Formal certification of code-based cryptographic proofs
Proceedings of the 36th annual ACM SIGPLAN-SIGACT symposium on Principles of programming languages
Modeling and Reasoning about an Attacker with Cryptanalytical Capabilities
Electronic Notes in Theoretical Computer Science (ENTCS)
FC'10 Proceedings of the 14th international conference on Financial cryptograpy and data security
A Survey of Symbolic Methods in Computational Analysis of Cryptographic Systems
Journal of Automated Reasoning
A user interface for a game-based protocol verification tool
FAST'09 Proceedings of the 6th international conference on Formal Aspects in Security and Trust
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We present a formal theory for cryptographically-sound theorem proving. Our starting point is the Backes-Pfitzmann-Waidner (BPW) model, which is a symbolic protocol model that is cryptographically sound in the sense of blackbox reactive simulatability. To achieve cryptographic soundness, this model is substantially more complex than standard symbolic models and the main challenge in formalizing and using this model is overcoming this complexity. We present a series of cryptographically-sound abstractions of the original BPW model that bring it much closer to standard Dolev-Yao style models. We present a case study showing that our abstractions enable proofs of complexity comparable to those based on more standard models. Our entire development has been formalized in Isabelle/HOL.