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d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
00b9cfa3 JM |
2 | /* |
3 | * Copyright 2014-2015, Qualcomm Atheros, Inc. | |
00b9cfa3 JM |
4 | */ |
5 | ||
6 | #ifndef AES_GCM_H | |
7 | #define AES_GCM_H | |
8 | ||
4133da73 | 9 | #include "aead_api.h" |
00b9cfa3 | 10 | |
f4a067f9 AB |
11 | #define GCM_AAD_LEN 32 |
12 | ||
4133da73 XG |
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, j_0, aad + 2, | |
18 | be16_to_cpup((__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, j_0, aad + 2, | |
27 | be16_to_cpup((__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("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 | } | |
00b9cfa3 JM |
42 | |
43 | #endif /* AES_GCM_H */ |