Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2006-12-05
2006-12-05
Arani, Taghi T. (Department: 2131)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S168000, C380S200000, C352S001000, C352S019000, C352S026000, C382S100000
Reexamination Certificate
active
07146501
ABSTRACT:
In encoder side, an electronic watermark generating device generates an electronic watermark which contains a encryption key. An electronic watermark inserting device inserts the electronic watermark containing the encryption key into a first portion of data. An encrypting device encrypts a second portion of the data with the encryption key. The first portion into which the watermark containing the encryption key has been inserted and the second portion which has been encrypted with the encryption key are combined by a switch and thereafter recorded on a record medium or transmitted to a network. In decoder side, the watermark containing the encryption key is extracted from the first portion and the encryption key is extracted from the watermark. The second portion is decrypted with the extracted encryption key.
REFERENCES:
patent: 5613004 (1997-03-01), Cooperman et al.
patent: 5991426 (1999-11-01), Cox et al.
patent: 6011849 (2000-01-01), Orrin
patent: 6243480 (2001-06-01), Zhao et al.
patent: 6301663 (2001-10-01), Kato et al.
patent: 6353672 (2002-03-01), Rhoads
patent: 6519352 (2003-02-01), Rhoads
patent: 6523113 (2003-02-01), Wehrenberg
patent: 6560339 (2003-05-01), Iwamura
patent: 6611599 (2003-08-01), Natarajan
patent: 6674874 (2004-01-01), Yoshida et al.
patent: 6804377 (2004-10-01), Reed et al.
patent: 6865550 (2005-03-01), Cok
patent: 6954854 (2005-10-01), Miura et al.
patent: 6957350 (2005-10-01), Demos
patent: 2001/0004736 (2001-06-01), Hirano et al.
patent: 2002/0069359 (2002-06-01), Watanabe
patent: 2002/0150239 (2002-10-01), Carny et al.
patent: 2003/0009669 (2003-01-01), White et al.
patent: 2003/0023847 (2003-01-01), Ishibashi et al.
patent: 2003/0194109 (2003-10-01), Acharya et al.
patent: 2004/0264735 (2004-12-01), Rhoads
patent: 2005/0039022 (2005-02-01), Venkatesan et al.
patent: 10-164550 (1998-06-01), None
patent: 11-232779 (1999-08-01), None
patent: 11-317859 (1999-11-01), None
Fang Bao, Multimedia Content Protection by Cryptography and Watermarking in Tamper-resistant Hardware, Proceedings of the 2000 ACM workshops on Multimedia Publisher, ACM Press, Nov. 2000.
Arani Taghi T.
Nec Corporation
Scully , Scott, Murphy & Presser, P.C.
LandOfFree
Method and apparatus for encrypting and decrypting data... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for encrypting and decrypting data..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for encrypting and decrypting data... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3712370