A new dependable exchange protocol

作者:Wang, Hao*; Guo, Heqing; Lin, Manshan; Yin, Jianfei; He, Qi; Zhang, Jun
来源:Computer Communications, 2006, 29(15): 2770-2780.
DOI:10.1016/j.comcom.2005.10.028

摘要

As electronic transaction becomes common practice in real-world business, its dependability develops into a major concern, especially in critical transactions, e.g., electronic payment and electronic contract signing. Many recent fair-exchange protocols can recover the transaction from network failures; however, few can survive local system failures. In this paper, we propose a new Dependable Exchange Protocol. With proper convertible signature scheme and message logging method, the exchange protocol provides a recovery method for network and local system failures. To the best of our knowledge, this protocol is the first fault-tolerant exchange protocol in the context of offline TTP and asynchronous channels.