Help: Radius Accounting Request and Message Authenticator

2010-03-30 Thread Alessio Grasso 
Hi all, 
I'm a ICLoS's software engineering and I'm developing a WiMax ASN. 
I had already develop the client authentication and authorization modules for 
freeradius 2.1.8, successfully (EAP-TTLS). Now I'm building the Radius 
Accounting module but I have a problem with the Request-Authenticator find in 
the message of Accounting-Request. When I send a Radius Accounting-Request, the 
server's log shows:

Received packet from 192.168.2.130 with invalid Message-Authenticator! (Shared 
secret is incorrect.) Dropping packet without response.

I think it's wrong to calculate HMAC-MD5 (is it exactly the same to the case of 
Authentication Request?). I'm studing on the RFC 2866 but I found that there 
are only 16 octets to zero in the Authenticator field.
Where can I found further informations?

Thanks in advance,

Alessio Grasso
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Re: Help: Radius Accounting Request and Message Authenticator

2010-03-30 Thread Alan DeKok 
Alessio Grasso wrote:
 I'm a ICLoS's software engineering and I'm developing a WiMax ASN. 

  Well... this is the FreeRADIUS list.  It's for questions about FreeRADIUS.

 I think it's wrong to calculate HMAC-MD5 (is it exactly the same to the case 
 of Authentication Request?). I'm studing on the RFC 2866 but I found that 
 there are only 16 octets to zero in the Authenticator field.
 Where can I found further informations?

  See the *other* RFCs, or read the FreeRADIUS source code.

  Alan DeKok.
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