A Reversible Data Hiding Scheme with High Security and Improved Embedding Capacity

Security and privacy of secret information in communication has always been a prime concern. Numerous methods have been proposed for data hiding in images. Reversible data hiding schemes have gained popularity for their potential applications in a number of fields. Such schemes however have limited data embedding capacity as compared to LSB based data hiding schemes. This paper aims at providing a secure reversible data hiding scheme with improved payload and good image quality. The scheme uses a Hilbert curve to generate data embedding patterns and a logistic map to encrypt the stego image for improving the security. Key sensitivity analysis shows that the scheme is robust to any brute force attack. A framework is presented for application of the proposed scheme to biometric based remote authentication.