[pptp-server] FW: MsChapv2, RFC2759

[Varrian Hall]

>  -----Original Message-----
> From: 	Varrian Hall  
> Sent:	Monday, April 09, 2001 9:52 AM
> To:	Varrian Hall
> Subject:	MsChapv2, RFC2759
> 
> 
> 
> 
> Hello Everyone,
> 
> My name is Varrian Hall.  I am in great need of MSChapv2 assistance.
> Presently, my authenticator calculation(20 octets made into 40 hex digits:
> "S=40 hex digits") does not equal the 40 Hex digit(excluding "S=")
> response.  I have written my code based on RFC2759.  My
> GenerateAuthenticatorResponse( ) function is where the problem lies.
> Again, it's based on the GenerateAuthenticatorResponse(  ) function in
> RFC2759.  I'm thinking it must be a new update, because some of the code
> in GenerateAuthenticatorResponse( ) is used elsewhere and it is working
> fine.  The SHA.. functions are in ChallengeHash and it works fine.  The
> MD4.. functions are in NTPasswordHash, and it works fine.  My problem is
> in the last SHA_Final function call in GenerateAuthenticatorResponse( )
> that produces the 20 octet result.  This result(expanded to 40 octets)
> never matches the result sent to me from a Win2K pc.  
> These results have to match in order for the server/client to be
> authenticated.   
> Could you please help [Varrian Hall]  .  Any newsgroups or websites you
> know of would be greatly appreciated.
> 
thanks, 

>     varrianh at computone.com
>     Varrian Hall
>     Computone Corp
>    770 625 0000  x1201
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