检索结果-南通市图书馆

Delegable zk-SNARKs with proxies

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Computer Science 2024年第5期18卷 201-217页

作者： Jinrui SHA shengli liu School of Cyber Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Cryptology Beijing 100878China Department of Computer Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

In this paper,we propose the concept of delegable zero knowledge succinct non-interactive arguments of knowledge(zk-SNARKs).The delegable zk-SNARKKis parameterized by(u,k,k',k").The delegable property of zk-SNARKs allows the prover to delegate its proving ability toμ*** k honest proxies are able to generate the correct proof for a statement,but the collusion of less than k proxies does not obtain information about the witness of the *** also define k'-soundness and k"-zero knowledge by taking into consider of *** propose a construction of(μ,2t+1,t,t)-delegable zk-SNARK for the NPC language of arithmetic circuit *** delegable zk-SNARK stems from Groth's zk-SNARK scheme(Groth16).We take advantage of the additive and multiplicative properties of polynomial-based secret sharing schemes to achieve delegation for *** secret sharing scheme works well with the pairing groups so that the nice succinct properties of Groth's zk-SNARK scheme are preserved,while augmenting the delegable property and keeping soundness and zero-knowledge in the scenario of multi-proxies.

关键词： szk-SNARKs secret sharing delegation bilinear groups

[EMIM][DCA] as an entrainer for the extractive distillation of methanol-ethanol-water system

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Green Energy & Environment 2021年第3期6卷 363-370页

作者： shengli liu Zhenhang Wang Ruisong Zhu Zhigang Lei Jiqin Zhu State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBox 266Beijing100029China

The ionic liquid(IL)1-ethyl-3-methylimidazolium dicyanamide([EMIM][DCA])was selected as an appropriate entrainer for the extractive distillation of the methanol-ethanol-water *** COSMO-RS model was applied to screen out the appropriate solvents considering selectivity and solvent capacity *** vapor-liquid equilibrium(VLE)experiments for the two systems of methanol-water and ethanol-water with different amounts of[EMIM][DCA]added were conducted at 101.3 *** experimental data showed that[EMIM][DCA]exhibits an obvious salting effect for the methanol(or ethanol)-water mixture and eliminates the azeotropic point of ***,the predicted values by UNIFAC-Lei model coincide well with experimental *** separation mechanism was further explained in combination with surface charge density distribution(σ-profiles),excess enthalpy(HE),and binding *** addition,the flow charts were designed to evaluate the improvement of energy consumption with[EMIM][DCA]as the entrainer when compared to ethylene glycol(EG).The simulation results demonstrated that[EMIM][DCA]is more energy efficient than EG.

关键词： Ionic liquids(ILs) Separation mechanism COSMO-RS model UNIFAC-Lei model Extractive distillation

Sequential Aggregate Signatures and Multisignatures in the Plain Public Key Model

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2015年第2期24卷 338-342页

作者： ZHOU Xuhua LAI Junzuo liu shengli CHEN Kefei School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Department of Computer Science Jinan University School of Science Hangzhou Normal University

At Eurocrypt’06, Lu et al. presented the first Sequential aggregate signature(SAS) provably secure without random oracles. The drawback of their scheme is that users need long public keys and the security model makes the Knowledge of secure key(KOSK) assumption. We present the first SAS scheme, which the user needs short public keys and the security is proven without random oracles, in the plain public key model. We also present the first Multisignature(MS) scheme in the plain public key model, which the security is proven without random oracles.

关键词： Sequential aggregate signature Multisignature Plain public key model Standard model Computational Diffie-Hellman assumption

Pirate decoder for the broadcast encryption schemes from Crypto 2005

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science in China(Series F) 2007年第3期50卷 318-323页

作者： WENG Jian liu shengli CHEN KeFei Department of Computer Science and Engineering Shanghai Jiao Tong University Shanghai 200240China

In Crypto＇05, Boneh et al. presented two broadcast encryption schemes. Their work has exciting achievements： the header （also called ciphertexts） and the private keys are of constant size. In their paper, they give an open question to construct a traitor tracing algorithm for their broadcast encryption schemes, and combine the two systems to obtain an efficient trace-and-revoke system. In this paper, we give a negative answer to their open question. More precisely, we show that three or more insider users are able to collude to forge a valid private key for pirate decoding against their schemes. Moreover, we prove that there exists no traitor tracing algorithm to identify the colluders. Our pirate decoding can also similarly be applied to Lee et al.＇s broadcast encryption schemes in ISPEC＇06.

关键词： broadcast encryption pirate decoder traitor tracing

Authentication Codes from-ASU Hash Functions with Partially Secret Keys

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2014年第4期23卷 790-793页

作者： liu shengli TILBORG Henk van WENG Jian CHEN Kefei Deptartment of Computer Science and Engineering Shanghai Jiao Tong University Deptartment of Mathematics and Computer Science Eindhoven University of Technology Department of Computer Science Jinan University School of Science Hangzhou Normal University

An authentication code can be constructed with a family of-Almost strong universal(-ASU) hash functions, with the index of hash functions as the authentication key. This paper considers the performance of authentication codes from-ASU, when the authentication key is only partially secret. We show how to apply the result to privacy amplification against active attacks in the scenario of two independent partially secret strings shared between a sender and a receiver.

关键词： Information theory Authentication code Privacy amplification Unconditional security

Methyl chloride dehydration with ionic liquid based on COSMO-RS model

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Green Energy & Environment 2021年第3期6卷 413-421页

作者： Zhenhang Wang shengli liu Yifan Jiang Zhigang Lei Jie Zhang Ruisong Zhu Jiwen Ren State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBox 266Beijing100029China Zhejiang Cenway Materials Co. Ltd.JiaxingZhejiang314000China

A suitable ionic liquid for methyl chloride drying experiment was screened out from 210 ionic liquids by COSMO-RS ***,the experimental mechanism of ionic liquids drying is further explained by the COSMO-RS model,and it is further confirmed by analyzing the binding *** solubility of methyl chloride in[EMIM][BF4]and TEG and[EMIM][BF4]+H2O was completed,and the experimental results well proved the reliability of the UNIFAC-Lei *** unknown interaction parameters were obtained through the solubility data of this work and the experimental data in the *** methyl chloride drying experiment was completed in the laboratory,and the water content of the methyl chloride can be reduced to below 200 *** simulation of the methyl chloride drying process using[EMIM][BF4]or TEG as absorbents was carried out by ASPEN software on an industrial *** final simulation results show that the[EMIM][BF4]drying process has lower energy consumption and better drying effect.

关键词： Ionic liquids(ILs) COSMO-RS model UNIFAC-Lei model Gas drying Process simulation

Identification of candidate gene for resistance to broomrape(Orobanche cumana) in sunflower by BSA-seq

在线全文

学校读者我要写书评

暂无评论

Oil Crop Science 2020年第2期5卷 80-84页

作者： shengli liu Peng Wang Yantao liu Peizheng Wang Xinjiang Academy of Agricultural Reclamation Science ShiheziChina Hainan Tropical Ocean University SanyaChina

Broomrape(Orobanche cumana)is one of the most important parasitic plants that drastically reduces sunflower *** majority of existing resistance varieties have become insufficient for crop *** for broomrape resistance is regarded as the most effective and environmentally friendly control *** this paper,mapping of a resistance gene for broomrape races E was performed in a recombinant inbred line population by bulk segregate analyses(BSA)combined with genotyping by-sequencing *** QTL with resistance candidate genes was mapped on 5 kb interval location from 157,393,001 to 157,850,000 on chromosome 3,the other QTL was located at 5,000 bp interval location from 173,910,001 to 173,915,000 on chromosome *** region on candidate interval of chromosome 3 revealed 6 genes with potential resistance for broomrape including transcription factor MYB1 R1,Phylloplanin,histone-lysine N-methyltransferase,methylglutaconyl-CoA hydratase,fasciclin-like arabinogalactan protein and fatty acid *** resistant genes on candidate interval of chromosome 14 were discovered with potential resistance for broomrape,which were ABC transporter C family member and Ethylene-responsive transcription *** precise locations would be valuable for selecting resistant genotypes in future.

关键词： Sunflower Broomrape BSA Genotyping by-sequencing

On the Historiographical Reform of General History of Chinese Science and Technologyin the Post-Needham Era

在线全文

学校读者我要写书评

暂无评论

Contemporary Social Sciences 2016年第2期1卷 145-155页

作者： liu shengli Research Institute of Philosophy and Culture Sichuan Academy of Social Sciences

The research of General History of Chinese Science and Technology(GHCST) has so far failed to transcend the"positivist history", a program of historiography initiated by Joseph Needham. The historians after Needham have made important explorations on the historiographical reform of GHCST. However, nearly all of these explorations are still the methodological reflections of the positivist history perspective, failing to reflect metaphysically on such historiographical presuppositions as views of science, technology and history, which means they have failed to break away from the positivist history perspective. To go beyond the limitations of positivist history calls for the introduction of the perspective of phenomenology of body and reflecting on and criticizing the historiographical presuppositions of positivist history on a metaphysical level. Such reflection will lead us to a new program of historiography in the post-Needham era, that is"phenomenal history"or the GHCST from the perspective of the phenomenology of body.

关键词： GHCST J. Needham program of historiography positivist history phenomenal history

An experimental study on variation of thermal fields during the deformation of a compressive en echelon fault set

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2007年第3期17卷 298-304页

作者： liu Peixun, MA Jin, liu Liqiang, MA shengli and CHEN Guoqiang (Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China) [a]Laboratory of Earthquake Dynamics Institute of Geology China Earthquake Administration Beijing China

The temperature variations during deformation of a compressive en echelon fault set in a rock sample were measured by a surface measurement system with multi-point platinum resistance thermometers and an infrared thermal image system. The measurements obtained by the two systems were in agreement with each other, indicating a relationship between temporal-spatial variations of the thermal field and changes of stress and strain. At varied structural positions of the rock sample, the rising of the temperature was different, implying distinct stress distributions at these positions. In the experiment, the deformation process of the sample included three stages: elastic deformation, stick-slip, and rupture. Correspondingly, the variation process of temperature had also three stages, each of which had its own temperature rising profile. And the thermal radiation field showed a similar process. These phenomena mean that the dominant mechanisms of temperature rising in all stages of deformation are different. Experimental results provide a physical basis for the study of current fault activities by using data of satellite infrared images.

关键词： en echelon fault set stick-slip thermal infrared radiation temperature mechanism of temperatnre rising.