METHOD AND APPARATUS FOR PROTECTING FILE SYSTEM BASED ON DIGITAL SIGNATURE CERTIFICATE

摘要

Method and apparatus for protecting file system is disclosed. The method for the protecting file system includes the steps of: a) generating first digital signature keys and a system security manager's certificate for a system security manager; b) storing system security manager's certificate onto a security kernel when installing an operating system on a server computer; c) generating second digital signature keys and user's certificate for a general user; d) setting an access authority of the file system; e) identifying a user through a digital signature authentication method when the user tries to access the file system; and f) giving the user the access authority for the file in accordance with identification result.