METHOD, APPARATUS AND SYSTEM FOR PRIVILEGE INFORMATION MANAGEMENT

摘要

Embodiments of present invention disclose a method, an apparatus and a system for privilege information management. The method includes: receiving the privilege modifying instruction, wherein the privilege modifying instruction is used to indicate the modifications to the privilege information of a file; modifying the privilege information according to privilege modifying instruction of a file; sending the identification of the file and the modified privilege information to the server to let the server determine if the privilege information corresponding to the identification has already exist in itself according to the identification, and if yes, replacing the privilege information corresponding to the identification with the modified privilege information, or if not, saving the modified privilege information. The apparatus includes a modifying module, a processing module and a first sending module. The system includes clients and a server. By means of saving the privilege information in both the server and the file, the embodiments of present invention effectively improve the flexibility of file encryption, reduce the burden of the server and improve the performance of the server.