int RIPEMD160_Init(RIPEMD160_CTX *c);
int RIPEMD160_Update(RIPEMD160_CTX *c, const void *data, size_t len);
int RIPEMD160_Final(unsigned char *md, RIPEMD160_CTX *c);
int RIPEMD160_Init(RIPEMD160_CTX *c);
int RIPEMD160_Update(RIPEMD160_CTX *c, const void *data, size_t len);
int RIPEMD160_Final(unsigned char *md, RIPEMD160_CTX *c);