FLOC 2018: FEDERATED LOGIC CONFERENCE 2018
Automated Unbounded Verification of Stateful Cryptographic Protocols with Exclusive OR

Authors: Jannik Dreier, Lucca Hirschi, Sasa Radomirovic and Ralf Sasse

Paper Information

Title:Automated Unbounded Verification of Stateful Cryptographic Protocols with Exclusive OR
Authors:Jannik Dreier, Lucca Hirschi, Sasa Radomirovic and Ralf Sasse
Proceedings:CSF CSF Proceedings
Editors: Stephen Chong, Stephanie Delaune and Deepak Garg
Keywords:security protocols, formal methods, automated verification
Abstract:

ABSTRACT. Exclusive-or (XOR) operations are common in cryptographic protocols, in particular in RFID protocols and electronic payment protocols. Although there are numerous applications, due to the inherent complexity of faithful models of XOR, there is only limited tool support for the verification of cryptographic protocols using XOR.

The Tamarin prover is a state-of-the-art verification tool for cryptographic protocols in the symbolic model. In this paper, we improve the underlying theory and the tool to deal with an equational theory modeling XOR operations. The XOR theory can be freely combined with all equational theories previously supported, including user-defined equational theories. This makes Tamarin the first tool to support simultaneously this large set of equational theories, protocols with global mutable state, an unbounded number of sessions, and complex security properties including observational equivalence. We demonstrate the effectiveness of our approach by analyzing several protocols that rely on XOR, in particular multiple RFID-protocols, where we can identify attacks as well as provide proofs.

Pages:15
Talk:Jul 12 11:30 (Session 74A: Security protocols II)
Paper: