HTTP basic authentication

What is the difference between HTTP basic authentication and protocols like SAML, Kerberos, etc

Is HTTP basic authentication the default and most used of the authentication methods?

Thanks
Anthony LuciaAsked:
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Shalom CarmelCTOCommented:
Basic authentication is the easiest to set up, and is fully supported inside the HTTP RFC standards. It is also the least secure and the most difficult to scale up.

The difference from SAML, Kerberos and OAuth is that these are authentication schemes including a third trusted party and no passwords are transmitted on the wire during authentication to the web site.
In contrast, BA involves sending the user and password in base64 encoded clear text inside the HTTP request.
IF the user is "Anthony" and the password is "Lucia", the string included in the request will be

QW50aG9ueTpMdWNpYQ==

Take it here to decode http://www.opinionatedgeek.com/dotnet/tools/Base64Decode/Default.aspx
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