struct ieee80211_key

struct ieee80211_key_conf
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struct ieee80211_key_conf — key information

struct ieee80211_key_conf {
  u32 cipher;
  u8 icv_len;
  u8 iv_len;
  u8 hw_key_idx;
  u8 flags;
  s8 keyidx;
  u8 keylen;
  u8 key[0];
};

cipher: The key's cipher suite selector.
icv_len: The ICV length for this key type
iv_len: The IV length for this key type
hw_key_idx: To be set by the driver, this is the key index the driver wants to be given when a frame is transmitted and needs to be encrypted in hardware.
flags: key flags, see enum ieee80211_key_flags.
keyidx: the key index (0-3)
keylen: key material length
key[0]: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte)

This key information is given by mac80211 to the driver by the set_key callback in struct ieee80211_ops.

- Temporal Encryption Key (128 bits) - Temporal Authenticator Tx MIC Key (64 bits) - Temporal Authenticator Rx MIC Key (64 bits)

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enum set_key_cmd	Home	enum ieee80211_key_flags