IMPROVING THE CONTROL STRATEGY IN TWO-WAY DETERMINISTIC CRYPTOGRAPHIC PROTOCOLS

Strategy properties for cryptographic protocols

Names in Cryptographic Protocols

Messages in cryptographic protocols are made up of a small set of elements; keys, nonces, timestamps, and names, amongst others. These elements must possess specific properties to be useful for their intended purpose. Some of these properties are prescribed as part of the protocol specification, while others are assumed to be inherited from the execution environment. We focus on this latter cat...

Two-Way Protocols for occam-π

In the occam-π programming language, the client-server communication pattern is generally implemented using a pair of unidirectional channels. While each channel’s protocol can be specified individually, no mechanism is yet provided to indicate the relationship between the two protocols; it is therefore not possible to statically check the safety of client-server communications. This paper prop...

Bisimulation-based non-deterministic admissible interference and its application to the analysis of cryptographic protocols

In this paper, we first define bisimulation-based non-deterministic admissible interference (BNAI), derive its process-theoretic characterisation and present a compositional verification method with respect to the main operators over communicating processes, generalising in this way the similar trace-based results obtained [J. Univ. Comput. Sci. 6 (2000) 1054] into the finer notion of observati...

Cryptographic protocols in optical communication

Quantum key distribution (QKD) is a technique that allows two parties (Alice and Bob) to generate a secret key despite the computational and technological power of an eavesdropper (Eve) who interferes with the signals. Together with the Vernam cipher, QKD can be used for unconditionally secure data transmission. In a typical realization of QKD one can distinguish two phases in order to generate...