Review on Block Based Transformation Image Encryption Techniques

Abstract-Internet has become part and parcel in today’s scenario. Internet is a public network and is not so secure for the transmission of confidential content. With the fast progress in digital data exchange and increased usage of multi media images, it becomes an important issue that how to protect the confidentiality, integrity and authenticity of images. Block transformation is a beneficial approach to secure the image data by shuffling the pixels of the image into a jumbled format. The relationship between the pixels of image is very strong. Block transformation eliminates the image outlines and dissipate the high correlation among image pixels