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The WEP code in the mac80211 subsystem currently uses the crypto API to access the arc4 (RC4) cipher, which is overly complicated, and doesn't really have an upside in this particular case, since ciphers are always synchronous and therefore always implemented in software. Given that we have no accelerated software implementations either, it is much more straightforward to invoke a generic library interface directly. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
34 lines
843 B
C
34 lines
843 B
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 "key.h"
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int ieee80211_tkip_encrypt_data(struct arc4_ctx *ctx,
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struct ieee80211_key *key,
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struct sk_buff *skb,
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u8 *payload, size_t payload_len);
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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 arc4_ctx *ctx,
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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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