Abstract

The use of multimedia files has been increased drastically. These files may contain sensitive information like military images, medical images, and technical blueprints. This information is passed through open networks which are insecure. This paper proposes a method to encrypt the images according to the required level of security. In the paper, the images are classified into three groups. They are- images having low, intermediate and high security. Different encryption methods are used for these three categories of images. The main contribution of this paper is RGB image encryption using Elliptic Curve cryptography. This paper gives more privilege to the user to select the encryption method and image quality. After the encryption, the images are compressed using JPEG method. Since ECC is used for encryption, this method is highly suitable for mobile environments where the processing power and battery life is limited.