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DOI: 10.4230/LIPIcs.TQC.2022.8

A Constant Lower Bound for Any Quantum Protocol for Secure Function Evaluation

Authors: Sarah A. Osborn and Jamie Sikora

Published in: LIPIcs, Volume 232, 17th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2022)

Abstract

Secure function evaluation is a two-party cryptographic primitive where Bob computes a function of Alice’s and his respective inputs, and both hope to keep their inputs private from the other party. It has been proven that perfect (or near perfect) security is impossible, even for quantum protocols. We generalize this no-go result by exhibiting a constant lower bound on the cheating probabilities for any quantum protocol for secure function evaluation, and present many applications from oblivious transfer to the millionaire’s problem. Constant lower bounds are of practical interest since they imply the impossibility to arbitrarily amplify the security of quantum protocols by any means.

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Sarah A. Osborn and Jamie Sikora. A Constant Lower Bound for Any Quantum Protocol for Secure Function Evaluation. In 17th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2022). Leibniz International Proceedings in Informatics (LIPIcs), Volume 232, pp. 8:1-8:14, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2022)

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@InProceedings{osborn_et_al:LIPIcs.TQC.2022.8,
  author =	{Osborn, Sarah A. and Sikora, Jamie},
  title =	{{A Constant Lower Bound for Any Quantum Protocol for Secure Function Evaluation}},
  booktitle =	{17th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2022)},
  pages =	{8:1--8:14},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-237-2},
  ISSN =	{1868-8969},
  year =	{2022},
  volume =	{232},
  editor =	{Le Gall, Fran\c{c}ois and Morimae, Tomoyuki},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.TQC.2022.8},
  URN =		{urn:nbn:de:0030-drops-165151},
  doi =		{10.4230/LIPIcs.TQC.2022.8},
  annote =	{Keywords: Quantum cryptography, security analysis, secure function evaluation}
}

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A Constant Lower Bound for Any Quantum Protocol for Secure Function Evaluation

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