#include <openssl/evp.h>

extern EVP_MD * md;

int init_hasher(void);
int deinit_hasher(void);
unsigned char * digest(const unsigned char *in, size_t inlen, unsigned int * outlen);

int begin_digest();
int digest_part(const unsigned char *in, size_t inlen);
unsigned char * get_digest(unsigned int * outlen);