文章基本信息

标题：Recursion vs. Replication in Simple Cryptographic Protocols
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作者：Hans Hüttel ; Jirí Srba
期刊名称：BRICS Report Series
印刷版ISSN：0909-0878
出版年度：2004
卷号：11
期号：23
出版社：Aarhus University
摘要：We use some recent techniques from process algebra to draw several conclusions about the well studied class of ping-pong protocols introduced by Dolev and Yao. In particular we show that all nontrivial properties, including reachability and equivalence checking wrt. the whole van Glabbeek's spectrum, become undecidable for a very simple recursive extension of the protocol. The result holds even if no nondeterministic choice operator is allowed. We also show that the extended calculus is capable of an implicit description of the active intruder, including full analysis and synthesis of messages in the sense of Amadio, Lugiez and Vanackere. We conclude by showing that reachability analysis for a replicative variant of the protocol becomes decidable.