1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * Copyright 2014-2015, Qualcomm Atheros, Inc. |
4 | */ |
5 | |
6 | #ifndef AES_GCM_H |
7 | #define AES_GCM_H |
8 | |
9 | #include "aead_api.h" |
10 | |
11 | #define GCM_AAD_LEN 32 |
12 | |
13 | static inline int ieee80211_aes_gcm_encrypt(struct crypto_aead *tfm, |
14 | u8 *j_0, u8 *aad, u8 *data, |
15 | size_t data_len, u8 *mic) |
16 | { |
17 | return aead_encrypt(tfm, b_0: j_0, aad: aad + 2, |
18 | be16_to_cpup(p: (__be16 *)aad), |
19 | data, data_len, mic); |
20 | } |
21 | |
22 | static inline int ieee80211_aes_gcm_decrypt(struct crypto_aead *tfm, |
23 | u8 *j_0, u8 *aad, u8 *data, |
24 | size_t data_len, u8 *mic) |
25 | { |
26 | return aead_decrypt(tfm, b_0: j_0, aad: aad + 2, |
27 | be16_to_cpup(p: (__be16 *)aad), |
28 | data, data_len, mic); |
29 | } |
30 | |
31 | static inline struct crypto_aead * |
32 | ieee80211_aes_gcm_key_setup_encrypt(const u8 key[], size_t key_len) |
33 | { |
34 | return aead_key_setup_encrypt(alg: "gcm(aes)" , key, |
35 | key_len, IEEE80211_GCMP_MIC_LEN); |
36 | } |
37 | |
38 | static inline void ieee80211_aes_gcm_key_free(struct crypto_aead *tfm) |
39 | { |
40 | return aead_key_free(tfm); |
41 | } |
42 | |
43 | #endif /* AES_GCM_H */ |
44 | |