Intellectual property transaction sharing scheme based on blockchain and proxy re-encryptionGuo, ZhiHao; Su, YanPeng; Hu, XiaoMing
doi: 10.1117/12.2678856pmid: N/A
In view of the current problems of long property rights validation period, transaction difficulties and data sharing, we propose a blockchain-based Intellectual property transaction sharing scheme by combining the characteristics of open and transparent, tamper-evident, traceable and decentralized data of blockchain with the proxy re-encryption technology and off-chain storage mode. We also improve the PBFT master selection strategy and design the VCS-PBFT consensus mechanism, which effectively reduces the network bandwidth consumption and improves the consensus efficiency. By comparing and analyzing with other schemes, it shows that this scheme has certain advantages and feasibility in function.
The comparison model of satellite-earth time based on special relativity and its accuracy analysisGuo, Yi; Zhong, Hongen; He, Yufeng
doi: 10.1117/12.2679114pmid: N/A
The functions of navigation satellite include positioning and timing, which are based on high-precision time comparison. Most of the existing studies ignore the relativistic effect of the satellite-earth time comparison, or study some delay based on general relativity alone. There is no complete calculation model of the satellite-earth time comparison based on special relativity. In this paper, the satellite-earth time alignment model based on special relativity is derived and the space-time diagram of special relativity is established. In order to improve the accuracy of the satellite-earth time alignment, the uplink Sagnac effect delay and the special relativity effect delay are derived based on the relative motion of the satellite-earth. By calibrating the model of the satellite-earth alignment of the special relativity theory with the above two dealy terms, the alignment accuracy is improved. The experimental results show that the satellite-earth time comparison model derived in this paper is correct. After correction and optimization of the uplink Sagnac effect delay and special relativity delay, the maximum accuracy improvement and the average accuracy improvement are 0.022% and 0.014% to GPS. The highest accuracy improvement was 0.079%, and the average improvement was 0.012% to GLONASS . It can be seen that the accuracy of the satellite-earth time comparison model under the relativity theory is higher than that of the un-optimized satellite-earth time comparison model.
Ultra reliable low-latency communications service resource allocation method of 5G networkXie, Huan; Ma, Mei; Zhang, Qiuming; Zhang, Yue; Li, Xing; Fan, Xueting; Wang, Kai
doi: 10.1117/12.2679096pmid: N/A
By studying bandwidth allocation and puncture schemes, this paper intends to make a trade-off between QoS requirements of different services. For eMBB scheduling problem, we used proportional fairness algorithm (PF) as its resource scheduling algorithm, and then asked URLLC to perform puncture on the basis of eMBB scheduling results. Considering the case of URLLC overload, we set a rate loss threshold for eMBB users. When the eMBB rate loss reaches the threshold, the URLLC users in the current time slot will delay the transmission to the next mini-slot. In this paper, we propose a bandwidth allocation problem whose optimization objective is to minimize eMBB rate loss and URLLC transmission delay, and use matching theory to solve this problem.
MacWilliams identities for linear codes over the ring Z4+uZ4 on the Hermitian inner productWu, Huazhang; Shen, Xiaoting; Wang, Hui
doi: 10.1117/12.2678862pmid: N/A
Coding theory has so many important applications in cryptogram, communication technology and network security, etc. The MacWilliams type of identities for linear codes over rings are very important research object, becauce they are related to the computation of decoding error probability and error probability of undetectable codes. In this paper, we study linear codes over the ring Z4 + uZ4 with u2 = 0 . The Hermitian inner product over such ring is defined. New definitions for the complete weight enumerator, the symmetrical weight enumerator, the Lee weight enumerator and the Hamming weight enumerator of linear codes over the ring Z4 + uZ4 for the Hermitian inner product are given. The MacWilliams identities for these weight enumerators are studied.
Research on trusted Modbus/TCP protocol of SCADA system based on digital envelope technologyGuo, Chenxue; Cui, Yuanbo; Wang, Chao
doi: 10.1117/12.2679065pmid: N/A
Considering the issues of lack of integrity, authentication and confidentiality of Modbus/TCP protocol broadly utilized in SCADA system, this study suggests a trusted Modbus/TCP protocol based on digital envelope technology on the basis of trusted cryptography module (TCM). To the basic Modbus/TCP protocol, the protocol adds identity authentication sub-protocol and communication sub-protocol. Utilizing the SM2, SM3 and SM4 algorithms provided by TCM, the security of sub-protocol communication procedure and communication information is guaranteed by digital envelope technology and hash calculation. The security of the sub-protocol is verified by the SPAN tool, as well as the time overhead determined by the sub-protocol is tested. Experiments illustrates that the proposed trusted Modbus/TCP protocol can meet the high real-time prerequisites of industrial control systems and various business performance criteria while ensuring integrity, authentication and confidentiality.
Virus propagation model based on log feature detectionQian, Yungang; Ren, Jianguo
doi: 10.1117/12.2678852pmid: N/A
Based on the problem that existing antivirus software cannot effectively respond to emerging viruses and lacks real-time detection and effective interception of viruses, a class of detection propagation models based on log feature detection of viruses is established based on the classical susceptible-exposed-infected-immune (SEIR) propagation model with the introduction of containment nodes. The experimental results show that the drop rate of infected nodes of this model is increased by 26.45%, 40.68%, and 54.24% when the detection rate is taken as 0.5, 0.7, and 0.9, respectively, compared with the previous SEIR model. Therefore, the detection propagation model based on the detection of log feature information of viruses can effectively contain and remove the spread of new viruses in the network, and the higher the detection rate, the better the effect.
A consortium blockchain system designed for muti-domain cooperative allianceHu, Shanwen; Zhu, Linkai; Chen, Jian; Cai, Zhiming
doi: 10.1117/12.2679058pmid: N/A
In order to provide Internet services, the Domain Name System (DNS) plays a crucial role. Muti-Domain Cooperative Alliance is proposed to promote DNS globalization and maintain the permanent sustainability of the Internet. Data synchronization transactions in Muti-Domain Cooperative Alliance must ensure mutual trust. Blockchain technology is one of the effective ways to solve the problem. However, mutual trust transactions between blockchains are still problematic in synchronizing data cross-chain. This paper summarizes and analyzes the properties of various cross-chain technology and proposes a cross-chain solution. A cross-chain solution is designed as a main-sub chain mode, with the main chain constructed using the Hyperledger Fabric of semi-centralized attributes. The channel mechanism of Fabric ensures effective mutual trust transactions of cross-chain information transfer in the cross-chain system and improves the efficiency of the cross-chain system. Finally, an experiment evaluated the performance of the cross-chain relay chain by testing its carrying capacity, and the results illustrate that the solution can hold cross-chain information interaction.
Message middleware-based message timing for alerting systemsKe, Qunnan; He, Xianping
doi: 10.1117/12.2678842pmid: N/A
In the context of decoupling and clipping by using message middleware in the network management alerting subsystem, the requirement of the timing of data in distributed systems is difficult to achieve. To address a series of problems caused by message disorderliness in the network management system, the article introduces RocketMQ sequential messages and the solution to message duplication. Firstly, it introduces the message requirements of the network management system, then discusses the advantages of RocketMQ in comparison, and by analyzing its implementation method and principle of sequential messages, it is applied to the alerting system and tested, and the results show that the method can better guarantee the problem of data timing, and finally, it solves the problems of message loss and message duplication that may occur with sequential messages.
Multi-scale residual neural network for image steganalysisXie, Chen; Wu, Xiangjun
doi: 10.1117/12.2678887pmid: N/A
Deep steganalysis networks (DSNs) has made a great progress in detection performance. However, most of the deep image steganalysis networks are not complete end-to-end models. In their approach, traditional hand-crafted features are employed to pre-process the images, which can obtain the high-frequency noise residuals to alleviate the interference of the image content. To avoid relying on domain knowledge of deep learning-based methods, we design an end-to-end deep image steganalysis neural model that combines multi-scale feature extraction and residual fusion modules. Firstly, we use the standard convolution kernels of different sizes to extract the features of different scale receptive fields in the input image. Then, depth-wise convolution is used to independently models the inner-channel correlations of multi-scale features and retains the discriminative statistical characteristics of each channel. The residual fusion technique is introduced to aggregate hierarchical feature and strengthen information representation in the network. Experimental results show that, compared with the existing classical deep image steganalysis networks, the proposed steganalysis scheme has a great improvement in steganalysis error rates.
Research on security system of electric Internet of Things based on depth protectionLian, Chen; Wang, Jian; Xie, Ming
doi: 10.1117/12.2679174pmid: N/A
In recent years, with the vigorous development of new businesses such as smart electricity and power trading in the power industry, the open interconnection capability of smart power grid is becoming stronger, and the number and types of terminal access to electric Internet of Things are also increasing. With the continuous development of Internet of Things technology and business, it also brings new challenges to the security of Internet of Things. As the Internet of Things has a wide range of access points, in the remote transmission of massive terminal data and information, there are bound to be many security problems in the process of cross-regional access authorization on heterogeneous networks. This paper mainly analyzes the status quo and risks faced by the electric Internet of Things, and discusses how to effectively use security technology to protect the electric Internet of Things. A security protection system of electric Internet of Things based on depth protection is proposed to ensure the security of electric Internet of Things.