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This paper discusses the application of P2P technology in the distribution system . First, the distribution system concepts, principles , key technology analysis and presentation, pointed out that the problems of the distribution system ; then introduces the principle and application of P2P technology , the characteristics of P2P and network architecture are discussed in detail , which made the the technical problems. Then analyzes the PCDN the principle and architecture , but also through practical examples, analysis PCDN advantages , but also pointed out that the content integrity , availability, and security issues . DHT algorithm by analyzing P2P technology to derive the new node search algorithm, user authentication algorithms and content integrity, availability checksum algorithm . Then combined with centralized P2P network architecture , analysis , elaborated the improved centralized PCDN and distributed PCDN architecture and principles as well as part of the process algorithm , Finally, based on the the PCDN improved technical architecture key algorithm design and implementation code.
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