, char dst[], int dstIndex);
	void decryptBlock(char src[], int srcIndex, char dst[], int dstIndex);
	int BytesTo32bits(char b[], int i);
	void Bits32ToBytes(int in, char b[], int offset);
};