LXR linux/net/mac80211/aes

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright 2003-2004, Instant802 Networks, Inc.
   4 * Copyright 2006, Devicescape Software, Inc.
   5 */
   6
   7#ifndef AES_CCM_H
   8#define AES_CCM_H
   9
  10#include "aead_api.h"
  11
  12#define CCM_AAD_LEN     32
  13
  14static inline struct crypto_aead *
  15ieee80211_aes_key_setup_encrypt(const u8 key[], size_t key_len, size_t mic_len)
  16{
  17        return aead_key_setup_encrypt("ccm(aes)", key, key_len, mic_len);
  18}
  19
  20static inline int
  21ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm,
  22                          u8 *b_0, u8 *aad, u8 *data,
  23                          size_t data_len, u8 *mic)
  24{
  25        return aead_encrypt(tfm, b_0, aad + 2,
  26                            be16_to_cpup((__be16 *)aad),
  27                            data, data_len, mic);
  28}
  29
  30static inline int
  31ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm,
  32                          u8 *b_0, u8 *aad, u8 *data,
  33                          size_t data_len, u8 *mic)
  34{
  35        return aead_decrypt(tfm, b_0, aad + 2,
  36                            be16_to_cpup((__be16 *)aad),
  37                            data, data_len, mic);
  38}
  39
  40static inline void ieee80211_aes_key_free(struct crypto_aead *tfm)
  41{
  42        return aead_key_free(tfm);
  43}
  44
  45#endif /* AES_CCM_H */
  46