Abstract: Completely Automated Public Turning Test to tell Computers and Humans Apart (CAPTCHA) is essentially used to prevent some kind of malicious programs from accessing the web resource automatically. In modern era web services is an essential business tool in e-commerce. The emergence of intelligent, complicated attacks similar to DoS (Denial of Service) attack formulates web services still vulnerable. To moderate this attack, CAPTCHA is used as one of the most standard security technology. It is from uncomplicated ones, like typing the imprecise text also with differentiate an object in an image. In web security there is various kind of Captcha has been used to the purpose of security, such as text based Captcha, image supported Captcha, and audio oriented Captcha and video related captcha. This proposed paper indicates a novel online security scheme which is constructed with panel cartoons. Captcha is done with the turing test. Captcha as graphical passwords (CaRP) are incorporated and it generates a new family of cartoon based graphical password which is based on Jigsaw puzzle. The method proposed in this paper allows accessing the web services faster as well as in secured manner. The experimental results shows, the performance analysis in terms of security considerations by the combination of Captcha and graphical password scheme compared to existing methods.
Keywords: Satellite image, Image Encryption, Matrix form, Elementary Row Operations, Elementary Column Operation.