Flexible Prime-Field Genus 2 Hyperelliptic Curve Cryptography Processor with Low Power Consumption and Uniform Power Draw

Abstract

This paper presents an energy -efficient (low power) prime-field hyperelliptic -curve cryptography (HECC) processor with uniform power draw. The HECC processor performs divisor scalar multiplication on the Jacobian of genus 2 hyperelliptic curves defined over prime fields for arbitrary field and curve parameters. It supports the most frequent case of divisor doubling and addition. The optimized implementation, which is synthesized in a 0.13 mm standard CMOS technology, performs an 81 -bit divisor multiplication in 503 ms consuming only 6.55 mJ of energy (average pow er consumption is 12.76 mW.) We also present a technique to make the power consumption of the HECC processor more uniform and lower the peaks of its power consumption .