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Towards Perfectly Secure and Deniable Communication Using an NFC-Based Key-Exchange Scheme
KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.ORCID iD: 0000-0003-3865-212X
KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.ORCID iD: 0000-0001-5742-5462
2015 (English)In: Secure IT Systems: 20th Nordic Conference NordSec 2015 / [ed] Sonja Buchegger; Mads Dam, Springer, 2015, Vol. 9417, p. 72-87Conference paper, Published paper (Refereed)
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Abstract [en]

In this paper we first analyse the possibility for deniability under a strong adversary, who has an Internet-wide transcript of the communication. Secondly, we present a scheme which provides the desirable properties of previous messaging schemes, but with stronger deniability under the new adversary model. Our scheme requires physical meetings for exchanges of large amounts of random key-material via near-field communication and later uses this random data to key a one-time pad for text-messaging. We prove the correctness of the protocol and, finally, we evaluate the practical feasibility of the suggested scheme.

Place, publisher, year, edition, pages
Springer, 2015. Vol. 9417, p. 72-87
Series
Lecture Notes in Computer Science
Keyword [en]
Deniability, Deniable encryption, Authenticated encryption, Perfect secrecy, Off-the-record, Key-exchange, Nearfield communication, Surveillance
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
URN: urn:nbn:se:kth:diva-178981DOI: 10.1007/978-3-319-26502-5_6Scopus ID: 2-s2.0-84951873415OAI: oai:DiVA.org:kth-178981DiVA: diva2:892891
Conference
20th Nordic Conference NordSec 2015
Funder
Swedish Foundation for Strategic Research , FFL09-0086Swedish Research Council, 2009-3793
Note

QC 20160208

Available from: 2016-01-11 Created: 2015-12-09 Last updated: 2018-01-10Bibliographically approved

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Bosk, DanielBuchegger, Sonja

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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