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Proxy signatures the institutional and analysis of research

Author: XieFuNa
Tutor: XuQiuLiang
School: Shandong University
Course: Applied Computer Technology
Keywords: Public-key cryptosystem Digital Signature Proxy signature Proxy multi-signature Threshold Signature Proxy Blind Signature E-commerce
CLC: TP309
Type: Master's thesis
Year: 2005
Downloads: 113
Quote: 8
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Abstract


Digital signature and its related research is one of the most active areas of modern cryptography and information security is a very important and a great value research topics. In this thesis, a number of special digital signature. Is divided into five chapters, the first four chapters of proxy signature scheme, a typical proxy signature scheme, designated confirmer signatures, multiple digital signatures typical signature scheme, and some programs were improved proposed a secure digital signature scheme specified recipient. The work done in this article are: 1, the important status of digital signature in information security, an overview of the background, status and progress of proxy signature. Public key cryptographic system is a very important research, and perfect the mechanism of digital signature or not in terms of digital authentication system has decisive significance in the research area of ??network and information security, digital signature is the popular hot public key infrastructure facilities PKI-based digital signature mechanisms considerable emphasis on information security circles. The proxy signature widely used in mobile agents, e-commerce and e-voting. However, existing proxy signature scheme, there are still some issues to be resolved and perfect: how to solve the non-repudiation of proxy signature, how to resist the public key substitution attack, forgery attack and conspiracy attack, how to address the use of a secure channel, and how distributed proxy signature human powers, how to effectively achieve the interests of the confidentiality of proxy signature. To solve these problems, the proxy signature event of a dispute, and how to protect the recipient. 2, introduced the concept of proxy signature requirements, classification, given several typical proxy signature scheme. In the real world, people often need to own some of the powers entrusted to a reliable agent, the agent on behalf of himself and to the exercise of these powers. Can delegate powers, including the right to people's signatures. The delegate signature right traditional method is to use a seal, because the seal flexible people. A digital signature is the handwritten signature of the electronic analog and digital signature can not provide proxy functionality. Mambo, Usuda and Okamot was first proposed in 1996, proxy signature (Proxy signature) Mambo etc. that proxy signature scheme should satisfy the non-repudiation, verifiability, unforgeability distinguishable identify such properties and gives three types of proxy signatures: full proxy signature, some proxy signature and proxy signature authorization certificate. We review the basic concepts and theory of the proxy signature scheme, discusses the existing disciplinary development of several typical proxy signature scheme. programs.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > General issues > Security and confidentiality
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