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PUMD:a PU learning-based malicious domain detection framework

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Cybersecurity 2023年第1期6卷 90-111页

作者： Zhaoshan Fan Qing Wang Haoran Jiao junrong liu Zelin Cui Song liu Yuling liu Institute of Information Engineering Chinese Academy of SciencesBeijing 100093China School of Cyber Security University of Chinese Academy of SciencesBeijing 100049China

Domain name system(DNS),as one of the most critical internet infrastructure,has been abused by various cyber *** malicious domain detection capabilities are limited by insufficient credible label information,severe class imbalance,and incompact distribution of domain samples in different malicious *** paper proposes a malicious domain detection framework named PUMD,which innovatively introduces Positive and Unlabeled(PU)learning solution to solve the problem of insuffcient label information,adopts customized sample weight to improve the impact of class imbalance,and effectively constructs evidence features based on resource overlapping to reduce the intra-class distance of malicious ***,a feature selection strategy based on permutation importance and binning is proposed to screen the most informative detection ***,we conduct experiments on the open source real DNS traffic dataset provided by QI-ANXIN Technology Group to evaluate the PUMD framework's abil-ity to capture potential command and control(C&C)domains for malicious *** experimental results prove that PUMD can achieve the best detection performance under different label frequencies and class imbalance ratios.

关键词： Malicious domain detection Insufficient credible label information Class imbalance Incompact distribution PUlearning

A User-Centered Multi-space Collaborative Visual Analysis for Cyber Security

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Chinese Journal of Electronics 2018年第5期27卷 910-919页

作者： ZHONG Zengsheng ZHAO Ying SHI Ronghua SHENG Yingshuai liu junrong MENG Hua LIN Dan School of Information Science and Engineering Central South University Information Office Chongqing Technology and Business University Key Laboratory of Network Assessment Technology Institute of Information EngineeringChinese Academy of Sciences

Based on a university’s practice in upgrading its network management platform, presents a visual analytic system which integrates network topological space,IP space and network geographical space into a collaborative solution to help network administrators address difficulties in locating end user and troubleshooting. Throughout the development cycle, we worked alongside with users to clarify their actual demands and habitual operations through scenario application, interviews and a variety of evaluation. This user-centered approach guides us step by step to apply cyber security visualization and visual analytic technology to actual use.

关键词： Cyber security Campus network management Visual analytics User evaluation

Side channel attack of multiplication in GF(q) –application to secure RSA-CRT

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Science China(Information Sciences) 2019年第3期62卷 202-204页

作者： Sen XU Weija WANG Xiangjun LU Zheng GUO junrong liu Dawu GU Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai Institute for Advanced Communication and Data Science

Dear editor,In the field of side-channel attacks (SCAs), the security of both block ciphers and public key cryptosystems is widely studied after the seminal differential power analysis (DPA)[1]. The straightforward implementations of both types of cryptographic algorithms are vulnerable to SCAs. The former attack methods are based on a compari-

关键词： RSA Side channel attack of multiplication in GF application to secure RSA-CRT

Enhanced Side-Channel Leakage Detection Method by Considering Combinational Logic

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China Communications 2015年第6期12卷 1-10页

作者： liu junrong GUO Zheng GU Dawu YU Yu LU Haining GU Haihua BAO Sigang School of Electronic Information and Electrical Engineering Shanghai JiaoTong University Shanghai Viewsource Information Science & Technology Co. Ltd. Shanghai Huahong Integrated Circuit Co. Ltd.

In this paper,we propose a hybrid power model that includes the power consumption of not only the registers but also part of the combinational *** doing knownkey analysis with this hybrid model,power side-channel leakage caused by correct keys can be *** experiment,PRINTcipher and DES algorithms were chosen as analysis targets and combinational logic s-box unit was selected to build power *** analysis results showed the signal-to-noise ratio(SNR) power consumption increase of more than 20%after considering s-box's power consumption so that the information of keys can be obtained with just half number of power *** addition,the side channel-leakage detection capability of our method also shows better effectiveness that can identify the correct keys.

关键词： power analysis leakage detection combinational logic known-key analysis

A Combinational Power Analysis Method against Cryptographic Hardware

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China Communications 2015年第1期12卷 99-107页

作者： GUO Zheng GU Dawu LU Haining liu junrong XU Sen BAO Sigang GU Haihua School of Electronic Information and Electrical Engineering Shanghai JiaoTong University Shanghai Viewsource Information Science & Technology Co. Ltd. Shanghai Huahong Integrated Circuit Co. Ltd.

Power analysis is a non-invaslve attack against cryptographic hardware, which effectively exploits runtime power consumption characteristics of circuits. This paper proposes a new power model which combines Hamming Distance model and the model based on the template value of power consumption in combinational logic circuit. The new model can describe the power consumption characteristics of sequential logic circuits and those of combinational logic as well. The new model can be used to improve the existing power analysis methods and detect the information leakage of power consumption. Experimental results show that, compared to CPA（Correlation Power Analysis） method, our proposed attack which adopt the combinational model is more efficient in terms of the number of required power traces.

关键词： cryptographic hardware side channel attack power analysis combinational logic

To Construct High Level Secure Communication System： CTMI Is Not Enough

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China Communications 2018年第11期15卷 122-137页

作者： Sen Xu Xiangjun Lu Aidong Chen Haifeng Zhang Haihua Gu Dawu Gu Kaiyu Zhang Zheng Guo junrong liu Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China Department of Software Engineering Beijing Union University Beijing 100 101 China Wanda Internet Technology Group Shanghai 200127 China Beijing Smart-Chip Microelectronics Technology Co. Ltd. Beijing China

Public key cryptographic （PKC） algorithms, such as the RSA, elliptic curve digital signature algorithm （ECDSA） etc., are widely used in the secure communication sys- tems, such as OpenSSL, and a variety of in- formation security systems. If designer do not securely implement them, the secret key will be easily extracted by side-channel attacks （SCAs） or combinational SCA thus mitigat- ing the security of the entire communication system. Previous countermeasures of PKC im- plementations focused on the core part of the algorithms and ignored the modular inversion which is widely used in various PKC schemes. Many researchers believe that instead of straightforward implementation, constant time modular inversion （CTMI） is enough to resist the attack of simple power analysis combined with lattice analysis. However, we find that the CTMI security can be reduced to a hidden t-bit multiplier problem. Based on this feature, we firstly obtain Hamming weight of interme- diate data through side-channel leakage. Then, we propose a heuristic algorithm to solve the problem by revealing the secret （partial and full） base of CTMI. Comparing previous nec-essary input message for masking filtering, our procedure need not any information about the secret base of the inversion. To our knowl- edge, this is the first time for evaluating the practical security of CTM! and experimental results show the fact that CTMI is not enough for high-level secure communication systems.

关键词： information security side channelanalysis elliptic curve digital signature algo-rithm constant time modular inversion ham-ming weight leakage

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Science China(Information Sciences) 2018年第3期61卷 131-147页

作者： Sen XU Xiangjun LU Kaiyu ZHANG Yang LI Lei WANG Weijia WANG Haihua GU Zheng GUO junrong liu Dawu GU Department of Computer Science and Engineering Shanghai Jiao Tong University College of Computer Science and Technology Nanjing University of Aeronautics and Astronautics

A template attack, the most powerful side-channel attack methods, usually first builds the leakage profiles from a controlled profiling device, and then uses these profiles to recover the secret of the target device. It is based on the fact that the profiling device shares similar leakage characteristics with the target device. In this study, we focus on the similar operations in a single device and propose a new variant of the template attack, called the similar operation template attack(SOTA). SOTA builds the models on public variables(e.g., input/output) and recovers the values of the secret variables that leak similar to the public variables. SOTA’s advantage is that it can avoid the requirement of an additional profiling device. In this study, the proposed SOTA method is applied to a straightforward RSA-CRT implementation. Because the leakage is(almost) the same in similar operations, we reduce the security of RSA-CRT to a hidden multiplier problem(HMP) over GF(q), which can be solved byte-wise using our proposed heuristic algorithm. The effectiveness of our proposed method is verified as an entire prime recovery procedure in a practical leakage scenario.

关键词： side channel attack template attack RSA-CRT hidden number problem prime recovery

Identification of the BTA8 gene reveals the contribution of natural variation to tiller angle in rice

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Journal of Integrative Agriculture 2024年第8期23卷 2868-2871页

作者： junrong liu Xingyu Wang Jing Wang Junhua Ye Mengchen Zhang Qun Xu Yaolong Yang Xinghua Wei Baoyan Jia Yue Feng State Key Laboratory of Rice Biology and Breeding China National Rice Research InstituteHangzhou 310006China College of Agronomy Shenyang Agricultural UniversityShenyang 110866China National Nanfan Research Institute(Sanya) Chinese Academy of Agricultural SciencesSanya 572024China

Plant architecture is a collection of major agronomic traits that determines rice grain production,and it is mainly influenced by tillering,tiller angle,plant height and panicle morphology(Wang and Li 2006).Tiller angle is one of the critical components that determines rice plant architecture,which in turn influences grain yield mainly due to its large impact on plant density(Wang et al.2022).

关键词： angle panicle agronomic

Brittle culm 25, which encodes an UDP-xylose synthase, affects cell wall properties in rice

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The Crop Journal 2023年第3期11卷 733-743页

作者： Siliang Xu Mengchen Zhang Junhua Ye Dongxiu Hu Yuanyuan Zhang Zhen Li junrong liu Yanfei Sun Shan Wang Xiaoping Yuan Yue Feng Qun Xu Xinghua Wei Dali Zeng Yaolong Yang China National Center for Rice Improvement/State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhou 310006ZhejiangChina The Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province Zhejiang A&F UniversityHangzhou 311300ZhejiangChina

Because plant mechanical strength influences plant growth and development,the regulatory mechanisms underlying cell-wall synthesis deserve *** mutants are useful for such *** have identified a novel brittle culm 25(bc25)mutant with reduced growth and partial ***25 encodes an UDP-glucuronic acid decarboxylase involved in cellulose synthesis and belongs to the UXS family.A single-nucleotide mutation in BC25 accounts for its altered cell morphology and cellwall *** electron microscopy analysis showed that the thickness of the secondary cell wall was reduced in *** analysis revealed significant increases in content of rhamnose and arabinose but not of other monosaccharides,indicating that BC25 was involved in xylose synthesis with some level of functional *** assays suggested that BC25 functions with high activity to interconvert UDP-glucuronic acid(UDP-Glc A)and *** staining showed that BC25 was ubiquitously expressed with higher expression in culm,root and sheath,in agreement with that shown by quantitative real-time(q RT)-***-seq further suggested that BC25 is involved in sugar *** conclude that BC25 strongly influences rice cell wall formation.

关键词： Brittle culm Mechanical strength UDP-xylose Cell wall Rice