A correlation based detection system for keys reuse in SSH/SSL

  • Authors:
  • Nabil El Kadhi

  • Affiliations:
  • Computer Engineering Department, Ahlia University, Manama, Bahrain and EPITECH, France, European Institut of Technology, Kremlin Bicetre, France

  • Venue:
  • AMERICAN-MATH'11/CEA'11 Proceedings of the 2011 American conference on applied mathematics and the 5th WSEAS international conference on Computer engineering and applications
  • Year:
  • 2011

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Abstract

This paper introduces a key correlation based cryptographic protocol analyzer. This analyzer uses network events and information as inputs and applies a set of abstract interpretation techniques for key correlation-reuse detection purpose. CSA or Correlation System Analyzer has been designed in two modules : Information collection sniffers or sondes and information analyzer that is based on formal verification method The designed tool tracks coherence and freshness of cryptographic keys used through an SSL (Secure Socket Layer) or SSH (Secure SHell) sessions. CSA is also able to verify secret preservation of crucial information by propagating specific constraints. This paper describes CSA global architecture and operator mode, it also includes significant results and experimentations.