LSB based image steganography using dynamic key cryptography

Abstract

This paper has been proposed for the space domain image steganography. Here, modification of least significant bit (LSB) of picture element of carrier image (CI) is done by the most significant bit (MSB) of secret image (SI). Here, along with information hiding, security is provided by the dynamic key cryptography. The dynamic feature of key is enabled by rotating the key and each rotation of key produces new key. In this technique, pixel selection of carrier image and secret image is done on the basis of pseudo random number (PRN) which provide double layer security against the stegano analytic attack.