Patent ID: 6745245
Filing Date: 2004-06-01
Classification: G06F,H04L

Abstract:
In a networked system including a client system and a conditional access system, a method of controlling the ability of scripts to access resources at the client system, comprising:maintaining at the client system an access control data structure for regulating the accessibility of one or more resources, the access control data structure comprising (i) a resource identifier field representing a particular resource for which access is to be controlled, (ii) a script source identifier field representing a script source whose access to the particular resource is to be controlled, and (iii) a permission identifier field representing a permission that is to be applied to one or more scripts from an authorized script source when one or more scripts that are received from the authorized script source request access to the particular resource; at the client system, receiving from the conditional access system, a scripted command to modify the access control data from a script source; and upon determining that the script sources is authorized to modify the access control data structure, as determined by the script source identifier field, resource identifier field and permission identifier field, modifying the access control data structure as specified by the received command.