User Privacy Protection Scheme Based on Verifiable Outsourcing Attribute-Based Encryption

Given the rapid development of cloud computing and storage technology, a growing number enterprises individuals use services to save data or back up data. In services, although attribute-based encryption can protect users’ security, computational cost key generation, encryption, decryption linearly increases with complexity access strategies, which becomes more critical for resource-constrained users. Therefore, this paper proposes verifiable scheme fully outsourced ciphertext policy. The simultaneously realize functions outsourcing verify correctness calculation results. This effectively reduce burden system. security verifiability are indicated proved random oracle model. experimental results show that has advantages function efficiency compared other schemes. research have theoretical practical significance.