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Aspects of Modeling and Verifying Secure Procedures

Security protocols are specifications for exchanging messages on a possibly insecure network. They aim at achieving some security goals (\eg authenticating the parties involved in a communication, or preserving confidentiality of certain messages) preventing some malicious party to achieve advantages for its own. Goals of security protocols are generally achieved through the use of cryptography, the art of writing in secret characters, not comprehensible to anyone but the sender and the intended recipient. There is however a branch, in the computer science community, that, among its wide field of activities, aims at studying possible attacks on secure procedures without breaking cryptography, \eg by manipulating some of the exchanged messages. This is the formal methods community, with an eye for security. This thesis mainly investigates the formal modeling and analysis of security protocols, both with finite and non finite behaviour, both within a process-algebraic and an automata framework. Real life protocols for signing and protecting digital contents and for giving assurance about authentic correspondences will be specified by means of the above cited formalisms, and some of their properties will be verified by means of formal proofs and automated tools. The original contributions of this thesis are the following.


2005

Autori: Petrocchi M.
Autori IIT:

Tipo: Rapporti tecnici, manuali, carte geologiche e tematiche e prodotti multimediali
Area di disciplina: Information Technology and Communication Systems
Technical Report IIT TR-24/2005
Attività: Metodi formali per la sicurezza di sistemi ICT