1/*	$NetBSD: chacha_impl.h,v 1.1 2020/07/25 22:46:34 riastradh Exp $	*/
2
3/*-
4 * Copyright (c) 2020 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef	_SYS_CRYPTO_CHACHA_CHACHA_IMPL_H
30#define	_SYS_CRYPTO_CHACHA_CHACHA_IMPL_H
31
32#ifdef _KERNEL
33#include <sys/types.h>
34#include <sys/systm.h>
35#else
36#include <stdint.h>
37#include <string.h>
38#endif
39
40#include <crypto/chacha/chacha.h>
41
42struct chacha_impl {
43	const char *ci_name;
44	int	(*ci_probe)(void);
45	void	(*ci_chacha_core)(uint8_t[restrict static CHACHA_CORE_OUTBYTES],
46		    const uint8_t[static CHACHA_CORE_INBYTES],
47		    const uint8_t[static CHACHA_CORE_KEYBYTES],
48		    const uint8_t[static CHACHA_CORE_CONSTBYTES],
49		    unsigned);
50	void	(*ci_hchacha)(uint8_t[restrict static HCHACHA_OUTBYTES],
51		    const uint8_t[static HCHACHA_INBYTES],
52		    const uint8_t[static HCHACHA_KEYBYTES],
53		    const uint8_t[static HCHACHA_CONSTBYTES],
54		    unsigned);
55	void	(*ci_chacha_stream)(uint8_t *restrict, size_t,
56		    uint32_t,
57		    const uint8_t[static CHACHA_STREAM_NONCEBYTES],
58		    const uint8_t[static CHACHA_STREAM_KEYBYTES],
59		    unsigned);
60	void	(*ci_chacha_stream_xor)(uint8_t *, const uint8_t *,
61		    size_t,
62		    uint32_t,
63		    const uint8_t[static CHACHA_STREAM_NONCEBYTES],
64		    const uint8_t[static CHACHA_STREAM_KEYBYTES],
65		    unsigned);
66	void	(*ci_xchacha_stream)(uint8_t *restrict, size_t,
67		    uint32_t,
68		    const uint8_t[static XCHACHA_STREAM_NONCEBYTES],
69		    const uint8_t[static XCHACHA_STREAM_KEYBYTES],
70		    unsigned);
71	void	(*ci_xchacha_stream_xor)(uint8_t *, const uint8_t *,
72		    size_t,
73		    uint32_t,
74		    const uint8_t[static XCHACHA_STREAM_NONCEBYTES],
75		    const uint8_t[static XCHACHA_STREAM_KEYBYTES],
76		    unsigned);
77};
78
79int	chacha_selftest(const struct chacha_impl *);
80
81void	chacha_md_init(const struct chacha_impl *);
82
83#endif	/* _SYS_CRYPTO_CHACHA_CHACHA_IMPL_H */
84