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 41 size_t esp_chachapoly_schedlen(const struct esp_algorithm *); 42 int esp_chachapoly_schedule(const struct esp_algorithm *, 43 struct secasvar *); 44 int esp_chachapoly_encrypt(struct mbuf *, size_t, size_t, struct secasvar *, 45 const struct esp_algorithm *, int); 46 int esp_chachapoly_decrypt(struct mbuf *, size_t, struct secasvar *, 47 const struct esp_algorithm *, int); 48 int esp_chachapoly_encrypt_data(struct secasvar *, 49 uint8_t *__sized_by(input_data_len), size_t input_data_len, 50 struct newesp *, 51 uint8_t *__sized_by(out_ivlen), size_t out_ivlen, 52 uint8_t *__sized_by(output_data_len), size_t output_data_len); 53 int esp_chachapoly_decrypt_data(struct secasvar *, 54 uint8_t *__sized_by(input_data_len), size_t input_data_len, 55 struct newesp *, 56 uint8_t *__sized_by(ivlen), size_t ivlen, 57 uint8_t *__sized_by(output_data_len), size_t output_data_len); 58 int esp_chachapoly_encrypt_finalize(struct secasvar *, unsigned char *, size_t); 59 int esp_chachapoly_decrypt_finalize(struct secasvar *, unsigned char *, size_t); 60 int esp_chachapoly_mature(struct secasvar *); 61 int esp_chachapoly_ivlen(const struct esp_algorithm *, struct secasvar *); 62 63 #endif /* _ESP_CHACHA_POLY_H_ */ 64 #endif /* BSD_KERNEL_PRIVATE */ 65