Self-test techniques for crypto-devices

  • Authors:
  • Giorgio Di Natale;Marion Doulcier;Marie-Lise Flottes;Bruno Rouzeyre

  • Affiliations:
  • Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier, Montpellier, France;Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier, Montpellier, France;Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier, Montpellier, France;Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier, Montpellier, France

  • Venue:
  • IEEE Transactions on Very Large Scale Integration (VLSI) Systems
  • Year:
  • 2010

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Abstract

This paper describes a generic built-in self-test strategy for devices implementing symmetric encryption algorithms. Taking advantage of the inner iterative structures of crypto-cores, test facilities are easily set-up for circular self-test of the crypto-cores, built-in pseudorandom test generation and response analysis for other cores in the host device. Main advantages of the proposed test implementation are an architecture with no visible scan chain, 100% fault coverage on crypto-cores with negligible area overhead, availability of pseudorandom test sources, and very low aliasing response compaction for other cores.