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Beamforming design for covert broadcast communication with hidden adversary

Science China(Information Sciences) 2024年第6期67卷 384-398页

作者： Weiyu CHEN haiyang ding Shilian WANG Junshan LUO Fengkui GONG College of Electronic Science and Technology National University of Defense Technology College of Information and Communication National University of Defense Technology State Key Laboratory of Integrated Service Networks Xidian University

This paper explores covert broadcast communication in a challenging situation in which the transmitter, Alice, faces uncertainty regarding the position of the passive adversary, Willie. In this situation,controlling the signal exposure becomes difficult. Specifically, this paper focuses on the cases where Alice can delimit the suspicious areas where Willie may be located. The suspicious areas can have arbitrary number and shapes. Under the Rician fading model, the analytical expression of Willie's detection performance is derived. Then, the transmit power, the beamforming direction, and the number of channel uses are jointly designed to minimize the optimal Willie's detection performance among all the possible positions of Willie, on the premise of satisfying receivers' quality-of-service requirements. To tackle the formulated knotty problem with an infinite number of irregular and discontinuous Willie's possible positions, the continuous nature of the antenna pattern is exploited to convert the original problem into the one with a finite number of possible positions, by sampling the suspicious areas. Then, different algorithms are developed to address the resultant non-convex optimization problem for single-antenna Willie and multi-antenna Willie, respectively. Numerical results demonstrate significant performance gains of the proposed scheme over the widely-adopted maximum ratio transmission scheme, which indicates that simply adjusting the main lobe towards the receiver is indeed far away from optimum and shows the importance of leveraging Alice's limited knowledge of Willie's position.

关键词： low-probability-of-detection communication multiple antennas covertness performance uncertain position parameters optimization

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Secure separable reversible data hiding of halftone image in blockchain

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The Journal of China Universities of Posts and Telecommunications 2022年第2期29卷 85-96页

作者： ding haiyang College of Information Engineering Beijing Institute of Graphic CommunicationBeijing 102600China Information Security Center Beijing University of Posts and TelecommunicationsBeijing 100876China

To realize the distributed storage and management of a secret halftone image in blockchain,a secure separable reversible data hiding(RDH)of halftone image in blockchain(SSRDHB)was proposed.A secret halftone image can be used as the original image to generate multiple share images which can be distributed storage in each point of blockchain,and additional data can be hidden to achieve management of each share ***,the secret halftone image was encrypted through Zu Chongzhi(ZUC)algorithm by using the encryption key(EK).Secondly,the method of using odd or even of share data was proposed to hide data,and a share dataset can be generated by using polynomial ***,multiple share images can be obtained through selecting share data,and different additional data can be hidden through controlling odd or even of share data,and additional data can be protected by using data-hiding key(DK).After sharing process,if the receiver has both keys,the halftone image can be recovered and additional data can be revealed,and two processes are *** results show that multiple share images hidden additional data can be obtained through SSRDHB,and the halftone image can be recovered with 100%by picking any part of share images,and one additional data can be revealed with 100%by picking any one share image.

关键词： separable reversible data hiding(RDH) halftone image secret sharing blockchain additional data

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基于显著性自适应权重图的红外可见光图像融合

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激光与光电子学进展 2024年第10期61卷 388-395页

作者：丁海洋董明利刘陈华陆熙田郭晨彤北京信息科技大学仪器科学与光电工程学院光电测试技术及仪器教育部重点实验室北京100192 北京信息科技大学光纤传感与系统北京实验室北京100016 广州南沙光子感知技术研究院广东广州511462

为改善现有融合策略对源图像信息利用不够充分的问题,利用滚动引导滤波器和各向异性扩散来提取基础层和细节层,对获取的基础层和细节层分别使用视觉显著映射和权重图构建的方法进行融合,然后添加某一权重将融合后的基础层与细节层图像... 详细信息

为改善现有融合策略对源图像信息利用不够充分的问题,利用滚动引导滤波器和各向异性扩散来提取基础层和细节层,对获取的基础层和细节层分别使用视觉显著映射和权重图构建的方法进行融合,然后添加某一权重将融合后的基础层与细节层图像融合为最终图像。基于公开数据集的多个场景进行方法实验验证。实验结果表明,相比其他方法,所提方法得到的融合结果具有更好的对比度,在保持图像像素强度均匀分布的前提下在边缘细节处保留了丰富的纹理特征,具有更好的视觉效果和融合精度,同时在平均梯度、信息熵、空间频率等指标上取得了显著的进步。

关键词：图像融合红外与可见光图像视觉显著映射各向异性扩散权重图构建

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Secure coordinated direct and untrusted relay transmissions via interference engineering

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Science China(Information Sciences) 2022年第8期65卷 213-227页

作者： Lu LV Zan LI haiyang ding Yuchen ZHOU Jian CHEN State Key Laboratory of Integrated Services Networks Xidian University National Mobile Communications Research Laboratory Southeast University School of Information and Communications National University of Defense Technology

This paper investigates the physical layer security issue of the coordinated direct and untrusted relay transmissions, considering both uplink and downlink scenarios. To effectively prevent the untrusted relay from eavesdropping on the confidential information it receives, two novel interference-assisted jamming schemes are proposed, where the inter-user interference and the artificial noise are intelligently engineered to degrade the signal reception quality at the untrusted relay, therefore enhancing the physical layer security for the uplink and downlink coordinated transmission, respectively. For each of the two proposed jamming schemes, a lower bound for the ergodic secrecy sum rate(ESSR) is derived in closed form to evaluate the secrecy performance. To obtain more system design insights, we further provide an asymptotic analysis for the ESSR scaling laws over the regimes of the high signal-to-noise ratio and a large number of antennas at the base-station. We carry out computer simulations to confirm the accuracy of the derived theoretical *** simulation results show that the proposed jamming schemes achieve a similar asymptotic performance limit to the case of using a trusted relay. Moreover, the proposed jamming schemes guarantee perfect security for both uplink and downlink coordinated transmissions, and yield a significant ESSR improvement compared with three other baseline schemes.

关键词： physical layer security untrusted relay interference exploitation coordinated transmission ergodic secrecy rate

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Research and design of CRT-based homomorphic ciphertext database system

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High-Confidence Computing 2022年第4期2卷 1-7页

作者： De Zhao Zhenzhen Li haiyang ding Zhenzhen Zhang Zichen Li College of Information Engineering Beijing Institute of Graphic CommunicationBeijingChina Digital Copyright Protection Technology Research Center Beijing Institute of Graphic CommunicationBeijingChina

The cloud’s storage and query of private information have the cryptographic scholar due to the proliferation of cloud *** the traditional query mode,the private information stored in the cloud is at risk of being *** order to solve this problem,a cloud ciphertext database system based on homomorphic encryption is a valid *** paper presents a new cloud ciphertext database system model,which is based on the existing ciphertext database mode research and homomorphic *** paper also implements a ciphertext database system based on a CRT-based additive homomorphic scheme according to the *** theoretical analysis,the model is CPA-level safe and *** experimental results show that users can correctly query and download the data in the ciphertext database on the untrusted cloud server through the model,and it has efficiency advantages.

关键词： Ciphertext database Homomorphic encryption Chinese remainder theorem

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Insight into Hydrolytic Stability and Tribological Properties of B-N Coordination Tung Oil-Based Lubricant Additive in Water

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Journal of Renewable Materials 2023年第3期11卷 1367-1381页

作者： Na Yao haiyang ding Mei Li Pengcheng Wang Shouhai Li Lina Xu Xiaohua Yang Institute of Ecological Conservation and Restoration CAFBeijing100091China Institute of Chemical Industry of Forest Products CAF、National Engineering Laboratory for Biomass Chemical Utilization、Key Laboratory of Chemical Engineering of Forest ProductsNational Forestry and Grassland Administration、Key Laboratory of Biomass Energy and MaterialJiangsu Province、Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesNanjing210042China School of Chemical Engineering Nanjing University of Science&TechnologyNanjing210094China

A tung oil-based boron-nitrogen coordination polymer(TWE-BN)was specially designed and synthesized as a highly efficient water-based lubricant additive,which has been beneficial to both energy conservation and conducive to environmental *** hydrolysis stability and tribological properties in water were *** better research the lubricating properties,and thus to understand the interaction between the surface and the lubricating ***,both experimental and theoretical computations based on density functional theory(DFT)were *** addition of TWE-BN reduces the water friction coefficient and wear scar diameter,and the maximum non-seizure load increased from 93 to 726 ***,the anti-corrosion ability on copper was classified as 1b *** stainless-steel surface was analyzed using scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS).In hydrolytic stability testing,TWE-BN was better than nitrogen-free tung oil-based lubricant additive(TWE-B)and remained non-hydrolyzed for at least 15 days,implying the feasibility of tung oil-based boron-nitrogen coordination as highly effective and hydrolytic stability lubricant additives.

关键词： Tribological properties tung oil borate hydrolytic stability boron-nitrogen coordination

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Multifunctional Lubricant Additive Improves Lubrication and Antioxidation Properties of Tung Oil

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Journal of Renewable Materials 2023年第7期11卷 3115-3128页

作者： Na Yao haiyang ding Mei Li Shouhai Li Lina Xu Xiaohua Yang Institute of Chemical Industry of Forest Products CAFNational Engineering Laboratory for Biomass Chemical UtilizationKey Laboratory of Chemical Engineering of Forest ProductsNational Forestry and Grassland AdministrationKey Laboratory of Biomass Energy and Material of Jiangsu ProvinceJiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesNanjing210042China Institute of Ecological Conservation and Restoration CAFBeijing100091China

It is of considerable significance to develop efficient and environmentally friendly machinery lubricant additives because of the increasing depletion of petrochemical resources and severe environmental ***,we proposed a facile strategy to synthesize a multifunctional vegetable oil-based lubricant via the lignin derivative vanillin coupled to amine and diethyl phosphite to produce a lubricating additive with both extreme pressure and antioxidant *** with pure tung oil,the lubricating and antioxidant performance of tung oil is significantly improved after adding *** the 1.0 wt%additive to the tung oil reduced the friction wear coefficient and the volume,and the oxidation induction time was much longer than pure tung oil.

关键词： Tung oil lubricant additives antioxidation multifunction

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Resistance development,cross-resistance,and fitness costs associated with Aphis gossypii resistance towards sulfoxaflor and acetamiprid in different geographical regions

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Journal of Integrative Agriculture 2024年第7期23卷 2332-2345页

作者： Wei Wang Renfu Zhang haiyang Liu Ruifeng ding Qiushi Huang Ju Yao Gemei Liang Key Laboratory of Integrated Pest Management on Crop in Northwestern Oasis of Ministry of Agriculture and Rural Affairs Institute of Plant ProtectionXinjiang Academy of Agricultural SciencesUrumqi 830091China State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China

Aphis gossypii has become increasingly difficult to manage due to its strong insecticide *** the laboratory,we established sulfoxaflor-resistant and acetamiprid-resistant strains in two *** populations with different basal insecticide resistance levels,and evaluated the effects of basal insecticide resistance on the resistance development and cross-resistance,as well as differences in *** the same selection pressure,Yarkant ***(with low basal insecticide resistance)evolved resistance to sulfoxaflor and acetamiprid more quickly than Jinghe ***(with high basal insecticide resistance),and the evolution of *** resistance to sulfoxaflor developed faster than acetamiprid in both Yarkant and Jinghe,Xingjiang,*** sulfoxaflor-resistant strains selected from Yarkant and Jinghe developed significant cross-resistance to acetamiprid,imidacloprid,thiamethoxam and pymetrozine;while the acetamiprid-resistant strains developed significant cross-resistance to sulfoxaflor,imidacloprid,thiamethoxam,pymetrozine,and *** relative fitness of *** decreased as the resistance to sulfoxaflor and acetamiprid *** relative fitness levels of the sulfoxaflor-resistant strains(Yarkant-SulR and Jinghe-SulR)were lower than those of the acetamipridresistant strains(Yarkant-AceR and Jinghe-AceR).In addition,the relative fitness levels of sulfoxaflor-and acetamiprid-resistant strains were lower in Jinghe than in *** summary,basal insecticide resistance of *** and insecticide type affected the evolution of resistance to insecticides in ***,as well as cross-resistance to other *** sulfoxaflor-and acetamiprid-resistant *** strains had obvious fitness *** results of this work will contribute to the insecticide resistance management and integrated management of ***.

关键词： Aphis gossypii sulfoxaflor acetamiprid cross-resistance fitness costs different sensitivities

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生物质功能配方肥在小麦生产中的应用研究

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肥料与健康 2024年第3期51卷 22-24,74页

作者：秦汉俊张晓林李华丁海洋谭刘静陈毛华安徽国祯生态农业科技有限公司安徽阜阳236000 阜阳职业技术学院安徽阜阳236000

基于我国土壤酸化面积不断增加和中微量元素的缺乏,科学配比酸性土壤调理剂农林生物质灰与复合肥,开发了生物质功能配方肥。为验证生物质功能配方肥对农作物生长和土壤酸碱度的影响,以小麦为试验对象,以施用普通复合肥为对照(CK)处理,... 详细信息

基于我国土壤酸化面积不断增加和中微量元素的缺乏,科学配比酸性土壤调理剂农林生物质灰与复合肥,开发了生物质功能配方肥。为验证生物质功能配方肥对农作物生长和土壤酸碱度的影响,以小麦为试验对象,以施用普通复合肥为对照(CK)处理,开展了田间小区试验。结果表明:与CK处理相比,施用生物质功能配方肥处理的小麦增产2.76%~5.19%,净增效益93.35~127.87元/亩(1亩=667 m^(2));小麦收获后,土壤的pH由5.3提高至5.5~5.8。施用生物质功能配方肥,在保证小麦产量的同时,可实现用地与养地的结合,并促进土地资源的可持续利用。

关键词：生物质灰土壤调理剂土壤酸化减肥增效

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(k, n) halftone visual cryptography based on Shamir＇ s secret sharing

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The Journal of China Universities of Posts and Telecommunications 2018年第2期25卷 60-76页

作者： ding haiyang Li Zichen Bi Wei College of Information Engineering Beijing Institute of Graphic Communication Beijing 102600 China Information Security Center Beijing University of Posts and Telecommunications Beijing 100876 China Seele Tech Corporation San Francisco 94107 USA Zsbatech Corporation Beijing 100088 China

（k, n） halftone visual cryptography （HVC） is proposed based on Shamir＇ s secret sharing （HVCSSS）, and through this method a binary secret image can be hided into n halftone images, and the secret image can be revealed from any k halftone images. Firstly, using Shamir＇ s secret sharing, a binary secret image can be shared into n meaningless shares; secondly, hiding n shares into n halftone images through self-hiding method; and then n extracted shares can be obtained from n halftone images through self-decrypt method; finally, picking any k shares from n extracted shares, the secret image can be revealed by using Lagrange interpolation. The main contribution is that applying Shamir＇ s secret sharing to realize a （k, n） HVC, and this method neither requires code book nor suffers from pixel expansion. Experimental results show HVCSSS can realize a （k, n） HVC in gray-scale and color halftone images, and correct decoding rate （CDR） of revealed secret image can be guaranteed.

关键词： Shamir' s secret sharing (k,n) VC self-hiding self-deerypt Lagrange interpolation

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