@inproceedings{2131a269e3eb461ab8c15679551e2a9e,
title = "O 2 TR: Offline Off-the-Record (OTR) Messaging",
abstract = "Off-the-record (OTR) is a security protocol that can be used in privacy preserving instant messaging (IM) systems. However, the conventional OTR is not applicable in some practical scenarios (e.g., when communication network became disconnected) because OTR requires both parties to be online at the same time. To address this limitation, we extend the conventional OTR into a new protocol named offline OTR (O 2 TR). O 2 TR makes the conversation parties be able to handle an offline message even when a session connection is lost. To show the feasibility of the proposed protocol, we implemented a prototype to support O 2 TR based on the Gajim XMMP instant messaging platform. Our experiments showed that O 2 TR can reliably be used when a network party is broken down. Moreover, O 2 TR provides an efficient session refreshment which is about 34 \% faster than the original OTR.",
keywords = "Instant messaging, Key exchange, OTR",
author = "Firoozjaei, \{Mahdi Daghmehchi\} and Lee, \{Sang Min\} and Hyoungshick Kim",
note = "Publisher Copyright: {\textcopyright} 2018, Springer International Publishing AG, part of Springer Nature.; 18th World International Conference on Information Security and Application, WISA 2017 ; Conference date: 24-08-2017 Through 26-08-2017",
year = "2018",
doi = "10.1007/978-3-319-93563-8\_6",
language = "English",
isbn = "9783319935621",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
pages = "61--71",
editor = "Kang, \{Brent ByungHoon\} and Taesoo Kim",
booktitle = "Information Security Applications - 18th International Conference, WISA 2017, Revised Selected Papers",
}