Digitally certified stationery

Details Digitally certified stationery Digitally certified stationery

2011-08-09

2011-08-09

Poltorak, Peter (Department: 2434)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S156000

Reexamination Certificate

active

07996677

ABSTRACT:
Systems and methods for digitally certified stationery are described. In one aspect, a stationery granting authority (SGA) receives a request from a user to generate a document. If the user is authorized for the requested document, the SGA generates a certificate with credentialing information from data in the request. The SGA generates a first digital signature from some of the credentialing information. The SGA communicates the certificate to the user for editing and distribution as the document. A recipient of the document determines whether the document is “official” by contacting a specified service to provide certain information from the document. The verification service computes a second digital signature from the provided information for comparison to the first digital signature. If there is a match, the service notifies the recipient that the document is valid/official. Otherwise, the recipient is notified that the document is not valid.

REFERENCES:
patent: 5157726 (1992-10-01), Merkle et al.
patent: 5544255 (1996-08-01), Smithies et al.
patent: 5712914 (1998-01-01), Aucsmith et al.
patent: 5765176 (1998-06-01), Bloomberg
patent: 5912974 (1999-06-01), Holloway et al.
patent: 5970252 (1999-10-01), Buxton et al.
patent: 6021202 (2000-02-01), Anderson et al.
patent: 6023509 (2000-02-01), Herbert et al.
patent: 6108788 (2000-08-01), Moses et al.
patent: 6138106 (2000-10-01), Walker et al.
patent: 6671804 (2003-12-01), Kent
patent: 6892947 (2005-05-01), Jam et al.
patent: 6907528 (2005-06-01), Bunn
patent: 6990585 (2006-01-01), Maruyama et al.
patent: 7073195 (2006-07-01), Brickell et al.
patent: 7092953 (2006-08-01), Haynes
patent: 7103572 (2006-09-01), Kawaguchi et al.
patent: 7117363 (2006-10-01), Lincoln et al.
patent: 7252222 (2007-08-01), Finnerty et al.
patent: 7328847 (2008-02-01), Shen et al.
patent: 7340611 (2008-03-01), Alev et al.
patent: 7353397 (2008-04-01), Herbach
patent: 7441121 (2008-10-01), Cutter et al.
patent: 7526642 (2009-04-01), Hurtta et al.
patent: 7581102 (2009-08-01), Yasuda
patent: 7581106 (2009-08-01), Das et al.
patent: 7647494 (2010-01-01), Wray et al.
patent: 2002/0012445 (2002-01-01), Perry
patent: 2002/0013899 (2002-01-01), Faul
patent: 2002/0026574 (2002-02-01), Watanabe et al.
patent: 2002/0101597 (2002-08-01), Hoover
patent: 2002/0103723 (2002-08-01), Platner et al.
patent: 2002/0129257 (2002-09-01), Parmelee et al.
patent: 2002/0166049 (2002-11-01), Sinn
patent: 2003/0004997 (2003-01-01), Parker et al.
patent: 2003/0012374 (2003-01-01), Wu et al.
patent: 2003/0018585 (2003-01-01), Butler et al.
patent: 2003/0078880 (2003-04-01), Alley et al.
patent: 2003/0204812 (2003-10-01), Hayashi
patent: 2004/0073446 (2004-04-01), Snow
patent: 2005/0019937 (2005-01-01), Shiue et al.
patent: 2005/0038756 (2005-02-01), Nagel
patent: 2006/0072781 (2006-04-01), Harrington
patent: 2006/0085634 (2006-04-01), Jain et al.
patent: 2006/0085646 (2006-04-01), Cutter et al.
patent: 2006/0161781 (2006-07-01), Rice et al.
patent: 2006/0265590 (2006-11-01), DeYoung et al.
patent: 2006/0271787 (2006-11-01), DeYoung et al.
patent: 2007/0073626 (2007-03-01), Reeder et al.
patent: 2007/0074029 (2007-03-01), Yamamoto
patent: 2007/0165261 (2007-07-01), Someya
patent: 2008/0046984 (2008-02-01), Bohmer et al.
patent: 20040064780 (2004-07-01), None
patent: WO0237309 (2002-05-01), None
PCT Search Report for Application No. PCT/US2008/063886, mailed Oct. 29, 2008, 11 pgs.
Bender et al., “Techniques for data hiding”, IBM Systems Journal, vol. 35, Nos. 3&4, 1996, pp. 313-pp. 336.
Brassil et al., “Electonic Marking and Identification Techniques to Discourage Document Copying”, IEEE Journal on Selected Areas in Communication, vol. 13, No. 8, Oct. 1995, pp. 1495-pp. 1504.

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