Block based Cipher Key Image Encryption Algorithm combined with Compression using DWT

Abstract

The internet transfer of pictures has resulted to a safety issue where private images must be protected from unauthorized access. In the increasing technological age, nearly everyone shares their private data with other users, including pictures over the internet, or a database repository that attracts hackers to take advantage of this data. Security supplied pictures such as blue printing of business projects, hidden pictures of the army's concern or the interest of the business using image processing methods have proved useful. In this paper a DWT based compression has been performed along with block transformation based encryption. The aim is to scramble the picture data to a point where the real transmitted picture becomes hard for the intruder.