VERIFPAL USER MANUAL

The security of cryptographic protocols remains as relevant as ever, with systems such as TLS and Signal being responsible for much of the Web's security guarantees. One main venue for the analysis and verification of these protocols has been automated analysis with formal verification tools, such as ProVerif, CryptoVerif and Tamarin. Indeed, these tools have led to confirming security guarantees (as well as finding attacks) in secure channel protocols, including TLS and Signal. However, formal verification in general has not managed to significantly attract a wider audience. Verifpal is new software for verifying the security of cryptographic protocols. Building upon contemporary research in symbolic formal verification, Verifpal's main aim is to appeal more to real-world practitioners, students and engineers without sacrificing comprehensive formal verification features. In order to achieve this, Verifpal introduces a new, intuitive language for modeling protocols that is much easier to write and understa