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Issue title: CSFW16
Article type: Research Article
Authors: Halpern, Joseph Y. | O'Neill, Kevin R.; *
Affiliations: Department of Computer Science, Cornell University, USA. E-mail: halpern@cs.cornell.edu, oneill@cs.cornell.edu
Correspondence: [*] Corresponding author. Department of Computer Science, 4130 Upson Hall, Cornell University, Ithaca, NY 14850, USA, Fax: +1 607 255 4428. Phone contact should be made through Cindy Robinson, +1 607 255 0985.
Abstract: We provide a framework for reasoning about information-hiding requirements in multiagent systems and for reasoning about anonymity in particular. Our framework employs the modal logic of knowledge within the context of the runs and systems framework, much in the spirit of our earlier work on secrecy [13]. We give several definitions of anonymity with respect to agents, actions, and observers in multiagent systems, and we relate our definitions of anonymity to other definitions of information hiding, such as secrecy. We also give probabilistic definitions of anonymity that are able to quantify an observer's uncertainty about the state of the system. Finally, we relate our definitions of anonymity to other formalizations of anonymity and information hiding, including definitions of anonymity in the process algebra CSP and definitions of information hiding using function views.
Keywords: Anonymity, security, formal methods, epistemic logic
DOI: 10.3233/JCS-2005-13305
Journal: Journal of Computer Security, vol. 13, no. 3, pp. 483-514, 2005
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