| /* SPDX-License-Identifier: GPL-2.0 OR MIT */ |
| /* |
| * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. |
| */ |
| |
| #ifndef __CHACHA20POLY1305_H |
| #define __CHACHA20POLY1305_H |
| |
| #include <linux/types.h> |
| #include <linux/scatterlist.h> |
| |
| enum chacha20poly1305_lengths { |
| XCHACHA20POLY1305_NONCE_SIZE = 24, |
| CHACHA20POLY1305_KEY_SIZE = 32, |
| CHACHA20POLY1305_AUTHTAG_SIZE = 16 |
| }; |
| |
| void chacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len, |
| const u8 *ad, const size_t ad_len, |
| const u64 nonce, |
| const u8 key[at_least CHACHA20POLY1305_KEY_SIZE]); |
| |
| bool __must_check |
| chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len, |
| const u8 *ad, const size_t ad_len, const u64 nonce, |
| const u8 key[at_least CHACHA20POLY1305_KEY_SIZE]); |
| |
| void xchacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len, |
| const u8 *ad, const size_t ad_len, |
| const u8 nonce[at_least XCHACHA20POLY1305_NONCE_SIZE], |
| const u8 key[at_least CHACHA20POLY1305_KEY_SIZE]); |
| |
| bool __must_check xchacha20poly1305_decrypt( |
| u8 *dst, const u8 *src, const size_t src_len, |
| const u8 *ad, const size_t ad_len, |
| const u8 nonce[at_least XCHACHA20POLY1305_NONCE_SIZE], |
| const u8 key[at_least CHACHA20POLY1305_KEY_SIZE]); |
| |
| bool chacha20poly1305_encrypt_sg_inplace(struct scatterlist *src, size_t src_len, |
| const u8 *ad, const size_t ad_len, |
| const u64 nonce, |
| const u8 key[at_least CHACHA20POLY1305_KEY_SIZE]); |
| |
| bool chacha20poly1305_decrypt_sg_inplace(struct scatterlist *src, size_t src_len, |
| const u8 *ad, const size_t ad_len, |
| const u64 nonce, |
| const u8 key[at_least CHACHA20POLY1305_KEY_SIZE]); |
| |
| bool chacha20poly1305_selftest(void); |
| |
| #endif /* __CHACHA20POLY1305_H */ |
