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The Improvement of CPK and the Design and Analysis of Electronic Payment Protocols Based on CPK

Author: ZhaoYuan
Tutor: LiYiFa
School: PLA Information Engineering University
Course: Cryptography
Keywords: Combined Public Key ( CPK ) Security protocol analysis of the intrinsic logic Electronic payment Secure Electronic Transaction Micro-payment Smart card
CLC: TP393.08
Type: Master's thesis
Year: 2009
Downloads: 58
Quote: 2
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Abstract


Electronic payment cryptography is an important application in the field of business. Electronic payment protocol as a key technology of e-commerce in recent years has been extensive research and application. Familiar, secure electronic payment protocol must be to achieve strong authentication of identity, and this certification can only rely on asymmetric cryptography (public key technology) can be achieved. In the ultra-large-scale, real strong authentication of any two endpoints must manage a large number of user public key. Public key management scheme to meet this requirement, only a PKI, IBC and CPK three options. In fact, most of the previously used electronic payment protocol is designed based on PKI. However, electronic payment sometimes require off-line, and the traditional PKI difficult to do offline to find or verify the public key. Only identity-based public key (IBC) and CPK CPK (Combined Public Key) program in order to meet the requirements. In recent years, there have been a number of electronic payment protocol is based on the IBC design. CPK program with our own intellectual property, regardless of its safety analysis, or the relative lack of research and application of electronic payment protocol based on CPK. Fund to the information security industry base in Guangdong Province, to carry out a security analysis and improvement of CPK program CPK-based electronic payment protocol, and on this basis, a number of studies. The main work is divided into the following sections: 1. Introduce basic CPK programs and free private key factor CPK program, and then analyzed the security of the scheme, noting that its security vulnerabilities, and to make improvements. Improved program to cover all security vulnerabilities found in this paper, which has a higher security. (2) describes the SET protocol, analyze its strengths and weaknesses, and then a number of improvements and analysis based on CPK improved protocol is more secure, simple, efficient. The requirements of the project, designed a micro-payment electronic payment systems, system architecture and subsystem module structure, design online and off-line micro-payment protocol, and the performance of the agreement into the . The innovation of this paper is pointed out that The CPK programs with free private key factor in vulnerability and improve analysis, given improved SET protocol based on CPK, CPK-based electronic payment protocol is designed and formal analysis of its security.

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