An Improved Method of Steganography Combined with Cryptography

Abstract

Cryptography and Steganography are the two popular methods for secure data hiding and transmission available
broadly. The techniques used information in order to cipher or cover their existence respectively. Cryptography is the
science of using mathematics to encrypt and decrypt data; the data are converted into some other gibberish form, While
Steganography is the art and science of hiding communication, a stenographic system, thus embeds hidden content in the
unremarkable cover media so as not to provoke an eavesdropper’s suspicion. This paper focuses on improved LSB
information hiding algorithm of data using RSA cryptographic algorithm, combining information hiding and cryptography,
increasing the human eye visual features and the encryption algorithm to improve the security of information hiding. Finally
we get a better encryption technique than LSB algorithm which provides high PSNR and embedding capacity. Thus the two
techniques are usually combined for enhanced security to a great extent.