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      • A Scalable PKI Based on P2P Network

        Zhiwei Gao,Jinsheng Fan,Yufeng Jia,Li Zhang 보안공학연구지원센터 2007 International Journal of Security and Its Applicat Vol.1 No.2

        Public key infrastructure (PKI) is a powerful tool for protecting information. Currently a PKI system shows a trend toward an emerging global PKI which becomes more complicated. The global PKI has to handle an enormous number of queries for cryptographic certificates which attest the authenticity of public keys. So a decentralized organization of the PKI is advantageously. Therefore we developed a specialized Peer-to-Peer-PKI model realizing efficient search and transfer of certificates and trust-recommendations. Our model based on our own rigorous binary tree algorithm and has four advantages. First, there is no any bottleneck problem when establishing a certification path or authenticating. Second, the authentication path is short with two constant logic steps. Third, in our model the entities need to mutual authenticate don’t need to inquire or download the CRL. Fourth, it’s easy to extend and suitable for large-scale network.

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