hash_sha1.h

在MCS51单片机上实现SHA1算法,可以产生20个字节的数字摘要

//#define F0(x,y,z)  (z ^ (x & (y ^ z)))
//#define F1(x,y,z)  (x ^ y ^ z)
//#define F2(x,y,z)  ((x & y) | (z & (x | y)))
//#define F3(x,y,z)  (x ^ y ^ z)
//#define F0(x,y,z)  ((x & y) ^ ((0xffffffff ^ y) & z)) 
//#define F1(x,y,z)  (x ^ y ^ z)
//#define F2(x,y,z)  ((x & y) | (x & z) | (y & z))
//#define F3(x,y,z)  (x ^ y ^ z)
//#define FF0(a,b,c,d,e,i) t = ((a << 5) + F0(b,c,d) + e + W[i] + 0x5a827999); b = b << 30;
//#define FF1(a,b,c,d,e,i) t = ((a << 5) + F1(b,c,d) + e + W[i] + 0x6ed9eba1); b = b << 30;
//#define FF2(a,b,c,d,e,i) t = ((a << 5) + F2(b,c,d) + e + W[i] + 0x8f1bbcdc); b = b << 30;
//#define FF3(a,b,c,d,e,i) t = ((a << 5) + F3(b,c,d) + e + W[i] + 0xca62c1d6); b = b << 30;

#define CRYPT_OK 0x01

#define SHA1_BUFLEN 576

extern uint8 sha1_buf[ SHA1_BUFLEN ];
extern uint32 H[5];

extern  uint8 generater_compress(uint8 *md ,uint8 *pd,uint16 Dlen);     // pd = process data address

extern void clear_sha1_buf(void)  ;
extern uint8 gen_compress_len(uint16 datalen);

extern  void sha1_compress(uint8 *buf) 	;