Numerous Public Cloud Storage Solutions For Data Secure And Traceable

Abstract

Controlling data access in public cloud storage systems is a difficult topic. The Cipher text-Policy Attribute-Based Encryption has emerged as a promising approach for cloud storage data access control that is flexible, fine-grained, and safe. When using a Cipher Text-Policy Attribute-Based Encryption approach in a large-scale cloud storage system, the single attribute authority must handle the time-consuming user legitimacy verification and secret key distribution, creating a single-point performance bottleneck. Users may be kept in the waiting queue for an extended period of time in order to obtain their secret keys, resulting in low system efficiency. To disperse the load of user validity verification, our architecture employs a number of attribute authorities. Meanwhile, in our strategy, a CA (Central Authority) is created to create secret keys for valid users.  To strengthen security, we additionally provide an auditing tool for discovering which AA (Attribute Authority) performed the validity verification operation incorrectly or maliciously. According to our findings, our approach not only meets security criteria but also greatly improves key generation performance.