1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2021 The FreeBSD Foundation 5 * 6 * This software was developed by Ararat River Consulting, LLC under 7 * sponsorship from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #ifndef __CRYPTO_CHACHA20_POLY1305_H__ 32 #define __CRYPTO_CHACHA20_POLY1305_H__ 33 34 #include <sys/types.h> 35 36 /* The Poly1305 tag is appended to the cipher text. */ 37 38 void chacha20_poly1305_encrypt(uint8_t *dst, const uint8_t *src, 39 const size_t src_len, const uint8_t *aad, const size_t aad_len, 40 const uint8_t *nonce, const size_t nonce_len, const uint8_t *key); 41 42 bool chacha20_poly1305_decrypt(uint8_t *dst, const uint8_t *src, 43 const size_t src_len, const uint8_t *aad, const size_t aad_len, 44 const uint8_t *nonce, const size_t nonce_len, const uint8_t *key); 45 46 void xchacha20_poly1305_encrypt(uint8_t *dst, const uint8_t *src, 47 const size_t src_len, const uint8_t *aad, const size_t aad_len, 48 const uint8_t *nonce, const uint8_t *key); 49 50 bool xchacha20_poly1305_decrypt(uint8_t *dst, const uint8_t *src, 51 const size_t src_len, const uint8_t *aad, const size_t aad_len, 52 const uint8_t *nonce, const uint8_t *key); 53 54 #endif /* !__CRYPTO_CHACHA20_POLY1305_H__ */ 55