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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2546f811 MW |
2 | /* |
3 | * Common values for the Poly1305 algorithm | |
4 | */ | |
5 | ||
6 | #ifndef _CRYPTO_POLY1305_H | |
7 | #define _CRYPTO_POLY1305_H | |
8 | ||
9 | #include <linux/types.h> | |
10 | #include <linux/crypto.h> | |
11 | ||
12 | #define POLY1305_BLOCK_SIZE 16 | |
13 | #define POLY1305_KEY_SIZE 32 | |
14 | #define POLY1305_DIGEST_SIZE 16 | |
15 | ||
16 | struct poly1305_desc_ctx { | |
17 | /* key */ | |
18 | u32 r[5]; | |
19 | /* finalize key */ | |
20 | u32 s[4]; | |
21 | /* accumulator */ | |
22 | u32 h[5]; | |
23 | /* partial buffer */ | |
24 | u8 buf[POLY1305_BLOCK_SIZE]; | |
25 | /* bytes used in partial buffer */ | |
26 | unsigned int buflen; | |
27 | /* r key has been set */ | |
28 | bool rset; | |
29 | /* s key has been set */ | |
30 | bool sset; | |
31 | }; | |
32 | ||
33 | int crypto_poly1305_init(struct shash_desc *desc); | |
2546f811 MW |
34 | unsigned int crypto_poly1305_setdesckey(struct poly1305_desc_ctx *dctx, |
35 | const u8 *src, unsigned int srclen); | |
36 | int crypto_poly1305_update(struct shash_desc *desc, | |
37 | const u8 *src, unsigned int srclen); | |
38 | int crypto_poly1305_final(struct shash_desc *desc, u8 *dst); | |
39 | ||
40 | #endif |