Improved security in APL applications packages

Authors:
Thomas H. Puckett
Affiliations:
-
Venue:
APL '74 Proceedings of the sixth international conference on APL
Year:
1974

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Abstract

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.