WEP keying

In order to offer protection to the traffic from malicious decryption attacks, WEP employs a series of up to four default keys. Additionally, it might also utilize pairwise keys called mapping keys, if permitted. Default keys are distributed to all the stations that exist in a service set. Once a station gets the default keys for its service set, communication is possible using WEP.

One of the weaknesses of cryptographic protocols is key reuse. Owing to this reason, WEP comprises of an alternative class of keys that is employed for pairwise communications. These keys are shared only between two communicating stations. The two stations sharing a key have a key mapping relationship.

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