Image security system using hybrid cryptosystem

This work presents and describes a novel method to hide messages in images in a hybrid manner, assteganography is combined with quantum cryptography. Through stimulating and implementing thishybrid approach, the least significant bit (LSB) substitution is employed for hiding secret messages withincover images that consist of three bands (Red, Green and Blue), after which the output is encrypted usingquantum one-time pad encryption. The models are illustrated explicitly and tested. In addition, the testanalysis uses a steganalysis tool called StegExpose to detect LSB steganography in images. Theexperimental results proved that the image hiding is reliably secure and undetectable, and hence theproposed new hybrid model provides a sufficient security level as well as we have tested the proposedsystem using robust state-of- the-art steganalysis techniques and found the low payload thresholdmaintained in the proposed system produces a high margin of communication security safety. No payloadfiles were detected (0% detections), despite each file containing the entire content of the information asembedded text.