Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2007-06-05
2007-06-05
Sheikh, Ayaz (Department: 2131)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S182000, C713S189000, C380S200000, C380S201000, C705S057000
Reexamination Certificate
active
09536944
ABSTRACT:
A number of data items are selected for inclusion in a data set so as to discourage a transmission of the entire set over a limited bandwidth communications path, such as the Internet. Each data item comprises one or more sections, and the totality of sections constitute the complete data set. Each section of the data set contains a watermark that includes an identifier of the section, and an identifier of the data set. In a preferred embodiment, the identifier of the section is the address of the section, and the identifier of the data set is a serial number and an indicator of the total size of the data set. The presence of the data set is confirmed by checking the watermarks of randomly selected sections to verify that the original section that formed the data set is present. If a section is discovered to be missing or altered, subsequent processing of data items of the data set is prevented. In a preferred embodiment, the identifiers are stored as a combination of robust and fragile watermarks.
REFERENCES:
patent: 5341429 (1994-08-01), Stringer et al.
patent: 5448307 (1995-09-01), Gelissen et al.
patent: 5473687 (1995-12-01), Lipscomb et al.
patent: 5625693 (1997-04-01), Rohatgi et al.
patent: 5809006 (1998-09-01), Davis et al.
patent: 5905800 (1999-05-01), Moskowitz et al.
patent: 5930209 (1999-07-01), Spitzenberger et al.
patent: 6064764 (2000-05-01), Bhaskaran et al.
patent: 6226387 (2001-05-01), Tewfik et al.
patent: 6460046 (2002-10-01), Meek
patent: 6490683 (2002-12-01), Yamada et al.
patent: 6865676 (2005-03-01), Staring et al.
patent: 6944771 (2005-09-01), Epstein
patent: 6986048 (2006-01-01), Epstein et al.
patent: 2005/0226421 (2005-10-01), Briancon et al.
patent: 2006/0101269 (2006-05-01), Moskowitz et al.
patent: 2006/0130107 (2006-06-01), Gonder et al.
patent: 2006/0184807 (2006-08-01), Kocher et al.
patent: 0890948 (1999-01-01), None
patent: 0903943 (1999-03-01), None
patent: 0908881 (1999-04-01), None
patent: 0908881 (1999-04-01), None
patent: WO9917281 (1999-04-01), None
patent: WO2001/59705 (2001-08-01), None
patent: WO2006/064473 (2006-06-01), None
Acken, John, How watermarking adds value to digital content, Jul. 1998, Communications of the ACM, pp. 74-77.
Zhong et al, A New Fragile Watermarking Technique for Image Authentication, 2002, IEEE, pp. 792-795.
Epstein Michael A.
Rosner Martin
Staring Antonius A. M.
Koninklijke Philips Electronics N. V.
Moorthy Aravind K
Sheikh Ayaz
LandOfFree
Protecting content from illicit reproduction by proof of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Protecting content from illicit reproduction by proof of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protecting content from illicit reproduction by proof of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3871417