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From Jonathan Vanasco <modperl-l...@2xlp.com>
Subject OffTopic (slightly) - Module Feedback Wanted - Authen::Ticketless
Date Tue, 13 Nov 2007 16:34:57 GMT
I needed to create an authentication system to handle logins to my  
mod_perl app via Flash and JS

My first thought was to use CRAM-MD5 , but there wasn't a way to do  
that without relying on cookies or a db to handle the challenge

What I came up with was a Ticketless CRAM system (that uses md5 by  
default, but can be extended to use sha1 or any other digester via a  
subclass that has isolated all of the digest functions )

It creates a challenge in this format:
	"%(time_start)s::%(seed)s::%(checksum)s"
where checksum is
	MD5( $time_start . $seed . $site_secret )
Therefore:
	the time window of validity can be controlled
	there is no need to store / session stuff on the server

Any feedback would be greatly appreciated

I'm most concerned about:
	a-	Security Concerns
		i. I sketched this out during brunch on a napkin.  Please tear  
apart if this is unsuitable for production
	b- 	Module Design
		i. the Authen::Ticketless package just wraps the CRAM subpackage  
and is almost needless for that.  I almost did this as  
Authen::Ticketless::CRAM , and left the Authen::Ticketless namespace  
empty


The SVN is here:

	http://dev.2xlp.com/svn/mod_perl/Authen::Ticketless/trunk/






// Jonathan Vanasco

w. http://findmeon.com/user/jvanasco
e. jonathan@findmeon.com

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