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International Conference on Cryptology in India

INDOCRYPT 2005: Progress in Cryptology - INDOCRYPT 2005 pp 403–416Cite as

SCA Resistant Parallel Explicit Formula for Addition and Doubling of Divisors in the Jacobian of Hyperelliptic Curves of Genus 2

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Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 3797))

Abstract

Hyperelliptic curve cryptosystems (HECC) can be implemented on a variety of computing devices, starting from smart cards to high end workstations. Side-channel attacks are one of the most potential threats against low genus HECC. Thus efficient algorithms resistant against side channel attacks are the need of the hour. In the current work we provide implementation ready formulae for addition and doubling on curves of genus 2 which are shielded against simple side-channel analysis by having a uniform performance. This is achieved by applying the concept of side-channel atomicity – introducing cheap dummy operations to make all traces look identical.

So far a detailed study of countermeasures against side-channel attacks exists only for differential attacks. There one assumes that the performance is made predictable by other means. But apart from the double-and-alway-add approach only generalizations of the Montgomery form were suggested and only for odd characteristic. They are less efficient and do not combine well with some of the countermeasures against differential attacks. Hence, our contribution closes the gap to achieve secured implementations of HECC on devices exposed to side-channel attacks.

To increase the performance even further we show how our formulae can be implemented in parallel on two multipliers using a low number of registers. It is also possible to combine our method with precomputations.

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Author information

Authors and Affiliations

  1. Department of Mathematics, Technical University of Denmark, Matematiktorvet – 303, DK-2800, Kgs. Lyngby, Denmark

    Tanja Lange

  2. Centre for Information Security and Cryptography (CISaC), University of Calgary, Calgary, AB, T2N 1N4, Canada

    Pradeep Kumar Mishra

Authors
  1. Tanja Lange
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  2. Pradeep Kumar Mishra
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Editor information

Editors and Affiliations

  1. Indian Statistical Institute, 203 B T Road, 700 108, Kolkata, India

    Subhamoy Maitra

  2. Indian Institute of Science, Bangalore

    C. E. Veni Madhavan

  3. Microsoft Research India Private Limited, “Scientia”, No:196/36, 2nd Main Road, Sadashivnagar, 560080, Bangalore, India

    Ramarathnam Venkatesan

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Lange, T., Mishra, P.K. (2005). SCA Resistant Parallel Explicit Formula for Addition and Doubling of Divisors in the Jacobian of Hyperelliptic Curves of Genus 2. In: Maitra, S., Veni Madhavan, C.E., Venkatesan, R. (eds) Progress in Cryptology - INDOCRYPT 2005. INDOCRYPT 2005. Lecture Notes in Computer Science, vol 3797. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11596219_32

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  • DOI: https://doi.org/10.1007/11596219_32

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-30805-8

  • Online ISBN: 978-3-540-32278-8

  • eBook Packages: Computer ScienceComputer Science (R0)

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