Multilingual Image Steganography Using Matrix Substitution Cipher and Combinatorial Modulo Function
Mamta Jain, Saroj Kumar Lenka · 2015
Information security is endlessly a challenging technology of the world. Image steganography is the technique through which the terribly confidential information can be hidden in a coated image so that, it should be quite unendurable to extract the said information by the intruder or by any snooping. In this research article an innovative technique is proposed which reveals steganography along with cryptography for more robustness to secret data, highest Least Significant Bit (LSB) implanting technique, and secrets information in divergent language (national language) above and beyond the English language secret communication. Here we have arbitrarily chosen Arabic, Urdu and English languages for secret information keeping in mind that this may give strongest illusion to the intruders. This novel approach comprehends in the senders side for encryption of Arabic, Urdu and English secret information using matrix substitution cipher algorithm, embedding position in the career image by using combination function with mod calculation, dynamically insertion of the cipher text bits in the career image at 5th to 8th bit location using the position indicator value and subsequently stego image is formed and then communicated over the network and in the reverse process once again it will be decrypted at receiver side to get the secret information. In this proposed technique instead of using Arabic, Urdu alphabets and digits directly, and Unicode's of the corresponding Arabic, Urdu alphabets and digits is used. Performance analysis observed using MSE and PSNR.