LXR linux/include/crypto/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 __CHACHA20POLY1305_H
   7#define __CHACHA20POLY1305_H
   8
   9#include <linux/types.h>
  10#include <linux/scatterlist.h>
  11
  12enum chacha20poly1305_lengths {
  13        XCHACHA20POLY1305_NONCE_SIZE = 24,
  14        CHACHA20POLY1305_KEY_SIZE = 32,
  15        CHACHA20POLY1305_AUTHTAG_SIZE = 16
  16};
  17
  18void chacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
  19                              const u8 *ad, const size_t ad_len,
  20                              const u64 nonce,
  21                              const u8 key[CHACHA20POLY1305_KEY_SIZE]);
  22
  23bool __must_check
  24chacha20poly1305_decrypt(u8 *dst, const u8 *src, const size_t src_len,
  25                         const u8 *ad, const size_t ad_len, const u64 nonce,
  26                         const u8 key[CHACHA20POLY1305_KEY_SIZE]);
  27
  28void xchacha20poly1305_encrypt(u8 *dst, const u8 *src, const size_t src_len,
  29                               const u8 *ad, const size_t ad_len,
  30                               const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE],
  31                               const u8 key[CHACHA20POLY1305_KEY_SIZE]);
  32
  33bool __must_check xchacha20poly1305_decrypt(
  34        u8 *dst, const u8 *src, const size_t src_len, const u8 *ad,
  35        const size_t ad_len, const u8 nonce[XCHACHA20POLY1305_NONCE_SIZE],
  36        const u8 key[CHACHA20POLY1305_KEY_SIZE]);
  37
  38bool chacha20poly1305_encrypt_sg_inplace(struct scatterlist *src, size_t src_len,
  39                                         const u8 *ad, const size_t ad_len,
  40                                         const u64 nonce,
  41                                         const u8 key[CHACHA20POLY1305_KEY_SIZE]);
  42
  43bool chacha20poly1305_decrypt_sg_inplace(struct scatterlist *src, size_t src_len,
  44                                         const u8 *ad, const size_t ad_len,
  45                                         const u64 nonce,
  46                                         const u8 key[CHACHA20POLY1305_KEY_SIZE]);
  47
  48bool chacha20poly1305_selftest(void);
  49
  50#endif /* __CHACHA20POLY1305_H */
  51