This paper describes the security feature of e-learning authentication. The main goal of this research is to achieve authentication to identify legal user. Internet is open for all users to access and share information. Simultaneously, the user hackers are also their, to examine a web application and infrastructure to understand its design, identify the potentially weak aspects, and use these weaknesses to break or exploit the application. Through authentication process, we could overcome the illegal usage of application. We proposed different algorithms for authentication that is RIPEMD -160. RIPEMD-160 capture overall secure authentication