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Load Balancing Algorithm of Controller Based on SDN Architecture Under Machine Learning

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Journal of Systems Science and information 2020年第6期11卷 578-588页

作者： Siyuan LIANG Wenli JIANG Fangli ZHAO Feng ZHAO shaanxi key laboratory of information communication network and security Xi’an University of Posts&TelecommunicationsXi’an 710121China

With the rapid development of cloud computing and other related services,higher requirements are put forward for network transmission and *** to the inherent distributed characteristics of traditional networks,machine learning technology is diffcult to be applied and deployed in network *** emergence of SDN technology provides new opportunities and challenges for the application of machine learning technology in network management.A load balancing algorithm of Internet of things controller based on data center SDN architecture is *** Bayesian network is used to predict the degree of load congestion,combining reinforcement learning algorithm to make optimal action decision,self-adjusting parameter weight to adjust the controller load congestion,to achieve load balance,improve network security and stability.

关键词： software defined networks(SDN) Bayesian network reinforcement learning

Research on Loophole with Second Distribution of Real Value Detectors

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Chinese Journal of Electronics 2016年第6期25卷 1141-1150页

作者： WANG Tianbo ZHANG Fengbin XIA Chunhe Beijing key laboratory of network Technology Beihang University network and information security laboratory Harbin University of Science and Technology

Traditional anomaly detection algorithm has improved to some degree the mechanism of negative selection. There still remain many problems such as the randomness of detector generation, incompleteness of selfset and the generalization ability of detectors, which would cause a lot of loopholes in non-self space. A heuristic algorithm based on the second distribution of real value detectors for the remains of loopholes of the non-self space in the first distribution and the mutation regions of self space is proposed. The algorithm can distribute real value detectors through omission data based on the methods of partition and movement. A method is proposed to solve the problem on how to get the optimal solutions to the parameters related in the algorithm. Theoretical analysis and experimental results prove the universality and effectiveness of the method. It is found that our algorithm can effectively avoid the generation of loopholes and thus reduce the omission rate of detector sets.

关键词： Artificial immune Anomaly detection Loophole Parameter estimation Detector

Using Reduced Graphene Oxide to Generate Q-Switched Pulses in Er-Doped Fiber Laser

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Chinese Physics Letters 2018年第11期35卷 32-34页

作者： Lu Li Rui-Dong Lv Si-Cong Liu Zhen-Dong Chen Jiang Wang Yong-Gang Wang Wei Ren School of Science Xi＇an University of Posts and TelecommunicationsXi＇an 710121 School of Physics and information Technology Shaanxi Normal UniversityXi＇an 710119 shaanxi key laboratory of information communication network and security Xi＇an University of Posts and TelecommunicationsXi＇an 710121

Using the reduced graphene oxide（rGO） as a saturable absorber（SA） in an Er-doped fiber（EDF） laser cavity,we obtain the Q-switching operation. The rGO SA is prepared by depositing the GO on fluorine mica（FM） using the thermal reduction method. The modulation depth of rGO/FM is measured to be 3.2%. By incorporating the rGO/FM film into the EDF laser cavity, we obtain stable Q-switched pulses. The shortest pulse duration is3.53 μs, and the maximum single pulse energy is 48.19 nJ. The long-term stability of working is well *** experimental results show that the rGO possesses potential photonics applications.

关键词： EDF GO Using Reduced Graphene Oxide to Generate Q-Switched Pulses in Er-Doped Fiber Laser SA

Modulated symbol-based one-time pad secure transmission scheme using physical layer keys

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Science China(information Sciences) 2024年第1期67卷 221-239页

作者： Xiaoyan HU Zheng WAN Kaizhi HUANG Liang JIN Mengyao YAN Yajun CHEN Jinmei YANG information Engineering University Purple Mountain Laboratories for network and communication security

This paper proposes a novel modulated symbols-based one-time pad(SOTP) secure transmission scheme using physical layer *** classical physical layer key generation and exclusive OR(XOR)encryption in the discrete binary space,we design a framework for modulated symbols-based one-time pad(OTP) encryption,where the cryptographic primitive and mathematical model of SOTP is given to build a practical cryptographic *** with existing physical layer encryption(PLE) schemes,we provide rigorous proof that the framework can meet perfect secrecy and correctness *** addition,we provide a specific scheme of physical layer OTP secure transmission for quadrature amplitude modulation(QAM) and phase-shift keying(PSK) symbols based on physical layer *** scheme realizes the unification of bit encryption and symbol encryption,which can adaptively select the quantization level according to the signal-to-noise ratio(SNR) to minimize the symbol error rate(SER).Further,we analyze the performance quantitatively and derive the closed-form expressions of SER,which indicates that the proposed scheme has a lower ***,simulation results verify that the proposed symbol-wise OTP secure transmission scheme can achieve perfect secrecy and high reliability.

关键词： physical layer security one-time pad wireless channel physical layer encryption perfect secrecy

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Novel Video Steganography Algorithm Based on Secret Sharing and Error-Correcting Code for H.264/AVC

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Tsinghua Science and Technology 2017年第2期22卷 198-209页

作者： Yingnan Zhang Minqing Zhang Xiaoyuan Yang Duntao Guo Longfei Liu key laboratory of network & information security of PAP Engineering College of PAPXi’an 710086China

In this paper, we analyze the video steganography technique, which is used to ensure national security and the confidentiality of the information of governmental agencies and enterprises. Videos may be used to transmit secrets and conduct covert communication. As such, we present an algorithm based on a secret sharing scheme and an Error-Correcting Code（ECC）, which combines Grey Relational Analysis（GRA） with a partition mode in video compression standard H.264/AVC. First, we process secret information by secret sharing, and then use an ECC to process the obtained information. Moreover, we choose the Discrete Cosine Transform（DCT） blocks using GRA, and then use rules to hide the pretreated information in DCT coefficients of the video frames. Experimental results indicate that our algorithm has good invisibility, better robustness, good anti-steganalysis ability, and little influence on the bit rate of the video carrier. In addition, the bit error rate is low after attacks such as noise, filtering,or frame loss in the simulation environment.

关键词： steganography video secret sharing error-correcting code robustness grey relational analysis partition mode

An Efficient and Practical Public key Cryptosystem with CCA-security on Standard Model

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Tsinghua Science and Technology 2014年第5期19卷 486-495页

作者： Zhen Liu Xiaoyuan Yang Weidong Zhong Yiliang Han Department of network and information security key laboratory Engineering University of the Armed PoliceForce

Chosen Ciphertext Attack （CCA） security on the standard model is widely accepted as the standard security notion for the public key cryptosystem. The existing CCA-secure public key cryptosystems on the standard model are expensive in terms of efficiency and practicality. In this paper, an efficient and practical public key cryptosystem is presented over the group of signed quadratic residues. It is provably secure against CCA on the standard model. Furthermore, public verifiability for this scheme is also realized in the way that projects the verification privacy key into public key on trapdoor pretending. It will be useful to devise efficient CCA-secure threshold and proxy re-encryption schemes on the standard model.

关键词： public key cryptosystem standard model Chosen Ciphertext Attack (CCA)-security public verifiability

TAKAP: A Lightweight Three-Party Authenticated key Agreement Protocol with User Anonymity

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Chinese Journal of Electronics 2021年第4期30卷 686-696页

作者： QIAO Hui DONG Xuewen SHEN Yulong LIU Haozhe YANG Lingxiao School of Computer Science and Technology Xidian University shaanxi key laboratory of network and System security Xidian University

The three-party authenticated key agreement protocol is a significant cryptographic mechanism for secure communication, which encourages two entities to authenticate each other and generate a shared session key with the assistance of a trusted party(remote server) via a public channel. Recently, Wang et al. put forward a three-party key agreement protocol with user anonymity and alleged that their protocol is able to resist all kinds of attacks and provide multifarious security features in Computer Engineering & Science, No.3, ***, we show that Wang et al.’s protocol is vulnerable to the password guessing attack and fails to satisfy user anonymity and perfect secrecy. To solve the aforementioned problems, a lightweight chaotic mapbased Three-party authenticated key agreement protocol(short for TAKAP) is proposed, which not only could provide privacy protection but also resist a wide variety of security attacks. Furthermore, it is formally proved under Burrows-Abadi-Needham(BAN) logic. Simultaneously,the performance analysis in this paper demonstrates that the proposed TAKAP protocol is more secure and efficient compared with other relevant protocols.

关键词： Three-party Authenticated key agreement Chaotic map Anonymity security attacks

Passive Beamforming Design for Intelligent Reflecting Surface Assisted MIMO Systems

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China communications 2021年第3期18卷 18-28页

作者： Chenghao Feng Wenqian Shen Xinyu Gao Jianping An School of information and Electronics Beijing Institute of TechnologyBeijing 100081China shaanxi key laboratory of information communication network and security Xian University of Posts and TelecommunicationsXianShaanxi 710121China Huawei Technologies Co.Ltd. Beijing 100085China

Intelligent reflecting surfaces(IRSs)constitute passive devices,which are capable of adjusting the phase shifts of their reflected signals,and hence they are suitable for passive *** this paper,we conceive their design with the active beamforming action of multiple-input multipleoutput(MIMO)systems used at the access points(APs)for improving the beamforming gain,where both the APs and users are equipped with multiple ***,we decouple the optimization problem and design the active beamforming for a given IRS *** we transform the optimization problem of the IRS-based passive beamforming design into a tractable non-convex quadratically constrained quadratic program(QCQP).For solving the transformed problem,we give an approximate solution based on the technique of widely used semidefinite relaxation(SDR).We also propose a low-complexity iterative *** further prove that it can converge to a locally optimal ***,considering the practical scenario of discrete phase shifts at the IRS,we give the quantization design for IRS elements on basis of the two *** simulation results demonstrate the superiority of the proposed solutions over the relevant benchmarks.

关键词： intelligent reflecting surface MIMO systems passive beamforming

Reconstruction methodology for rational secret sharing based on mechanism design

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Science China(information Sciences) 2017年第8期60卷 240-242页

作者： Hai LIU Xinghua LI Jianfeng MA Mengfan XU Jingjing GUO State key laboratory of Integrated Service networks Xidian University shaanxi key laboratory of network and System security Xidian University School of Cyber Engineering Xidian University

Rational secret sharing[1]is the intersection of game theory[2]and traditional secret sharing[3].In rational secret sharing,the players are selfish and always behave in accordance with profit *** this implies,primarily,is that rational players prefer obtaining the secret rather than not obtaining it and,secondarily,that players prefer as few other players as possible obtaining the *** by selfishness,rational players either keep silent or send incorrect shares during the reconstruction phase,thereby the fairness

关键词： GRS in is Reconstruction methodology for rational secret sharing based on mechanism design for Pi that of on