Public Key Trace and Revoke Scheme Secure against Adaptive Chosen Ciphertext Attack.

Yevgeniy Dodis Nelly Fazio Public Key Trace and Revoke Scheme Secure against Adaptive Chosen Ciphertext Attack. 100-115 2003 conf/pkc/2003 Public Key Cryptography http://link.springer.de/link/service/series/0558/bibs/2567/25670100.htm db/conf/pkc/pkc2003.html#DodisF03