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An Efficient Method against side-channel attacks on ECC

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Wuhan University Journal of Natural Sciences 2006年第6期11卷 1573-1576页

作者： LIU Shuanggen HU Yupu XU Wensheng Key Laboratory of Computer Network and Information Security Ministry of Education Xidian University Xi＇an 710071 Shaanxi China College of Computer Information Engineering Jiangxi Normal University Nanchang 330022 Jiangxi China

side-channel attacks （SCA） may exploit leakage information to break cryptosystems. In this paper we present a new SCA resistant Elliptic Curve scalar multiplication algorithm. The proposed algorithm, builds a sequence of bit-strings representing the scalar k, characterized by the fact that all bit-strings are different from zero; this property will ensure a uniform computation behavior for the algorithm, and thus will make it secure against simple power analysis attacks （SPA）. With other randomization techniques, the proposed countermeasures do not penalize the computation time. The proposed scheme is more efficient than MOEller＇s one, its cost being about 5% to 10% smaller than MOEller＇s one.

关键词： side-channel attacks ECC scalar multiplication algorithm

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Dual-Voltage Single-Rail Dynamic DPA-Resistant Logic Based on Charge Sharing Mechanism

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Chinese Journal of Electronics 2017年第5期26卷 899-904页

作者： TANG Wenyi JIA Song WANG Yuan Institution of Microelectronics Peking University

Differential power analysis(DPA) has become a ma jor system security *** achieve high levels of security with low power and die area costs,a novel Dual-voltage single-rail dynamic logic(DSDL) design is *** proposed scheme can reduce power dissipation and obtain extremely well-balanced power *** charge sharing mechanism is used for voltage transfer in the internal nodes during the evaluation of the *** power supply voltages are used with positive feedback to speed up the evaluation process.A 4-bit micro Substitution box(SBOX) of the Advanced encryption standard(AES) algorithm has been implemented to verify the security of the proposed logic *** experimental results proved the security and the efficiency of the proposed DSDL,which can reduce power dissipation by up to 20% and occupies at most 83% of the silicon area when compared with previous state-of-the-art countermeasures.

关键词： DPA Charge sharing Three-phase logic family side-channel attacks

Memory leakage-resilient secret sharing schemes

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Science China(Information Sciences) 2015年第11期58卷 191-199页

作者： DAI ShuGuang WEI JinFeng ZHANG FangGuo School of Information Science and Technology Sun Yat-sen University Guangdong Key Laboratory of Information Security Technology Mathematics Department College of Arts and Sciences Maryville University of St.Louis

A secret sharing scheme is a method to share secrets among some shareholders such that the shared secrets can be recovered only by certain authorized sets, not by the unauthorized sets. However, in practice,attackers who corrupted an unauthorized set are often able to obtain some or even all of the uncorrupted shareholders’ memory information by a great variety of side channel attacks. Then, they can illegally obtain the partial information or even all of the shared secrets. Facing such attacks, all existing secret sharing schemes are no longer secure. In this paper, we investigate how to construct secure secret sharing schemes with the presence of memory leakage, we call them memory leakage-resilient secret sharing schemes(MLR-SS schemes).We present the formal definition of MLR-SS scheme and construct two MLR-SS schemes by combining the existing secret sharing schemes with physical unclonable functions(PUFs). With these two concrete examples,we are attempting to demonstrate the use of PUFs in constructing MLR-SS schemes.

关键词： secret sharing multi-secret sharing side-channel attacks physical unclonable functions(PUFs) memory leakage-resilient

The Cognition Is Not Enough:Another Look on Existing Interesting Points Chosen Methods

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Chinese Journal of Electronics 2017年第2期26卷 416-423页

作者： FAN Guangjun ZHOU Yongbin ZHANG Hailong FENG Dengguo State Key Laboratory of Computer Science Institute of SoftwareChinese Academy of Sciences State Key Laboratory of Information Security Institute of Information EngineeringChinese Academy of Sciences

For classical template attacks,many papers suggested a guideline of choosing interesting points which is still not *** to now,many different methods of choosing interesting points were ***,it is still unclear that which approach will lead to the best classification performance for template *** comprehensively evaluate and compare the classification performance of template attacks when using different methods of choosing interesting *** results show that the Correlation power analysis based method and the Sum of squared pairwise t-differences based method will lead to the best classification *** find that some methods of choosing interesting points provide the same results in the same ***,we correctly prove the guideline of choosing interesting points is correct by presenting a new way of conducting template attacks.

关键词： side-channel attacks Power analysis attacks Template attacks Interesting points

Transparency order versus confusion coefficient:a case study of NIST lightweight cryptography S‑Boxes

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Cybersecurity 2021年第1期4卷 541-560页

作者： Huizhong Li Guang Yang Jingdian Ming Yongbin Zhou Chengbin Jin Institute of Information Engineering Chinese Academy of SciencesBeijing 100093China School of Cyber Security University of Chinese Academy of SciencesBeijing 100049China School of Cyber Security Nanjing University of Science and TechnologyNanjing 210094China Department of Software Engineering and Software Evaluation Beijing Institute of Computer Technology and ApplicationBeijing 100039China

side-channel resistance is nowadays widely accepted as a crucial factor in deciding the security assurance level of cryptographic *** most cases,non-linear components(e.g.S-Boxes)of cryptographic algorithms will be chosen as primary targets of side-channel attacks(SCAs).In order to measure side-channel resistance of S-Boxes,three theoretical metrics are proposed and they are reVisited transparency order(VTO),confusion coefficients variance(CCV),and minimum confusion coefficient(MCC),***,the practical effectiveness of these metrics remains still *** the 4-bit and 8-bit S-Boxes used in NIST Lightweight Cryptography candidates as concrete examples,this paper takes a comprehensive study of the applicability of these *** of all,we empirically investigate the relations among three metrics for targeted S-boxes,and find that CCV is almost linearly correlated with VTO,while MCC is inconsistent with the other ***,in order to verify which metric is more effective in which scenarios,we perform simulated and practical experiments on nine 4-bit S-Boxes under the nonprofiled attacks and profiled attacks,*** experiments show that for quantifying side-channel resistance of S-Boxes under non-profiled attacks,VTO and CCV are more reliable while MCC *** also obtain an interesting observation that none of these three metrics is suitable for measuring the resistance of S-Boxes against profiled ***,we try to verify whether these metrics can be applied to compare the resistance of S-Boxes with different ***,all of them are invalid in this scenario.

关键词： side-channel attacks NIST lightweight cryptography S-Boxes Transparency order Confusion coefficient

A Combined Countermeasure Against side-channel and Fault Attack with Threshold Implementation Technique

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Chinese Journal of Electronics 2023年第2期32卷 199-208页

作者： JIAO Zhipeng CHEN Hua FENG Jingyi KUANG Xiaoyun YANG Yiwei LI Haoyuan FAN Limin Trusted Computing and Information Assurance Laboratory Institute of SoftwareChinese Academy of Sciences University of Chinese Academy of Sciences Electric Power Research Institute China Southern Power Grid

side-channel attack(SCA) and fault attack(FA) are two classical physical attacks against cryptographic implementation. In order to resist them, we present a combined countermeasure scheme which can resist both SCA and FA. The scheme combines threshold implementation and duplication-based exchange techniques. The exchange technique can confuse the fault propagation path and randomize the faulty values. The threshold implementation technique can ensure a provable security against SCA. Moreover, it can also help to resist the FA by its incomplete property and random numbers. Compared with other methods, the proposed scheme has simple structure, which can be easily implemented in hardware and result in a low implementation cost. Finally, we present a detailed design for the block cipher light encryption device(LED) and implement *** hardware cost evaluation shows our scheme has the minimum overhead factor.

关键词： Resistance Ciphers Costs Resists side-channel attacks Light emitting diodes Hardware

A Time-Area-Efficient and Compact ECSM Processor over GF(p)

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Chinese Journal of Electronics 2023年第6期32卷 1355-1366页

作者： HE Shiyang LI Hui LI Qingwen LI Fenghua Xidian University Chinese Academy of Sciences

The elliptic curve scalar multiplication(ECSM) is the core of elliptic curve cryptography(ECC),which directly determines the performance of ECC. In this paper, a novel time-area-efficient and compact design of a 256-bit ECSM processor over GF(p) for the resourceconstrained device is proposed, where p can be selected flexibly according to the application scenario. A compact and efficient 256-bit modular adder/subtractor and an improved 256-bit Montgomery multiplier are designed. We select Jacobian coordinates for point doubling and mixed Jacobian-affine coordinates for point addition. We have improved the binary expansion algorithm to reduce 75%of the point addition operations. The clock consumption of each module in this architecture is constant, which can effectively resist side-channel attacks. Reuse technology is adopted in this paper to make the overall architecture more compact and efficient. The design architecture is implemented on Xilinx Kintex-7(XC7K325T-2FFG900I),consuming 1439 slices, 2 DSPs, and 2 BRAMs. It takes about 7.9 ms at the frequency of 222.2 MHz and 1763k clock cycles to complete once 256-bit ECSM operation over GF(p).

关键词： Jacobian matrices Performance evaluation Elliptic curves side-channel attacks Resists Logic gates Elliptic curve cryptography

Research on Microarchitectural Cache attacks

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Research on Microarchitectural Cache Attacks

(Full) Leakage resilience of Fiat-Shamir signatures over lattices

作者： Yao Lu Kaiyan Chen Yinlong Wang Simulation Center of Ordnance Engineering College Army Engineering University

This paper summarizes the basic concepts and development process of cache sidechannel attack,analyses three basic methods（Evict and Time,Prime and Probe,Flush and Reload） from four aspects:Attack conditions,realization process,applicability,and characteristics,then I expound how to apply side-channel attack methods on CPU vulnerability.

关键词： side-channel attacks Cache CPU vulnerability Microarchitecture

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Frontiers of Computer Science 2022年第5期16卷 181-191页

作者： Yuejun LIU Yongbin ZHOU Rui ZHANG Yang TAO State Key Laboratory of Information Security Institute of Information EngineeringChinese Academy of SciencesBeijing 100093China School of Cyber Security University of Chinese Academy of SciencesBeijing 100049China

Fiat-Shamir is a mainstream construction paradigm of lattice-based signature *** its theoretical security is well-studied,its implementation security in the presence of leakage is a relatively under-explored ***,even some side-channel attacks on lattice-based Fiat-Shamir signature(FS-Sig)schemes have been proposed since 2016,little work on the leakage resilience of these schemes *** still,the proof idea of the leakage resilience of FS-Sig schemes based on traditional number-theoretic assumptions does not apply to most lattice-based FS-Sig *** this,we propose a framework to construct fully leakage resilient lattice-based FS-Sig schemes in the bounded memory leakage(BML)*** framework consists of two *** first part shows how to construct leakage resilient FS-Sig schemes in BML model from leakage resilient versions of nonlossy or lossy identification schemes,which can be instantiated based on lattice *** second part shows how to construct fully leakage resilient FS-Sig schemes based on leakage resilient ones together with a new property called state *** show almost all lattice-based FS-Sig schemes have this *** a concrete application of our fundamental framework,we apply it to existing lattice-based FS-Sig schemes and provide analysis results of their security in the leakage setting.

关键词： leakage resilience lattice-based signatures FiatShamir paradigm side-channel attacks post-quantum cryptography

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