Verifiable Blockchain-Based Searchable Encryption with forward and backward privacy

Symmetric Searchable Encryption (SSE) is an ideal technology to secure searches. SSE is dedicated to improving data confidentiality without sacrificing the searchability of data. Currently, most SSE schemes work using a semihonest or curious cloud server model in which the search results are not absolutely trustworthy. Therefore, a verifiable SSE (VSSE) scheme is proposed to achieve data integrity verification. Although there are some solutions to the result verification problem, most of the schemes concentrate on a static environment and do not consider the issue of result verification in a dynamic environment. Therefore, this paper proposes a Verifiable Blockchain-Based Searchable Encryption with forward and backward privacy scheme (VBSEFB). First, VBSEFB supports local verification of the data returned by the cloud server in a dynamic environment. Second, our solution perfectly realizes forward and backward privacy and better guarantees data security than other methods. Finally, under the one-to-many model, the data owner's access control to data users is realized. A large number of experiments and evaluations prove the practicality of dynamically updating encrypted data.