电子商务中的密钥托管技术  

Technology of Key Escrow in Electronic Commerce

作　　者：潘耘[1] 冷英男[1] 王自军[1] 任晓蕾[1] 

机构地区：[1]抚顺石油学院信息工程分院,辽宁抚顺113001

出　　处：《抚顺石油学院学报》2001年第2期49-52,共4页Journal of Fushun Petroleum Institute

摘　　要：电子商务随着Internet的迅速发展 ,日益受到人们的关注。但其安全问题经常令人不敢涉足其中。一方面参加商务活动的主体需防止另一方抵赖活动 ,另一方面政府安全机构为跟踪截获犯罪嫌疑人员的通信 ,都需要通过合法渠道获得电子商务中商务活动的主体进行数据通讯时的加密密钥。此时需采用密钥托管技术 ,而且密钥托管必须是安全的。为了安全起见 ,密钥被分成几块 ,分别存在几位可信赖的委托人处进行托管 ,任何一位委托人都不能单独恢复密钥。只有几位委托人在一起才能回复密钥。为了有效安全的进行密钥托管 ,采用了离散对数解决密钥托管。鉴于本算法的安全性依赖与求离散对数的困难性 ,所以当选用很大的安全素数时 ,此算法既简单又安全。并在SET中加入了此密钥托管技术 。With the rapid development of Internet electronic commerce has been noticed increasingly. However, the problem of its security makes people not dare into this advanced field. The subjects involving in electronic commerce activities need to prevent the other subjects from denying their activities. Some security organizations of government also need to get the encrypted key through legal means in order to track, intercept and capture criminal information. Thus the encrypted key escrow technology must be adopted and it must be of security. For the sake of security the key will be divided into several blocks which are stored in different reliable agents. The key can not be restored unless all agents work together. For designing an effective and safe key escrow, the discrete logarithm is applied for solving key escrow. The security of this algorithm completely depends on the difficulty to solve discrete logarithm, therefore, this algorithm is secure and simple when a big prime number is adopted. Moreover, adding this technology in SET will benefit the legal agency to monitor illegal activities.

关 键 词：电子商务 离散对数 密钥托管 授权中心 计算机网络 

分 类 号：F713.36[经济管理—产业经济] TP393.08[自动化与计算机技术—计算机应用技术]