Aleem Ali1, Sherin zafar2, Reshmi Philip1
1Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi -110062, India.
2Computer Engineering Section, University Polytechnic, Jamia Millia Islamia, New Delhi -110025, India.
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 proved higher embedding capacity and maintains secrecy of data. Read more…