Masafumi Kusakawa Harunaga Hiwatari Tomoyuki Asano Seiichi Matsuda Efficient Dynamic Broadcast Encryption and Its Extension to Authenticated Dynamic Broadcast Encryption. 31-48 2008 CANS http://dx.doi.org/10.1007/978-3-540-89641-8_3 conf/cans/2008 db/conf/cans/cans2008.html#KusakawaHAM08