KRB5KDC_ERR_ETYPE_NOSUPP in protocol transition

Luke Howard lukeh at
Tue Jul 28 16:10:01 EDT 2009

On 27/07/2009, at 11:17 AM, Nikhil Mishra wrote:

> Hi All ,
> I made some changes in krb5_get_credentials to work for protocol
> transition and constrained delegation .

Sorry to duplicate the effort: you might want to take a look at the  
users/lhoward/s4u branch in SVN.

That contains my in-progress implementation of S4U2Self and S4U2Proxy.  
Presently only S4U2Self (W2K3 protocol) is tested. (The W2K3 protocol  
has some weaknesses in that the S4U2Self request is not bound to the  
TGS-REQ. This was corrected in W2K8, but I haven't been able to get  
that to work yet.)

As for your immediate problem, I'm not sure, because I haven't tested  
S4U2Proxy yet...


-- Luke

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