Jinhui Chao Osamu Nakamura Kohji Sobataka Shigeo Tsujii Construction of Secure Elliptic Cryptosystems Using CM Tests and Liftings. 95-109 http://link.springer.de/link/service/series/0558/bibs/1514/15140095.htm 1998 conf/asiacrypt/1998 ASIACRYPT db/conf/asiacrypt/asiacrypt98.html#ChaoNST98