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 <linux/crypto.h>
14
15#define CCM_AAD_LEN	32
16
17struct crypto_aead *ieee80211_aes_key_setup_encrypt(const u8 key[],
18						    size_t key_len,
19						    size_t mic_len);
20int ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
21			      u8 *data, size_t data_len, u8 *mic,
22			      size_t mic_len);
23int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
24			      u8 *data, size_t data_len, u8 *mic,
25			      size_t mic_len);
26void ieee80211_aes_key_free(struct crypto_aead *tfm);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
27
28#endif /* AES_CCM_H */

 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 */