| Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2003-2004, Instant802 Networks, Inc. |
| 3 | * Copyright 2006, Devicescape Software, Inc. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License version 2 as |
| 7 | * published by the Free Software Foundation. |
| 8 | */ |
| 9 | |
| 10 | #ifndef AES_CCM_H |
| 11 | #define AES_CCM_H |
| 12 | |
| Xiang Gao | 4133da7 | 2017-10-10 22:31:49 -0400 | [diff] [blame] | 13 | #include "aead_api.h" |
| Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 14 | |
| Ard Biesheuvel | f4a067f | 2016-10-17 15:05:33 +0100 | [diff] [blame] | 15 | #define CCM_AAD_LEN 32 |
| 16 | |
| Xiang Gao | 4133da7 | 2017-10-10 22:31:49 -0400 | [diff] [blame] | 17 | static inline struct crypto_aead * |
| 18 | ieee80211_aes_key_setup_encrypt(const u8 key[], size_t key_len, size_t mic_len) |
| 19 | { |
| 20 | return aead_key_setup_encrypt("ccm(aes)", key, key_len, mic_len); |
| 21 | } |
| 22 | |
| 23 | static inline int |
| 24 | ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, |
| 25 | u8 *b_0, u8 *aad, u8 *data, |
| 26 | size_t data_len, u8 *mic) |
| 27 | { |
| 28 | return aead_encrypt(tfm, b_0, aad + 2, |
| 29 | be16_to_cpup((__be16 *)aad), |
| 30 | data, data_len, mic); |
| 31 | } |
| 32 | |
| 33 | static inline int |
| 34 | ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, |
| 35 | u8 *b_0, u8 *aad, u8 *data, |
| 36 | size_t data_len, u8 *mic) |
| 37 | { |
| 38 | return aead_decrypt(tfm, b_0, aad + 2, |
| 39 | be16_to_cpup((__be16 *)aad), |
| 40 | data, data_len, mic); |
| 41 | } |
| 42 | |
| 43 | static inline void ieee80211_aes_key_free(struct crypto_aead *tfm) |
| 44 | { |
| 45 | return aead_key_free(tfm); |
| 46 | } |
| Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 47 | |
| 48 | #endif /* AES_CCM_H */ |