improved security in apl applications packages
This paper describes an experimental augmentation of APL/360 which substantially improves the privacy and security of APL applications packages. It is based upon the concept of qualifying a name: the user may specify that the name of any variable, function, or group is to be implicity qualified by the user's sign-on number. In effect, the name becomes the private property of the user. Any referent of the name is considered a protected object, since access by other users is possible only through functions created by the user who qualified the name.
secure applications packaging paper experimentation privacy concept users users variability functional group effect object access user