#ifndef SHA256_H_
#define SHA256_H_

#include <stdint.h>

struct sha256_state {
    uint64_t length;
    uint32_t state[8], curlen;
    unsigned char buf[64];
};

int sha256_init(struct sha256_state *md);
int sha256_process(struct sha256_state *md, const unsigned char *in, unsigned long inlen);
int sha256_done(struct sha256_state *md, unsigned char *hash);

#endif