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Higher radix nonrestoring modular multiplication algorithm and public-key LSI architecture with limited hardware resources

  • Masayuki Abe
  • Hikaru Morita
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 917)

Abstract

Security applications to be installed in small size hardware such as cellular phones and smart cards need a small and practical LSI for key distribution or authentication. This paper describes an improved modular multiplication algorithm and LSI architecture for public-key schemes with the goal of limiting hardware resources. The algorithm, which employs higher radix arithmetic, eliminates the slow restoring which occurs in modular multiplication. The proposed architecture is based on the use of RAM and low operation frequency. The LSI is designed to calculate 512 bit modular exponentiation within 0.1 seconds at the frequency of 17 MHz. This requires only 13 Kgates and six 512bit RAMs.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • Masayuki Abe
    • 1
  • Hikaru Morita
    • 1
  1. 1.NTT Information and Communication Systems LaboratoriesKanagawaJapan

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