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1/*
2 * Copyright 2003-2004, Instant802 Networks, Inc.
3 * Copyright 2006, Devicescape Software, Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10#ifndef AES_CCM_H
11#define AES_CCM_H
12
13#include "aead_api.h"
14
15#define CCM_AAD_LEN 32
16
17static inline struct crypto_aead *
18ieee80211_aes_key_setup_encrypt(const u8 key[], size_t key_len, size_t mic_len)
19{
20 return aead_key_setup_encrypt("ccm(aes)", key, key_len, mic_len);
21}
22
23static inline int
24ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm,
25 u8 *b_0, u8 *aad, u8 *data,
26 size_t data_len, u8 *mic)
27{
28 return aead_encrypt(tfm, b_0, aad + 2,
29 be16_to_cpup((__be16 *)aad),
30 data, data_len, mic);
31}
32
33static inline int
34ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm,
35 u8 *b_0, u8 *aad, u8 *data,
36 size_t data_len, u8 *mic)
37{
38 return aead_decrypt(tfm, b_0, aad + 2,
39 be16_to_cpup((__be16 *)aad),
40 data, data_len, mic);
41}
42
43static inline void ieee80211_aes_key_free(struct crypto_aead *tfm)
44{
45 return aead_key_free(tfm);
46}
47
48#endif /* AES_CCM_H */