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A blockchain-based multisignature approach for supply chain governance:A use case from the Australian beef industry

Blockchain(Research and Applications) 2022年第4期3卷 33-43页

作者： Shoufeng Cao Marcus Foth Warwick Powell Thomas Miller Ming Li Queensland University of Technology Brisbane4000Australia BeefLedger Ltd. BrisbaneAustralia Fudan University Shanghai200437China China Electronics Standardization Institute Beijing101102China

This paper designed and implemented a blockchain-based multisignature approach to digitally transform supply chain governance in multi-tier food supply chains,particularly in a geographically dispersed beef supply *** exploratory case study was utilised to demonstrate the design,implementation,and evaluation of a blockchainbased multisignature approach that was deployed on the Smart Trade Networks(STN)Proof of Authority(PoA)blockchain system for data collection and validation in a beef supply chain *** multisignature approach was implemented with a use case to track a shipment of 92 cattle and meat products through key events from farm to food *** use-case deployment records approximately 6000 data points registered on the STN PoA blockchain *** real-case deployment illustrates the capability of the blockchain-based multisignature approach to digitally improve beef supply chain governance by enabling whole-of-chain transparency and trustworthy information sharing and supports supply chain professionals to have a better understanding of how to unlock blockchain potential for supply chain transformation.

关键词： Beef supply chain Supply chain governance Digital transformation Blockchain multisignature Multi-signing mechanism

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A Deletable and Modifiable Blockchain Scheme Based on Record Verification Trees and the multisignature Mechanism

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Computer Modeling in Engineering & Sciences 2021年第7期128卷 223-245页

作者： Daojun Han Jinyu Chen Lei Zhang Yatian Shen Yihua Gao Xueheng Wang Henan Key Laboratory of Big Data Analysis and Processing Henan UniversityKaifeng47500China Institute of Data and Knowledge Engineering Henan UniversityKaifeng47500China School of Computer and Information Engineering Henan UniversityKaifeng47500China Department of Network and Finance Agricultural Bank of China Limited Xuchang BranchXuchang461000China School of Software Pingdingshan UniversityPingdingshan467000China Department of Network and Finance Agricultural Bank of China Limited Nanyang BranchNanyang473000China

As one of the most valuable technologies,blockchains have received extensive attention from researchers and industry circles and are widely applied in various ***,data on a blockchain cannot be *** a result,it is impossible to clean invalid and sensitive data and correct erroneous ***,to a certain extent,hinders the application of blockchains in supply chains and Internet of *** address this problem,this study presents a deletable and modifiable blockchain scheme(DMBlockChain)based on record verification trees(RVTrees)and the multisignature scheme.(1)In this scheme,an RVTree structure is designed and added to the block *** RVTree can not only ensure that a record is true and valid but,owing to its unique binary structure,also verify whether modification and deletion requests are valid.(2)In DMBlockChain,the multisignature mechanism is also *** mechanism requires the stakeholders’signatures for each modification or deletion request and thus ensures that a record will not be modified arbitrarily.A user’s request is deemed valid only if it is dually verified by the RVTree and the multisignature *** analysis finds that DMBlockChain can provide a secure and valid means for modifying and deleting records in a block while ensuring the integrity of the block and that DMBlockChain can effectively save space in some scenarios that require frequent records modification.

关键词： Blockchain record verification trees multisignature DMBlockChain

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A novel multisignature scheme for a special verifier group against clerk and rogue-key attacks

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Journal of Zhejiang University-Science C(Computers and Electronics) 2010年第4期11卷 290-295页

作者： Jia-lun TSAI Tzong-chen WU Kuo-yu TSAI Department of Information Management National Taiwan University of Science and Technology Taiwan Information Security Center National Taiwan University of Science and Technology

The digital signature is a very important subject for network *** multiple signers and multiple verifiers,Xie and Yu(2004) pointed out that the multisignature scheme of Laih and Yen(1996) is vulnerable to a harmful *** attack can occur when a specified group of verifiers cooperate to forge a multisignature by secret key substitution following the leak of a secret key or by group public key adjustment during the process of renewing *** and Yu proposed an improvement of Laih and Yen's multisignature *** this paper,we show that Xie and Yu's scheme is vulnerable to clerk and rogue-key *** propose an improved multisignature scheme to resist such *** the proposed scheme,multiple signers can generate a multisignature for the message with the signers' secret keys,and the specified group of verifiers can cooperate to verify the validity of the multisignature with the signers' public keys and the verifiers' secret *** proposed scheme for a special verifier group not only has the advantages of Xie and Yu's scheme,but also is secure against clerk and rogue-key attacks.

关键词： multisignature Clerk attack Rogue-key attack Cryptosystem

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Sequential Aggregate Signatures and multisignatures in the Plain Public Key Model

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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

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Another ID-Based Proxy Signature Scheme and Its Extension

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Wuhan University Journal of Natural Sciences 2007年第1期12卷 33-36页

作者： ZHANG Jianhong1,2 , ZOU Wei3 1. College of Science, North China University of Technology, Beijing 100041,China 2. Institute of Software of Chinese Academy of Sciences /State Key Laboratory of Information Security, Beijing 100080, China 3. Institute of Computer Science and Technology, Peking University, Beijing 100871, China College of Science North China University of Technology Beijing China State Key Laboratory of Information Security Institute of Software of Chinese Academy of Sciences Beijing China Institute of Computer Science and Technology Peking University Beijing China

So fur, the security of many proxy signatures has seldom been considered in a formal way and most of them cannot satisfy nonepudiation. In this work, a novel ID-based （Identity-based） proxy signature scheme is proposed by combining the proxy signature with ID-based public cryptography, and they formalize the notion of security for ID-based proxy signature schemes. And show that the security of the proposed scheme is secure. Compured with other proxy signature schemes, it does not need a secure channel. Thus, it is particularly suitable for the unreliable network computation environment. Finally, they extend proposed scheme to a proxy multi-signature which has the following advantages （1） the size of proxy multi- signature is independent of the number of delegating users; （2） the computation cost of proxy multi-signature only need two Weil paring.

关键词： proxy signature multisignature security proof

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