Ard Biesheuvel | ed20078 | 2019-11-08 13:22:39 +0100 | [diff] [blame] | 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> |
Ard Biesheuvel | d95312a | 2019-11-08 13:22:40 +0100 | [diff] [blame] | 10 | #include <linux/scatterlist.h> |
Ard Biesheuvel | ed20078 | 2019-11-08 13:22:39 +0100 | [diff] [blame] | 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 | |
Ard Biesheuvel | d95312a | 2019-11-08 13:22:40 +0100 | [diff] [blame] | 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 | |
Herbert Xu | 06cc2af | 2020-07-08 12:41:13 +1000 | [diff] [blame] | 48 | bool chacha20poly1305_selftest(void); |
| 49 | |
Ard Biesheuvel | ed20078 | 2019-11-08 13:22:39 +0100 | [diff] [blame] | 50 | #endif /* __CHACHA20POLY1305_H */ |