Cryptography – Communication system using cryptography – Having compression
Reexamination Certificate
2007-02-06
2007-02-06
Barron, Gilberto (Department: 2134)
Cryptography
Communication system using cryptography
Having compression
Reexamination Certificate
active
10278162
ABSTRACT:
A stream of data is encoded by applying a multilevel transform to the stream of data, each level of the transform producing one or more transform coefficients for each block of a sequence of blocks in the stream of data. Encryption is applied to at least a subset of the transform coefficients produced by a least one level of the multilevel transform. Furthermore, at least one level of the multilevel transform is applied to the encrypted transform coefficients. The multilevel transform and encryption operations generate a result set of transform coefficients. The result set of transform coefficients may be encrypted, using a symmetric key encryption, to generate an output data stream that is then transmitted from a sending device to a receiving device. The encoding method may be performed in real time, producing the output data stream at a same rate as the stream of data is presented for encoding.
REFERENCES:
patent: 5788648 (1998-08-01), Nadel
patent: 5809139 (1998-09-01), Girod et al.
patent: 5909518 (1999-06-01), Chui
patent: 6185312 (2001-02-01), Nakamura et al.
patent: 6415042 (2002-07-01), Shin
patent: 6834344 (2004-12-01), Aggarwal et al.
patent: 6985585 (2006-01-01), Keyes et al.
patent: 2002/0188570 (2002-12-01), Holliman et al.
patent: 1 033 880 (2000-09-01), None
patent: 1033880 (2000-09-01), None
A. Hauter et al.,Compression and Encryption, CS1 801 Project Fall 1995, http://www.science.gmu.edu/˜mchacko/csi801/proj-ckv.html, entire document, Dec. 7, 1995.
Amara Graps,An Introduction to Wavelets, 1995 Institute of Electrical and Electronics Engineers, Inc.
John Przybylski,Wavelets and Cryptography, Masters Project, Marymount University, Dec. 16, 1998.
Barron Gilberto
Morgan & Lewis & Bockius, LLP
Telesecura Corporation
LandOfFree
System and method for real-time secure communication based... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for real-time secure communication based..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for real-time secure communication based... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3840827