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Secret handshakes from pairing-based key agreements

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6 Author(s)
Balfanz, Dirk ; Palo Alto Res. Center, CA, USA ; Durfee, G. ; Shankar, N. ; Smetters, D.
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Consider a CIA agent who wants to authenticate herself to a server but does not want to reveal her CIA credentials unless the server is a genuine CIA outlet. Consider also that the CIA server does not want to reveal its CIA credentials to anyone but CIA agents - not even to other CIA servers. We first show how pairing-based cryptography can be used to implement such secret handshakes. We then propose a formal definition for secure secret handshakes, and prove that our pairing-based schemes are secure under the Bilinear Diffie-Hellman assumption. Our protocols support role-based group membership authentication, traceability, indistinguishability to eavesdroppers, unbounded collusion resistance, and forward repudiability. Our secret-handshake scheme can be implemented as a TLS cipher suite. We report on the performance of our preliminary Java implementation.

Published in:

Security and Privacy, 2003. Proceedings. 2003 Symposium on

Date of Conference:

11-14 May 2003