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This letter proposes a handover authentication scheme using credentials based on chameleon hashing. The main challenges in handover authentication are to provide robust security and efficiency. The main idea of this letter is that credentials generated using the collision resistant hash function provide an authenticated ephemeral Diffie-Hellman key exchange only between a mobile node and an access point without communicating with an authentication server whenever a handover authentication occurs. Our scheme supports robust key exchange and efficient authentication procedure.
Date of Publication: January 2010