nbos

#ifndef NB_HASH_H

#define NB_HASH_H

#include <stddef.h>

#include <stdint.h>

typedef struct {

    uint32_t state[8];

    uint64_t bitcount;

    uint8_t  buffer[64];

    size_t   buffer_used;

} sha256_ctx;

void sha256_init  (sha256_ctx *ctx);

void sha256_update(sha256_ctx *ctx, const void *data, size_t len);

void sha256_final (sha256_ctx *ctx, uint8_t out[32]);

void sha256_hash(const void *data, size_t len, uint8_t out[32]);

void sha256_hex(const uint8_t digest[32], char out[65]);

[[nodiscard]] bool sha256_verify_file(

    const char *path,

    const char *expected_hex,

    char        actual_hex[65]);

#endif