International Journal of Engineering and Advanced Technology (IJEAT)
Authentication is a process of determining whether a particular individual or a device should be allowed to access a system or an application or merely an object running in a device. This is an important process which assures the basic security goals, viz. confidentiality and integrity. Also, adequate authentication is the first line of defense for protecting any resource. It is important that the same authentication technique may not be used in every scenario. For example, a less sophisticated approach may be used or accessing a \"Chat server\" compared to accessing a corporate database.