Some remarks on fair exchange protocol

• Main Authors: ZHOU, Jianying, DENG, Robert H., BAO, Feng
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2000
• Subjects: fair exchange; certified mail; secure electronic commerce; Information Security
• Online Access: https://ink.library.smu.edu.sg/sis_research/1114; https://ink.library.smu.edu.sg/context/sis_research/article/2113/viewcontent/RemarksFairProtocol_2000.pdf
• Institution: Singapore Management University

Fair exchange turns out to be an increasingly important topic due to the rapid growth of electronic commerce. An exchange is deemed to be fair if at the end of exchange, either each party receives the expected item or neither party receives any useful information about the other’s item. Several protocols for fair exchange have been proposed in recent years. In this paper, we first examine a newly published fair exchange protocol and point out its flaws and weaknesses. We then put forward a more efficient and secure protocol and give an informal analysis.