License: Creative Commons Attribution 4.0 International license (CC BY 4.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.ITC.2023.5
URN: urn:nbn:de:0030-drops-183331
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Fleischhacker, Nils ; Ghoshal, Suparno ; Simkin, Mark

Interactive Non-Malleable Codes Against Desynchronizing Attacks in the Multi-Party Setting

LIPIcs-ITC-2023-5.pdf (1.0 MB)


Interactive Non-Malleable Codes were introduced by Fleischhacker et al. (TCC 2019) in the two party setting with synchronous tampering. The idea of this type of non-malleable code is that it "encodes" an interactive protocol in such a way that, even if the messages are tampered with according to some class F of tampering functions, the result of the execution will either be correct, or completely unrelated to the inputs of the participating parties. In the synchronous setting the adversary is able to modify the messages being exchanged but cannot drop messages nor desynchronize the two parties by first running the protocol with the first party and then with the second party. In this work, we define interactive non-malleable codes in the non-synchronous multi-party setting and construct such interactive non-malleable codes for the class F^s_bounded of bounded-state tampering functions.

BibTeX - Entry

  author =	{Fleischhacker, Nils and Ghoshal, Suparno and Simkin, Mark},
  title =	{{Interactive Non-Malleable Codes Against Desynchronizing Attacks in the Multi-Party Setting}},
  booktitle =	{4th Conference on Information-Theoretic Cryptography (ITC 2023)},
  pages =	{5:1--5:26},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-271-6},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{267},
  editor =	{Chung, Kai-Min},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{},
  URN =		{urn:nbn:de:0030-drops-183331},
  doi =		{10.4230/LIPIcs.ITC.2023.5},
  annote =	{Keywords: non-malleability, multi-party protocols}

Keywords: non-malleability, multi-party protocols
Collection: 4th Conference on Information-Theoretic Cryptography (ITC 2023)
Issue Date: 2023
Date of publication: 21.07.2023

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