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d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
f0706e82 JB |
2 | /* |
3 | * Copyright 2003-2004, Instant802 Networks, Inc. | |
4 | * Copyright 2006, Devicescape Software, Inc. | |
f0706e82 JB |
5 | */ |
6 | ||
7 | #ifndef AES_CCM_H | |
8 | #define AES_CCM_H | |
9 | ||
4133da73 | 10 | #include "aead_api.h" |
f0706e82 | 11 | |
f4a067f9 AB |
12 | #define CCM_AAD_LEN 32 |
13 | ||
4133da73 XG |
14 | static inline struct crypto_aead * |
15 | ieee80211_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 | ||
20 | static inline int | |
21 | ieee80211_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 | ||
30 | static inline int | |
31 | ieee80211_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 | ||
40 | static inline void ieee80211_aes_key_free(struct crypto_aead *tfm) | |
41 | { | |
42 | return aead_key_free(tfm); | |
43 | } | |
f0706e82 JB |
44 | |
45 | #endif /* AES_CCM_H */ |