#define	DATALENGTH	350
signed char R[DATALENGTH],PK[DATALENGTH],RsaKey[DATALENGTH]; 
signed char SK[DATALENGTH];
unsigned char DesKey[9];
int RsaPrepare(signed char *sk,signed char *pk,signed char *r);

int ReadRsaFile(signed char *r,signed char *pk,signed char *sk);
int WriteRsaFile(signed char *r,signed char *pk,signed char *sk);

//int EncipherDesKey(char *deskey,signed char *r,signed char *pk,signed char *rsakey);
int DecipherDesKey(signed char *rsakey,signed char *r,signed char *sk,char *deskey);
int StrToByt(char *str,signed char *byt);
void BytToStr(signed char *byt,char *str);