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The Wired Equivalent Privacy protocol was supposed to provide wireless IEEE 802.11 based networks with the same amount of security as their wired counterparts. But WEP has several proved flaws in its architecture [19][63][59]. Because of the weak security provided by WEP and due to the fact that parts of MANETs might run on wired links where no encryption is used, some security mechanism could be provided by the routing protocol itself.