云计算中支持隐私保护的多银行电子现金系统

Electronic Cash System with Multiple Banks to Support Privacy Protection for Cloud Computing

鉴于云计算可以解决传统网络中电子现金系统的隐私泄漏、交易不规范和高成本投入等问题,提出一种云环境中支持隐私保护的多银行电子现金方案.该方案运用可信平台模块(Trusted Platform Module,TPM)提供的隐私保护和远程证明功能,实现从电子支付系统终端到上层应用的安全性,运用群签名技术提高电子现金支付的效率和匿名性.最后对提出的方案进行了安全性分析.

According to the new characteristics of cloud computing, it can solve the problems that the e- lectronic cash systems exist leakage of privacy, non-standard transactions and high cost in the traditional net- work. In the existing work, considering merchants and customers use the same bank to restrict the widespread use of electronic cash in a certain degree, an electronic cash scheme with multiple banks to support privacy pro- tection for cloud computing is presented. The scheme uses privacy protection and remote attestation function with trusted platform module to achieve security that is from the terminal of electronic payment system to the upper application; and group signature technology is to improve efficiency and anonymity of e-cash payment. Finally, the safety of the scheme is proposed.