Non destructive evaluation of adhesive bonds by pulse-stimulated infrared thermography

Tire de : 18th Annual review of progress in quantitative non destructive evaluation, Brunswick GA, July 28 - August 2, 1991SIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1991 v.137 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Photoacoustic microscopy by photodeformation applied to thermal diffusivity determination

In 'Proceedings of european conference on thermophysical properties, Vienna (Austria), September 24-28, 1990. To be published in 'High temperatures- high pressures'Available at INIST (FR), Document Supply Service, under shelf-number : 22419, issue : a.1990 n.179 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc

Securing RSA against fault analysis by double addition chain exponentiation

Abstract. Fault Analysis is a powerful cryptanalytic technique that enables to break cryptographic implementations embedded in portable devices more efficiently than any other technique. For an RSA implemented with the Chinese Remainder Theorem method, one faulty execution suffices to factorize the public modulus and fully recover the private key. It is therefore mandatory to protect embedded implementations of RSA against fault analysis. This paper provides a new countermeasure against fault analysis for exponentiation and RSA. It consists in a self-secure exponentiation algorithm, namely an exponentiation algorithm that provides a direct way to check the result coherence. An RSA implemented with our solution hence avoids the use of an extended modulus (which slows down the computation) as in several other countermeasures. Moreover, our exponentiation algorithm involves 1.65 multiplications per bit of the exponent which is significantly less than the 2 required by other self-secure exponentiations.