Research On Authenticatable Dynamic Searchable Encryption

Searchable encryption technology saves the user's local storage resources and sim-plifies the user's search operation.We adds the deletion function to the searchable encryption scheme.When server receives the deletion request submitted by the user,the server deletes the data that the user wants to delete.However,when an illegal user gains access to the cloud server,they can pretend to be legal users to delete the data in the server.In order to deal with this problem,we introduces the idea of authentication in searchable encryption scheme with deletion.First,user who stores the data gener-ates a certification mark on the data,and then the user stores the certification mark and the data in the cloud server in cipher-text.When a user sends a deletion request,the server uses the certification mark to authenticate the user who sent the deletion request,effectively preventing malicious deletion.According to the above idea,we pro-poses two different searchable encryption models with authentication deletion function based the file ID and the file plaintext respectively.At the same time,the ID-baseed and plaintext-based authentication deletion searchable encryption scheme can be real-ized by using the bilinear pairings,and we also analyze the correctness and security of the two schemes.Finally,the two schemes can be authenticated and deleted without affecting the user's search function,and the security of the scheme reaches IND-CPA.