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(alg: "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: aad + 2,
26 be16_to_cpup(p: (__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: aad + 2,
36 be16_to_cpup(p: (__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