Research on information security model and security system design
Xuezeng Pan · Journal of Zhejiang University(Engineering Science) · 2001
After study of existing security models; analysis of information flow model, Bell-LaPadula(BLP) access control model and Biba access control model; and collation and comparison of their advantages and disadvantages, an improved model is put forward that satisfies the actual demands of information security. An implementation strategy is put forward that ensures information security, reliability, practicality and compatibility in the designed security system. An implementation scheme of this security system and its components and functions is provided. This system combines the following functions: mandatory access contro1, privilege separation, security audit, identity authentication and self-protection. It achieves the level 3 of national information security standard and level B1 of TCSEC standard. It was implemented in the Windows NT and Linux operating system and has yielded good resultsin application.