Files
systemd/src/basic/hmac.h
2022-03-15 21:17:00 +01:00

13 lines
469 B
C

/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <stdint.h>
#include <stdlib.h>
#include "sha256.h"
/* Unoptimized implementation based on FIPS 198. 'res' has to be allocated by
* the caller. Prefer external OpenSSL functions, and use this only when
* linking to OpenSSL is not desirable (eg: libsystemd.so). */
void hmac_sha256(const void *key, size_t key_size, const void *input, size_t input_size, uint8_t res[static SHA256_DIGEST_SIZE]);