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Title: Multi-party off-the-record messaging
Authors: Goldberg, Ian
Ustaoğlu, Berkant
Van Gundy, Matthew D.
Chen, Hao
Keywords: Communication
Instant messaging
Issue Date: 2009
Publisher: Association for Computing Machinery (ACM)
Source: Goldberg, I., Ustaoğlu, B., Van Gundy, M. D., and Chen, H. (2009, November 9-13). Multi-party off-the-record messaging. Paper presented at the 16th ACM Conference on Computer and Communications Security, CCS'09. doi:10.1145/1653662.1653705
Abstract: Most cryptographic algorithms provide a means for secret and authentic communication. However, under many circumstances, the ability to repudiate messages or deny a conversation is no less important than secrecy and authenticity. For whistleblowers, informants, political dissidents and journalists - to name a few - it is most important to have means for deniable conversation, where electronic communication must mimic face-to-face private meetings. Off-the-Record Messaging, proposed in 2004 by Borisov, Goldberg and Brewer, and its subsequent improvements, simulate private two-party meetings. Despite some attempts, the multi-party scenario remains unresolved. In this paper, we first identify the properties of multi-party private meetings. We illustrate the differences not only between the physical and electronic medium but also between two- and multi-party scenarios, which have important implications for the design of private chatrooms. We then propose a solution to multi-party off-the-record instant messaging that satisfies the above properties. Our solution is also composable with extensions that provide other properties, such as anonymity. Copyright 2009 ACM.
Description: 16th ACM Conference on Computer and Communications Security, CCS'09; Chicago, IL; United States; 9 November 2009 through 13 November 2009
ISBN: 9781605583525
ISSN: 1543-7221
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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