Hi,

On 3 Nov 2011, at 15:09, Alejandro Perez Mendez wrote:
On 11/3/11 10:51 AM, "Alejandro Perez Mendez"<[email protected]<mailto:[email protected]>>  
wrote:
What if the user has some attribute which is>  4K? For example a photo
(for biometric comparation).
I think that this situation should not be ignored, even when I can agree
it will not be the most usual.
Sorry, I wasn't saying the assertion wouldn't be>  4K, I was saying the
signature alone isn't that much bigger than a mediumish attribute unless
you add the cert.

I thought the>  4K thing was addressed by chunking it up. If not, you have
a problem.

That exactly the problem. Even splitting into 253-byte chucks, a RADIUS message 
cannot have more than 4K in total, including all the attributes. So, I think it 
would be required to find a solution for this, as it could happen, even without 
certificates and signatures.

I don't want to open a can of worms, but we could consider the idea of more 
compact coding formats, like JWT… There is a WG (JOSE, 
http://datatracker.ietf.org/wg/jose/) dealing with  this stuff, plus our OAuth 
colleagues, of course.

Be goode,

--
"Esta vez no fallaremos, Doctor Infierno"

Dr Diego R. Lopez
Telefonica I+D

e-mail: [email protected]<mailto:[email protected]>
Tel:      +34 913 129 041
-----------------------------------------






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