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Cryptanalysis of AEGIS-128

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Chinese Journal of Electronics 2022年第2期31卷 285-292页

作者： SHI Tairong HU Bin guan jie wang Senpeng PLA SSF Information and Engineering University Institute of Software Chinese Academy of Sciences

AEGIS, an authenticated encryption（AE） algorithm designed by H. J. Wu and B. Preneel, is one of the six winners of the Competition for Authenticated Encryption: Security, Applicability, and Robustness,which was launched by the National Institute of Standards and Technology. In this paper, we comprehensively investigate the existence of collision in the initialization of AEGIS-128 and evaluate the number of advanced encryption standard（AES） round functions involved in initialization, which reflects the resistance to differential attack.As a result, we find that there are 40 AES round functions, which is less than 50 ones claimed in the design document. We also prove that AEGIS-128 is strong enough to resist adversary who has access to partial state.In particular, we present a collision-based distinguisher and exploit it to recover the key of 4-step and 5-step（out of the full 10） AEGIS-128. The time and memory complexities are about 2;and 2;respectively. Specifically,we quantize the attack of 4-step AEGIS-128, in which we solve the technical issue of dealing with the function that does not fulfill Simon’s promise. It is noted that the nonce is not reused in our work. Although we present some results of AEGIS-128 that exceed the existed analysis, the security margin of AEGIS-128 remains large.

关键词： CAESAR AEGIS Collision analysis Quantum Simon’s algorithm Differential property

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有损耗波导中光传播的新计算处理（英文）

Frontiers of Information Technology & Electronic Engineering 2015年第8期16卷 646-653页

作者： Jian-xin ZHU Guan-jie wang Department of Mathematics Zhejiang University

目的:通过改进算子步进方法,实现快速、高精度计算光在有损耗波导中传播性态,有效指导光波导的优化设计。创新点:提出用共轭微分矩阵在算子步进方法中进行局部基转换,避免了求逆运算。所提处理方法提高了步进计算的稳定性,改善了传播计... 详细信息

目的:通过改进算子步进方法,实现快速、高精度计算光在有损耗波导中传播性态,有效指导光波导的优化设计。创新点:提出用共轭微分矩阵在算子步进方法中进行局部基转换,避免了求逆运算。所提处理方法提高了步进计算的稳定性,改善了传播计算精度。方法:针对光波在有损耗波导中传播的数学模型-带有复折射率的Helmholtz方程,对基于Dt N(Dirichlet-to-Neumann)映射(把边值问题化为初值问题)的单侧重构算子步进求解方法进行改进。一方面用切比雪夫伪谱方法离散方程的横向算子,另一方面为避免求逆,采用共轭微分矩阵在算子步进方法中实施局部基转换;最后,用改进所得的算子步进求解方法计算波在有损耗波导中的传播性态。结论:对带有复折射率的Helmholtz方程的边值问题求解,提出了改进算子步进求解方法。实施该方法能快速、高精度地求解此问题,并得到光波在有损耗波导中传播真实性态,进而有助于光电器件的优化设计。

关键词：波导光学 Chebyshev拟谱方法光波传播 Dirichlet 计算亥姆霍兹方程复折射率离散方程

Ligand Engineering in Metal Nanoclusters: from Structural Control to Functional Modulation

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Chinese Journal of Structural Chemistry 2020年第7期39卷 1194-1200页

作者： guan Zong-jie wang Quan-Ming Department of Chemistry Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of EducationTsinghua UniversityBeijing 100084China

Ligand-protected metal nanoclusters have drawn increasing research interest because of their unique physicochemical properties and practical applications.Great efforts have been made in pursuing rational synthesis of metal nanoclusters and establishing the structure-property relationships.As an indispensable part of ligand-protected metal nanoclusters,ligands play multiple roles in determining their structures and properties.In this perspective,we demonstrate the importance of ligand engineering in terms of the control of structures,optical and catalytic properties of metal nanoclusters.Furthermore,we will show that ligand engineering is prospective in structural design and preorganization of surface metal sites.

关键词： metal nanoclusters physicochemical properties structure-property relationship ligand engineering

Analysis of volatile compounds in Herba Asari by single-drop micro-extraction gas chromatography mass spectrometry

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Chinese Chemical Letters 2013年第6期24卷 542-544页

作者： Guan-jie wang Mei-Ling Qi National Institutes for Food and Drug Control School of Chemistry Beijing Institute of Technology

A rapid headspace single-drop micro-extraction（mix） gas chromatography mass spectrometry（SDMEGC -MS） for the analysis of the volatile compounds in Herba Asari was developed in this study.A mixed solvent of n-tridecane and butyl acetate（1：1） was finally used for the extraction at 70 C for 15 min with sample amount of 0.750 g and 100 mesh particle size.Under the determined conditions,the pound samples of Herba Asari were directly applied for the analysis.SDME-GC-MS,SPME-GC-MS and SD-GCMS methods were compared and the results showed that SDME-GC-MS method was a simple, inexpensive and effective way to measure the volatile compounds in Herba Asari and could be used for the analysis of volatile compounds in complex samples.

关键词： Single-drop micro-extraction Herba Asari Volatile compounds Traditional Chinese medicine

Bavachin induces apoptosis in colorectal cancer cells through Gadd45a via the MAPK signaling pathway

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Chinese Journal of Natural Medicines 2023年第1期21卷 36-46页

作者： wang Mengru TIAN Baopeng SHEN jie XU Shilin LIU Cong guan Ling GUO Min DOU jie College of Life Science and Technology China Pharmaceutical UniversityNanjing 211198China

Bavachin is a dihydroflavonoid compound isolated from Psoralea corylifolia,and exhibits anti-bacterial,anti-inflammatory,anti-tumor and lipid-lowering activities.Recent attention has gradually drawn on bavachin-induced apoptosis in many human cancer cell lines.However,the anti-cancer effects and related mechanisms in colorectal cancer remain unknown.Here,we investigated the effects of bavachin on colorectal cancer in vivo and in vitro.The results showed that bavachin inhibited the proliferation of human colorectal cancer cells and induce apoptosis.These changes were mediated by activating the MAPK signaling pathway,which significantly up-regulated the expression of Gadd45a.Furthermore,Gadd45a silencing obviously attenuated bavachin-mediated cell apoptosis.Inhibition of the MAPK signaling pathway by JNK/ERK/p38 inhibitors also weakened the up-regulation of Gadd45a by bavachin.The anticancer effect of bavachin was also validated using a mouse xenograft model of human colorectal cancer.In conclusion,these findings suggest that bavachin induces the apoptosis of colorectal cancer cells through activating the MAPK signaling pathway.

关键词： Bavachin Apoptosis Colorectal cancer Gadd45a MAPK

Moderately concentrated electrolyte enabling high-performance lithium metal batteries with a wide working temperature range

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Journal of Energy Chemistry 2023年第4期79卷 201-210页

作者： Sisi wang Zhichen Xue Fulu Chu Zengqiang guan jie Lei Feixiang Wu School of Metallurgy and Environment Engineering Research Center of the Ministry of Education for Advanced Battery MaterialsHunan Provincial Key Laboratory of Nonferrous Value-added MetallurgyState Key Laboratory of Powder MetallurgyCentral South UniversityChangsha 410083HunanChina

The electrolyte integrated with lithium metal anodes is subjected to the issues of interfacial compatibility and stability,which strongly influence the performances of high-energy lithium metal batteries.Here,we report a new electrolyte recipe viz.a moderately concentrated electrolyte comprising of 2.4 M lithium bis(fluorosulfonyl)imide(LiFSI)in a cosolvent mixture of fluorinated ethylene carbonate(FEC)and dimethyl carbonate(DMC)with relatively high ion conductivity.Owing to the preferential decomposition of LiFSI and FEC,an inorganic-rich interphase with abundant Li_(2)O and LiF nanocrystals is formed on lithium metal with improved robustness and ion transfer kinetics,enabling lithium plating/stripping with an extremely low overpotential of~8 mV and the average CE of 97%.When tested in Li||LiFePO_(4) cell,this electrolyte provides long-term cycling with a capacity retention of 98.3%after 1000 cycles at 1 C and an excellent rate performance of 20 C,as well as an areal capacity of 1.35 mA h cm^(-2)at the cathode areal loading of 9 mg cm^(-2).Moreover,the Li||LiFePO_(4) cell exhibits excellent wide-temperature performances(-40~60℃),including long-term cycling stability over 2600 cycles without visible capacity fading at 0℃,as well as extremely high average CEs of 99.6%and 99.8% over 400 cycles under-20℃ and 45℃.

关键词： Moderately concentrated electrolyte Wide temperature range LiFePO_(4)cathode Lithium metal battery Solid electrolyte interphase

Detachable and hierarchical assemblies for recyclable and highly efficient oil-fouling removal

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Nano Research 2023年第2期16卷 2551-2562页

作者： Tengda wang Shaoying Dai jie wang Bin Liu Meiwen Cao Bo guan Yuchun Han Yilin wang CAS Key Laboratory of Colloid Interface and Chemical ThermodynamicsBeijing National Laboratory for Molecular Sciences(BNLMS)CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Heavy Oil Processing Department of Biological and Energy Chemical EngineeringCollege of Chemical EngineeringChina University of Petroleum(East China)Qingdao 266580China

Large-scale use of detergents to remove oil-fouling in industry continuously generates tremendous amounts of wastewater and thus leads to both economic and environmental problems.To develop recyclable oil-fouling removal strategy is an appealing solution but a challenging task.Herein,a kind of dynamic imine-based surfactant has been constructed by 2-formylbenzenesulfonic acid sodium salt(FBSS)and linear amines(CnNH_(2),n=6,7,8,10,and 12).Owing to high interfacial activity and strong assembly ability,dynamic FBSS/C8NH_(2)system can remove oil-fouling on multiple substrates for at least 10 cycles,largely reducing the toxicity to ecosystem.At basic pH,the hierarchical assemblies(from vesicle to network and hollow sphere)are formed and boost surfactant molecule enrichment around oil-fouling,leading to highly efficient emulsification.When pH is changed to acidic condition,the surfactant molecules dissociate due to the breaking of imine bonds,and accordingly the emulsion is destroyed and the released oil droplets float to the top layer.After removing the oil-fouling and adjusting the solution back to basic pH,the surfactant assemblies are reconstructed and used for the next oil-fouling cleaning cycle.This study provides a recyclable,efficient and eco-friendly oil-fouling removal approach,satisfying the need of sustainable development.

关键词： dynamic covalent bond hierarchical assembly oil-fouling removal emulsion oil/water separation

FeNiS_(2)/reduced graphene oxide electrocatalysis with reconstruction to generate FeNi oxo/hydroxide as a highly-efficient water oxidation electrocatalyst

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Rare Metals 2022年第12期41卷 4127-4137页

作者： Xiao-Zhen Ren Xue-Hui Li Yu-jie Peng guan-Zhi wang jie Yin Xing-Chuan Zhao Wei wang Xiao-Bai wang School of Materials Science and Engineering Liaocheng UniversityLiaocheng 252000China School of Metallurgy and Chemistry Engineering Jiangxi University of Science and TechnologyGanzhou 341000China Department of Materials Application Research AVIC Manufacturing Technology InstituteBeijing 100024China

It is critical to developing electrocatalysts with highly active and cost-effective for oxygen evolution to resolve environmental pollution and energy issues,in which FeNi-based nanomaterials hold a great promise.Herein,(Fe_(0.33 )Ni_(0.67))S_(2) and(Fe_(0.33 )Ni_(0.67))S_(2)/reduced graphene oxide(rGO)-x%(x=10,20) composites,which exhibited highly efficient oxygen evolution reaction(OER)electrocatalytic activity under alkaline conditions,were synthesized via a hydrothermal approach and following thermal treatment with sulfur powders.Benefiting from the integrated structure of(Fe_(0.33 )Ni_(0.67))S_(2)and support of conductive graphene backbones,(Fe_(0.33 )Ni_(0.67))S_(2)/rGO-20%electrocatalyst showed the best OER activity with an overpotential of 172 mV at 10 mA·cm^(-2)and Tafel slopes of 45 mV·decade^(-1).The composition,phase,and surface structure of the catalyst were characterized before and after OER reaction.The results indicated that crystal phase of the catalyst was reconstructed to the amorphous crystalline features after OER,with oxidation of iron-nickel sulfide and appearance of Ni-Fe oxo/hydroxide species,which may play a crucial role in the high OER performance as the catalytic-active.Moreover,in a two-electrode system towards overall water splitting with(Fe_(0.33 )Ni_(0.67))S_(2)/rGO-20%/NF and Pt/C/NF as the anode and cathode,respectively,the catalysts exhibited excellent catalytic performance with the voltage of only 1.42 V at 10 mA·cm^(-2).

关键词： Ternary nickel-iron sulfide Reduced graphene oxide(rGO) Electrocatalysts Water oxidation Self-reconstruction

A revisited security evaluation of Simeck family ciphers against impossible differential cryptanalysis

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Science China(Information Sciences) 2023年第3期66卷 297-298页

作者： Kai ZHANG Xuejia LAI Lei wang jie guan Bin HU PLA SSF Information Engineering University Department of Computer Science and Engineering Shanghai Jiao Tong University

Simeck is a family of lightweight block ciphers proposed at CHES 2015 [1]. The round function and key schedule of Simeck were inspired by SIMON and SPECK, which were proposed by the U.S. National Security Agency in 20... 详细信息

关键词： ZERO-CORRELATION