Memoirs of the Faculty of Engineering, Okayama University 43巻
2009-01 発行
Sakemi, Yumi
Graduate School of Natural Science and Technology, Okayama University
Kato, hidehiro
Graduate School of Natural Science and Technology, Okayama University
Morikawa, Yoshikawa
Graduate School of Natural Science and Technology, Okayama University
Barreto–Naehrig (BN) curve has been introduced as an efficient pairing-friendly elliptic curve over prime field F(p) whose embedding degree is 12. The characteristic and Frobenius trace are given as polynomials of integer variable X. The authors proposed an improvement of Miller's algorithm of twisted Ate pairing with BN curve by applying X of small hamming weight in ITC–CSCC2008; however, its cost evaluation has not been explicitly shown. This paper shows the detail of the cost evaluation.