Information processing method and apparatus, information retrieval method and apparatus, user terminal and server

• Main Authors: WANG CHAN, HUANG JIEJING, WU HUANGWEI
• Format: Patent
• Language: Chinese; English
• Published: 24.09.2014
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses an information processing method and apparatus, an information retrieval method and apparatus, a user terminal and a server. The retrieval method comprises: a first user terminal receiving address information of an encryption file sent by a second user terminal for storing a user of the second user terminal; obtaining privacy information corresponding to the address information, non-privacy information and shared secret key from a cloud server and a trust server; obtaining address information of a file to be accessed through retrieving the privacy information of the non-privacy information; obtaining a first encryption file corresponding to the address information of the file to be accessed from the cloud server; and obtaining the file to be accessed by decrypting the first encryption file through the shared secret key. According to the invention, since a trust server is introduced into an information retrieval process, an encryption file uploaded by a user terminal to a cloud server c