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#ifndef SHA2_H_
#define SHA2_H_
#include <stdint.h> // uint32_t, uint8_t
#include <stdlib.h> // size_t
#define SHA256_HASH_SIZE 32
typedef struct {
uint8_t buf[64];
size_t buf_len;
uint32_t h[8];
uint64_t num_bytes;
} sha256_t;
void sha256_init(sha256_t * const);
void sha256_push(sha256_t * const, const uint8_t *, size_t);
void sha256_fini(sha256_t * const, uint8_t * const);
void sha256(const uint8_t * const, const size_t, uint8_t * const);
#endif /* SHA2_H_ */
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