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arXiv · 0707.0691

Quantum entropic security and approximate quantum encryption

Simon Pierre Desrosiers·Frédéric Dupuis
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Abstract

We present full generalisations of entropic security and entropic indistinguishability to the quantum world where no assumption but a limit on the knowledge of the adversary is made. This limit is quantified using the quantum conditional min-entropy as introduced by Renato Renner. A proof of the equivalence between the two security definitions is presented. We also provide proofs of security for two different cyphers in this model and a proof for a lower bound on the key length required by any such cypher. These cyphers generalise existing schemes for approximate quantum encryption to the entropic security model.

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Simon Pierre Desrosiers, Frédéric Dupuis. 2010-04-15. Quantum entropic security and approximate quantum encryption. https://doi.org/10.1109/tit.2010.2048488

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