论文标题:基于网络的秘密共享及其应用
Design and Implementation of the Control on Media Resources in the Softswitch-Based MSC
论文作者 李彦江
论文导师 马传贵,论文学位 硕士,论文专业 应用数学
论文单位 解放军信息工程大学,点击次数 73,论文页数 56页File Size2935k
2004-04-01论文网 http://www.lw23.com/lunwen_26960232/ 多密钥共享;TCP端口;分布式网络;椭圆曲线密码;XTR;身份验证;门限
multiple keys sharing; TCP port; Distributed Networks; ECC; XTR; threshold;Identification Authentication.
秘密共享在密钥管理中有着非常重要的作用，随着全球信息化的不断深入和扩大，基于网络的秘密共享成为一种新兴技术；而面对日新月异的网络技术，构建依托于分布式系统的秘密共享成为当前的热点课题。面对密钥量的不断增加，现实可行的多密钥共享方案成为人们自然追求的目标。针对以上问题，本文设计了基于网络的门限多密钥共享技术。 在非同步分布式网络中实现秘密共享，就要充分发挥分布式网络在消息并发传送、临界区访问、存取的优势。本文在这方面主要取得了以下结果： (1) 基于椭圆曲线密码的安全性和TCP端口，建立了非同步可验证多密钥共享AVMKS模型及多密钥刷新协议。另外，在恢复秘密时，基于代数方程组的解问题，提出了一种不同于Lagrange多项式插值法和NIST数字签名体制的方法，提高了该模型执行的效率。 (2) 基于门限多密钥共享体制，设计了一种可供大规模选举的电子投票方案；它可以允许系统中存在多个监票人(机构)。即使在选票的生成、加密、传输及解密、统计过程中存在自适应的敌手，也不影响选举的正常进行。 (3) 基于XTR，设计了一种可供门限多密钥共享模型中成员身份验证的方法。当用于电子货币的防敲诈问题时，其执行的成功率较普通PIN方案提高了六之一。
Secret sharing scheme plays an important role in Key Management. With the development of the informationization all over the world, a secret sharing scheme based on computer networks becomes a new technology. The network technology changing with each passing day, it is a hotspot to build a secret sharing scheme depending on the distributed networks systems. People go in for a practical and feasible multiple keys sharing scheme in the face of the augment of keys scale. Therefore ,we propose a threshold multiple keys sharing scheme based on computer networks.To realize the multiple keys sharing in asynchronous distributed networks, the superiority of which lies in the concurrency of messages" sending, receiving and reserving in critical sections. According to the problems mentioned moment, three conclusions are advised as follows:(1)A scheme of asynchronous verifiable multiple keys sharing(AVMKS) and a proposal of refreshing are presented based on the security of ECC and TCP port of the servers in asynchronous distributed networks. In addition, a new method is presented to restore the secret based on the solution of algebraic equations, which is different from Lagrange interpolating polynomial and NIST digital signature scheme and also improves its efficiency.(2)A new electronic voting scheme for a large scale election activity is given based on the AVMKS scheme. Even if there exist up to t adaptive adversaries, this scheme can guard the ballots" producing, encrypting, transmitting, decrypting and final tally in spite of the adversaries"s attack.(3)A method of Identification Authentication of the members in AVMKS scheme is presented based on XTR.When the method is used to prevent the blackmailer in electronic cash,the valid successful possibility of which improves one sixth.
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