xref: /openbmc/linux/include/crypto/sha1.h (revision a24d22b2)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Common values for SHA-1 algorithms
4  */
5 
6 #ifndef _CRYPTO_SHA1_H
7 #define _CRYPTO_SHA1_H
8 
9 #include <linux/types.h>
10 
11 #define SHA1_DIGEST_SIZE        20
12 #define SHA1_BLOCK_SIZE         64
13 
14 #define SHA1_H0		0x67452301UL
15 #define SHA1_H1		0xefcdab89UL
16 #define SHA1_H2		0x98badcfeUL
17 #define SHA1_H3		0x10325476UL
18 #define SHA1_H4		0xc3d2e1f0UL
19 
20 extern const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE];
21 
22 struct sha1_state {
23 	u32 state[SHA1_DIGEST_SIZE / 4];
24 	u64 count;
25 	u8 buffer[SHA1_BLOCK_SIZE];
26 };
27 
28 struct shash_desc;
29 
30 extern int crypto_sha1_update(struct shash_desc *desc, const u8 *data,
31 			      unsigned int len);
32 
33 extern int crypto_sha1_finup(struct shash_desc *desc, const u8 *data,
34 			     unsigned int len, u8 *hash);
35 
36 /*
37  * An implementation of SHA-1's compression function.  Don't use in new code!
38  * You shouldn't be using SHA-1, and even if you *have* to use SHA-1, this isn't
39  * the correct way to hash something with SHA-1 (use crypto_shash instead).
40  */
41 #define SHA1_DIGEST_WORDS	(SHA1_DIGEST_SIZE / 4)
42 #define SHA1_WORKSPACE_WORDS	16
43 void sha1_init(__u32 *buf);
44 void sha1_transform(__u32 *digest, const char *data, __u32 *W);
45 
46 #endif /* _CRYPTO_SHA1_H */
47