Does jain-sip support AKAv1-MD5?

Hi all,

    I'm using jain-sip to develop a sip applications. But when I try to 
REGISTER on the server, I met some authentication errors.

    After I send my first request, I received a "401 Unauthorized - 
Challenging the UE" response, which met my expectation. But the response 
told me that the digest algorithm is AKAv1-MD5, the WWW-Authenticate Header 
is as below:

    [First request]
    Authorization: Digest 
username="[email protected]",realm="xxxx.net",nonce="",response="",uri="sip:xxxx.net" 
algorithm=MD5

    [First response]
    WWW-Authenticate: Digest realm="xxxx.net", 
nonce="GZhpQAKhO4boNQw1u/Q7SZ+GvDJ/vwAA9+koVntxyRY=", algorithm=AKAv1-MD5, 
ck="aff983a8625a31cbbee429825f7a9560", ik="7f77620d8ec2fa6b9bb77fd0a6d5bebf"

    And I also tried to add "algorithm=MD5" into my request, hope that can 
change the server's algorithm, but take no effect.

    I spent a whole day but I can't find any implementation of AKAv1-MD5 in 
jain-sip or in any other java projects.

    Could anyone give some help on AKAv1-MD5? Thanks a lot!


Mason Bai
[email protected]