Cryptology ePrint Archive: Report 2012/304

Actively Secure Two-Party Evaluation of any Quantum Operation

Fr\'ed\'eric Dupuis and Jesper Buus Nielsen and Louis Salvail

Abstract: We provide the first two-party protocol allowing Alice and Bob to evaluate privately even against active adversaries any completely positive, trace-preserving map F, given as a quantum circuit, upon their joint quantum input state. Our protocol leaks no more to any active adversary than an ideal functionality for F provided Alice and Bob have the cryptographic resources for active secure two-party classical computation. Our protocol is constructed from the protocol for the same task secure against specious adversaries presented in [DNS10].

Category / Keywords: cryptographic protocols / quantum cryptography

Publication Info: Proceedings of CRYPTO 2012

Date: received 30 May 2012, last revised 16 Oct 2012

Contact author: dupuis at phys ethz ch

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Note: Small updates

Version: 20121016:121546 (All versions of this report)

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