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Cryptography 2017, 1(2), 12; https://doi.org/10.3390/cryptography1020012

Multiparty Delegated Quantum Computing

1,2
and
1,3,*
1
School of Informatics, University of Edinburgh, Edinburgh EH89AB, UK
2
Laboratoire d’Informatique de Paris 6-CNRS, Université Pierre et Marie Curie, 75005 Paris, France
3
Department of Physics and Astronomy, University College London, London WC1E6BT, UK
*
Author to whom correspondence should be addressed.
Received: 29 May 2017 / Revised: 18 July 2017 / Accepted: 26 July 2017 / Published: 30 July 2017
(This article belongs to the Special Issue Quantum-Safe Cryptography)
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Abstract

Quantum computing has seen tremendous progress in the past few years. However, due to limitations in the scalability of quantum technologies, it seems that we are far from constructing universal quantum computers for everyday users. A more feasible solution is the delegation of computation to powerful quantum servers on the network. This solution was proposed in previous studies of blind quantum computation, with guarantees for both the secrecy of the input and of the computation being performed. In this work, we further develop this idea of computing over encrypted data, to propose a multiparty delegated quantum computing protocol in the measurement-based quantum computing framework. We prove the security of the protocol against a dishonest server and against dishonest clients, under the assumption of common classical cryptographic constructions. View Full-Text
Keywords: quantum cryptography; secure multiparty quantum computation; composability quantum cryptography; secure multiparty quantum computation; composability
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Kashefi, E.; Pappa, A. Multiparty Delegated Quantum Computing. Cryptography 2017, 1, 12.

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