In this paper, we further proposed a describing functions language,, As soon as the programmers design their access control systems which must accord with the function, they can assure that their ACSs can achieve cooperation on the lay of function.

• 本文进一步的提出了一种功能函数描述语言,使得开发人员只要设计出符合该功能函数语言的访问控制系统,就能够保证这不同的访问控制系统能够在功能层上实现协同工作。