Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-12-13 Cooperative journals: 《计算机应用研究》
Abstract： Attribute-based encryption algorithm has the characteristics as flexibility, fine-grained and high security. This paper introduces an improved attribute-based outsourced encryption algorithm based on secure data access control attribute-based encryption, to reduce the resources consumed by computation, which outsources the complex bilinear pairings in the encryption computing to the fog node to reduce the user's computation overhead. By simplifying the system parameters, we reduce the random number generated by attribute authority for every attribute to shorten the length of ciphertext and the key, as well as the storage cost of the system. And the security proof of the scheme is given in the last part of this paper.
Subjects: Astronomy submitted time 2018-12-04 Cooperative journals: 《天文研究与技术》
Abstract：观测控制系统(Observation Control System，OCS)是当前的一个研究热点，底层通信是OCS架构中重要的一个环节。但传统的OCS中一般采用裸套接技术实现，缺少统一的传输控制机制，在密集数据通信时经常存在延迟影响实时控制的需要; 同时缺少广播与组播机制，限制了OCS系统的设计。本文针对OCS的要求，系统研究分析了基于ZeroMQ不同通信模型及所对应的天文控制模式，对不同的通信控制架构可用性进行了分析。在此基础上通过实验对相应的通信模型进行了测试，验证其在天文仪器分布控制中的可用性。测试结果进一步说明ZeroMQ构建OCS的底层通信架构是可行的，能够满足OCS对设备的各种控制需求。
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