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Generalized cryptanalysis of RSA with small public exponent

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Science China(Information Sciences) 2016年第3期59卷 97-106页

作者： Mengce ZHENG Honggang HU zilong wang Key Laboratory of Electromagnetic Space Information Chinese Academy of Sciences (CAS) School of Information Science and Technology University of Science and Technology of China

In this paper, we demonstrate that there exist weak keys in the RSA public-key cryptosystem with the public exponent e = NαN0.5. In 1999, Boneh and Durfee showed that when α≈ 1 and the private exponent d = Nβ< N0.292, the system is insecure. Moreover, their attack is still effective for 0.5 < α < *** propose a generalized cryptanalytic method to attack the RSA cryptosystem with α≤0.5. For c = [（1-α）/α] and eγc≡ d（mod ec）, when γ, β satisfy γ < 1+1/c-1/（2αc） and β < αc +7/6- αγc-1/3（6α + 6αc + 1- 6αγc）1/2, we can perform cryptanalytic attacks based on the LLL algorithm. The basic idea is an application of Coppersmith's techniques and we further adapt the technique of unravelled linearization, which leads to an optimized *** advantage is that we achieve new attacks on RSA with α 0.5 and consequently, there exist weak keys in RSA for most α.

关键词： cryptanalysis RSA LLL algorithm Coppersmith’s techniques unravelled linearization

The Parabrachial Nucleus as a Key Regulator of Neuropathic Pain

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Neuroscience Bulletin 2021年第7期37卷 1079-1081页

作者： zilong wang Zhen-Zhong Xu Department of Anesthesiology Center for Translational Pain MedicineDuke University Medical CenterDurhamNC 27710USA SUSTech Center for Pain Medicine School of MedicineSouthern University of Science and TechnologyShenzhen 518055China Department of Neurobiology and Department of Anesthesiology of the First Affiliated Hospital NHC and CAMS Key Laboratory of Medical NeurobiologyZhejiang University School of MedicineHangzhou 310058ZhejiangChina

Neuropathic pain is a chronic pain caused by peripheral or central nervous system injury or diseases that affect the somatosensory nervous *** is usually associated with abnormal sensations called dysesthesia and exaggerated pain from normally innocuous stimuli(allodynia)or noxious stimuli(hyperalgesia),and also aversive emotional responses[1,2].Neuropathic pain can be very difficult to treat,as classical analgesics like opioids produce inadequate pain relief and may cause tolerance and hyperalgesia,and even addiction after long-term use[3].Thus,it is of critical importance to study the mechanisms of development,maintenance,and resolution of neuropathic *** study from ***’s research team at Zhejiang University reveals a critical regulatory mechanism for neuropathic pain[4].

关键词： sensation diseases opioid

LoS sensing-based superimposed CSI feedback for UAV-assisted mmWave systems

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Chinese Journal of Aeronautics 2023年第12期36卷 349-360页

作者： Chaojin QING Qing YE Wenhui LIU zilong wang Jiafan wang Jinliang CHEN School of Electrical Engineering and Electronic Information Xihua UniversityChengdu 610039China School of Aeronautics and Astronautics Xihua UniversityChengdu 610039China

In Unmanned Aerial Vehicle(UAV)-assisted millimeter Wave(mmWave)systems,Channel State Information(CSI)feedback is critical for the selection of modulation schemes,resource management,beamforming,***,traditional CSI feedback methods lead to significant feedback overhead and energy consumption of the UAV transmitter,therefore shortening the system operation *** tackle these issues,inspired by superimposed feedback and Integrated Sensing and Communications(ISAC),a Line of Sight(LoS)sensing-based superimposed CSI feedback scheme is ***,on the UAV transmitter side,the Ground-to-UAV(G2U)CSI is superimposed on the UAV-to-Ground(U2G)data to feed back to the ground Base Station(gBS).At the gBS,the dedicated LoS Sensing Network(LoS-SenNet)is designed to sense the U2G CSI in LoS and NLoS *** the sensed result of LoS-SenNet,the determined G2U CSI from the initial feature extraction will work as the priori information to guide the subsequent ***,for the G2U CSI in NLoS,a CSI Recovery Network(CSI-RecNet)and superimposed interference cancellation are developed to recover the G2U CSI and U2G *** for the LoS scenario,a dedicated LoS Aid Network(LoS-Aid Net)is embedded before the CSI-RecNet and the block of superimposed interference cancellation to highlight the feature of the G2U *** with other methods of superimposed CSI feedback,simulation results demonstrate that the proposed feedback scheme effectively improves the recovery accuracy of the G2U CSI and U2G ***,against parameter variations,the proposed feedback scheme presents its robustness.

关键词： Channel State Information(CSI) Integrated Sensing and Communications(ISAC) Line of Sight(LoS)sensing Superimposed CSI feedback Unmanned Aerial Vehicle(UAV)-assisted millimeter Wave(mmWave)systems

Numerical and experimental research of the characteristics of concentration solar cells

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Frontiers in Energy 2021年第2期15卷 279-291页

作者： zilong wang Hua ZHANG Binlin DOU Weidong WU Guanhua ZHANG Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering School of Energy and Power EngineeringUniversity of Shanghai for Science and TechnologyShanghai 200093China

The development of automatic tracking solar concentrator photovoltaic systems is currently attracting growing *** concentration photovoltaic systems(HCPVs)combining triple-junction InGaP/lnGaAs/Ge solar cells with a concentrator provide high conversion *** mathematical model for triple-junction solar cells,having a higher efficiency and superior temperature characteristics,was established based on the one-diode equivalent circuit cell model.A paraboloidal concentrator with a secondary optic system and a concentration ratio in the range of 100X–150X along with a sun tracking system was developed in this *** GaInP/GalnAs/Ge triple-junction solar cell,produced by AZUR SPACE Solar Power,was also used in this *** solar cells produced by Shanghai Solar Youth Energy(SY)and Shenzhen Yinshengsheng Technology ***.(YXS)were used as comparison samples in a further comparative study at different concentration ratios(200X–1000X).A detailed analysis on the factors that influence the electrical output characteristics of the InGaP/lnGaAs/Ge solar cell was conducted with a dish-style concentrating photovoltaic *** results show that the short-circuit current(Isc)and the open-circuit voltage(Voc)of multi-junction solar cells increases with the increasing concentration ratio,while the cell efficiency(ηc)of the solar cells increases first and then decreases with increasing concentration *** increasing solar cell temperature,Isc increases,while Voc andηc decrease.A comparison of the experimental and simulation results indicate that the maximum root mean square error is less than 10%,which provides a certain theoretical basis for the study of the characteristics of triple-junction solar cell that can be applied in the analysis and discussion regarding the influence of the relevant parameters on the performance of high concentration photovoltaic systems.

关键词： concentration three-junction solar cell mathematical model electrical properties solar energy

Improved differential-neural cryptanalysis for round-reduced SIMECK32/64

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Frontiers of Computer Science 2023年第6期17卷 187-189页

作者： Liu ZHANG Jinyu LU zilong wang Chao LI School of Cyber Engineering Xidian UniversityXi’an 710126China State Key Laboratory of Cryptology Beijing 100878China College of Sciences National University of Defense TechnologyChangsha 410073China

1 Introduction In CRYPTO 2019,Gohr[1]innovatively integrated deep learning with differential cryptanalysis,specifically applied to SPECK32/64,resulting in the development of a neural distinguisher(ND)that outperforms the DDT-based distinguisher(DD).Subsequently,a hybrid distinguisher(HD)was introduced,combining the strengths of ND and a classical differential(CD)and the practical realization of 11-and 12-round key recovery attacks is *** 2022,Lyu et al.[2]further enhanced Gohr's framework,applying it to SIMECK32/*** more deeply evaluate the security of SIMECK32/64,we made some improvements for differentialneural cryptanalysis,as listed below.

关键词： neural differential analysis

Mechanical and corrosion properties of biodegradable magnesium mini-tubes with different grain morphologies:Size and distribution

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Journal of Materials Science & Technology 2024年第16期183卷 165-174页

作者： Xiang wang Chun Chen Bozun Miao zilong wang Hua Huang Shaokang Guan Guangyin Yuan National Engineering Research Center of Light Alloy Net Forming and Key State Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240 China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China

Biodegradable magnesium(Mg)alloys have received much attention due to their biocompatibility and *** this study,to uncover the effects of grain morphologies,including grain size and distribution on mechanical and corrosion properties,biodegradable Mg-2.1Nd-0.2Zn-0.5Zr(wt.%)(denoted as JDBM)alloy mini-tubes for stent application with three typical microstructures were achieved success-fully by adjusting drawing *** with the bimodal structure exhibit the highest strengthductility balance attributed to the combined effects of fine grains and coarse grains,but show the fastest corrosion rate of about 1.00±0.136 mm/year mainly due to the formation of micro galvanic couples between coarse and fined *** with fine equiaxed grains show the lowest corrosion rate of about 0.17±0.059 mm/year,as well as uniform corrosion mode and mechanical properties of yield strength(YS)256±5.7 MPa,ultimate tensile strength(UTS)266±3.8 MPa,and elongation to failure(EL)13.5%±1.8%,attributed to the high-density grain *** with coarse equiaxed grains exhibit medium corrosion resistance and mechanical properties of about 175±4.8 MPa,221±4.0 MPa,and 21.53%±4.1%.Considering the mechanical and in vitro corrosion properties,biodegradable JDBM alloy implants are recommended to be composed of fine equiaxed grains,which can be used as microstructural targets for fabrication and processing.

关键词： Magnesium alloy Grain morphology Corrosion Mechanical properties Mini-tubes

Revealing the Multifunctional Electrocatalysis of Indium-Modulated Phthalocyanine for High-Performance Lithium-Sulfur Batteries

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Energy & Environmental Materials 2024年第1期7卷 1-8页

作者： Yang Guo Zhaoqing Jin Jianhao Lu zilong wang Zihao Song Anbang wang Weikun wang Yaqin Huang Beijing Key Laboratory of Electrochemical Process and Technology for Materials Key Laboratory of Biomedical Materials of Natural MacromoleculesMinistry of EducationBeijing University of Chemical TechnologyBeijing 100029China Research Institute of Chemical Defense Beijing Key Laboratory of Advanced Chemical Energy Storage Technology and MaterialsBeijing 100191China

The sluggish kinetics of complicated multiphase conversions and the severe shuttling effect of lithium polysulfides(LiPSs)significantly hinder the applications of Li-S battery,which is one of the most promising candidates for the next-generation energy storage ***,a bifunctional electrocatalyst,indium phthalocyanine self-assembled with carbon nanotubes(InPc@CNT)composite material,is proposed to promote the conversion kinetics of both reduction and oxidation processes,demonstrating a bidirectional catalytic effect on both nucleation and dissolution of Li_(2)S *** theoretical calculation shows that the unique electronic configuration of InPc@CNT is conducive to trapping soluble polysulfides in the reduction process,as well as the modulation of electron transfer dynamics also endows the dissolution of Li_(2)S in the oxidation reaction,which will accelerate the effectiveness of catalytic conversion and facilitate sulfur ***,the InPc@CNT modified separator displays lower overpotential for polysulfide transformation,alleviating polarization of electrode during *** integrated spectroscopy analysis,HRTEM,and electrochemical study reveal that the InPc@CNT acts as an efficient multifunctional catalytic center to satisfy the requirements of accelerating charging and discharging ***,the Li-S battery with InPc@CNT-modified separator obtains a discharge-specific capacity of 1415 mAh g^(-1)at a high rate of 0.5 ***,the 2 Ah Li-S pouch cells deliver 315 Wh kg^(-1)and achieved 80%capacity retention after 50 cycles at 0.1 C with a high sulfur loading of 10 mg cm^(-2).Our study provides a practical method to introduce bifunctional electrocatalysts for boosting the electrochemical properties of Li-S batteries.

关键词： bidirectional catalyst indium phthalocyanine lithium-sulfur batteries pouch cells

Magnetic properties and microstructures of terbium coated and grain boundary diffusion treated sintered Nd-Fe-B magnets by magnetron sputtering

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Journal of Rare Earths 2021年第2期39卷 167-173页

作者： Wei Zhu Yang Luo zilong wang Xinyuan Bai Haijun Peng Dunbo Yu National Engineering Research Center for Rare Earth Materials GRINM Group Co.Ltd.Beijing 100088China GRIREM Advanced Materials Co. Ltd.Beijing 100088China General Research Institute for Nonferrous Metals Beijing 100088China

Tb coating on the surface of commercial sintered Nd-Fe-B magnet was prepared by DC magnetron *** secondary heat treatment was used to regulate the microstructure for the enhancement of coercivity,namely diffusion treatment and annealing *** coercivity increases significantly from 18.3 to 28.0 kOe,the remanence decreases slightly from 14.1 to 14.0 kGs,and the comprehensive magnetic properties are higher than 75(Hcj+(BH)_(max)=76.7).SEM results indicate that,on the one hand,950℃is the optimal diffusion *** diffusion temperature results in insufficient diffusion of Tb *** diffusion temperature can lead to the main phase grain growth,the decrease of Nd-rich phase,and forming holes in the *** the other hand,500℃is the optimal annealing *** annealing temperature can result in the reduction of Nd-rich *** annealing temperature can generate the non-defined Nd-rich thin layer between grains.

关键词： Sintered Nd-Fe-B magnets Magnetron sputtering Tb coating Magnetic properties Rare earths

Manipulating Interfacial Stability Via Absorption-Competition Mechanism for Long-Lifespan Zn Anode

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Nano-Micro Letters 2022年第2期14卷 161-173页

作者： Meijia Qiu Liang Ma Peng Sun zilong wang Guofeng Cui Wenjie Mai Key Laboratory for Polymeric Composite&Functional Materials of Ministry of Education School of ChemistryKey Laboratory of Low-Carbon Chemistry&Energy Conservation of Guangdong ProvinceSun Yat-Sen UniversityGuangzhou 510275People’s Republic of China Siyuan Laboratory Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy MaterialsGuangzhou Key Laboratory of Vacuum Coating Technologies and New Energy MaterialsDepartment of PhysicsJinan UniversityGuangdong 510632People’s Republic of China

The stability of Zn anode in various Znbased energy storage devices is the key problem to be ***,aromatic aldehyde additives are selected to modulate the interface reactions between the Zn anode and *** comprehensively considering electrochemical measurements,DFT calculations and FEA simulations,novel mechanisms of one kind of aromatic aldehyde,veratraldehyde in inhibiting Zn dendrite/by-products can be *** additive prefers to absorb on the Zn surface than H_(2)O molecules and Zn^(2+),while competes with hydrogen evolution reaction and Zn plating/stripping proces s via redox reactions,thus preventing the decomposition of active H_(2)O near the interface and uncontrollable Zn dendrite growth via a synactic absorption-competition *** a result,Zn-Zn symmetric cells with the veratraldehyde additive realize an excellent cycling life of 3200 h under 1 mA cm^(-2)/1 mAh cm^(-2)and over 800 h even under 5 mA cm^(-2)/5 mAh cm^(-2).Moreover,Zn-Ti and Zn-MnO_(2)cells with the veratraldehyde additive both obtain elevated performance than that with pure ZnSO_(4)***,two more aromatic aldehyde additives are chosen to prove their universality in stabilizing Zn anodes.

关键词： Aromatic aldehyde Absorption-competition mechanism Zn anode Interfacial stability