Image Signcryption Using ECC

The demand of mobile devices is increasing day by day because of their portability and many worldwide applications, but more power consumption and high band width, becomes a problem for this and makes uneasy to use it, this problem is solved by signcryption, which provides both authenticity and privacy. Signcryption is the process that combines the functionality of encryption and digital signature in a single logical step. In the literature of signcryption only text data is signcrypted. In this paper we have extended the concept of signcryption to image data, it is so difficult task to extract information form an image, specially signcrypted image, so in this paper we use a technique named as image signcryption.