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