CP-ABE-Based Secure and Verifiable Data Deletion in Cloud

Cloud data, the ownership of which is separated from their administration, usually contain users’ private information, especially in fifth-generation mobile communication (5G) environment, because collecting data various smart devices inevitably containing personal information. If it not securely deleted time or result deletion cannot be verified after expiration, this will lead to serious issues, such as unauthorized access and privacy disclosure. Therefore, affects security cloud hinders development computing services seriously. In paper, we propose a novel secure verification (SDVC) scheme based on CP-ABE achieve fine-grained for data. Based idea policy CP-ABE, construct an attribute association tree implement fast revoking reencrypting key control deletion. Furthermore, build rule transposition algorithm generate random blocks combine overwriting technology with Merkle hash ciphertext validator, then used verify We prove SDVC under standard model correctness effectiveness through theoretical analysis ample simulation experiment results.