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Frankin和Tsudik在FC′98中给出了两个多方交换协议 ,此协议是关于多方交换的公平交换协议 ,本文发现了对其中第一个协议 (SUCEX 1)的攻击 ,指出该协议是一个不公平交换协议 ,并给出了此协议的一种改进形式
Frankin and Tsudik gave two multi-party exchange protocols in FC’98. This protocol is a fair exchange protocol for multi-party exchange. This paper discovers the attack on the first of these protocols (SUCEX 1) and points out that the protocol is a Fair exchange agreement, and gives an improved form of this agreement