9ae4fda332
This patch makes mac80211 able to send a phase1 key for TKIP decryption. This is needed for drivers that don't do the rekeying by themselves (i.e. iwlwifi). Upon IV16 wrap around, the packet is decrypted in SW, if decryption is ok, mac80211 calls to update_tkip_key with a new phase 1 RX key. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/*
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* Copyright 2002-2004, Instant802 Networks, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef TKIP_H
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#define TKIP_H
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#include <linux/types.h>
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#include <linux/crypto.h>
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#include "ieee80211_key.h"
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u8 * ieee80211_tkip_add_iv(u8 *pos, struct ieee80211_key *key,
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u8 iv0, u8 iv1, u8 iv2);
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void ieee80211_tkip_gen_phase1key(struct ieee80211_key *key, u8 *ta,
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u16 *phase1key);
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void ieee80211_tkip_gen_rc4key(struct ieee80211_key *key, u8 *ta,
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u8 *rc4key);
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void ieee80211_tkip_encrypt_data(struct crypto_blkcipher *tfm,
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struct ieee80211_key *key,
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u8 *pos, size_t payload_len, u8 *ta);
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enum {
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TKIP_DECRYPT_OK = 0,
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TKIP_DECRYPT_NO_EXT_IV = -1,
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TKIP_DECRYPT_INVALID_KEYIDX = -2,
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TKIP_DECRYPT_REPLAY = -3,
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};
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int ieee80211_tkip_decrypt_data(struct crypto_blkcipher *tfm,
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struct ieee80211_key *key,
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u8 *payload, size_t payload_len, u8 *ta,
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u8 *ra, int only_iv, int queue,
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u32 *out_iv32, u16 *out_iv16);
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#endif /* TKIP_H */
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