Various Authentication Tecniques for Security Enhancement

Authentication is the art of confirming the truth of an attribute of an entity. Entity may be a person. If a entity is a person it can authenticate with the help of its traits such as his facial attribute, fingerprinting attribute, retina attribute, palm attribute, signature of a person, password, token attributes etc. There are so many attacks to which these techniques are vulnerable. So, today the security of the authentication system is becoming a burnt issue. Keeping in the view, the importance of the authentication systems, we analyze various authentication techniques in our paper. And try to find out various advantages and disadvantages of various authentication systems. This paper gives the emphasis on the various issues involved in the various authentication techniques. KeywordsBiometrics, Authentication, Knowledge based,Token based, Security etc.