2 * Copyright 2002-2004, Instant802 Networks, Inc.
3 * Copyright 2005, Devicescape Software, Inc.
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.
10 #ifndef IEEE80211_KEY_H
11 #define IEEE80211_KEY_H
13 #include <linux/types.h>
14 #include <linux/list.h>
15 #include <linux/crypto.h>
16 #include <net/mac80211.h>
19 * struct ieee80211_key::key is encoded as a 256-bit (32 byte) data block:
20 * Temporal Encryption Key (128 bits)
21 * Temporal Authenticator Tx MIC Key (64 bits)
22 * Temporal Authenticator Rx MIC Key (64 bits)
28 #define ALG_TKIP_KEY_LEN 32
29 /* Starting offsets for each key */
30 #define ALG_TKIP_TEMP_ENCR_KEY 0
31 #define ALG_TKIP_TEMP_AUTH_TX_MIC_KEY 16
32 #define ALG_TKIP_TEMP_AUTH_RX_MIC_KEY 24
34 #define TKIP_ICV_LEN 4
36 #define ALG_CCMP_KEY_LEN 16
37 #define CCMP_HDR_LEN 8
38 #define CCMP_MIC_LEN 8
39 #define CCMP_TK_LEN 16
42 #define NUM_RX_DATA_QUEUES 17
44 struct ieee80211_key {
53 /* last received RSC */
54 u32 iv32_rx[NUM_RX_DATA_QUEUES];
55 u16 iv16_rx[NUM_RX_DATA_QUEUES];
56 u16 p1k_rx[NUM_RX_DATA_QUEUES][5];
57 int rx_initialized[NUM_RX_DATA_QUEUES];
61 u8 rx_pn[NUM_RX_DATA_QUEUES][6];
62 struct crypto_cipher *tfm;
63 u32 replays; /* dot11RSNAStatsCCMPReplays */
64 /* scratch buffers for virt_to_page() (crypto API) */
66 #define AES_BLOCK_LEN 16
68 u8 tx_crypto_buf[6 * AES_BLOCK_LEN];
69 u8 rx_crypto_buf[6 * AES_BLOCK_LEN];
73 /* number of times this key has been used */
76 #ifdef CONFIG_MAC80211_DEBUGFS
78 struct dentry *stalink;
80 struct dentry *keylen;
82 struct dentry *keyidx;
83 struct dentry *hw_key_idx;
84 struct dentry *tx_rx_count;
85 struct dentry *algorithm;
86 struct dentry *tx_spec;
87 struct dentry *rx_spec;
88 struct dentry *replays;
94 * key config, must be last because it contains key
95 * material as variable length member
97 struct ieee80211_key_conf conf;
100 #endif /* IEEE80211_KEY_H */