In the synchronous model presented ideal functionalities as well as parties can be equipped with a ``shell'' which can delay communication until the adversary allows delivery or the number of rounds since the shell received the message exceeds a specified threshold. This additionally allows asynchronous specification of ideal functionalities and allows to model a network where messages are not necessarily delivered in the right order. If these latency times are chosen to be infinite the network is no more reliable and becomes completely asynchronous. It is shown that secure protocols in the setting of [Canetti01] or [CLOS02] can be transformed to secure realizations in the new model if latency times are chosen to be infinite.
Category / Keywords: cryptographic protocols / multi-party computations, oblivious transfer Date: received 26 Jan 2004 Contact author: hofheinz at ira uka de Available format(s): Postscript (PS) | Compressed Postscript (PS.GZ) | PDF | BibTeX Citation Version: 20040127:083135 (All versions of this report) Short URL: ia.cr/2004/016 Discussion forum: Show discussion | Start new discussion