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 20extern const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE]; 21 22struct sha1_state { 23 u32 state[SHA1_DIGEST_SIZE / 4]; 24 u64 count; 25 u8 buffer[SHA1_BLOCK_SIZE]; 26}; 27 28struct shash_desc; 29 30extern int crypto_sha1_update(struct shash_desc *desc, const u8 *data, 31 unsigned int len); 32 33extern 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 43void sha1_init(__u32 *buf); 44void sha1_transform(__u32 *digest, const char *data, __u32 *W); 45 46#endif /* _CRYPTO_SHA1_H */ 47