Identity-Based Hierarchical Strongly Key-Insulated Encryption and Its Application.

Yumiko Hanaoka Goichiro Hanaoka Junji Shikata Hideki Imai Identity-Based Hierarchical Strongly Key-Insulated Encryption and Its Application. 495-514 2005 conf/asiacrypt/2005 ASIACRYPT http://dx.doi.org/10.1007/11593447_27 db/conf/asiacrypt/asiacrypt2005.html#HanaokaHSI05