sys/dev/if_wg/include/zinc/chacha20poly1305.h

   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 _ZINC_CHACHA20POLY1305_H
   7 #define _ZINC_CHACHA20POLY1305_H
   8
   9 #include <sys/types.h>
  10
  11 struct scatterlist;
  12
  13 enum chacha20poly1305_lengths {
  14         XCHACHA20POLY1305_NONCE_SIZE = 24,
  15         CHACHA20POLY1305_KEY_SIZE = 32,
  16         CHACHA20POLY1305_AUTHTAG_SIZE = 16
  17 };
  18
  19 void chacha20poly1305_encrypt(uint8_t *dst, const uint8_t *src, const size_t src_len,
  20                               const uint8_t *ad, const size_t ad_len,
  21                               const uint64_t nonce,
  22                               const uint8_t key[CHACHA20POLY1305_KEY_SIZE]);
  23
  24 bool chacha20poly1305_encrypt_sg_inplace(
  25         struct scatterlist *src, const size_t src_len, const uint8_t *ad,
  26         const size_t ad_len, const uint64_t nonce,
  27         const uint8_t key[CHACHA20POLY1305_KEY_SIZE], simd_context_t *simd_context);
  28
  29 bool chacha20poly1305_decrypt(uint8_t *dst, const uint8_t *src, const size_t src_len,
  30                          const uint8_t *ad, const size_t ad_len, const uint64_t nonce,
  31                          const uint8_t key[CHACHA20POLY1305_KEY_SIZE]);
  32
  33 bool chacha20poly1305_decrypt_sg_inplace(
  34         struct scatterlist *src, size_t src_len, const uint8_t *ad,
  35         const size_t ad_len, const uint64_t nonce,
  36         const uint8_t key[CHACHA20POLY1305_KEY_SIZE], simd_context_t *simd_context);
  37
  38 void xchacha20poly1305_encrypt(uint8_t *dst, const uint8_t *src, const size_t src_len,
  39                                const uint8_t *ad, const size_t ad_len,
  40                                const uint8_t nonce[XCHACHA20POLY1305_NONCE_SIZE],
  41                                const uint8_t key[CHACHA20POLY1305_KEY_SIZE]);
  42
  43 bool xchacha20poly1305_decrypt(
  44         uint8_t *dst, const uint8_t *src, const size_t src_len, const uint8_t *ad,
  45         const size_t ad_len, const uint8_t nonce[XCHACHA20POLY1305_NONCE_SIZE],
  46         const uint8_t key[CHACHA20POLY1305_KEY_SIZE]);
  47
  48 #endif /* _ZINC_CHACHA20POLY1305_H */