05701342 is referenced by 39 patents and cites 6 patents.

A method and means to control the degree to which the presence of covert information may be reduced, eliminated or corrupted in documents created on a computer device (particularly complex documents) before the document is transmitted outside a secure environment in which the document is created. The process of handling a document in a secure environment comprises the preferred step of displaying the document or a predetermined portion thereof in a manner which conforms to the rule that no pixel of the display is written to more than once for the current portion of the document being displayed. Preferably the method includes the steps of creating a document, transforming the document into an intermediate form by defining the content and structure of the document using a predetermined set of document describers, applying the intermediate form of the document to at least one filter adapted to eliminate or corrupt the content and form of any covert information contained within the intermediate form of the document followed by the previously described step of displaying the document in the manner described above.

Title
Complex document security
Application Number
8/481397
Publication Number
5701342
Application Date
August 28, 1995
Publication Date
December 23, 1997
Inventor
Brendan Beahan
Salisbury
AU
Ken Hayman
Salisbury
AU
Lisa Nayda
Salisbury
AU
Michael Pope
Salisbury
AU
John Desborough Yesberg
Salisbury
AU
Mark Stephen Anderson
Salisbury
AU
Agent
Baker Maxham Jester & Meador
Assignee
The Commonwealth of Australia of Anzac Park
AU
IPC
H04L 9/00
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