1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2021 The FreeBSD Foundation
5 *
6 * This software was developed by Ararat River Consulting, LLC under
7 * sponsorship from the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#ifndef __CRYPTO_CHACHA20_POLY1305_H__
32#define	__CRYPTO_CHACHA20_POLY1305_H__
33
34#include <sys/types.h>
35
36/* The Poly1305 tag is appended to the cipher text. */
37
38void	chacha20_poly1305_encrypt(uint8_t *dst, const uint8_t *src,
39	    const size_t src_len, const uint8_t *aad, const size_t aad_len,
40	    const uint8_t *nonce, const size_t nonce_len, const uint8_t *key);
41
42bool	chacha20_poly1305_decrypt(uint8_t *dst, const uint8_t *src,
43	    const size_t src_len, const uint8_t *aad, const size_t aad_len,
44	    const uint8_t *nonce, const size_t nonce_len, const uint8_t *key);
45
46void	xchacha20_poly1305_encrypt(uint8_t *dst, const uint8_t *src,
47	    const size_t src_len, const uint8_t *aad, const size_t aad_len,
48	    const uint8_t *nonce, const uint8_t *key);
49
50bool	xchacha20_poly1305_decrypt(uint8_t *dst, const uint8_t *src,
51	    const size_t src_len, const uint8_t *aad, const size_t aad_len,
52	    const uint8_t *nonce, const uint8_t *key);
53
54#endif /* !__CRYPTO_CHACHA20_POLY1305_H__ */
55