论文标题:可验证秘密共享及在代理签名中的应用
The Study and Implementation of Web-Based Workflow Management System
论文作者 王岩
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 100,论文页数 42页File Size2138k
2004-04-01论文网 http://www.lw23.com/lunwen_521104222/ 秘密共享;可验证秘密共享;可公开验证的秘密共享;代理签名;椭圆曲线密码体制
Secret sharing;verifiable secret sharing;publicly verifiable secret sharing;proxy signature;elliptic curves cryptosystem
可验证秘密共享是保护重要而敏感信息的有用工具，常用于设计安全的密码协议。代理签名是电子化的信息社会里解决权力委托的一种常用的方法。本论文的研究重点是研究可验证秘密共享(可公开验证的秘密共享)并将其应用于代理签名。主要成果如下： (1) 对可验证秘密共享的研究，特别是对几个常用的可验证秘密共享方案进行了系统总结。 (2) 对有三个群体作为参与者的可验证秘密共享进行了研究，设计了可验证的联合共享秘密再分配协议。 (3) 对可公开验证的秘密共享进行了研究，给出了基于椭圆曲线密码体制的双重离散对数证明协议和可公开验证的分布式密钥生成协议。 (4) 总结了代理签名的研究现状，给出了一个被指定的多重代理签名方案。 (5) 应用可验证的联合共享秘密再分配协议，设计了一个基于椭圆曲线密码体制的两级门限代理门限签名方案。 (6) 应用基于椭圆曲线密码体制的双重离散对数证明协议和可公开验证的分布式密钥生成协议，设计了基于椭圆曲线密码体制的门限代理盲签名方案和可公开验证的分布式代理盲签名方案。
Verifiable secret sharing is an important tool in the design of cryptography protocols. Proxy signature is a useful method in delegating signer"s signing capability. The research of this dissertation focuses on verifiable secret sharing (publicly verifiable secret sharing) and proxy signature.Following are the results of the thesis:1: A survey on verifiable secret sharing especially some protocols is given.2: Analyzing the drawback of some main verifiable secret sharing protocols, we propose a new verifiable joint secret redistribution protocol.3: By studying on publicly verifiable secret sharing, a proof of knowledge of a double discrete logarithm based on elliptic curves and a publicly verifiable distributed key generation protocol are given.4: A survey on proxy signature and a nominative multi-proxy signature scheme are given.5: Applying the verifiable joint secret redistribution protocol, two classes threshold proxy threshold signature scheme based on ECC(elliptic curves cryptosystem) is proposed.6: Applying the proof of knowledge of a double discrete logarithm based on ECC and the publicly verifiable distributed key generation protocol, threshold proxy blind signature scheme based on ECC and publicly verifiable distributed proxy blind signature scheme are given.
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