An information processing method, search method, apparatus and user terminal server

The present invention discloses a method for information processing, retrieval method, apparatus, user terminal and the server, the search method comprising: receiving a first user terminal transmits a second user terminal for storing the second address information of the user of the end user's encrypted files; from on the cloud server and acquires the address information corresponding to the confidential information, private information, and non-trusted servers on the shared key; obtaining address information of a file to be accessed and the confidential information by retrieving non-private information; acquiring the cloud to be accessed from a file server first address information corresponding to the encrypted file; obtaining a file to be accessed by the shared key to decrypt the first encrypted file. Since the present invention is introduced during the information retrieval process trust server, thereby enabling the user terminal to upload the user terminal to a third party cloud encrypted file server can be trusted to retrieve, in the user file security to ensure the same time, sufficiently the use of performance cloud servers.