Study on several confidentiality protection technologies for electronic document

As a usual information media in organizations, electronic document often relates to important information that should be kept confidential. The no-authorized access, unauthorized use and uncontrolled spread of electronic document will bring great loss to organizations. Therefore, ensuring the security of electronic document, preventing information from leaking and uncontrolled spreading are basic requirements of organizations´ office affairs. Focusing on confidentiality, which is the most important features of information security, this study collected and summarized several effective security technologies for electronic document, such as access control list, password, encrypting file system and information rights management, discussed the safety features through analysis of their operational principle and a comparative analysis. The study suggests that IRM is the most perfect and effective security technology for electronic document, organizations should choose the suitable safety technical measures according to actual needs and IT infrastructure.