Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/118027
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- Title
- Cryptoanalysis of the convex hull click human identification protocol
- Related
- ISC 2010 (13th : 2010) (25 - 28 October 2010 : Boca Raton, FL)
- Related
- Burmester, Mike; Tsudik, Gene and Magliveras, Spyros S.. Information security : 13th International Conference, ISC 2010, Boca Raton, FL, USA, October 25-28, 2010 : revised selected papers, p.24-30
- DOI
- 10.1007/978-3-642-18178-8_3
- Related
- Lecture notes in computer science Vol. 6531
- Publisher
- Berlin : Springer
- Date
- 2010
- Author/Creator
- Asghar, Hassan Jameel
- Author/Creator
- Li, Shujun
- Author/Creator
- Pieprzyk, Josef
- Author/Creator
- Wang, Huaxiong
- Description
- Recently a convex hull based human identification protocol was proposed by Sobrado and Birget, whose steps can be performed by humans without additional aid. The main part of the protocol involves the user mentally forming a convex hull of secret icons in a set of graphical icons and then clicking randomly within this convex hull. In this paper we show two efficient probabilistic attacks on this protocol which reveal the user’s secret after the observation of only a handful of authentication sessions. We show that while the first attack can be mitigated through appropriately chosen values of system parameters, the second attack succeeds with a non-negligible probability even with large system parameter values which cross the threshold of usability.
- Description
- 7 page(s)
- Subject Keyword
- human identification protocols
- Subject Keyword
- observer attack
- Resource Type
- conference paper
- Organisation
- Macquarie University. Dept. of Computing
- Identifier
- http://hdl.handle.net/1959.14/118027
- Identifier
- ISBN:9783642181771
- Identifier
- ISSN:0302-9743
- Identifier
- mq-rm-2010004002
- Language
- eng
- Reviewed
