What is Authentication?

What is Authentication? This lesson covers different methods for user authentication. User authentication is simply proving who you are. There are many methods that can be used for authentication and it is not just for confidentiality; authentication can also be used for non-repudiation purposes. Repudiation is when there is an issue and someone tries to say they did not cause it so authentication holds people accountable. Factors of authentication include:
  • Something you have
  • Something you know
  • Something you are
There is also multifactor/two factor authentication:
  • Badge and Personal Identification Number (PIN)
  • Fingerprint and password
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