جامعة الملك عبدالعزيز

KING ABDULAZIZ UNIVERSITY

Faculty of Computing and Information Technology in Rabigh

Seminar about "Sybil Resistant Authentication in Mobile Adhoc Network" at Computing Faculty in Rabigh


Dr. Sarosh Hashmi presented a seminar about "Sybil Resistant Authentication in Mobile Adhoc Network" at Computing and Information Technology Faculty in Rabigh on Monday 24/10/2011 at 12:00 noon at FCITR meeting room.

The following is a brief of the seminar:
In Sybil attack, an attacker acquires multiple identities and uses them simultaneously or one by one to attack network operations. Such attacks pose a serious threat to the security of self-organized networks like Mobile Ad-hoc Networks (MANETs) that require unique and unchangeable identity per node for detecting routing misbehavior and reliable computation of node’s reputation. Current authentication mechanisms for MANETs are vulnerable to Sybil attack unless they resort to some out of band method like physical contact between nodes for building trust or relying on a Trusted Third Party (TTP) for issuing a unique and unchangeable identity to each node. In this talk
we present an authentication mechanism for MANETs that utilizes hardware id of the device of each node for authentication. An authentication agent is developed that verifies the hardware id of the authenticate node. A comprehensive protection model is employed to protect the authentication agent from various static and dynamic attacks from a potentially malicious authenticate node. Security of authenticate node is assured by involving a TTP that signs the authentication agent, verifying that it will perform only intended function and is safe to execute. With this minimal involvement of the TTP, the proposed authentication scheme offers increased resistance to the Sybil attack. The attacker is now required to either thwart agent protection mechanisms or to acquire multiple devices with  different hardware ids, in order to gain multiple identities.











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Last Update 12/12/2011 10:44:16 AM
 

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