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The Study and Application of Electronic Contract Signing Protocol

Author: LiChengGuo
Tutor: JiangRongAn
School: Dalian University of Technology
Course: Applied Computer Technology
Keywords: Electronic Contract Signing Protocol Cryptology Digital Signature Digital Envelope
CLC: TP393.08
Type: Master's thesis
Year: 2008
Downloads: 152
Quote: 1
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The perfection of digital signature technology and the implementation of Electronic Signature Law promote the development of E-commerce. The application of E-commerce becomes widely. In its application, electronic contracts solution is a hot spot in recent years. But currently the designed electronic contract signing protocols by domestic and foreign scholars are not perfect and almost in theoretical research stage.This paper is based on the legitimacy, security and equality of the transaction in E-commerce. In order to solve the existing problems of electronic contract signing protocols that is if the sponsor of contract doesn’t receive the contract signature of responder, he will wait all the time. This paper designed a secure and efficient electronic contract signing protocol which includes three sub-protocols: contract signing exchange sub-protocol, contract cancellation sub-protocol and dispute resolve sub-protocol. In exception, the signing cancellation sub-protocol in this paper can cancel the signing of contract sponsor, so he will not wait all the time. This paper also applied the electronic contract signing protocol, cryptology and J2EE technique, developed a contract sign system. The system is based on B/S mode, using eclipse as development tool, MySQL database software. The system uses business flow chart to build system logic module, implementing five function modules: generate of user key, the deal with of electronic contract, generate of contract signing, contract signing verify and the deal with of exception. The use of treble DES cryptographic algorithm makes the security of contract information. The use of digital envelope technology resolved the hard problem of key distribution. The SHA-1 hash function validates the contract information whether it is varied.Although the first electronic contract has already emerged in China, in the world traditional paper contracts still dominate. Electronic contracts hasn’t widely used. The electronic contract signing system in this paper could sign secure and efficient electronic contract; it also has theoretical value and application value.

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