Atsushi Fujioka Tatsuaki Okamoto Shoji Miyaguchi ESIGN: An Efficient Digital Signature Implementation for Smard Cards. 446-457 http://link.springer.de/link/service/series/0558/bibs/0547/05470446.htm 1991 EUROCRYPT db/conf/eurocrypt/eurocrypt91.html#FujiokaOM91