What is Steganography?

A Genetic algorithm based crypt-steganography technique for message hiding in JPEG images Aleem Ali*, Sherin Zafarb, Reshmi Philip
a) M.Tech Scholar, Jamia Hamdard(Hamdard University), Hamdard Nager, N.D-110062
b) F/O Engg, University Polytechnic, JMI, New Delhi-110025
Email: [e-mail], [e-mail], [e-mail]

Running Head: A Genetic algorithm based crypt-steganography technique for message hiding in JPEG images

*To whom correspondence should be addressed

Aleem Ali

M.Tech Scholar, Jamia Hamdard(Hamdard University), Hamdard Nager, N.D-110062 Abstract

Genetic algorithm based method of message hiding employs the features of both Cryptography and Steganography to provide high level protection of secret information .The developed system generates the CRC of the message to be hidden, compresses it to achieve faster speed of transmission and asks for a JPEG image which acts as a carrier of the message. The compressed message is then embedded into JPEG image by P01 algorithm using a secret key at the sending end, hence generating a crypt-stego JPEG image. At the receiving end, the compressed message is extracted from crypt-stego using the same secret key which was used for embedding. The use of cryptography along with genetic algorithm makes the proposed “Crypt-Stegnography” technique more secure and maintains privacy and secrecy of the message. Genetic algorithm maintains appropriate peak signal to noise ratio of JPEG images which results in lesser probability of detection of secret message. The use of P01 technique ensures high embedding capacity. The experiments carried out through the developed system proves higher embedding capacity and maintains secrecy of data.

Keywords

Crypt-Steganography ,Compression -Decompression, CRC Generation and verification,P01,GA.

Introduction

As an important component of multimedia information security information hiding has received wide

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