CA2151739A1 - Complex document security - Google Patents

Complex document security

Info

Publication number
CA2151739A1
CA2151739A1 CA002151739A CA2151739A CA2151739A1 CA 2151739 A1 CA2151739 A1 CA 2151739A1 CA 002151739 A CA002151739 A CA 002151739A CA 2151739 A CA2151739 A CA 2151739A CA 2151739 A1 CA2151739 A1 CA 2151739A1
Authority
CA
Canada
Prior art keywords
document
intermediate form
displaying
content
secure environment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002151739A
Other languages
French (fr)
Other versions
CA2151739C (en
Inventor
Mark Stephen Anderson
John Desborough Yesberg
Michael Pope
Lisa Nayda
Ken Hayman
Brendan Beahan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commonwealth of Australia
Original Assignee
Mark Stephen Anderson
John Desborough Yesberg
Michael Pope
Lisa Nayda
Ken Hayman
Brendan Beahan
Commonwealth Of Australia (The)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mark Stephen Anderson, John Desborough Yesberg, Michael Pope, Lisa Nayda, Ken Hayman, Brendan Beahan, Commonwealth Of Australia (The) filed Critical Mark Stephen Anderson
Publication of CA2151739A1 publication Critical patent/CA2151739A1/en
Application granted granted Critical
Publication of CA2151739C publication Critical patent/CA2151739C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32128—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title attached to the image data, e.g. file header, transmitted message header, information on the same page or in the same computer file as the image
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/21—Monitoring or handling of messages
    • H04L51/212—Monitoring or handling of messages using filtering or selective blocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/12—Applying verification of the received information
    • H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H04N2201/3233—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of authentication information, e.g. digital signature, watermark
    • H04N2201/3235—Checking or certification of the authentication information, e.g. by comparison with data stored independently
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
    • H04N2201/3233—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of authentication information, e.g. digital signature, watermark
    • H04N2201/3236—Details of authentication information generation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N2201/3278—Transmission

Abstract

A method and means are provided 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) (10) before the document is transmitted outside a secure environment (20) in which the document is created. A preferred step in the process of handling a document in a secure environment comprises the step of displaying (34) 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 steps of creating a document (10), transforming (16) said document into an intermediate form (18) by defining the content and structure of said document using a predetermined set of document describers, applying the intermediate form (18) of said document to at least one filter (22) adapted to eliminate or corrupt the content and form of any covert information contained within the intermediate form (18) of said document (10) followed by the previously described step of displaying (34) the document in the manner described above.
CA002151739A 1992-12-14 1993-12-14 Complex document security Expired - Fee Related CA2151739C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPL631292 1992-12-14
AUPL6312 1992-12-14
PCT/AU1993/000645 WO1994014259A1 (en) 1992-12-14 1993-12-14 Complex document security

Publications (2)

Publication Number Publication Date
CA2151739A1 true CA2151739A1 (en) 1994-06-23
CA2151739C CA2151739C (en) 2003-12-09

Family

ID=3776593

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002151738A Expired - Fee Related CA2151738C (en) 1992-12-14 1993-12-14 Message document security
CA002151739A Expired - Fee Related CA2151739C (en) 1992-12-14 1993-12-14 Complex document security

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002151738A Expired - Fee Related CA2151738C (en) 1992-12-14 1993-12-14 Message document security

Country Status (6)

Country Link
US (2) US5701342A (en)
EP (2) EP0746926B1 (en)
AU (1) AU675816B2 (en)
CA (2) CA2151738C (en)
DE (2) DE69333271D1 (en)
WO (2) WO1994014259A1 (en)

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Also Published As

Publication number Publication date
AU5687794A (en) 1994-07-04
CA2151738C (en) 2003-01-21
DE69331064D1 (en) 2001-12-06
EP0686327A1 (en) 1995-12-13
EP0686327B1 (en) 2001-10-31
US5832227A (en) 1998-11-03
CA2151738A1 (en) 1994-06-23
DE69333271D1 (en) 2003-12-04
WO1994014259A1 (en) 1994-06-23
WO1994014258A1 (en) 1994-06-23
AU675816B2 (en) 1997-02-20
EP0686327A4 (en) 1995-10-25
EP0746926A4 (en) 1999-01-13
US5701342A (en) 1997-12-23
CA2151739C (en) 2003-12-09
DE69331064T2 (en) 2002-07-18
EP0746926A1 (en) 1996-12-11
EP0746926B1 (en) 2003-10-29

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