1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or https://opensource.org/licenses/CDDL-1.0.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (c) 2009 Sun Microsystems, Inc.  All rights reserved.
24 * Copyright (c) 2022 Tino Reichardt <milky-zfs@mcmilk.de>
25 */
26
27#ifndef	_SHA2_IMPL_H
28#define	_SHA2_IMPL_H
29
30#include <sys/sha2.h>
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
36/* transform function definition */
37typedef void (*sha256_f)(uint32_t state[8], const void *data, size_t blks);
38typedef void (*sha512_f)(uint64_t state[8], const void *data, size_t blks);
39
40/* needed for checking valid implementations */
41typedef boolean_t (*sha2_is_supported_f)(void);
42
43typedef struct {
44	const char *name;
45	sha256_f transform;
46	sha2_is_supported_f is_supported;
47} sha256_ops_t;
48
49typedef struct {
50	const char *name;
51	sha512_f transform;
52	sha2_is_supported_f is_supported;
53} sha512_ops_t;
54
55extern const sha256_ops_t *sha256_get_ops(void);
56extern const sha512_ops_t *sha512_get_ops(void);
57
58typedef enum {
59	SHA1_TYPE,
60	SHA256_TYPE,
61	SHA384_TYPE,
62	SHA512_TYPE
63} sha2_mech_t;
64
65/*
66 * Context for SHA2 mechanism.
67 */
68typedef struct sha2_ctx {
69	sha2_mech_type_t	sc_mech_type;	/* type of context */
70	SHA2_CTX		sc_sha2_ctx;	/* SHA2 context */
71} sha2_ctx_t;
72
73/*
74 * Context for SHA2 HMAC and HMAC GENERAL mechanisms.
75 */
76typedef struct sha2_hmac_ctx {
77	sha2_mech_type_t	hc_mech_type;	/* type of context */
78	uint32_t		hc_digest_len;	/* digest len in bytes */
79	SHA2_CTX		hc_icontext;	/* inner SHA2 context */
80	SHA2_CTX		hc_ocontext;	/* outer SHA2 context */
81} sha2_hmac_ctx_t;
82
83#ifdef	__cplusplus
84}
85#endif
86
87#endif /* _SHA2_IMPL_H */
88