Non-interference is a definition of security introduced for the analysis of confidential information flow in computer systems. In this paper, a probabilistic notion of non-interference is used to reveal information leakage which derives from the probabilistic behavior of systems. In particular, as a case study, we model and analyze a non-repudiation protocol which employs a probabilistic algorithm to achieve a fairness property. The analysis, conducted by resorting to a definition of probabilistic non-interference in the context of process algebras, confirms that a solely nondeterministic approach to the information flow theory is not enough to study the security guarantees of cryptographic protocols.

Security Analysis of a Probabilistic Non-repudiation Protocol

ALDINI, ALESSANDRO;
2002-01-01

Abstract

Non-interference is a definition of security introduced for the analysis of confidential information flow in computer systems. In this paper, a probabilistic notion of non-interference is used to reveal information leakage which derives from the probabilistic behavior of systems. In particular, as a case study, we model and analyze a non-repudiation protocol which employs a probabilistic algorithm to achieve a fairness property. The analysis, conducted by resorting to a definition of probabilistic non-interference in the context of process algebras, confirms that a solely nondeterministic approach to the information flow theory is not enough to study the security guarantees of cryptographic protocols.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11576/1892521
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