The GENIUS Grid Portal: Its Architecture, Improvements of Features, and New Implementations about Authentication and Authorization

Since year 2006, the VOMS exensions are required from many virtual organizations in order to allow the access to various grid services by their users. The purpose of this work is to use grid services by GENIUS Grid Portal as front-end to the grid. The above described components, to generate a valid VOMS (virtual organization membership service) proxy on the user interface where the GENIUS portal is running, are integrate to offer to the end-user a unique service to be executed once after login or in following time after, in order to use the grid functionalities. In order to be sure that who input data is certainly a human people and preventing automated software from performing actions, a random CAPTCHA code (completely automated public Turing test to tell computers and humans apart) is adopted. After loading the applet for proxy creation and its transfer on reserved path on the UI, then the service performs as action the creation of 2 chain valid proxy with VOMS extensions.