Secure Image Encryption Authentication Compression System

A two-phase content-based image authentication scheme is constructed based on a combination of hard and soft authentication implementing previous existing generic approximate message authentication codes which is a error-correcting codes with cryptographic message authentication codes and symmetric encryption techniques. The message authentication codes which used for hard authentication. The two-phase image authentication scheme verifies the validity of an image in two phases. In low frequency elements the image are subjected to the early phase while some higher frequency elements are left to the instant phase only if the first phase succeeds. The planned scheme tolerates common content-preserving modifications in an image and can separate intended modifications affecting the image content. The Proposed scheme demonstrates high perceptive capability and can detect different types of forgery attacks on images while preserving the robustness. The level of content perseverance is defined by the content based authentication scheme in use, e.g., using a threshold value. This threshold is based on the criticality level of the application for which the threshold is chosen. Highly critical applications have more stringent requirements and therefore prefer a hard authentication by choosing a smaller threshold. Less critical applications uses soft authentication scheme by selecting a higher value for threshold.