首页|基于属性加密的联盟区块链数据共享方法

基于属性加密的联盟区块链数据共享方法

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在保证区块链内数据安全的前提下,数据共享的速度通常较慢,为减少数据共享所需时间,基于属性加密算法设计联盟区块链数据共享方法。构建分层访问树,在无密钥托管模式中完成对用户代理加密的分类,使用哈希函数简单处理分层模型;基于属性加密构造数据访问共享模型,定义数据库域值,设置系统公共参数,建立主密钥与公密钥,完成集中式的数据共享管理;设计区块链数据共享算法,依据公钥格式生成用户私钥,完成区块链内的数据共享。分别计算数据共享过程中安全索引、陷门生成、关键字搜索三个步骤的用时,由数据可知,在安全索引与关键字搜索时,属性加密算法的运算效率更高,在陷门生成过程中,属性加密算法的运算效率相对较高。该方法的数据共享总用时为 991 ms,共享时间更短,速度更快。
Data Sharing Method of Alliance Blockchain based on Attribute Encryption
On the premise of ensuring the data security in the blockchain,the speed of data sharing is usually slow.In order to reduce the time required for data sharing,the alliance blockchain data sharing method is designed based on attribute encryption algorithm.Build a hierarchical access tree,complete the classification of user agent encryption in the keyless hosting mode,and use the hash function to simply deal with the hierarchical model.Construct data access and sharing model based on attribute encryption,define database domain value,set system public parameters,establish master key and public key,and complete centralized data sharing management.Design the blockchain data sharing algorithm,generate the user's private key according to the public key format,and complete the data sharing in the blockchain.Calculate the time of security index,trap generation and keyword search in the process of data sharing.It can be seen from the data that the operation efficiency of attribute encryption algorithm is higher in the process of security index and keyword search,and the operation efficiency of attribute encryption algorithm is relatively higher in the process of trap generation.The total data sharing time of this method is 991ms,so the sharing time is shorter and the speed is faster.

attribute encryptionblockchain datadata sharingoptimization algorithmhierarchical accessaccess rights

朱丽丽

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金陵科技学院 软件工程学院,江苏 南京 211169

属性加密 区块链数据 数据共享 优化算法 分层访问 访问权限

江苏省现代教育技术智慧校园专项(2021)江苏省现代教育技术课题(2022)教育部产学合作协同育人项目(2022)江苏省现代教育技术智慧校园专项(2022)

2021-R-966132022-R-987822205031751159592022-R-107212

2024

武汉职业技术学院学报
武汉职业技术学院

武汉职业技术学院学报

影响因子:0.335
ISSN:1671-931X
年,卷(期):2024.23(1)
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