Efficient Designated Confirmer Signatures Without Random Oracles or General Zero-Knowledge Proofs.

Craig Gentry David Molnar Zulfikar Ramzan Efficient Designated Confirmer Signatures Without Random Oracles or General Zero-Knowledge Proofs. 662-681 2005 conf/asiacrypt/2005 ASIACRYPT http://dx.doi.org/10.1007/11593447_36 db/conf/asiacrypt/asiacrypt2005.html#GentryMR05