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With the growing internet technology, the number of intruders trying to steal the confidential information has grown exponentially. In the recent past, hybrid mechanisms that use steganography mechanism to hide the encrypted data are proposed. The salient features that these hybrid security mechanisms should posses are high Peak Signal to Noise Ratio (PSNR), data embedding capacity, entropy and low computational time. This thesis also proposes a hybrid security mechanism that emphasizes on embedding capacity and entropy. To improve randomness, the use of chaos process wherever possible is done while for improving embedding capacity the steganography process employed is Improved Bit Plane Complex Steganography (IBPCS). In addition, for efficiency improvement hierarchical visual cryptography is used. The scheme is implemented in MATLAB-10 and several performance metrics are used to evaluate the efficacy of proposed technique in comparison with others in literature. The results show that the proposed mechanism has high embedding capacity and high security with moderate decrease in PSNR value.
[1] Priya Rawat, Nidhi Gupta, Suman Dagar, “Data Security by a Hybrid Mechanism,” International Journal of Advanced Research in Computer and Communication Engineering (IJARCCE), DOI: 10.17148/IJARCCE.2018.7624
