Hybrid Collage CAPTCHA
Divya Shanker, Prashant Gupta, Aditya Kumar Jaiswal · 2013
Authentication is indeed at the heart of any secure system. CAPTCHAs, a class of HIPs tests, are a program that tells whether user is a human or a computer. CAPTCHAs currently in use have been broken. Thus, there is a need to employ stronger CAPTCHAs to keep these breaking attacks at bay while retaining ease of implementation on websites and ease of use for humans. One of the CAPTCHA methods is Collage CAPTCHA. It is a method for distinction between human and computer programs through recognition and finding a picture of an object among some objects. In this project we improve the resistance of Collage CAPTCHA method by an improved method called Hybrid Collage CAPTCHA. In this method we display images on left and right side of the screen. On left side screen we have an image. On right side screen we have the corresponding images along with different names in distorted form. Now the computer program asks user to choose the picture with correct name. If the user select correctly, then user is allowed to enter the name of the image in the given text box. If entered name is correct, then we guess that user is human.