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融合用户特征的图注意力微博谣言检测模型

中文信息学报 2024年第8期38卷 140-146页

作者：杨帆李邵梅解放军战略支援部队信息工程大学河南郑州450001

随着网络和通信技术的发展,谣言借助微博等平台可快速扩散,形成病毒式传播,给国家安全和社会稳定造成严重的安全隐患。为了提高谣言自动检测的准确率,对基于图注意力网络的全局-局部注意力编码谣言检测模型进行了改进。首先,引入用户属... 详细信息

随着网络和通信技术的发展,谣言借助微博等平台可快速扩散,形成病毒式传播,给国家安全和社会稳定造成严重的安全隐患。为了提高谣言自动检测的准确率,对基于图注意力网络的全局-局部注意力编码谣言检测模型进行了改进。首先,引入用户属性信息对微博文本内容特征和传播结构特征进行补充,得到更高阶特征;其次,改进图注意力机制以得到更健壮的节点聚合特征,为判决是否为谣言提供更准确的依据。在微博谣言数据集上的实验结果表明,相对于已有算法,该文提出的检测模型具有更高的检测准确率。

关键词：谣言检测图注意力机制用户属性信息传播结构信息

CON-MVX:一种基于容器技术的多变体执行系统

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信息安全学报 2024年第2期9卷 47-58页

作者：刘子敬张铮席睿成朱鹏喆邬江兴数字工程与先进计算国家重点实验室郑州450001 国家数字交换系统工程技术研究中心郑州450002

多变体执行是一种网络安全防御技术,其利用软件多样性生成等价异构的执行体,将程序输入分发至多个执行体并行执行,通过监控和比较执行体的状态来达到攻击检测的目的。相较于传统的补丁式被动防御技术,多变体执行不依赖于具体的攻击威胁... 详细信息

多变体执行是一种网络安全防御技术,其利用软件多样性生成等价异构的执行体,将程序输入分发至多个执行体并行执行,通过监控和比较执行体的状态来达到攻击检测的目的。相较于传统的补丁式被动防御技术,多变体执行不依赖于具体的攻击威胁特征进行分析,而是通过构建系统的内生安全能力来对大多数已知、甚至未知的漏洞做出有效防御。近年来,多变体执行技术在不断改进和完善,但是误报问题是制约其发展的主要因素。本文针对多变体执行产生误报的原因进行了详细分析,并在此基础上提出利用容器技术实现多变体执行系统在解决误报问题上的优势。为提升多变体执行技术的可用性,本文设计并实现了一种基于容器技术的多变体执行系统CON-MVX,有效解决传统多变体执行系统的误报问题。CON-MVX利用多个经过运行时随机化技术构建的异构容器作为执行体,使用可重构的模块化组件和独立的容器管理工具对容器执行体进行编排管理,建立进程间监控器CGMon,在内核层级实现对多个执行体的输入同步和输出裁决。同时,为满足与客户端良好交互性,建立中继端口策略,保证系统运行状态的正常反馈。实验结果表明, CON-MVX在保证安全能力的前提下,能有效降低多变体执行系统的误报率,在双冗余度执行条件下使用SPEC CPU 2006测试集测试时,系统带来的平均额外性能损耗不超过15%。

关键词：多变体执行容器技术软件漏洞安全能力

A Survey: FPGA-Based Dynamic Scheduling of Hardware Tasks

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Chinese Journal of Electronics 2021年第6期30卷 991-1007页

作者： LI Tianyang ZHANG Fan GUO Wei SUN Mingqian CHEN Li PLA Strategic Support Force Information Engineering University National Digital Switching System Engineering and Technological R&D Center Southeast University

To meet the increasing computing needs of various application fields, Field programmable gate array(FPGA) has been widely deployed. In FPGA-based processing, hardware tasks can be better accelerated by allocating appropriate computing resources. Therefore,FPGA-based hardware task scheduling has become one of the mainstream research directions in academia and industry. However, the optimization objectives of existing FPGA-based hardware task scheduling methods are relatively scattered. In this regard, this paper summarizes the research status of hardware task dynamic scheduling from the three essential elements of FPGA processing: time, resources, and power *** paper analyzes, sorts out, categorizes the ideas and implementations of various scheduling methods and analyzes and evaluates optimization effects of various scheduling methods from multiple dimensions. Then, the shortcomings of the existing methods are summarized and some practical applications are introduced. Finally, the research direction of task scheduling based on FPGA is prospected and summarized.

关键词： Logic circuits Optimisation techniques Logic and switching circuits Optimisation techniques Field programmable gate array Task scheduling Optimization Resource management Dynamic reconfiguration

Differential Fault Attack on the Stream Cipher LIZARD

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Chinese Journal of Electronics 2021年第3期30卷 534-541页

作者： MA Zhen TIAN Tian QI Wenfeng National Digital Switching System Engineering Technological Research Center

In this paper, we try to give a security evaluation of LIZARD stream cipher in regard to fault attacks, which, to the best of our knowledge, is the first fault analysis on LIZARD. We design a differential engine of LIZARD to track the differential trail of the keystreams. It is shown that the distributions of the keystream differences are heavily biased. Utilizing this characteristic, we propose an improved method to identify the fault location for LIZARD whose success probability approaches 1. Then we use the fault-free keystream and faulty keystreams to generate system of equations in internal state variables and solve it by SAT solver. The result shows that with 100 keystream bits, only 6 different faults are needed to recover the internal state. Finally,the comparison between LIZARD and Grain v1 shows that LIZARD is more resistable than Grain v1 in regard to fault attacks.

关键词： Cryptography Data security Other topics in statistics Other topics in statistics Cryptanalysis stream cipher fault attack SAT solver LIZARD

Development paradigms of cyberspace endogenous safety and security

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Science China(Information Sciences) 2022年第5期65卷 264-266页

作者： Jiangxing WU National Digital Switching System Engineering & Technological R&D Center

Scientifc interpretation of paradigm. The concept and theory of paradigm were first proposed by Thomas Kuhn, a famous American science philosopher, and were systematically described in his book “The Structure of Scie... 详细信息

关键词： cyberspace endogenous security ubiquitous problem unknown unknown security threats relatively-correct axiom dynamic heterogeneous redundancy architecture cyberspace endogenous safety and security development paradigm

Cyberspace Endogenous Safety and Security

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Engineering 2022年第8期8卷 179-185页

作者： Jiangxing Wu National Digital Switching System Engineering&Technological R&D Center Zhengzhou 450002China

Uncertain security threats caused by vulnerabilities and backdoors are the most serious and difficult problem in *** paper analyzes the philosophical and technical causes of the existence of so-called"dark functions"such as system vulnerabilities and backdoors,and points out that endogenous security problems cannot be completely eliminated at the theoretical and engineering levels;rather,it is necessary to develop or utilize the endogenous security functions of the system architecture *** addition,this paper gives a definition for and lists the main technical characteristics of endogenous safety and security in cyberspace,introduces endogenous safety and security mechanisms and characteristics based on dynamic heterogeneous redundancy(DHR)architecture,and describes the theoretical implications of a coding channel based on DHR.

关键词： Cyberspace endogenous security problem Uncertain threat Cyberspace endogenous safety and security Relative right axiom Dynamic heterogeneous redundant architecture

SDN边缘交换机发起的数据窃取攻击及检测方法研究

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信息工程大学学报 2024年第3期25卷 307-314页

作者：赵扬伊鹏张震胡涛刘少勋信息工程大学河南郑州450001 网络通信与安全紫金山实验室江苏南京210000

软件定义网络(Soft Defined Network,SDN)交换机作为数据转发与策略执行的设备,恶意攻击者通过侵蚀SDN交换机对网络进行隐秘而致命的攻击,严重影响用户的端到端通信质量。首先提出了一种边缘交换机被攻击者劫持后的数据窃取攻击过程,可... 详细信息

软件定义网络(Soft Defined Network,SDN)交换机作为数据转发与策略执行的设备,恶意攻击者通过侵蚀SDN交换机对网络进行隐秘而致命的攻击,严重影响用户的端到端通信质量。首先提出了一种边缘交换机被攻击者劫持后的数据窃取攻击过程,可以逃避网络范围内的异常检测,并证明了这种攻击的隐蔽性。为了抵御此种攻击,提出了一种流信息一致性检测方法,将主机信息纳入一致性检测中,并基于Ryu控制器在mininet平台上进行实验。实验结果表明,防御方法在抵御边缘交换机攻击的同时不会带来过多的负载增加。

关键词：软件定义网络数据平面安全受损交换机检测

Improving Centralized Path Calculation Based on Graph Compression

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China Communications 2018年第6期15卷 120-124页

作者： Zhenglian Li Lixin Ji Ruiyang Huang Shuxin Liu National Digital Switching System Engineering&Technological R&D Center ZhengzhouChina

Shortest-path calculation on weighted graphs are an essential operation in computer networks. The performance of such algorithms has become a critical challenge in emerging software-defined networks(SDN),since SDN controllers need to centralizedly perform a shortest-path query for every flow,usually on large-scale network. Unfortunately,one of the challenges is that current algorithms will become incalculable as the network size increases. Therefore, inspired by the compression graph in the field of compute visualization,we propose an efficient shortest path algorithm by compressing the original big network graph into a small one, but the important graph properties used to calculate path is reserved. We implement a centralized version of our approach in SDN-enabled network,and the evaluations validate the improvement compared with the well-known algorithms.

关键词： graph representation path compression shortest path

Introduction to Wireless Endogenous Security and Safety:Problems, Attributes, Structures and Functions

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China Communications 2021年第9期18卷 88-99页

作者： Liang Jin Xiaoyan Hu Yangming Lou Zhou Zhong Xiaoli Sun Huiming Wang Jiangxing Wu PLA Strategic Support Force Information Engineering University Zhengzhou 450002China Xi’an Jiaotong University Xi’an710049China Purple Mountain Laboratories:Networking Communications and SecurityNanjing 211111China

The information security and functional safety are fundamental issues of wireless communications *** endogenous security principle based on Dynamic Heterogeneous Redundancy provides a direction for the development of wireless communication security and safety *** paper introduces the concept of wireless endogenous security from the following four ***,we sorts out the endogenous security problems faced by the current wireless communications system,and then analyzes the endogenous security and safety attributes of the wireless *** that,the endogenous security and safety structure of the wireless communications system is given,and finally the applications of the existing wireless communication endogenous security and safety functions are listed.

关键词： wireless communication endogenous security information security functional safety