Flow logic for Dolev-Yao secrecy in cryptographic processes

  • Authors:
  • C. Bodei;P. Degano;F. Nielson;H. Riis Nielson

  • Affiliations:
  • Dipartimento di Informatica, Università di Pisa, Corso Italia 40, I-56125 Pisa, Italy;Dipartimento di Informatica, Università di Pisa, Corso Italia 40, I-56125 Pisa, Italy;Informatics and Mathematical Modelling, The Technical University of Denmark, Richard Petersens Plads Bldg. 321, DK-2800 Kongens Lyngby, Denmark;Informatics and Mathematical Modelling, The Technical University of Denmark, Richard Petersens Plads Bldg. 321, DK-2800 Kongens Lyngby, Denmark

  • Venue:
  • Future Generation Computer Systems - Parallel computing technologies (PaCT-2001)
  • Year:
  • 2002

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Abstract

We introduce the νSPI-calculus that strengthens the notion of "perfect symmetric cryptography" of the spi-calculus by making encryption history dependent. We give our calculus an operational and a static semantics. The latter is a control flow analysis (CFA), defined in the form of a flow logic, and it is proved semantically correct. We then apply our CFA to check security properties; in particular, we show that secrecy à la Dolev-Yao can be expressed in terms of the CFA.