Secure encryption and hiding of data and messages in images

Details Secure encryption and hiding of data and messages in images Secure encryption and hiding of data and messages in images

1997-08-06

2000-07-25

Swann, Tod R.

Cryptography

Particular algorithmic function encoding

382169, H04N 7167

Patent

active

060944838

ABSTRACT:
A method of encryption features the steps of first encrypting a message and then hiding (embedding) it within a digital image carrier. This is accomplished by only slightly changing the gray levels of the image carrier. The changes are imperceptible to the human eye, because they appear as random thermal noise that is commonly present in digitized images.

REFERENCES:
patent: 5748763 (1998-05-01), Rhoads
patent: 5819289 (1998-10-01), Sanford, II et al.
Schneier, B. "Applied Cryptography", John Wiley, New York 1996.
Aura, T. "Invisible Communication", Proc. of the Hut Seminar on Network Security '95, Espoo, Finland, Nov. 1995. Telecommunications Software and Multimedia Laboratory, Helsinki University of Technology.
Fridrich, Jiri "Secure Image Ciphering Based on Chaos", Final Report, Rome Laboratory, New York, 1997.

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