des.h

本代码用C语言封装了3DES等加解密算法的函数实现

#if !defined( _DES_H)
#define _DES_H

#define		ENCRYPT		0
#define		DESCRYPT	1
#define     PINLEN      9                    
    
void AscToBcd( unsigned char* charbcd, unsigned char* charasc, int len );	
void BcdToAsc( unsigned char* charasc,unsigned char* charbcd, int len );	
void ShowHex( char* name, unsigned char* string, int len ); 
   	
void key_encrypt_Asc(unsigned char* input,unsigned char* key);
void key_encrypt_Bcd(unsigned char* input,unsigned char* key);

void key_uncrypt_Asc(unsigned char* input,unsigned char* key);
void key_uncrypt_Bcd(unsigned char* input,unsigned char* key);
    
void pan_encrypt_Bcd(unsigned char* input, unsigned char* pan,unsigned char* key);
void pan_encrypt_Asc(unsigned char* input, unsigned char* pan,unsigned char* key);
void pan_uncrypt_Bcd(unsigned char* input,unsigned char* pan,unsigned char* key);
void pan_uncrypt_Asc(unsigned char* input,unsigned  char* pan,unsigned  char* key);
    
unsigned char cdesoutput[9];
unsigned char 	cascoutput[17];   	
unsigned char cdeskey[9];
unsigned char cdesinput[9];

unsigned char	KS[16][48];
unsigned char	E[64];

void setkey(unsigned char* key);
void encrypt(unsigned char* block, int edflag);
void expand(unsigned char* in, unsigned char* out);
void compress(unsigned char* in, unsigned char* out);
void TriDes(unsigned char *input,unsigned char *doublekey,unsigned char *output);
void Undes(unsigned char *pin,unsigned char *workkey,unsigned char *cipher_pin);
void Des(unsigned char *pin,unsigned char *workkey,unsigned char *cipher_pin);
int StringToMAC(unsigned char * string,unsigned char * MacKey,unsigned char * MAC);      	

#endif