A Fair Electronic Contract Signing Protocol Based on Off-Line Trusted Third Party

Electronic contract signing is an important issue in electronic commerce,while fair electronic contract signing protocol is an application model of fair exchange protocol,but there were defects in traditional fair electronic contract signing protocols.Presents a new fair electronic contract signing protocol based on the off-line trusted third party.The protocol effectively prevents all kinds of security attacks,and improves the efficiency of the implementation.The security of the newly devised scheme is also examined and proved.It is showed that fair processes of exchange activities are guaranteed in this protocol.