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
13static 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
22static 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
31static inline struct crypto_aead *
32ieee80211_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
38static 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