Robust off-line e-cash scheme with recoverability and anonymity revocation

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• 作者：Feng Wang ; Chin-Chen Chang and Shih-Chang Chang
• 刊名：Security and Communication Networks
• 出版年：2016
• 出版时间：25 September 2016
• 年：2016
• 卷：9
• 期：14
• 页码：2412-2421
• 全文大小：345K
• ISSN：1939-0122

文摘

Recently, electronic cash has become a hot topic issue with the concurrent sustainable growth of electronic commerce. In practice, however, most current electronic cash schemes do not satisfy all necessary requirements. In this paper, we point out flaws in the Fan et al. scheme and based on their scheme, propose a new off-line e-cash scheme. We use an ElGamal signature instead of the chameleon hash function to revise the problem of forgeability and reusability in the original scheme. We use an expiration date to improve the management efficiency of the bank's database and resolve the lost privacy problem in the recovery protocol. Our proposed scheme provides security without increasing computation and communication costs compared with the Fan et al. scheme. Copyright