Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Common values for SHA algorithms
4 */
5
6#ifndef _CRYPTO_SHA_H
7#define _CRYPTO_SHA_H
8
9#include <linux/types.h>
10
11#define SHA1_DIGEST_SIZE 20
12#define SHA1_BLOCK_SIZE 64
13
14#define SHA224_DIGEST_SIZE 28
15#define SHA224_BLOCK_SIZE 64
16
17#define SHA256_DIGEST_SIZE 32
18#define SHA256_BLOCK_SIZE 64
19
20#define SHA384_DIGEST_SIZE 48
21#define SHA384_BLOCK_SIZE 128
22
23#define SHA512_DIGEST_SIZE 64
24#define SHA512_BLOCK_SIZE 128
25
26#define SHA1_H0 0x67452301UL
27#define SHA1_H1 0xefcdab89UL
28#define SHA1_H2 0x98badcfeUL
29#define SHA1_H3 0x10325476UL
30#define SHA1_H4 0xc3d2e1f0UL
31
32#define SHA224_H0 0xc1059ed8UL
33#define SHA224_H1 0x367cd507UL
34#define SHA224_H2 0x3070dd17UL
35#define SHA224_H3 0xf70e5939UL
36#define SHA224_H4 0xffc00b31UL
37#define SHA224_H5 0x68581511UL
38#define SHA224_H6 0x64f98fa7UL
39#define SHA224_H7 0xbefa4fa4UL
40
41#define SHA256_H0 0x6a09e667UL
42#define SHA256_H1 0xbb67ae85UL
43#define SHA256_H2 0x3c6ef372UL
44#define SHA256_H3 0xa54ff53aUL
45#define SHA256_H4 0x510e527fUL
46#define SHA256_H5 0x9b05688cUL
47#define SHA256_H6 0x1f83d9abUL
48#define SHA256_H7 0x5be0cd19UL
49
50#define SHA384_H0 0xcbbb9d5dc1059ed8ULL
51#define SHA384_H1 0x629a292a367cd507ULL
52#define SHA384_H2 0x9159015a3070dd17ULL
53#define SHA384_H3 0x152fecd8f70e5939ULL
54#define SHA384_H4 0x67332667ffc00b31ULL
55#define SHA384_H5 0x8eb44a8768581511ULL
56#define SHA384_H6 0xdb0c2e0d64f98fa7ULL
57#define SHA384_H7 0x47b5481dbefa4fa4ULL
58
59#define SHA512_H0 0x6a09e667f3bcc908ULL
60#define SHA512_H1 0xbb67ae8584caa73bULL
61#define SHA512_H2 0x3c6ef372fe94f82bULL
62#define SHA512_H3 0xa54ff53a5f1d36f1ULL
63#define SHA512_H4 0x510e527fade682d1ULL
64#define SHA512_H5 0x9b05688c2b3e6c1fULL
65#define SHA512_H6 0x1f83d9abfb41bd6bULL
66#define SHA512_H7 0x5be0cd19137e2179ULL
67
68extern const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE];
69
70extern const u8 sha224_zero_message_hash[SHA224_DIGEST_SIZE];
71
72extern const u8 sha256_zero_message_hash[SHA256_DIGEST_SIZE];
73
74extern const u8 sha384_zero_message_hash[SHA384_DIGEST_SIZE];
75
76extern const u8 sha512_zero_message_hash[SHA512_DIGEST_SIZE];
77
78struct sha1_state {
79 u32 state[SHA1_DIGEST_SIZE / 4];
80 u64 count;
81 u8 buffer[SHA1_BLOCK_SIZE];
82};
83
84struct sha256_state {
85 u32 state[SHA256_DIGEST_SIZE / 4];
86 u64 count;
87 u8 buf[SHA256_BLOCK_SIZE];
88};
89
90struct sha512_state {
91 u64 state[SHA512_DIGEST_SIZE / 8];
92 u64 count[2];
93 u8 buf[SHA512_BLOCK_SIZE];
94};
95
96struct shash_desc;
97
98extern int crypto_sha1_update(struct shash_desc *desc, const u8 *data,
99 unsigned int len);
100
101extern int crypto_sha1_finup(struct shash_desc *desc, const u8 *data,
102 unsigned int len, u8 *hash);
103
104extern int crypto_sha256_update(struct shash_desc *desc, const u8 *data,
105 unsigned int len);
106
107extern int crypto_sha256_finup(struct shash_desc *desc, const u8 *data,
108 unsigned int len, u8 *hash);
109
110extern int crypto_sha512_update(struct shash_desc *desc, const u8 *data,
111 unsigned int len);
112
113extern int crypto_sha512_finup(struct shash_desc *desc, const u8 *data,
114 unsigned int len, u8 *hash);
115
116/*
117 * Stand-alone implementation of the SHA256 algorithm. It is designed to
118 * have as little dependencies as possible so it can be used in the
119 * kexec_file purgatory. In other cases you should generally use the
120 * hash APIs from include/crypto/hash.h. Especially when hashing large
121 * amounts of data as those APIs may be hw-accelerated.
122 *
123 * For details see lib/crypto/sha256.c
124 */
125
126static inline int sha256_init(struct sha256_state *sctx)
127{
128 sctx->state[0] = SHA256_H0;
129 sctx->state[1] = SHA256_H1;
130 sctx->state[2] = SHA256_H2;
131 sctx->state[3] = SHA256_H3;
132 sctx->state[4] = SHA256_H4;
133 sctx->state[5] = SHA256_H5;
134 sctx->state[6] = SHA256_H6;
135 sctx->state[7] = SHA256_H7;
136 sctx->count = 0;
137
138 return 0;
139}
140extern int sha256_update(struct sha256_state *sctx, const u8 *input,
141 unsigned int length);
142extern int sha256_final(struct sha256_state *sctx, u8 *hash);
143
144static inline int sha224_init(struct sha256_state *sctx)
145{
146 sctx->state[0] = SHA224_H0;
147 sctx->state[1] = SHA224_H1;
148 sctx->state[2] = SHA224_H2;
149 sctx->state[3] = SHA224_H3;
150 sctx->state[4] = SHA224_H4;
151 sctx->state[5] = SHA224_H5;
152 sctx->state[6] = SHA224_H6;
153 sctx->state[7] = SHA224_H7;
154 sctx->count = 0;
155
156 return 0;
157}
158extern int sha224_update(struct sha256_state *sctx, const u8 *input,
159 unsigned int length);
160extern int sha224_final(struct sha256_state *sctx, u8 *hash);
161
162#endif