An efficient implementation of pairing-based cryptography on MSP430 processor

Abstract

In this paper, we present a highly optimized implementation of $$\eta _T$$ pairing on 16-bit MSP430 processor. Until now, TinyPBC provided the most optimized implementation of $$\eta _T$$ pairing on sensor platforms. Although it is well optimized for finite field arithmetic, it is not optimized at an extension field arithmetic level. Moreover, since TinyPBC requires considerable amount of memory consumption, its usability is limited on a memory-constrained sensor platforms. We have focused on optimizing not only field arithmetic level but also extension field arithmetic level. In comparison with TinyPBC, the field reduction performance could be improved about 29.1% by our proposed method. We achieved 12.22% of performance improvement for extension field sparse multiplication. Our $$\eta _T$$ pairing implementation on MSP430 computes single pairing in 1.22 s, and this result is 5.88% faster than TinyPBC. Furthermore, it requires 19.2% less memory than TinyPBC.