The mechanism and algorithm for SIP authorization is taken from 
http://www.ietf.org/rfc/rfc2617.txt
There is an algorithm parameter which is normally set to "md5".
I would've thought this could be changed to something else.

Only problem then might be interop!
If the server can't do "sha1", is there a way for it to indicate that it failed 
due to an unsupported algorithm?  Is there a way to indicate that it can only 
do md5 in the hashing response?

Regards

Attila


-----Original Message-----
From: [email protected] on behalf of Kevin P. 
Fleming
Sent: Wed 23/03/2011 18:47
To: [email protected]
Subject: Re: [Sip-implementors] about md5()
 
On 03/23/2011 05:04 AM, Olle E. Johansson wrote:
>
> 23 mar 2011 kl. 10.48 skrev pranab sahoo:
>
>> Hi All
>> Thanks all of you providing a platform to clarify sip doubts
>>
>> can we use any other algorithm than md5 during registration process?
>>
>>
> http digest auth with MD5 is the current implementation - even though many of 
> us believe we should move to SHAx.

What is required for that to become an option? It looks like the 
language in RFC 3261 really wasn't written to provide an easy method to 
make additional digest algorithms available. If that means that doing so 
would require revising RFC 3261 itself... that seems like a completely 
impractical task :-)

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
Jabber: [email protected] | SIP: [email protected] | Skype: kpfleming
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at www.digium.com & www.asterisk.org
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