#ifndef XYSDK_MD5_H
#define XYSDK_MD5_H


#ifdef __cplusplus
extern "C" {
#endif

 
typedef struct
{
    unsigned int count[2];
    unsigned int state[4];
    unsigned char buffer[64];   
}XY_MD5_CTX;
 
                         
#define F(x,y,z) ((x & y) | (~x & z))
#define G(x,y,z) ((x & z) | (y & ~z))
#define H(x,y,z) (x^y^z)
#define I(x,y,z) (y ^ (x | ~z))
#define ROTATE_LEFT(x,n) ((x << n) | (x >> (32-n)))
#define FF(a,b,c,d,x,s,ac) \
          { \
          a += F(b,c,d) + x + ac; \
          a = ROTATE_LEFT(a,s); \
          a += b; \
          }
#define GG(a,b,c,d,x,s,ac) \
          { \
          a += G(b,c,d) + x + ac; \
          a = ROTATE_LEFT(a,s); \
          a += b; \
          }
#define HH(a,b,c,d,x,s,ac) \
          { \
          a += H(b,c,d) + x + ac; \
          a = ROTATE_LEFT(a,s); \
          a += b; \
          }
#define II(a,b,c,d,x,s,ac) \
          { \
          a += I(b,c,d) + x + ac; \
          a = ROTATE_LEFT(a,s); \
          a += b; \
          }                                            
void xy_MD5Init(XY_MD5_CTX *context);
void xy_MD5Update(XY_MD5_CTX *context,unsigned char *input,unsigned int inputlen);
void xy_MD5Final(XY_MD5_CTX *context,unsigned char digest[16]);
void xy_MD5Transform(unsigned int state[4],unsigned char block[64]);
void xy_MD5Encode(unsigned char *output,unsigned int *input,unsigned int len);
void xy_MD5Decode(unsigned int *output,unsigned char *input,unsigned int len);
 

#ifdef __cplusplus
}
#endif	

#endif