A new dependable exchange protocol

Authors:
Hao Wang;Heqing Guo;Manshan Lin;Jianfei Yin;Qi He;Jun Zhang
Affiliations:
School of Computer Science and Engineering, South China University of Technology, Guangzhou 510640, China;School of Computer Science and Engineering, South China University of Technology, Guangzhou 510640, China;School of Computer Science and Engineering, South China University of Technology, Guangzhou 510640, China;College of Information Engineering, Shenzhen University, Shenzhen 518060, China;School of Computer Engineering, Nanyang Technological University, Singapore;School of Computer Engineering, Nanyang Technological University, Singapore
Venue:
Computer Communications
Year:
2006

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Abstract

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.