DeepSec: Deciding Equivalence Properties for Security Protocols -- Improved theory and practice. (arXiv:2211.03225v1 [cs.CR])

Automated verification has become an essential part in the security
evaluation of cryptographic protocols. In this context privacy-type properties
are often modelled by indistinguishability statements, expressed as behavioural
equivalences in a process calculus. In this paper we contribute both to the
theory and practice of this verification problem. We establish new complexity
results for static equivalence, trace equivalence and labelled bisimilarity and
provide a decision procedure for these equivalences in the case of a bounded
number of protocol sessions. Our …

practice protocols security theory