Secured hand sacking based two phase data concealing architecture in spectral domain

The requirement of information confidentiality in digital world emanates different approaches to the criticality of secrecy. Steganographic methods hide the secret information into cover media. In this paper the carrier medium is checked for vulnerabilities before the actual information transfer can be made. If the medium is sensed safe to transfer then a suitable cover image is selected and is transformed using four point Daubechies DWT to one low frequency band and three high frequency bands. Three sub images are constructed from the cover image as keeping one high frequency band intact and setting other high frequency band to zero. The secret image is spread over the three images and transferred to the receiver. At receiver end images are added and secret image is extracted from it using DWT.