3-LAYER PC TEXT SECURITYVIA COMBININGCOMPRESSION, AES CRYPTOGRAPHY2LSB IMAGE STEGANOGRAPHY

In today's scenario, one of the biggest challenges facing computer users is how to secure data on a personal computer or in any communication. Various forms of data security and hiding algorithms have been developed in the last decade. Cryptography and steganography are known familiar security methods to be used for hide sensitive data. In this paper, we have developed a data hiding method in images with three security layers. The first layer is compression to reduces the redundancy in data representation, i.e. to decrease the storage capacity required for that sensitive data. The second layer is cryptography using the Advance Encryption Standard (AES) to make the compressed data unusable. The third layer hides the data in the 2 least significant bits (LSB) of images presenting high 3-layers security scheme. The results proven interesting outcomes compared to other methods. This 3-layer technique is showing promising research direction for further text security developments to be coming in the future.