Callum Macdonald » rainbow attacks http://www.callum-macdonald.com Callum on life Wed, 08 Feb 2012 13:52:11 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Username as password salt http://www.callum-macdonald.com/2008/06/13/username-as-password-salt/ http://www.callum-macdonald.com/2008/06/13/username-as-password-salt/#comments Fri, 13 Jun 2008 08:05:22 +0000 Callum http://www.callum-macdonald.com/?p=616 Continue reading →]]> Is there any reason why one should not use the username as the password salt? Storing md5( username . password ) instead of md5( password ) in the password column.

It seems like a very simple idea, so I’m sure there’s a good reason why it’s not in popular use. Hopefully somebody can tell me that reason! :)

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