#pragma once
#include "sha256_base.h"
#include <stddef.h>
#include <stdint.h>

// SHA256 state - just data
struct Sha256State {
    uint32_t state[8];
    uint8_t buffer[64];
    size_t buffer_len;
    uint64_t total_len;
    TransformFunc transform_fn;
};

// Initialize hasher
void sha256_init(Sha256State* hasher);

// Incremental hashing
void sha256_update(Sha256State* hasher, const uint8_t* data, size_t len);
void sha256_finalize(Sha256State* hasher, uint8_t out[32]);

// Convenience: hash entire buffer at once
// out_hex must be 65 bytes (64 hex chars + null)
void sha256_hash_to_hex(const uint8_t* data, size_t len, char* out_hex);

// Get currently used implementation name
const char* sha256_impl_name(void);
int sha256_has_hardware_accel(void);