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) 2022 Tino Reichardt <milky-zfs@mcmilk.de>
24 */
25
26#ifndef	_SYS_SHA2_H
27#define	_SYS_SHA2_H
28
29#ifdef  _KERNEL
30#include <sys/types.h>
31#else
32#include <stdint.h>
33#include <stdlib.h>
34#endif
35
36#ifdef __cplusplus
37extern "C" {
38#endif
39
40#define	SHA224_BLOCK_LENGTH		64
41#define	SHA256_BLOCK_LENGTH		64
42#define	SHA384_BLOCK_LENGTH		128
43#define	SHA512_BLOCK_LENGTH		128
44
45#define	SHA224_DIGEST_LENGTH		28
46#define	SHA256_DIGEST_LENGTH		32
47#define	SHA384_DIGEST_LENGTH		48
48#define	SHA512_DIGEST_LENGTH		64
49
50#define	SHA512_224_DIGEST_LENGTH	28
51#define	SHA512_256_DIGEST_LENGTH	32
52
53#define	SHA256_HMAC_BLOCK_SIZE		64
54#define	SHA512_HMAC_BLOCK_SIZE		128
55
56/* sha256 context */
57typedef struct {
58	uint32_t state[8];
59	uint64_t count[2];
60	uint8_t wbuf[64];
61
62	/* const sha256_ops_t *ops */
63	const void *ops;
64} sha256_ctx;
65
66/* sha512 context */
67typedef struct {
68	uint64_t state[8];
69	uint64_t count[2];
70	uint8_t wbuf[128];
71
72	/* const sha256_ops_t *ops */
73	const void *ops;
74} sha512_ctx;
75
76/* SHA2 context */
77typedef struct {
78	union {
79		sha256_ctx sha256;
80		sha512_ctx sha512;
81	};
82
83	/* algorithm type */
84	int algotype;
85} SHA2_CTX;
86
87/* SHA2 algorithm types */
88typedef enum sha2_mech_type {
89	SHA256_MECH_INFO_TYPE,		/* SUN_CKM_SHA256 */
90	SHA256_HMAC_MECH_INFO_TYPE,	/* SUN_CKM_SHA256_HMAC */
91	SHA256_HMAC_GEN_MECH_INFO_TYPE,	/* SUN_CKM_SHA256_HMAC_GENERAL */
92	SHA384_MECH_INFO_TYPE,		/* SUN_CKM_SHA384 */
93	SHA384_HMAC_MECH_INFO_TYPE,	/* SUN_CKM_SHA384_HMAC */
94	SHA384_HMAC_GEN_MECH_INFO_TYPE,	/* SUN_CKM_SHA384_HMAC_GENERAL */
95	SHA512_MECH_INFO_TYPE,		/* SUN_CKM_SHA512 */
96	SHA512_HMAC_MECH_INFO_TYPE,	/* SUN_CKM_SHA512_HMAC */
97	SHA512_HMAC_GEN_MECH_INFO_TYPE,	/* SUN_CKM_SHA512_HMAC_GENERAL */
98	SHA512_224_MECH_INFO_TYPE,	/* SUN_CKM_SHA512_224 */
99	SHA512_256_MECH_INFO_TYPE	/* SUN_CKM_SHA512_256 */
100} sha2_mech_type_t;
101
102#define	SHA256			0
103#define	SHA256_HMAC		1
104#define	SHA256_HMAC_GEN		2
105#define	SHA384			3
106#define	SHA384_HMAC		4
107#define	SHA384_HMAC_GEN		5
108#define	SHA512			6
109#define	SHA512_HMAC		7
110#define	SHA512_HMAC_GEN		8
111#define	SHA512_224		9
112#define	SHA512_256		10
113
114/* SHA2 Init function */
115extern void SHA2Init(int algotype, SHA2_CTX *ctx);
116
117/* SHA2 Update function */
118extern void SHA2Update(SHA2_CTX *ctx, const void *data, size_t len);
119
120/* SHA2 Final function */
121extern void SHA2Final(void *digest, SHA2_CTX *ctx);
122
123#ifdef __cplusplus
124}
125#endif
126
127#endif	/* SYS_SHA2_H */
128