Help using PKINIT (MIT)

[Kevin Coffman]

It doesn't appear that the KDC is offering PKINIT as a
pre-authentication option (pa_types 15,16,17,18).  I believe the KDC's
certificate looks OK, but there are other things required in the KDC's
configuration before it will offer PKINIT.  (i.e. the plugin must be
available, and initialize properly.)  Do you have debug output from
the KDC's [plugin] initialization?


On Mon, Apr 4, 2011 at 11:14 AM, JAKOBI Pascal
<pascal.jakobi at thalesgroup.com> wrote:
> Kevin
>
> It took me a while to get back to the issue. Apologies for this.
> Essentially, here is what I get when running kinit with "DEBUG" set.
>
> ./kinit -X X509_user_identity='/C=FR/O=BioNet/CN=user/' user at BIONET.FR
> get_plugin_data_sym(preauthentication_client_1)
> init module "Encrypted Challenge", pa_type 138, flag 1
> get_plugin_data_sym(service_locator)
> get_plugin_data_sym(service_locator)
> get_plugin_data_sym(service_locator)
> preauth data types before sorting: 2 136 19 13 133
> preauth data types after sorting: 2 136 19 13 133
> salt len=-1; preauth data types: 2 136 19 13 133
> trying modules for pa_type 2, flag 2
> trying modules for pa_type 136, flag 2
> etype info 0: etype 18 salt len=-1
> etype info 1: etype 17 salt len=-1
> etype info 2: etype 16 salt len=-1
> etype info 3: etype 23 salt len=-1
> trying modules for pa_type 19, flag 2
> trying modules for pa_type 13, flag 2
> calling internal function for pa_type 133, flag 2
> trying modules for pa_type 133, flag 2
> calling internal function for pa_type 2, flag 1
> preauth2.c:708: salt len=-1; *etype=18 request->ktype[0]=18
> Password for user at BIONET.FR:
> key type 18 bytes a3 27 ...
> enc data { type=18 kvno=0 data=fd 91 ... }
> get_plugin_data_sym(service_locator)
> get_plugin_data_sym(service_locator)
> get_plugin_data_sym(service_locator)
> preauth data types before sorting: 19
> preauth data types after sorting: 19
> salt len=-1; preauth data types: 19
> etype info 0: etype 18 salt len=-1
> trying modules for pa_type 19, flag 2
> [root at client bin]#
>
> Attached are a bunch of information that may help.
>
> Thanks again for your help.
> P
>
>
>
> On 31/03/2011 16:44, Kevin Coffman wrote:
>
> On Thu, Mar 31, 2011 at 7:28 AM, JAKOBI Pascal
> <pascal.jakobi at thalesgroup.com> wrote:
>> Hi there
>>
>> I need help in order to get PKINIT working on Fedora 14.
>> I have a running kerberos server with krb-server, krb-server-ldap and so
>> on (1.8.2).
>> I also have installed krb5-pkinit-openssl.
>>
>> The stuff works like a charm when running in "standard" kerberos, i.e.
>> w/o pkinit.
>>
>> Then we tried to set up pkinit according to the instructions found at
>> http://k5wiki.kerberos.org. In particular, we checked carefully, our
>> certs.
>
> Perhaps you could list your certificate information here for both the
> user and KDC certificates (the output of "openssl x509 -noout -text
> -in YOUR.CRT").
>
>> However, the behaviour does not seem correct.
>>
>> We issue a kinit -X x509_user_identity=<DN found in the client cert>
>> <principal> on the client side (another Fedora instance with software
>> certs).
>> With Wireshark, we see that an AS-REQ is sent to the server. However, it
>> does not seem to convey any certificate (pa-data type = 149).
>>
>> Then the server replies with ERR_PREAUTH_REQUIRED (the principal that is
>> used has its preauth option set).  Is this normal ?
>
> This is normal.   If the KDC's pkinit preauth plugin is properly
> configured (valid certificate and kdc.conf configuration options), one
> of the preauth options it should return is PKINIT.  (14,15,16, or 17)
> The client should then send the PKINIT preauth information in its
> subsequent request.  If it is accepted by the KDC, there shouldn't be
> a pasword prompt.
>
>> As a result of this, the standard AS_REQ/REP procedure seems to be
>> played (as a password is requested on the client side).
>>
>> The problem is that even when recompiling pkinit with DEBUG set, we
>> cannot see anything....
>
> Are you running your KDC in the foreground?  Debug output will go to
> stderr or stdout.  Verify that the PKINIT preauth plugin is
> successfully loaded and properly initialized.
>
>> Any help (very) greatly appreciated.
>>
>> Thanks
>> Pascal
>>
>> --
>> Pascal Jakobi
>> Sr. Architect, Thales
>> 1  av. A. Fresnel
>> 91767 Palaiseau, France
>> Tel. : +33 1 69 41 60 51
>> Mob.: + 33 6 87 47 58 19
>>
>> ________________________________________________
>> Kerberos mailing list           Kerberos at mit.edu
>> https://mailman.mit.edu/mailman/listinfo/kerberos
>>
>
> .
>
> --
> Pascal Jakobi
> Sr. Architect, Thales
> 1  av. A. Fresnel
> 91767 Palaiseau, France
> Tel. : +33 1 69 41 60 51
> Mob.: + 33 6 87 47 58 19
>