Titlebook: Blockchain Technology and Application; Third CCF China Bloc Ke Xu,Jianming Zhu,Zeguang Lu Conference proceedings 2021 Springer Nature Singa

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A Group-Based Optimized Practical Byzantine Fault Tolerance Consensus Algorithm,ithm existed in consortium blockchain, this paper presents a group-based optimized Practical Byzantine Fault Tolerance (GPBFT) consensus algorithm, which is a multi-stage algorithm. First, we propose a comprehensive reputation evaluation model to judge the credibility of a node from two aspects of t

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Storage Optimization for Certificates in Blockchain Based PKI System,tradition PKI, such as single point of failure. Certificates are recorded into the decentralized blockchain in many of the researches. With the increased number of certificates, the blockchain based PKI system will occupy a considerable amount of storage space. In this paper, the framework of blockc

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Blockchain-Based Access Control Mechanism in Electronic Evidence,nding storage access control protocol. In this scheme, multi-entity cooperation is allowed to store evidence, and a zero-knowledge proof protocol is applied to achieve access control and data sharing. Through the security and experimental analysis, it can be proved that the scheme satisfies security

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Multi-core and SIMD Architecture Based Implementation on SHA-256 of Blockchain,states, then it interleaves the execution of vectorized states from those running instances which can make full use of the data parallelism in SIMD. On the other hand, in the situation where we hash several messages simultaneously, we propose the modified SHA-256 which employs SIMD instructions and

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,A Case Study for Blockchain in OTC: “BATN”: A Prototype for Bid and Ask Trading Network,ansaction per second on a decentralized network can meet trading volume in reality. This paper intends to improve business effectiveness for much larger fields through the working prototype and discusses the potential of blockchain for finance IT.

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