Electronic signing apparatus and methods

Details Electronic signing apparatus and methods Electronic signing apparatus and methods

2003-12-16

2009-08-25

Lipman, Jacob (Department: 2434)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

Reexamination Certificate

active

07581105

ABSTRACT:
Methods, apparatus, including computer program products, and systems implement and use techniques relating to electronic signatures. In one implementation, a one-way hash is calculated for an electronic document and a digital watermark representing the one-way hash is embedded in a signature document. Based on a user input, the signature document having the embedded digital watermark is altered, and the electronic document is associated with the signature document. The electronic document and the signature document together comprise a signed electronic document. The user input can include biometric information, such as a handwritten signature or a voice recording. For additional security, the one-way hash can be encrypted before a representation of the hash is embedded in the signature document.

REFERENCES:
patent: 5606609 (1997-02-01), Houser et al.
patent: 5818955 (1998-10-01), Smithies et al.
patent: 2002/0129256 (2002-09-01), Parmelee et al.
patent: 2003/0195935 (2003-10-01), Leeper
patent: 2005/0132195 (2005-06-01), Dietl
patent: WO 00/11834 (2000-03-01), None
Microsoft Press, Microsoft Computer Dicionary, 2002, Fifth edition, p. 160.
Adode Systems Incorporated, “Adobe Acrobat 4.0: Frequently Asked Questions,” undated materials, copyright 1999, 14 pgs.
Adobe Systems Incorporated, “Adobe Acrobat 5.0: Digitally Sign PDF Documents,” undated materials, copyright 2001, 3 pgs.
Adobe Systems Incorporated, “Adobe Digital Signature Appearances: Version: Acrobat 6.0,” May 2003, 20 pgs.
Adobe Systems Incorporated, “Protecting Electronic Documents with Adobe Security Solutions: Persistent Access Control and Digital Signatures Add Additional Security and Reliability to Electronic Document Exchange,” undated materials, copyright 2003, [online], [retrieved from the Internet: http://www.adobe.com/security/pdfs/acrobat—security—wp.pdf], 11 pgs.
Adobe Systems Incorporated, “Sample Signatures for Use with Acrobat Digital Signature Plug-Ins,” undated materials, 3 pgs.
Digimarc Corporation, “Glossary: Digimarc Digital Watermarking Terms and Definitions,” undated materials, copyright 2003, [online], [retrieved from the Internet on Oct. 13, 2003: http://www.digimarc.com/watermarking/glossary.asp], 2 pgs.
Digimarc Corporation, “Technology Overview: A Digimarc Digital Watermark Is Imperceptible to the Human Eye,” undated materials, copyright 2003, [online], [retrieved from the Internet on Oct. 13, 2003: http://www.digimarc.com/watermarking/techOverview.asp], 1 pg.
“Digital Watermarking Technology,” undated materials, [online], [retrieved from the Internet on Oct. 13, 2003: http://www.rl/af/mil/div/IFB/techtrans/datasheets/H2Omark.html], 2 pgs.
Kutter, Dr. Martin, et al., “Digital Watermarking Technology,” undated materials, copyright 2000 by AlpVision, [online], [retrieved from the Internet: http://www.alpvision.com/DOWNLOAD/watermarking.pdf], 4 pgs.
Petitcolas, Fabien, et al., “Digital Watermarking Frequently Asked Questions (FAQ),” Oct. 14, 2001, copyright 2000-2002 by Watermarking World, [online], [retrieved from the Internet on Oct. 23, 2003: http://www.watermarkingworld.org/faq.html], 6 pgs.
“Public Key Encryption and Digital Signatures,” PowerPoint presentation, undated materials, [online], [retrieved from the Internet on Oct. 13, 2003: source unknown], 28 pgs.
Simon, Ed, et al., “An Introduction to XML Digital Signatures,” undated materials, [online], [retrieved from the Internet on Oct. 13, 2003: http://www.xml.com/lpt/a/2001/08/08/xmldsig.html], 6 pgs.
The Youd Zone, “What is a Digital Signature?” undated materials, [online], [retrieved from the Internet on Oct. 13, 2003: http://www.youdzone.com/signature.html], 4 pgs.
International Search Report and Written Opinion of the International Searching Authority, PCT Application Serial No. PCT/EP2004/014246, Mar. 11, 2005, 12 pp.
International Preliminary Report on Patentability and Written Opinion of the International Search Authority, PCT/EP2004/014246, Jun. 29, 2006, 8 pp.

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