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Summary: Formalization in PVS of Balancing Properties
Necessary for the Security of the Dolev-Yao
Cascade Protocol Model
Yuri Santos R^ego1
and Mauricio Ayala-Rinc´on1,2
Departments of 1
Matematics and 2
Computer Science
Universidade de Bras´ilia, 70910-900 Bras´ilia D.F., Brazil
e-mail: ayala@unb.br
February 22, 2012
Abstract
Nowadays, formalizing computationally the security of crypto-
graphic protocols is a highly sophisticated task of great relevance.
In this work, we present an algebraic approach for modeling the two-
party cascade protocol of Dolev-Yao in the specification language of
the Prototype Verification System PVS. Although cascade protocols
could be argued to be a very limited model, it should be stressed here
that they are the basis of more sophisticated protocols of great ap-
plicability such as those which allow treatment of multiparty, tuples,
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