1/*
2 * Copyright (c) 2017, 2022-2023 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29#include <sys/appleapiopts.h>
30
31#ifdef BSD_KERNEL_PRIVATE
32
33#ifndef _ESP_CHACHA_POLY_H_
34#define _ESP_CHACHA_POLY_H_
35
36#define ESP_CHACHAPOLY_PAD_BOUND 1
37#define ESP_CHACHAPOLY_IV_LEN 8
38#define ESP_CHACHAPOLY_ICV_LEN 16
39#define ESP_CHACHAPOLY_KEYBITS_WITH_SALT 288 /* 32 bytes key + 4 bytes salt */
40
41size_t esp_chachapoly_schedlen(const struct esp_algorithm *);
42int esp_chachapoly_schedule(const struct esp_algorithm *,
43 struct secasvar *);
44int esp_chachapoly_encrypt(struct mbuf *, size_t, size_t, struct secasvar *,
45 const struct esp_algorithm *, int);
46int esp_chachapoly_decrypt(struct mbuf *, size_t, struct secasvar *,
47 const struct esp_algorithm *, int);
48int esp_chachapoly_encrypt_data(struct secasvar *, uint8_t *, size_t,
49 struct newesp *, uint8_t *, size_t, uint8_t *, size_t);
50int esp_chachapoly_decrypt_data(struct secasvar *, uint8_t *, size_t,
51 struct newesp *, uint8_t *, size_t, uint8_t *, size_t);
52int esp_chachapoly_encrypt_finalize(struct secasvar *, unsigned char *, size_t);
53int esp_chachapoly_decrypt_finalize(struct secasvar *, unsigned char *, size_t);
54int esp_chachapoly_mature(struct secasvar *);
55int esp_chachapoly_ivlen(const struct esp_algorithm *, struct secasvar *);
56
57#endif /* _ESP_CHACHA_POLY_H_ */
58#endif /* BSD_KERNEL_PRIVATE */
59