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 | |
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(alg: "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: aad + 2, |
26 | be16_to_cpup(p: (__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: aad + 2, |
36 | be16_to_cpup(p: (__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 | } |
44 | |
45 | #endif /* AES_CCM_H */ |
46 | |