The Experts below are selected from a list of 1989 Experts worldwide ranked by ideXlab platform
Xiuzhen Cheng - One of the best experts on this subject based on the ideXlab platform.
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NormaChain: A Blockchain-Based Normalized Autonomous Transaction Settlement System for IoT-Based E-Commerce
IEEE Internet of Things Journal, 2019Co-Authors: Chunchi Liu, Yinhao Xiao, Vishesh Javangula, Shengling Wang, Xiuzhen ChengAbstract:Internet of Things (IoT)-based E-commerce is a new business model that relies on Autonomous Transaction management on IoT-devices. The management system toward IoT-based E-commerce demands autonomy, lightweight, and legitimacy. As blockchain is an innovative technology that is competent in governing the decentralized network, we adopt it to design the Autonomous Transaction management system on IoT E-commerce. However, current blockchain solutions, most namely cryptocurrencies, have fatal drawbacks of nonsupervisability and huge computational overhead, and hence cannot be directly applied on IoT-based E-commerce. In this paper, we propose NormaChain, a blockchain-based normalized Autonomous Transaction settlement system for IoT-based E-commerce. By designing a special three-layer sharding blockchain network, we can significantly increase Transaction efficiency and system scalability. Additionally, by designing an innovative decentralized public key searchable encryption scheme (decentralized public key encryption with keyword search (PEKS) scheme), we can uncover illegal and criminal Transactions and achieve crime traceability. Our new decentralized PEKS scheme cryptographically eliminates the dependence of a trusted central authority in the original PEKS scheme and instead expands it to a fully decentralized governance, which distributes the supervision power equally among all parties. More importantly, by proving NormaChain is secure against chosen ciphertext attacks and against the stealing of the secret key, we show that NormaChain prevents a legitimate user's privacy from being violated by banks, supervisors or malicious adversaries. Finally, we deliver the NormaChain system with design details and full implementations. Experiments show that the average Transaction-per-second on IoT devices is around 113, and the supervision accuracy is 100% when proper target illegal keywords are provided.
Avi Silberschatz - One of the best experts on this subject based on the ideXlab platform.
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Autonomous Transaction managers in responsive computing
Responsive Computer Systems, 1995Co-Authors: Nandit Soparkar, Henry F Korth, Avi SilberschatzAbstract:Transaction systems are designed to facilitate the design of applications in distributed, failure-prone environments. Typically, mechanisms are provided as part of the Transaction management system to relieve the application designers of managing concurrent executions and unexpected failures. Additionally, providing adequate real-time responsiveness in such systems necessitates the distributed Autonomous management of the Transaction executions — due to the reason that a centralized approach would be inefficient and highly sensitive to the failure of a single site. Ensuring the logical correctness of concurrent Transaction executions in terms of maintaining serializability in an environment consisting of several Autonomous sites is a current research effort. While several schemes have been proposed that are sufficient to ensure serializability, the particular conditions necessary have not been made precise. We explore this question in an attempt to delineate those classes of concurrency control protocols that can be used at each local site in the context of Autonomous Transaction managers. Our research provides the characterization and techniques for integrating the Transaction schedules arising from the Autonomous sites in a manner similar to the approach used for centralized concurrency control.
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Serializability Among Autonomous Transaction Managers
1992Co-Authors: Nandit Soparkar, Henry F Korth, Avi SilberschatzAbstract:Ensuring the serializability of Transaction executions in an environment consisting of several Autonomous sites is a current research effort. While several ad hoc schemes have been proposed that are sufficient to ensure serializability, it is not clear what conditions are necessary. We explore this question in an attempt to delineate those classes of concurrency control protocols that exist at local sites that may be integrated. Our research indicates the existing or future protocols that are amenable to integration, and also suggests the means to do so. We provide a characterization for integrating the Transaction schedules from Autonomous sites in a manner similar to that used in centralized concurrency control.
Chunchi Liu - One of the best experts on this subject based on the ideXlab platform.
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NormaChain: A Blockchain-Based Normalized Autonomous Transaction Settlement System for IoT-Based E-Commerce
IEEE Internet of Things Journal, 2019Co-Authors: Chunchi Liu, Yinhao Xiao, Vishesh Javangula, Shengling Wang, Xiuzhen ChengAbstract:Internet of Things (IoT)-based E-commerce is a new business model that relies on Autonomous Transaction management on IoT-devices. The management system toward IoT-based E-commerce demands autonomy, lightweight, and legitimacy. As blockchain is an innovative technology that is competent in governing the decentralized network, we adopt it to design the Autonomous Transaction management system on IoT E-commerce. However, current blockchain solutions, most namely cryptocurrencies, have fatal drawbacks of nonsupervisability and huge computational overhead, and hence cannot be directly applied on IoT-based E-commerce. In this paper, we propose NormaChain, a blockchain-based normalized Autonomous Transaction settlement system for IoT-based E-commerce. By designing a special three-layer sharding blockchain network, we can significantly increase Transaction efficiency and system scalability. Additionally, by designing an innovative decentralized public key searchable encryption scheme (decentralized public key encryption with keyword search (PEKS) scheme), we can uncover illegal and criminal Transactions and achieve crime traceability. Our new decentralized PEKS scheme cryptographically eliminates the dependence of a trusted central authority in the original PEKS scheme and instead expands it to a fully decentralized governance, which distributes the supervision power equally among all parties. More importantly, by proving NormaChain is secure against chosen ciphertext attacks and against the stealing of the secret key, we show that NormaChain prevents a legitimate user's privacy from being violated by banks, supervisors or malicious adversaries. Finally, we deliver the NormaChain system with design details and full implementations. Experiments show that the average Transaction-per-second on IoT devices is around 113, and the supervision accuracy is 100% when proper target illegal keywords are provided.
A Leff - One of the best experts on this subject based on the ideXlab platform.
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Autonomous Transaction execution with epsilon serializability
International Workshop on Research Issues in Data Engineering, 1992Co-Authors: A LeffAbstract:The authors study the feasibility of Autonomous Transaction execution in systems with asynchronous Transaction processing based on epsilon serializability (ESR). The abstract correctness criteria defined by ESR are implemented by techniques such as asynchronous divergence control and asynchronous consistency restoration. Concrete application examples in a distributed environment, such as banking, illustrate the advantages of using ESR to support execution autonomy. The ability for asynchronous Transaction processing also supports efficient concurrent Transaction and query processing. >
Shengling Wang - One of the best experts on this subject based on the ideXlab platform.
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NormaChain: A Blockchain-Based Normalized Autonomous Transaction Settlement System for IoT-Based E-Commerce
IEEE Internet of Things Journal, 2019Co-Authors: Chunchi Liu, Yinhao Xiao, Vishesh Javangula, Shengling Wang, Xiuzhen ChengAbstract:Internet of Things (IoT)-based E-commerce is a new business model that relies on Autonomous Transaction management on IoT-devices. The management system toward IoT-based E-commerce demands autonomy, lightweight, and legitimacy. As blockchain is an innovative technology that is competent in governing the decentralized network, we adopt it to design the Autonomous Transaction management system on IoT E-commerce. However, current blockchain solutions, most namely cryptocurrencies, have fatal drawbacks of nonsupervisability and huge computational overhead, and hence cannot be directly applied on IoT-based E-commerce. In this paper, we propose NormaChain, a blockchain-based normalized Autonomous Transaction settlement system for IoT-based E-commerce. By designing a special three-layer sharding blockchain network, we can significantly increase Transaction efficiency and system scalability. Additionally, by designing an innovative decentralized public key searchable encryption scheme (decentralized public key encryption with keyword search (PEKS) scheme), we can uncover illegal and criminal Transactions and achieve crime traceability. Our new decentralized PEKS scheme cryptographically eliminates the dependence of a trusted central authority in the original PEKS scheme and instead expands it to a fully decentralized governance, which distributes the supervision power equally among all parties. More importantly, by proving NormaChain is secure against chosen ciphertext attacks and against the stealing of the secret key, we show that NormaChain prevents a legitimate user's privacy from being violated by banks, supervisors or malicious adversaries. Finally, we deliver the NormaChain system with design details and full implementations. Experiments show that the average Transaction-per-second on IoT devices is around 113, and the supervision accuracy is 100% when proper target illegal keywords are provided.
