[OpenID] Problem creating enc_mac_key

[coen at rtlinteractief.nl]

Hi,

I've trouble understanding how to build the enc_mac_key element for the 
association. How I read the specs, the value and description of the 
element do not seem to match. My test client is also not very helpful 
since it immediately jumps to check_immediate without an assoc_handle 
which means something went wrong with the association.

I read something like this:
the value says I should XOR the Mac key with my hashed, secret DH key.
the description says I should encrypt my Mac key with my secret DH key 
and then hash the result, although I'm not entirely sure where the 
hashing goes here.

Can somebody explain, perhaps in pseudo code, how to build/assemble the 
enc_mac_key? Again, sorry for the n00b level.

Thanks a bunch!

-- 
Met vriendelijke groet / With kind regards / mit besten Grüßen,



	
	Coen Schalkwijk
Software Engineer

	coen.schalkwijk at rtl.nl <mailto:coen.schalkwijk at rtl.nl>

	coen at rtlinteractief.nl <mailto:coen at rtlinteractief.nl>

	+31 (0)35 671 8915


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