A hardware processor supporting elliptic curve cryptography for less than 9 kGEs

  • Authors:
  • Erich Wenger;Michael Hutter

  • Affiliations:
  • Institute for Applied Information Processing and Communications (IAIK), Graz University of Technology, Graz, Austria;Institute for Applied Information Processing and Communications (IAIK), Graz University of Technology, Graz, Austria

  • Venue:
  • CARDIS'11 Proceedings of the 10th IFIP WG 8.8/11.2 international conference on Smart Card Research and Advanced Applications
  • Year:
  • 2011

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Abstract

Elliptic Curve Cryptography (ECC) based processors have gained large attention in the context of embedded-system design due to their ability of efficient implementation. In this paper, we present a low-resource processor that supports ECC operations for less than 9 kGEs. We base our design on an optimized 16-bit microcontroller that provides high flexibility and scalability for various applications. The design allows the use of an optimized RAM-macro block and reduces the complexity by sharing various resources of the controller and the datapath. Our results improves the state of the art in low-resource $\mathbb{F}_{2^{163}}$ ECC implementations (14% less area needed compared to the best solution reported). The total size of the processor is 8,958 GEs for a 0.13 μ m CMOS technology and needs 285 kcycles for a point multiplication. It shows that the proposed solution is well suitable for low-power designs by providing a power consumption of only 3.2 μ W at 100 kHz.