@misc{cryptoeprint:2012:042, author = {Naoyuki Shinohara and Takeshi Shimoyama and Takuya Hayashi and Tsuyoshi Takagi }, title = {Key Length Estimation of Pairing-based Cryptosystems using $\eta_T$ Pairing}, howpublished = {Cryptology ePrint Archive, Report 2012/042}, year = {2012}, url = {http://eprint.iacr.org/2012/042}, }