逐次作業証明(PoSW)に関するサーベイ:開発、セキュリティ分析、および応用展望
Jingjing Zhang1, Yinxia Ran1,2, Xiuju Huang3
1School of Computer and Cyber Sciences, Communication University of China, Dingfuzhuang East Street, Beijing 100024, China.
Abstract:
Proof of sequential work (PoSW), as an emerging cryptographic primitive, is designed to provide a verifiable method for proving that a computational process has incurred a real and continuous expenditure of time. This characteristic demonstrates its significant application potential in decentralized systems, time-stamping services, and trusted computing. This paper systematically reviews and discusses the developmental trajectory, typical variants, potential attacks, and diverse applications of PoSW. Concurrently, it places a special emphasis on analyzing the evolutionary path and application scenarios of its important special case-the verifiable delay function (VDF) aiming to provide a comprehensive reference for research and practice in related fields.
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