1 | /* SPDX-License-Identifier: GPL-2.0 OR MIT */ |
2 | /* |
3 | * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. |
4 | */ |
5 | |
6 | #ifndef __CHACHA20POLY1305_H |
7 | #define __CHACHA20POLY1305_H |
8 | |
9 | #include <linux/types.h> |
10 | #include <linux/scatterlist.h> |
11 | |
12 | enum chacha20poly1305_lengths { |
13 | XCHACHA20POLY1305_NONCE_SIZE = 24, |
14 | CHACHA20POLY1305_KEY_SIZE = 32, |
15 | CHACHA20POLY1305_AUTHTAG_SIZE = 16 |
16 | }; |
17 | |
18 | void chacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len, |
19 | const u8 *ad, const size_t ad_len, |
20 | const u64 nonce, |
21 | const u8 key[CHACHA20POLY1305_KEY_SIZE]); |
22 | |
23 | bool __must_check |
24 | chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len, |
25 | const u8 *ad, const size_t ad_len, const u64 nonce, |
26 | const u8 key[CHACHA20POLY1305_KEY_SIZE]); |
27 | |
28 | void xchacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len, |
29 | const u8 *ad, const size_t ad_len, |
30 | const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE], |
31 | const u8 key[CHACHA20POLY1305_KEY_SIZE]); |
32 | |
33 | bool __must_check xchacha20poly1305_decrypt( |
34 | u8 *dst, const u8 *src, const size_t src_len, const u8 *ad, |
35 | const size_t ad_len, const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE], |
36 | const u8 key[CHACHA20POLY1305_KEY_SIZE]); |
37 | |
38 | bool chacha20poly1305_encrypt_sg_inplace(struct scatterlist *src, size_t src_len, |
39 | const u8 *ad, const size_t ad_len, |
40 | const u64 nonce, |
41 | const u8 key[CHACHA20POLY1305_KEY_SIZE]); |
42 | |
43 | bool chacha20poly1305_decrypt_sg_inplace(struct scatterlist *src, size_t src_len, |
44 | const u8 *ad, const size_t ad_len, |
45 | const u64 nonce, |
46 | const u8 key[CHACHA20POLY1305_KEY_SIZE]); |
47 | |
48 | bool chacha20poly1305_selftest(void); |
49 | |
50 | #endif /* __CHACHA20POLY1305_H */ |
51 | |