aes_ccm.h
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/*
* Copyright 2003-2004, Instant802 Networks, Inc.
* Copyright 2006, Devicescape Software, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef AES_CCM_H
#define AES_CCM_H
#include "aead_api.h"
#define CCM_AAD_LEN 32
static inline struct crypto_aead *
ieee80211_aes_key_setup_encrypt(const u8 key[], size_t key_len, size_t mic_len)
{
return aead_key_setup_encrypt("ccm(aes)", key, key_len, mic_len);
}
static inline int
ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm,
u8 *b_0, u8 *aad, u8 *data,
size_t data_len, u8 *mic)
{
return aead_encrypt(tfm, b_0, aad + 2,
be16_to_cpup((__be16 *)aad),
data, data_len, mic);
}
static inline int
ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm,
u8 *b_0, u8 *aad, u8 *data,
size_t data_len, u8 *mic)
{
return aead_decrypt(tfm, b_0, aad + 2,
be16_to_cpup((__be16 *)aad),
data, data_len, mic);
}
static inline void ieee80211_aes_key_free(struct crypto_aead *tfm)
{
return aead_key_free(tfm);
}
#endif /* AES_CCM_H */