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A provable-secure and practical two-party distributed signing protocol for SM2 signature algorithm

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Frontiers of Computer Science 2020年第3期14卷 203-215页

作者： Yudi zhang Debiao HE mingwu zhang Kim-Kwang Raymond CHOO Key Laboratory of Aerospace Information Security and Trusted Computing of Ministry of Education School of Cyber Science and EngineeringWuhan UniversityWuhan 430072China School of Computer Sciences Hubei University of TechnologyWuhan 430068China Department of Information Systems and Cyber Security and Department of Electrical and Computer Engineering University of Texas at San AntonioSan AntonioTX 78249USA

Mobile devices are widely used for data access,communications and ***,storing a private key for signature and other cryptographic usage on a single mobile device can be challenging,due to its computational ***,a number of(t,n)threshold secret sharing schemes designed to minimize private key from leakage have been proposed in the ***,existing schemes generally suffer from key reconstruction *** this paper,we propose an efficient and secure two-party distributed signing protocol for the SM2 signature *** latter has been mandated by the Chinese government for all electronic commerce *** proposed protocol separates the private key to storage on two devices and can generate a valid signature without the need to reconstruct the entire private *** prove that our protocol is secure under nonstandard ***,we implement our protocol using MIRACL Cryptographic SDK to demonstrate that the protocol can be deployed in practice to prevent key disclosure.

关键词： SM2 signature two-party signing wireless environment provable security threshold secret sharing

Secure searchable public key encryption against insider keyword guessing attacks from indistinguishability obfuscation

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Science China(Information Sciences) 2018年第3期61卷 228-230页

作者： Lixue SUN Chunxiang XU mingwu zhang Kefei CHEN Hongwei LI Center for Cyber Security School of Computer Science and EngineeringUniversity of Electronic Science and Technology of China School of Computer Science Hubei University of Technology School of Science Hangzhou Normal University Laboratory of Science and Technology on Communication Security

Public key encryption with keyword search(PEKS)enables one to search encrypted data containing some keyword without decrypting the data in public key *** et al.[1]introduced the notion of PEKS,but later Byun et al.[2]showed the scheme in[1]is vulnerable to the outsider/insider keyword guessing attacks(KGA).Many previous PEKS studies have tackled the

关键词： SKS IND PKI MAC SKR Mac PKR

A Novel Construction of Updatable Identity-Based Hash Proof System and Its Applications

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Chinese Journal of Electronics 2023年第3期32卷 564-576页

作者： QIAO Zirui ZHOU Yanwei YANG Bo zhang Wenzheng zhang mingwu School of Computer Science Shaanxi Normal University State Key Laboratory of Cryptology Science and Technology on Communication Security Laboratory Henan Key Laboratory of Network Cryptography Technology School of Computere Hubei University of Technology

In the previous works, to further provide the continuous leakage resilience for the identity-based encryption scheme, a new cryptography primitive, called updatable identity-based hash proof system(U-IB-HPS),was proposed. However, most of the existing constructions have some deficiencies, they either do not have perfect key update function or the corresponding security with tight reduction relies on a non-static complexity assumption. To address the above problems, a new construction of U-IB-HPS is created, and the corresponding security of our system is proved based on the static complexity assumption. Also, the corresponding comparisons and analysis of performances show that our proposal not only achieves the perfect key update function and the anonymity, but also has the tight security reduction. In additional, our proposal achieves the same computational efficiency as other previous systems. To further illustrate the practical function of U-IB-HPS, a generic method of non-interactive data authorization protocol with continuous leakage resilience is designed by employing U-IB-HPS as an underlying tool, which can provide continuous leakage-resilient data authorization function for the cloud computing. Hence, the application field of U-IB-HPS is further extended through our study.

关键词： Authorization Cloud computing Protocols Identity-based encryption Complexity theory Computational efficiency Proposals

Analytical Models for Velocity Distributions in Compound Channels with Emerged and Submerged Vegetated Floodplains

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Chinese Geographical Science 2017年第4期27卷 577-588页

作者： zhang mingwu JIANG Chunbo HUANG Heqing Gerald Charles NANSON CHEN Zhengbing YAO Wenyi Yellow River Institute of Hydraulic Research Yellow River Conservancy Commission State Key Laboratory of Hydroscience and Engineering Department of HydraulicsTsinghua University Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences School of Earth and Environmental Sciences University of Wollongong

The lateral distributions of depth-averaged velocity in open compound channels with emerged and submerged vegetated floodplains were analyzed based on the analytical solution of the depth-integrated Reynolds-Averaged Navier-Stokes equation with a term to account for the effects of *** three cases considered for open channels were two-stage rectangular channel with emerged vegetated floodplain,rectangular channel with submerged vegetated corner,and two-stage rectangular channel with submerged vegetated floodplain,*** predict the depth-averaged velocity with submerged vegetated floodplains,we proposed a new method based on a two-layer approach where flow above and through the vegetation layer was described ***,further experiments in the two-stage rectangular channel with submerged vegetated floodplain were carried out to verify the *** analytical solutions of the cases indicated that the corresponding analytical depth-averaged velocity distributions agree well with the simulated and experimental *** analytical solutions of the cases with theoretical foundation and without programming calculation were reasonable and applicable,which were more convenient than numerical *** analytical solutions provided a way for future researches to solve the problems of submerged vegetation and discontinuous phenomenon of depth-averaged velocity at the stage point for compound *** the hydraulics of flow in compound channels with vegetated floodplains is very important for supporting the management of fluvial processes.

关键词： compound channel velocity distribution vegetated floodplain two-stage rectangular channel analytical solution

Effects of electron correlation and the Breit interaction on one- and two-electron one-photon transitions in double K hole states of He-like ions(10 ≤ Z ≤ 47)

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Chinese Physics B 2020年第3期29卷 148-155页

作者： Xiaobin Ding Cunqiang Wu Mingxin Cao Denghong zhang mingwu zhang Yingli Xue Deyang Yu Chenzhong Dong Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province College of Physics and Electronic EngineeringNorthwest Normal UniversityLanzhou 730070China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China

The x-ray energies and transition rates associated with single and double electron radiative transitions from the double K hole state 2s2p to the 1s2s and 1s^2 configurations of 11 selected He-like ions(10 ≤ Z ≤ 47) are calculated using the fully relativistic multi-configuration Dirac–Fock method(MCDF). An appropriate electron correlation model is constructed with the aid of the active space method, which allows the electron correlation effects to be studied efficiently. The contributions of the electron correlation and the Breit interaction to the transition properties are analyzed in detail. It is found that the two-electron one-photon(TEOP) transition is correlation sensitive. The Breit interaction and electron correlation both contribute significantly to the radiative transition properties of the double K hole state of the He-like ions. Good agreement between the present calculation and previous work is achieved. The calculated data will be helpful to future investigations on double K hole decay processes of He-like ions.

关键词： electron correlation multi-configuration Dirac–Fock method(MCDF) double K hole state two-electron one-photon(TEOP)transition

Calculations of the Kαα Lines from K-shell Hollow Argon Atoms

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IMP & HIRFL Annual Report 2019年第1期 76-77页

作者： zhang mingwu Yu Deyang 不详

Two-electron-one-photon(TEOP)transition[1]is an ultrafast transition(~fs)of two correlated *** this transition,coupled electron pair jumps simultaneously into the same inner hollow shell both changed their principal q... 详细信息

关键词： transition inner quantum

The Lost-Wax Process in the Pre-Qin Period: A Bronze Appendage with Hollow Snake Patterns from the Tomb of Duke Ning of Xu

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Chinese Annals of History of Science and Technology 2017年第1期1卷 98-115页

作者： Li Yuanzhi zhang Fangtao Tan Derui Hua Jueming zhang mingwu LüXin Bureau of Cultural Affairs Ye CountyHenan Province 467200 Shanghai Museum Shanghai 200003 Institute for the History of Natural Sciences Beijing 100190 University of Chinese Academy of Sciences Beijing 100049China 不详

This paper discusses the most recent case of the lost-wax process,namely,a bronze appendage with hollow snake patterns excavated in 2002 at the tomb of Duke Ning of Xu(許公寧)(a state in the Spring and Autumn period)in Ye County,Henan *** physical and chemical analyses indicate that this artifact was cast as a whole in 547 BCE or slightly later in a high tin bronze alloy using the lost-wax *** traces of cast joints or soldering were *** research provides further proof that the lost-wax process was a significant technical development achieved by casters in the Pre-Qin period.

关键词： lost-wax process tomb of Duke Ning of Xu bronze appendage snake patterns

Can the narrowing of the Lower Yellow River by regulation result in non-siltation and even channel scouring？

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Journal of Geographical Sciences 2016年第9期26卷 1337-1348页

作者： SUN Zanying WANG Wanzhan LI Yong zhang mingwu SHANG Hongxia zhang Fangxiu Yellow River Institute of Hydraulic Research Zhengzhou 450003 China

This study considered whether the narrowing of the upper （broad and wandering） reaches of the Lower Yellow River could result in a reduction in sedimentation and even an increase in channel erosion in both the upper and the lower （narrow and meandering） reaches. Analysis of field data and numerical modeling results both justify the proposal to narrow the channel. A positive correlation was found between channel eroded-area and the channel width. Therefore narrowing under conditions of low flow will reduce the amount of erosion in the reach, which, in turn, will reduce the amount of sediment transported into the lower channel. This will reduce the amount of siltation in the lower reaches of the river. However, narrowing under conditions of high flow with a low concentration of sediment will reduce both the extent of flood attenuation along the narrowed channel and the amount of lateral channel bank collapse, which results in increased flows and less sedimentation in the lower channel, leading to increased erosion. When flows with a high concentration of sediment are released from the Xiaolangdi Reservoir, both the lower narrow channel and the upper channel can transport a large amount of the sediment load. It is concluded that the narrowing of the upper broad channel will result in a reduction in sedimentation, or even in channel erosion, in both the upper and the lower channels if the reservoir is operated such that the volume of sediment added during low flows is balanced by the volume eroded during high flows with a low concentration of sediment.

关键词： channel narrowing sediment release sediment transport capacity Lower Yellow River, XiaolangdiReservoir

刘岳云的“西学中源”论及其构建的科学知识体系——《格物中法》初探

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自然科学史研究 2012年第2期31卷 152-166页

作者：张明悟中国科学院自然科学史研究所北京100190

《格物中法》是晚清"西学中源"说的一部集大成之作。作者刘岳云从中国古代典籍中搜集了大量有关科学及技术的记载和论述,把它们组织起来,建构了一套完整的中国式科学知识体系,从而论证"西学中源"说,并与西学一较短长。文章分析了《格物... 详细信息

《格物中法》是晚清"西学中源"说的一部集大成之作。作者刘岳云从中国古代典籍中搜集了大量有关科学及技术的记载和论述,把它们组织起来,建构了一套完整的中国式科学知识体系,从而论证"西学中源"说,并与西学一较短长。文章分析了《格物中法》的选材和构架,并发掘其在中国科学史研究上的意义。

关键词：《格物中法》西学中源刘岳云