An Efficient <i>Threshold</i> Public Key Cryptosystem Secure Against Adaptive Chosen Ciphertext Attack.

Ran Canetti Shafi Goldwasser An Efficient <i>Threshold</i> Public Key Cryptosystem Secure Against Adaptive Chosen Ciphertext Attack. 90-106 1999 EUROCRYPT http://link.springer.de/link/service/series/0558/bibs/1592/15920090.htm db/conf/eurocrypt/eurocrypt99.html#CanettiG99