Improved PSNR with Encryption and Data hiding Using Histogram shrink and Wet paper coding

Abstract

Now a day’s security is the main object in a
digitalized world. To make our data secure we need
encryption which adds key and some randomly
generated values to the respected image that means
Encryption disguises the content of the message.
Whereas steganography disguise the existence of the
message. However additional security will be
obtained if we use encryption along with the
steganography. Encryption algorithm which we used
here is a modificated version of RSA algorithm which
is proposed by paillier and the random values are
added by PN sequence generator values to the
respected pixels. The datahiding proposed here is,
we need to split the image into different layers and
add the data which we want to hide. The method
which we proposed here is merging of lossless and
reversible data hiding, whereas the key used here is
symmetric and the data hiding at the transitter uses
the reversible and at the receiver the lossless method
is used.