1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2022 Bjoern A. Zeeb
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#ifndef _LINUXKPI_CRYPTO_HASH_H
29#define _LINUXKPI_CRYPTO_HASH_H
30
31#include <linux/kernel.h>	/* for pr_debug */
32
33struct crypto_shash {
34};
35
36struct shash_desc {
37	struct crypto_shash	*tfm;
38};
39
40static inline struct crypto_shash *
41crypto_alloc_shash(const char *algostr, int x, int y)
42{
43
44	pr_debug("%s: TODO\n", __func__);
45	return (NULL);
46}
47
48static inline void
49crypto_free_shash(struct crypto_shash *csh)
50{
51	pr_debug("%s: TODO\n", __func__);
52}
53
54static inline int
55crypto_shash_init(struct shash_desc *desc)
56{
57	pr_debug("%s: TODO\n", __func__);
58	return (-ENXIO);
59}
60
61static inline int
62crypto_shash_final(struct shash_desc *desc, uint8_t *mic)
63{
64	pr_debug("%s: TODO\n", __func__);
65	return (-ENXIO);
66}
67
68static inline int
69crypto_shash_setkey(struct crypto_shash *csh, const uint8_t *key, size_t keylen)
70{
71	pr_debug("%s: TODO\n", __func__);
72	return (-ENXIO);
73}
74
75static inline int
76crypto_shash_update(struct shash_desc *desc, uint8_t *data, size_t datalen)
77{
78	pr_debug("%s: TODO\n", __func__);
79	return (-ENXIO);
80}
81
82static inline void
83shash_desc_zero(struct shash_desc *desc)
84{
85
86	explicit_bzero(desc, sizeof(*desc));
87}
88
89/* XXX review this. */
90#define	SHASH_DESC_ON_STACK(desc, tfm)					\
91	uint8_t ___ ## desc ## _desc[sizeof(struct shash_desc)];	\
92	struct shash_desc *desc = (struct shash_desc *)___ ## desc ## _desc
93
94#endif /* _LINUXKPI_CRYPTO_HASH_H */
95