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Real-time state recovery attack against MORUS in nonce-misuse setting

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Science China(Information Sciences) 2019年第3期62卷 214-216页

作者： Tairong SHI jie guan Information Science and Technology Institute

Dear editor,CAESAR [1] is a large-scale cryptographic competition supported by the US National Institute of Standards and Technology, which mainly calls for authenticated ciphers. MORUS [2], an authenticated stream ci... 详细信息

关键词： Real-time state recovery attack against MORUS in nonce-misuse setting Si Pi

Nanoforming of transferred metal contacts for enhanced twodimensional field effect transistors

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Nano Research 2024年第4期17卷 3210-3216页

作者： Shuoheng Xu Zheng Huang jie guan Yaowu Hu The Institute of Technological Sciences Wuhan UniversityWuhan 430072China School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China School of Physics Southeast UniversityNanjing 211189China

Two-dimensional transition metal chalcogenides(2D-TMDs)have attracted much attention because of their unique layered structure and physical properties for transistor *** transferred metal contacts on these low-dimensional materials or their homogeneous and heterogeneous multilayers have generated huge interest to avoid deposition *** this paper,we show that there are large physical gaps at both the edge contact and surface contact between the transferred electrodes and the 2D materials.A method called laser shock induced superplastic deformation(LSISD)is proposed to tackle this issue and enhance the performance of the *** enhancement mechanism was investigated by molecular dynamics(MD)simulations of the nanoforming process,atomic force microscopy(AFM),scanning electron microscopy(SEM),transmission electron microscopy(TEM)characterizations of the interfaces,and density functional theory(DFT)*** force effect of laser shock can reduce the contact gap between metals and *** electrical performances of the transistors before and after LSISD,along with MD simulations,are used to find the optimal process *** addition,this paper applies the LSISD method to the short-channel MoS_(2)/graphene vertical transistors to show potential improvement in interface contact and electrical *** paper demonstrates the first report on using mechanical force induced by laser shock to enhance metal–semiconductor interfaces and transistor performances.

关键词： laser shock nanoforming metal-semiconductor contact electronics two-dimensional transistors

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 *** 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 *** 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： advanced encryption standard AES authenticated encryption algorithm cryptography 4-step AEGIS-128 authorisation

Automatic Search of Impossible Differentials and Zero-Correlation Linear Hulls for ARX Ciphers

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China Communications 2018年第2期15卷 54-66页

作者： Kai Zhang jie guan Bin Hu Zhengzhou Information Science and Technology Institute Zhengzhou 450000 China

In lightweight cryptographic primitives, round functions with only simple operations XOR, modular addition and rotation are widely used nowadays. This kind of ciphers is called ARX ciphers. For ARX ciphers, impossible differential cryptanalysis and zero-correlation linear cryptanalysis are among the most powerful attacks, and the key problems for these two attacks are discovering more and longer impossible differentials(IDs) and zero-correlation linear hulls(ZCLHs). However, finding new IDs and ZCLHs for ARX ciphers has been a manual work for a long time, which has been an obstacle in improving these two attacks. This paper proposes an automatic search method to improve the efficiency of finding new IDs and ZCLHs for ARX ciphers. In order to prove the efficiency of this new tool, we take HIGHT, LEA, SPECK three typical ARX algorithms as examples to explore their longer and new impossible differentials and zero-correlation linear hulls. To the best of our knowledge, this is the first application of automatic search method for ARX ciphers on finding new IDs and ZCLHs. For HIGHT, we find more 17 round IDs and multiple 17 round ZCLHs. This is the first discovery of 17 round ZCLHs for HIGHT. For LEA, we find extra four 10 round IDs and several 9 round ZCLHs. In the specification of LEA, the designers just identified three 10 round IDs and one 7round ZCLH. For SPECK, we find thousands of 6 round IDs and forty-four 6 round ZCLHs. Neither IDs nor ZCLHs of SPECK has been proposed before. The successful application of our new tool shows great potential in improving the impossible differential cryptanalysis and zero-correlation linear cryptanalysis on ARX ciphers..

关键词： automatic search tool impossibledifferential cryptanalysis zero-correlation lin-ear cryptanalysis ARX ciphers modes opera-tion

Collision Attacks against AEZ-PRF for Authenticated Encryption AEZ

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China Communications 2018年第2期15卷 46-53页

作者： Tairong Shi Chenhui Jin jie guan Information Science and Technology Institute Science Avenue High-Tech Zone Zhengzhou Henan 450001 China

AEZ is an AES-based authenticated encryption submitted to the ongoing CAESAR competition and was presented at Eurocrypt2015 with AEZ v3. There are three models for AEZ, AEZ-core, AEZ-tiny and AEZ-prf. In this paper, we consider the security of AEZprf for AEZ v4.2, the latest version of *** major finding is a collision of any 256-bit associated data for AES-prf. Then we launch collision attacks in a quantum setting and a classical setting respectively under different assumptions. In the quantum setting, by Simon's quantum algorithm, we amount a forgery with O(n) quantum superposition queries and an overwhelming probability close to *** the classical setting, one with the key of AEZ-prf can also construct the forgeries. Our results show that the AEZ-prf models of AEZ v4.2 is not secure in both the quantum setting and classical world. Furthermore, our results can also be applied to AEZ v3, which has been published on Eurocrypt 2015. As far as we know, no cryptanalysis of AEZ v4.2 has been published so far.

关键词： CAESAR competition authen-ticated encryption AEZ collision attacks quantum attacks

Strategies for reopening in the forthcoming COVID-19 era in China

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National Science Review 2022年第3期9卷 5-6页

作者： Wei-jie guan Nan-shan Zhong State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory Disease Guangzhou Institute of Respiratory Health The First Affiliated Hospital of Guangzhou Medical University Guangzhou Medical University Department of Thoracic Surgery Guangzhou Institute for Respiratory Health The First Affiliated Hospital of Guangzhou Medical University Guangzhou Medical University Department of Respiratory and Critical Care Medicine Foshan Second People's HospitalAffiliated Foshan Hospital of Southern Medical University

The transmission of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), the culprit pathogen of coronavirus disease 2019 (COVID-19), has resulted in more than 0.43 billion cases and 6 million deaths globally. Compared with other existing variants of concern, the Omicron variant is characterized by significantly greater infectivity (Ro≈6),greater tropism of the upper respiratory tract and lower severity of human infections [1].These characteristics of the Omicron variant are the basis upon which several developed countries are considering reopening.

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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 *** the determined conditions,the pound samples of Herba Asari were directly applied for the ***-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

Research on the Security Criterion of S-Boxes Against Division Property

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Chinese Journal of Electronics 2021年第1期30卷 85-91页

作者： WANG Senpeng HU Bin guan jie SHI Tairong ZHANG Kai PLA SSF Information Engineering University

As a generalized integral property, division property was proposed by Todo at EUROCRYPT *** propose a new security criterion of S-boxes against division property and prove that it is invariant under permutation-xor equivalence. Based on the criterion, the division properties of some important 4-bit S-boxes are showed. Then, we apply it to improve the resistance of ciphers against division-property-based integral attacks while keeping the same security level against other ***, the resistance of the cipher PRESENT against division-property-based integral attack is improved by 2 rounds, and the resistance of the cipher LBlock against division-property-based integral attack is improved by 1 round.

关键词： cryptography permutation-xor equivalence division-property-based integral attack division property PRESENT cipher security criterion S-boxes LBlock cipher generalized integral property

Is it necessary to use the entire root as a donor when transferring contralateral C7 nerve to repair median nerve？

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Neural Regeneration Research 2018年第1期13卷 94-99页

作者： Kai-ming Gao jie Lao Wen-jie guan Jing-jing Hu Department of Hand Surgery Huashan Hospital Fudan University Shanghai China Key Laboratory of Hand Reconstruction Ministry of Health Shanghai China Shanghai Key Laboratory of Peripheral Nerve and Microsurgery Shanghai China Nursing Department Huashan Hospital Fudan University Shanghai China

If a partial contralateral C7 nerve is transferred to a recipient injured nerve, results are not satisfactory. However, if an entire contralateral C7 nerve is used to repair two nerves, both recipient nerves show good recovery. These findings seem contradictory, as the above two methods use the same donor nerve, only the cutting method of the contralateral C7 nerve is different. To verify whether this can actually result in different repair effects, we divided rats with right total brachial plexus injury into three groups. In the entire root group, the entire contralateral C7 root was transected and transferred to the median nerve of the affected limb. In the posterior division group, only the posterior division of the contralateral C7 root was transected and transferred to the median nerve. In the entire root ＋ posterior division group, the entire contralateral C7 root was transected but only the posterior division was transferred to the median nerve. After neurectomy,the median nerve was repaired on the affected side in the three groups. At 8, 12, and 16 weeks postoperatively, electrophysiological examination showed that maximum amplitude, latency, muscle tetanic contraction force, and muscle fiber cross-sectional area of the flexor digitorum superficialis muscle were significantly better in the entire root and entire root ＋ posterior division groups than in the posterior division group. No significant difference was found between the entire root and entire root ＋ posterior division groups. Counts of myelinated axons in the median nerve were greater in the entire root group than in the entire root ＋ posterior division group, which were greater than the posterior division group. We conclude that for the same recipient nerve, harvesting of the entire contralateral C7 root achieved significantly better recovery than partial harvesting, even if only part of the entire root was used for transfer. This result indicates that the entire root should be used as a dono

关键词： nerve regeneration peripheral nerve injury brachial plexus injury avulsion injury contralateral C7 transfer nerve root entire root partial root median nerve ulnar nerve animal experiment neural regeneration