md5_check.h

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#ifdef WIN32

#ifndef MD5_H
#define MD5_H


#ifdef __alpha
typedef unsigned int uint32;
#else
typedef unsigned long uint32;
#endif

#define MD5_CHECK_SUCCESS	0
#define MD5_CHECK_FAILED	1

#define MD5_CHECK_KEY_MAX_LEN	20


#ifndef ASM_MD5
/* The four core functions - F1 is optimized somewhat */

/* #define F1(x, y, z) (x & y | ~x & z) */
#define F1(x, y, z) (z ^ (x & (y ^ z)))
#define F2(x, y, z) F1(z, x, y)
#define F3(x, y, z) (x ^ y ^ z)
#define F4(x, y, z) (y ^ (x | ~z))

/* This is the central step in the MD5 algorithm. */
#define MD5STEP(f, w, x, y, z, data, s) \
	( w +=  f(x, y, z) + data,  w = w<<s | w>>(32-s),  w +=  x )
#endif


struct MD5Context {
	uint32 buf[4];
	uint32 bits[2];
	unsigned char in[64];
};

/*
 * This is needed to make RSAREF happy on some MS-DOS compilers.
 */
typedef struct MD5Context MD5_CTX;

class MD5_Check
{

public:

	ULONG GetMD5Result(BYTE *pcBuf, int pcLen, BYTE* MD5Result);

	~MD5_Check();
	MD5_Check();	
	
#ifndef ASM_MD5
	void MD5Final(unsigned char digest[16], struct MD5Context *context);
#endif

private:
	ULONG SetMD5Key(char *pKey, ULONG iLen);
	
	ULONG MD5MessageEncode(BYTE *pcBuf, int pcLen);
	ULONG MD5MessageDecode(BYTE *pcBuf, int pcLen);
	void MD5Init(struct MD5Context *context);
	void MD5Update(struct MD5Context *context, unsigned char const *buf,
	       unsigned len);	
	void MD5Transform(uint32 buf[4], uint32 const in[16]);
	
	/*
	* Start MD5 accumulation.  Set bit count to 0 and buffer to mysterious
	* initialization constants.
	*/
	char   szSharedKey[MD5_CHECK_KEY_MAX_LEN];
	ULONG  iKeyLen;
};

#endif /* ！MD5_H */

#endif