Véronique Cortier (LORIA, CNRS, Nancy) VERIFICATION TECHNIQUES FOR CRYPTOGRAPHIC PROTOCOLS ---------------------------------------------------------------------- Security protocols are short programs aiming at securing communications over a network. They are widely used in our everyday life. Their verification using symbolic models has shown its interest for detecting attacks and proving security properties. In particular, several automatic tools have been developed. In this talk, we will review results and techniques that allow automatic analysis of security protocols. We will see in particular how rewriting systems are used for reflecting algebraic properties of the cryptographic primitives used in protocols.