… preservation. We provide the security analysis along with the simulation results to verify the
privacy preservation … attributes, we need to guarantee the privacy of both the attribute and the …

… A blockchain is a cryptographic distributed database and network transaction accounting
system. … Cryptography should be adopted to ensure the confidentiality of important data during …

: 元宇宙作为一个新兴的概念受到了产业界, 学术界, 媒体界及公众的广泛关注, 国内外众多公司
也纷纷在“元宇宙” 领域布局, 但布局的背后离不开强大的技术支持. 本文从技术维度深入剖析元…

… Through the creation of transactions, construction of blocks, legitimacy validation and link
of blocks a digital work blockchain transaction information storage structure was built, …

很少有研究人员研究过应该如何形成服务组织最受欢迎的道德领导力，本文解决了学术文献中的
这一知识空白。其研究目标有三个：（i）首先，识别并提取过去五年发表的有关服务道德的高影响…

… essential to guarantee the reliability of the data, the privacy of … CreditCoin:A privacy-preserving
blockchain-based incentive … Adaptive multimedia data forwarding for privacy preservation …

… the search efficiency of data on the medical blockchain and realize multi-condition query. …
are designed to ensure the legitimacy and accuracy of user access to medical blockchain data. …

… Firstly, the data of electricity was stored under-chain by Inter Planetary File System(IPFS),…
blockchain based on the multi-signature notary technology. Secondly,with ensuring privacy …

… blockchain traceability system integrating the HACCP system[J]. … A CP-ABE-based access
tree verification scheme was … to the chain, in order to ensure that the data was available to the …

… the key directions of future security research on blockchain. This paper is devoted to
providing useful theoretical support and reference for future blockchain researches. Key words …