Efficient Commitment Schemes with Bounded Sender and Unbounded Receiver.

Shai Halevi Efficient Commitment Schemes with Bounded Sender and Unbounded Receiver. 77-89 1999 12 J. Cryptology 2 http://link.springer.de/link/service/journals/00145/bibs/12n2p77.html db/journals/joc/joc12.html#Halevi99