IACR News item: 30 October 2014
Handan Kılınç, Alptekin Küpçü
ePrint ReportWe propose a new framework for fair and secure two-party computation that can be applied on top of any secure two party computation protocol based on Yao\'s garbled circuits. We show that our fairness overhead is minimal, compared to all known existing work. Furthermore, our protocol is fair even in terms of the work performed by Alice and Bob. We also prove our protocol is fair and secure simultaneously, through one simulator, which guarantees that our fairness extensions do not leak any private information. Lastly, we ensure that the TTP never learns the inputs or outputs of the computation. Therefore even if the TTP becomes malicious and causes unfairness, the security of the underlying protocol is still preserved.
Additional news items may be found on the IACR news page.