Adding timestamps to the secure electronic auction protocol

摘要

Recently, Subramanian proposed a secure electronic auction protocol. It was claimed that the auction protocol ensured anonymity, security, privacy, atomicity, and low overhead. However, the sensitive information of payment, such as credit card number, can be revealed by the auctioneer. The bid can be forged by a malicious auctioneer. Also, the situation of two or more bidders who offered the same price was not resolved efficiently. In this paper, we will improve the robustness of this electronic auction protocol.