Info on EAP module development on Windows

Thread: Info on EAP module development on Windows

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Info on EAP module development on Windows
	2007-02-13 00:55:30
Hi,   We are developing an EAP module for the Windows Mobile 5.0 as per the documentation provided at the MSDN site for the EAP extension development. http://msdn2.microsoft.com/en-gb/library/aa363504.aspx We succeeded in writing the whole EAP module, specifically we wrote a EAP-PEAP.  The whole EAP authentication goes through well with the AAA server(RADIUS) with the extension dll we wrote, and we finally receive the outer EAP success, sent as part of the Access-Accept from RADIUS, which indicates the EAP authentication has succeeded. But as per the documentation in MSDN, we are supposed to pass the MPPE-Send keys and MPPE-Recv Keys from the RasEapMakeMessage function using the pUserAttributes member of the pEapOutput structure in the final step. But its not much clear on how the pUserAttributes is to be filled with these keys. We filled in the pUserAttributes pointer from what we can make out from the following MSDN link in the Remarks section at http://msdn2.microsoft.com/en-gb/library/aa363518.aspx We tried a lot of combinations but nothing seems to work. When we sniffed on Access Point the supplicant(native on on Windows) doesn't seem to respond to the EAPOL key request at all as part of the 4 way handshake for the WPA key(MSK) generation. I have seen couple posts on this topic "passing mppe keys using pUserAttributes member of PPP_EAP_OUTPUT" with the same query, but no replies till date, do we have a solution for this. Sadly there isn't much documentation on this at the MSDN. Thanks, Vijay