计算机技术与发展2025，Vol.35Issue(7)：71-78,8.DOI:10.20165/j.cnki.ISSN1673-629X.2025.0074
一种去中心化密文属性基加密及审计方法
A Decentralized Ciphertext Attribute-based Encryption and Auditing Method
摘要
Abstract
To address issues in traditional cloud data access control schemes,where users cannot verify the integrity of data stored on cloud servers or perform arbitration without downloading the ciphertext data,and where the verification process relies on the trustworthiness of third-party agencies,we propose a decentralized ciphertext attribute-based encryption and auditing method(D-CPABEA).This method employs homomorphic signature technology,enabling users to verify the integrity of cloud data without downloading ciphertext data.A multi-attribute authority based on blockchain enables decentralized user key generation,effectively preventing unauthorized users and attribute authorities from colluding.By adopting an access control mechanism based on ciphertext attribute-based encryption,this method achieves dynamic access control over cloud data.Furthermore,the use of smart contracts on the blockchain eliminates dependency on trusted auditing agencies in the data integrity verification process of current cloud auditing schemes.Security analysis and experimental results demonstrate that the proposed method provides robust security and usability.关键词
去中心化/同态签名/云存储/完整性验证/访问控制Key words
decentralization/homomorphic signature/cloud storage/integrity verification/access control分类
信息技术与安全科学引用本文复制引用
唐杨,田达,唐寅,徐志鹏,朱柏魁..一种去中心化密文属性基加密及审计方法[J].计算机技术与发展,2025,35(7):71-78,8.基金项目
中国工程院战略研究与咨询项目(2022-XY-111) （2022-XY-111）
