blob: 371e8a6617054676a814b86823fbd89e0dcd1a93 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* SM3 hash algorithm
*
* Copyright (C) 2017 ARM Limited or its affiliates.
* Copyright (C) 2017 Gilad Ben-Yossef <gilad@benyossef.com>
* Copyright (C) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
*/
#ifndef _CRYPTO_SM3_H
#define _CRYPTO_SM3_H
#include <linux/types.h>
#define SM3_DIGEST_SIZE 32
#define SM3_BLOCK_SIZE 64
#define SM3_IVA 0x7380166f
#define SM3_IVB 0x4914b2b9
#define SM3_IVC 0x172442d7
#define SM3_IVD 0xda8a0600
#define SM3_IVE 0xa96f30bc
#define SM3_IVF 0x163138aa
#define SM3_IVG 0xe38dee4d
#define SM3_IVH 0xb0fb0e4e
/* State for the SM3 compression function */
struct sm3_block_state {
u32 h[SM3_DIGEST_SIZE / 4];
};
/**
* struct sm3_ctx - Context for hashing a message with SM3
* @state: the compression function state
* @bytecount: number of bytes processed so far
* @buf: partial block buffer; bytecount % SM3_BLOCK_SIZE bytes are valid
*/
struct sm3_ctx {
struct sm3_block_state state;
u64 bytecount;
u8 buf[SM3_BLOCK_SIZE] __aligned(__alignof__(__be64));
};
/**
* sm3_init() - Initialize an SM3 context for a new message
* @ctx: the context to initialize
*
* If you don't need incremental computation, consider sm3() instead.
*
* Context: Any context.
*/
void sm3_init(struct sm3_ctx *ctx);
/**
* sm3_update() - Update an SM3 context with message data
* @ctx: the context to update; must have been initialized
* @data: the message data
* @len: the data length in bytes
*
* This can be called any number of times.
*
* Context: Any context.
*/
void sm3_update(struct sm3_ctx *ctx, const u8 *data, size_t len);
/**
* sm3_final() - Finish computing an SM3 message digest
* @ctx: the context to finalize; must have been initialized
* @out: (output) the resulting SM3 message digest
*
* After finishing, this zeroizes @ctx. So the caller does not need to do it.
*
* Context: Any context.
*/
void sm3_final(struct sm3_ctx *ctx, u8 out[at_least SM3_DIGEST_SIZE]);
/**
* sm3() - Compute SM3 message digest in one shot
* @data: the message data
* @len: the data length in bytes
* @out: (output) the resulting SM3 message digest
*
* Context: Any context.
*/
void sm3(const u8 *data, size_t len, u8 out[at_least SM3_DIGEST_SIZE]);
#endif /* _CRYPTO_SM3_H */
|
