Abstract
Electronic Commerce (EC) has made rapid progress in recent years. Internet auctions have become especially popular in EC. Recently, Jiang-Pan-Li (JPL) proposed an improvement on Chang et al.’s efficient anonymous auction protocols in order to overcome the security weakness in the initiation phase of Chang et al.’s protocol. The current paper, however, points out that JPL’s initiation protocol is inefficiently designed and then, two optimized initiation protocols are presented to resolve such problems.
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