/*
 * This software is licensed under the terms of the MIT-License
 * See COPYING for further information.
 * ---
 * Copyright (c) 2011-2019, Lukas Weber <laochailan@web.de>.
 * Copyright (c) 2012-2019, Andrei Alexeyev <akari@taisei-project.org>.
 */

#ifndef IGUARD_util_sha256_h
#define IGUARD_util_sha256_h

#include "taisei.h"

#define SHA256_BLOCK_SIZE 32

typedef struct SHA256State SHA256State;

SHA256State* sha256_new(void) attr_nodiscard;
void sha256_update(SHA256State *state, const uint8_t *data, size_t len) attr_nonnull(1, 2);
void sha256_final(SHA256State *state, uint8_t hash[SHA256_BLOCK_SIZE], size_t hashlen) attr_nonnull(1, 2);
void sha256_free(SHA256State *state);

void sha256_digest(const uint8_t *data, size_t len, uint8_t hash[SHA256_BLOCK_SIZE], size_t hashlen);
void sha256_hexdigest(const uint8_t *data, size_t len, char hash[SHA256_BLOCK_SIZE*2+1], size_t hashlen);

#endif // IGUARD_util_sha256_h