DE69607844D1 - Verfahren zur beglaubigung digitaler datenwerke - Google Patents

Verfahren zur beglaubigung digitaler datenwerke

Info

Publication number
DE69607844D1
DE69607844D1 DE69607844T DE69607844T DE69607844D1 DE 69607844 D1 DE69607844 D1 DE 69607844D1 DE 69607844 T DE69607844 T DE 69607844T DE 69607844 T DE69607844 T DE 69607844T DE 69607844 D1 DE69607844 D1 DE 69607844D1
Authority
DE
Germany
Prior art keywords
certificating
digital data
data works
works
digital
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.)
Expired - Fee Related
Application number
DE69607844T
Other languages
English (en)
Other versions
DE69607844T2 (de
Inventor
David Hilton
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.)
SIGNUM TECHNOLOGIES Ltd
Original Assignee
SIGNUM TECHNOLOGIES Ltd
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 SIGNUM TECHNOLOGIES Ltd filed Critical SIGNUM TECHNOLOGIES Ltd
Publication of DE69607844D1 publication Critical patent/DE69607844D1/de
Application granted granted Critical
Publication of DE69607844T2 publication Critical patent/DE69607844T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/007—Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Bioethics (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Image Analysis (AREA)
  • Image Processing (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
DE69607844T 1995-07-06 1996-06-24 Verfahren zur beglaubigung digitaler datenwerke Expired - Fee Related DE69607844T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9513790A GB9513790D0 (en) 1995-07-06 1995-07-06 Method of authenticating digital data works
PCT/GB1996/001515 WO1997002522A1 (en) 1995-07-03 1996-06-24 Method of authenticating digital data works

Publications (2)

Publication Number Publication Date
DE69607844D1 true DE69607844D1 (de) 2000-05-25
DE69607844T2 DE69607844T2 (de) 2001-02-22

Family

ID=10777232

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69607844T Expired - Fee Related DE69607844T2 (de) 1995-07-06 1996-06-24 Verfahren zur beglaubigung digitaler datenwerke

Country Status (5)

Country Link
EP (1) EP0838050B1 (de)
AU (1) AU6233996A (de)
DE (1) DE69607844T2 (de)
GB (1) GB9513790D0 (de)
WO (1) WO1997002522A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6449377B1 (en) 1995-05-08 2002-09-10 Digimarc Corporation Methods and systems for watermark processing of line art images
US7313251B2 (en) 1993-11-18 2007-12-25 Digimarc Corporation Method and system for managing and controlling electronic media
US6983051B1 (en) 1993-11-18 2006-01-03 Digimarc Corporation Methods for audio watermarking and decoding
US5748763A (en) 1993-11-18 1998-05-05 Digimarc Corporation Image steganography system featuring perceptually adaptive and globally scalable signal embedding
US6345104B1 (en) 1994-03-17 2002-02-05 Digimarc Corporation Digital watermarks and methods for security documents
US6560349B1 (en) 1994-10-21 2003-05-06 Digimarc Corporation Audio monitoring using steganographic information
US6311214B1 (en) 1995-07-27 2001-10-30 Digimarc Corporation Linking of computers based on optical sensing of digital data
US7751596B2 (en) 1996-11-12 2010-07-06 Digimarc Corporation Methods and arrangements employing digital content items
CA2282016C (en) 1997-03-03 2007-05-01 British Telecommunications Public Limited Company Security check provision
EP0863491A1 (de) * 1997-03-03 1998-09-09 BRITISH TELECOMMUNICATIONS public limited company Sicherheitsprüfungseinrichtung
US7111170B2 (en) 1999-05-19 2006-09-19 Digimarc Corporation Distributed system for responding to watermarked documents
GB9922904D0 (en) * 1999-09-28 1999-12-01 Signum Technologies Limited Method of authenticating digital data works
GB2360893A (en) * 2000-03-28 2001-10-03 Software 2000 Ltd Incorporating a fingerprint in a document at the printer driver
US7321667B2 (en) 2002-01-18 2008-01-22 Digimarc Corporation Data hiding through arrangement of objects
US7519819B2 (en) 2002-05-29 2009-04-14 Digimarc Corporatino Layered security in digital watermarking

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4727544A (en) * 1986-06-05 1988-02-23 Bally Manufacturing Corporation Memory integrity checking system for a gaming device
FR2647924B1 (fr) * 1989-06-06 1994-06-17 Bull Cp8 Procede pour verifier l'integrite d'un logiciel ou de donnees, et systeme pour la mise en oeuvre de ce procede
US5442645A (en) * 1989-06-06 1995-08-15 Bull Cp8 Method for checking the integrity of a program or data, and apparatus for implementing this method
AU683038B2 (en) * 1993-08-10 1997-10-30 Addison M. Fischer A method for operating computers and for processing information among computers

Also Published As

Publication number Publication date
EP0838050B1 (de) 2000-04-19
WO1997002522A1 (en) 1997-01-23
DE69607844T2 (de) 2001-02-22
AU6233996A (en) 1997-02-05
GB9513790D0 (en) 1995-09-06
EP0838050A1 (de) 1998-04-29

Similar Documents

Publication Publication Date Title
DE69737302D1 (de) Verfahren zur Kodierung digitaler Daten
DE69841097D1 (de) Verfahren zur tonsignalverarbeitung
DE69727395D1 (de) Verfahren zur olefinisomerisierung
DE69715815D1 (de) Verfahren zur bilddekodierung
DE69513987D1 (de) Verfahren zur transesterifikation
DE69603255D1 (de) Verfahren zur modifizierung von oberflächen
ATE243211T1 (de) Verfahren zur herstellung von dihalogenazolopyrimidinen
DE59604922D1 (de) Verfahren zur herstellung von polyalkoholen
DE69731499D1 (de) Verfahren zur Datenübertragung
DE69604349D1 (de) Verfahren zur Bildübereinstimmung
DE69604277D1 (de) Verfahren zur herstellung von nootkaton
DE69630686D1 (de) Verfahren zur echtheitsprüfung von münzen
DE59811691D1 (de) Verfahren zur datenregeneration
DE69433620D1 (de) Verfahren zur Datenkompression
DE69607844D1 (de) Verfahren zur beglaubigung digitaler datenwerke
DE69516907D1 (de) Verfahren zur bildkontrast- und auflösungsverbesserung
DE69619356D1 (de) Verfahren und Vorrichtung zur Kodierung/Dekodierung von digitalen Informationen
DE59712814D1 (de) Verfahren zur Bildsegmentierung
DE59601604D1 (de) Verfahren zur herstellung von n-aryl- und n-hetarylhydroxylaminen
DE69637869D1 (de) Verfahren zur Bildinterpolation
DE59703815D1 (de) Verfahren zur hydroformylierung
DE69726181D1 (de) Verfahren zur digitalen positionsmessung
DE69603712D1 (de) Verfahren zur herstellung elektronischer karten
DE69616322D1 (de) Verfahren zur herstellung von 3-isochromanonen
DE69732188D1 (de) Verfahren zur immununterdrückung

Legal Events

Date Code Title Description
8332 No legal effect for de
8370 Indication of lapse of patent is to be deleted
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee