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00b9cfa3 JM |
1 | /* |
2 | * Copyright 2014-2015, Qualcomm Atheros, Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | ||
9 | #ifndef AES_GCM_H | |
10 | #define AES_GCM_H | |
11 | ||
4133da73 | 12 | #include "aead_api.h" |
00b9cfa3 | 13 | |
f4a067f9 AB |
14 | #define GCM_AAD_LEN 32 |
15 | ||
4133da73 XG |
16 | static inline int ieee80211_aes_gcm_encrypt(struct crypto_aead *tfm, |
17 | u8 *j_0, u8 *aad, u8 *data, | |
18 | size_t data_len, u8 *mic) | |
19 | { | |
20 | return aead_encrypt(tfm, j_0, aad + 2, | |
21 | be16_to_cpup((__be16 *)aad), | |
22 | data, data_len, mic); | |
23 | } | |
24 | ||
25 | static inline int ieee80211_aes_gcm_decrypt(struct crypto_aead *tfm, | |
26 | u8 *j_0, u8 *aad, u8 *data, | |
27 | size_t data_len, u8 *mic) | |
28 | { | |
29 | return aead_decrypt(tfm, j_0, aad + 2, | |
30 | be16_to_cpup((__be16 *)aad), | |
31 | data, data_len, mic); | |
32 | } | |
33 | ||
34 | static inline struct crypto_aead * | |
35 | ieee80211_aes_gcm_key_setup_encrypt(const u8 key[], size_t key_len) | |
36 | { | |
37 | return aead_key_setup_encrypt("gcm(aes)", key, | |
38 | key_len, IEEE80211_GCMP_MIC_LEN); | |
39 | } | |
40 | ||
41 | static inline void ieee80211_aes_gcm_key_free(struct crypto_aead *tfm) | |
42 | { | |
43 | return aead_key_free(tfm); | |
44 | } | |
00b9cfa3 JM |
45 | |
46 | #endif /* AES_GCM_H */ |