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
33 struct crypto_shash {
34 };
35
36 struct shash_desc {
37 struct crypto_shash *tfm;
38 };
39
40 static inline struct crypto_shash *
crypto_alloc_shash(const char * algostr,int x,int y)41 crypto_alloc_shash(const char *algostr, int x, int y)
42 {
43
44 pr_debug("%s: TODO\n", __func__);
45 return (NULL);
46 }
47
48 static inline void
crypto_free_shash(struct crypto_shash * csh)49 crypto_free_shash(struct crypto_shash *csh)
50 {
51 pr_debug("%s: TODO\n", __func__);
52 }
53
54 static inline int
crypto_shash_init(struct shash_desc * desc)55 crypto_shash_init(struct shash_desc *desc)
56 {
57 pr_debug("%s: TODO\n", __func__);
58 return (-ENXIO);
59 }
60
61 static inline int
crypto_shash_final(struct shash_desc * desc,uint8_t * mic)62 crypto_shash_final(struct shash_desc *desc, uint8_t *mic)
63 {
64 pr_debug("%s: TODO\n", __func__);
65 return (-ENXIO);
66 }
67
68 static inline int
crypto_shash_setkey(struct crypto_shash * csh,const uint8_t * key,size_t keylen)69 crypto_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
75 static inline int
crypto_shash_update(struct shash_desc * desc,uint8_t * data,size_t datalen)76 crypto_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
82 static inline void
shash_desc_zero(struct shash_desc * desc)83 shash_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