1*a24d22b2SEric Biggers /* SPDX-License-Identifier: GPL-2.0 */ 2*a24d22b2SEric Biggers /* 3*a24d22b2SEric Biggers * Common values for SHA-1 algorithms 4*a24d22b2SEric Biggers */ 5*a24d22b2SEric Biggers 6*a24d22b2SEric Biggers #ifndef _CRYPTO_SHA1_H 7*a24d22b2SEric Biggers #define _CRYPTO_SHA1_H 8*a24d22b2SEric Biggers 9*a24d22b2SEric Biggers #include <linux/types.h> 10*a24d22b2SEric Biggers 11*a24d22b2SEric Biggers #define SHA1_DIGEST_SIZE 20 12*a24d22b2SEric Biggers #define SHA1_BLOCK_SIZE 64 13*a24d22b2SEric Biggers 14*a24d22b2SEric Biggers #define SHA1_H0 0x67452301UL 15*a24d22b2SEric Biggers #define SHA1_H1 0xefcdab89UL 16*a24d22b2SEric Biggers #define SHA1_H2 0x98badcfeUL 17*a24d22b2SEric Biggers #define SHA1_H3 0x10325476UL 18*a24d22b2SEric Biggers #define SHA1_H4 0xc3d2e1f0UL 19*a24d22b2SEric Biggers 20*a24d22b2SEric Biggers extern const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE]; 21*a24d22b2SEric Biggers 22*a24d22b2SEric Biggers struct sha1_state { 23*a24d22b2SEric Biggers u32 state[SHA1_DIGEST_SIZE / 4]; 24*a24d22b2SEric Biggers u64 count; 25*a24d22b2SEric Biggers u8 buffer[SHA1_BLOCK_SIZE]; 26*a24d22b2SEric Biggers }; 27*a24d22b2SEric Biggers 28*a24d22b2SEric Biggers struct shash_desc; 29*a24d22b2SEric Biggers 30*a24d22b2SEric Biggers extern int crypto_sha1_update(struct shash_desc *desc, const u8 *data, 31*a24d22b2SEric Biggers unsigned int len); 32*a24d22b2SEric Biggers 33*a24d22b2SEric Biggers extern int crypto_sha1_finup(struct shash_desc *desc, const u8 *data, 34*a24d22b2SEric Biggers unsigned int len, u8 *hash); 35*a24d22b2SEric Biggers 36*a24d22b2SEric Biggers /* 37*a24d22b2SEric Biggers * An implementation of SHA-1's compression function. Don't use in new code! 38*a24d22b2SEric Biggers * You shouldn't be using SHA-1, and even if you *have* to use SHA-1, this isn't 39*a24d22b2SEric Biggers * the correct way to hash something with SHA-1 (use crypto_shash instead). 40*a24d22b2SEric Biggers */ 41*a24d22b2SEric Biggers #define SHA1_DIGEST_WORDS (SHA1_DIGEST_SIZE / 4) 42*a24d22b2SEric Biggers #define SHA1_WORKSPACE_WORDS 16 43*a24d22b2SEric Biggers void sha1_init(__u32 *buf); 44*a24d22b2SEric Biggers void sha1_transform(__u32 *digest, const char *data, __u32 *W); 45*a24d22b2SEric Biggers 46*a24d22b2SEric Biggers #endif /* _CRYPTO_SHA1_H */ 47