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Re: [[cat-users]] eduroam-cat & EAP-TLS


Chronological Thread 
  • From: Stefan Winter <stefan.winter AT restena.lu>
  • To: Jan Tomášek <jan.tomasek AT cesnet.cz>, cat-users AT lists.geant.org
  • Subject: Re: [[cat-users]] eduroam-cat & EAP-TLS
  • Date: Fri, 13 Jul 2018 13:12:53 +0200
  • Autocrypt: addr=stefan.winter AT restena.lu; prefer-encrypt=mutual; keydata= xsFNBFIplEwBEADTSz+DS8nio+RSvfSLLfaOnCGi1nqpn8Pb1laVUyEvnAAzZ5jemiS88Gxf iDH6hUGlWzcaW0hCfUHGiohr485adbjxRksPngWgAt/1bRxpifsW3zObFjgog01WWQV5Sihl wc4zr8zvYbFA5BJZ6YdkR9C5J015riv5OS30WTjA65SSXgYrb7zJWPwmegTFwE093uBFvC39 waz3xYpVu5j87nO6w2MVQt/8sY2/2BFPEq+xfOajl18UEwc7w8SCgnZdlVNcmEK4UBvJuwS/ 1lsR2JeQa8Gu1EDxC7PRgMgNXsDSWnnBe9aVmfG54+6ILe1QH2dwk9sPBQT5w2+vjijrb3Dv 9ur+1kN+TNU2XE436jVpnnY/3OsLdix30STQn4Q/XOm7YoVMeDwwviefilRxzK0dXA+wKj92 T68Od82CFxuZqPAgBCVmWfQM91iK9piqFK+QP+R3vF6+NGDBdwbe68iVKs0v5L8XmbxBQndj pmo+lo2asmBR2TAIfZHaKdgtBw13u3GPVVKlg/Mpko8ki9JOSem2aFyi3kQEVKptWgXT3POl 97DWJzsR5VyKz6GOx9kJAEISRyLZwm0wqh8+9LCza5oeIKW381lzq1b9x30vOh8CBSQQJ+cG 9ko0yPHAj7Suw2TmPXx1qMctmE6Ahq82ZW30SljdZby8WQuR2wARAQABzTxTdGVmYW4gV2lu dGVyIChSRVNURU5BIGtleSAyMDEzKykgPHN0ZWZhbi53aW50ZXJAcmVzdGVuYS5sdT7CwXkE EwECACMFAlIplEwCGwMHCwkIBwMCAQYVCAIJCgsEFgIDAQIeAQIXgAAKCRDA3mo1ijncZj7/ D/99hVS+mJr8dSPCaDaUFFxBiT2eI1LoR8VKEerTCRw5BsdL6pN2eRJZ9NmsqWo1ynWVHEzO 91bNZ+oZGgyoNohcBAI7p+r0qUTzkyqwdZO4kMm0pqKoM9xkP3tf2mjGujKjOz4Y7S7wnz2Z FokeUsecoRVJF/++/qHnmeWLn44J1HUKLHYCjMu+QXGOgGXgz024jQ5eUrnPwzNp0Z90AFVH lWC+bymty/ToIUUCQqS5Ff0jzdWLd8U695OG9iGvjBQT1LdEjsfbAwuKV5UcnpxNqUpUwKa5 9hdX5/2cMZP07FI1UXwnBlxa8rJfdb13FLjSKX4vUUHedYUZMjMPgcwl1a+zGE22lHiSQWgP 8QLA/W3BLsi22ERCEPZBfexOeOtaWIItDIz18fIaQoMDoRPshzar0JI2CzLYsyeKySAtYJEH FVoLmMvhkwzBmgqA/BEswUA67CfCr1jFHRXdpmWM7YkyAmMa9q6LwquWKS5+MXlUXe/3oZUc gpw/T9Uuy3Jo3RdS7B3jFcWaVr6KsO/A9u1gr/aYn5M+iJTQSj4vzqtkQaJTpSspRZoKa66H Zt3IwSYiDiYZqtM83ynuj9kjnZzGfnuTaNIi996q6Mptr33mOzIE1wmMqnJYwTr3EcNtf483 q/qrJwh5ES8Q9xY7aat/ZcSl8fKubW4TlfVr8c7BTQRSKZRMARAAvBPpn7FQq7LQ5glohtbL 6XIEo1U4X67S0TzUYieENSWSVYuWYIhCBldmWdmH8Bpj/qHeqdon7v+SLtR4WngzMR9toupK cFfHnbP9kpazTSB2ySHxXWGX1gJOpPXdCcg9iveKBHEsDn00ThTcPsvtXpnnzET16pXIvOXO 0bxTmVZ4INIF1SWgvYma/g8kBbgXLpkj8tOywBqFiiYPEZlDeCxDHiMgUDh6olda9K/0TZFT dMPUgjKuubfAeaDNCOrVt4RjmFOaRLikcZocmgJhm3z/j25x7/mnNu+0di1H/S67YGQJ+pqC FInzIXDx7aRW2+JCiqsY2X3xOPWZZzjyis5SNnfOcPH3gt2hYz1fy+thsBGf4NgCN01JRqIJ 2/MOQCgUdwh+9l8xqaJvCkUHM4hVh4W62MAe1u7UEqQbvvNEqxM5034vcvlE+/LRkrDCspw+ 2YJ9QyroLerVRwW5DVleP8Ifi8VB3yD80nqXYs9aqRy0BkDNIQ43ERhESMt8dJqrNkxgC6pe mZrhNwyDh+hy2kPNGQh/iBpdKuH1o3E24TIZoV2v3YHvzob7aAYHddE/PofAXhJW7I9mAs+H dWDmnI8ckuPDFpFH+Y/BFGvEXgcnJAJ1wEvf+4LuiIi0MHjR4EWFn9vvoFDAIqD10h3FSd3D 59HGtdSsNn4XaCsAEQEAAcLBXwQYAQIACQUCUimUTAIbDAAKCRDA3mo1ijncZhBtEACL036d djc5pFoYIdoUY1vT8SMXJNquewCnL1quDADzqDZFU5GNlQEy10krSfBwlTb9ahTtE0JFrOdZ wUZtoa1Pgfr8nU6KOgrXPHbNjS/9dyc5CwGVVIpOavIm2CsMVDJ9LCF/NT+u/t1k6eGfHhPV l3dUQyDa/lzc1chKUIVQYQkFmr0A/iXP+29lFCaI+IeyU0bSdZhezDwUROn5vEx+fiPZyHDS hCb+BxJv/o2LQp9JHenCiSbO+ioRZdxgbWfoKBuXOfmSStqMWXas/gZ5vS3xq72LNtKPRxgp jX3P8Zml1XDqpcBau7eK75VKE0Yd06YxnUIsbcEzInUc3uzW/u0DFpXYkMJb0XIvJyUt5yYP KfV13N8kSkPi5pLxm8yuftXMzfgeFMR7nafY3glTVj/TxElzg6xeZNqfC2ZjIbBtZg9ylHU8 u8wwB+dX282crs0R3N9A064C71/cXlBqcjzjlKH2NUIWGxr+od3TXFIFjszSU3NgMPKrWNhF LLwS81MpbkOe73s6aDhS8RDyNucoxtKXriLR+4Xiu4+pyj5ukYP1JqpB3ZobY/XZgCnJMye+ 7xeTpIDJ1LPORxM3NNAElyb26lxAK2P+km+EpI0Zzz6rNSCfg5jYQ474+e/GBgaSG4MlaPoZ +XAfN46u1Xjjv1/AkkA4IA6m5zP5og==
  • Openpgp: id=AD3091F3AB24E05F4F722C03C0DE6A358A39DC66; url=http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xC0DE6A358A39DC66

Hello,

> I've question from institution which is using EAP-TLS, they get
> interested in eduroam CAT, but eduroam CAT doesn't support EAP-TLS if I
> correctly understand.

You can review the EAP type support for all platforms by visiting
https://cat.eduroam.org -> About eduroam CAT

You'll see that EAP-TLS is supported on many platforms, but not all.

This is due to the fact that we need to craft installers which configure
the system to use client certificates - but we can't pack the client
certificate itself, because we don't have and don't want it.

The client certificate needs to be installed by arbitrary other means,
and so we rely on the device capability to ask the user which
certificate to use, and where to find it.

The UI for that is typically out of our hands and works with varying
degrees of satisfaction.

> Is there any chance that CAT v2 will support it anyhow?

CAT 2.0 will continue to support EAP-TLS just fine :-)

> I think that hosted eduroam IdP was designed to use EAP-TLS including
> user certificates distribution, they are quite skill full so they might
> be possible to run CAT on their own and integrate it with their CA. Are
> source codes available? Or maybe documentation?

Even better: we have *both*!

The source code is at

https://github.com/GEANT/CAT

and (deployer's) documentation is in the subdirectory "tutorials", e.g.:
https://github.com/GEANT/CAT/blob/master/tutorials/Configuration.md

The source code is entirely shared between the "traditional" CAT and
eduroam Managed IdP - as you rightly pointed out, they do almost the
same job except that eduroam Managed IdP produces and embeds a client
certificate directly, rather than relying on the external referencing.

And here is even more goodness:

We have an extension point that allows to plug in your own CA just fine.
Look at the config-confassistant.conf setting

'CA' => ["type" => "embedded"]

which you can change; you then only need to write actual code for that
other CA in the respective switch/case statements elsewhere in the code.
All of which should be contained in the single class
core/SilverbulletCertificate.php . I'm sure a good developer will find
them. :-)

If you have any issues or questions which are more code-related than
usage-related, please hop over to the development mailing list
(cat-devel AT lists.geant.org).

Greetings,

Stefan Winter

--
Stefan WINTER
Ingenieur de Recherche
Fondation RESTENA - Réseau Téléinformatique de l'Education Nationale et
de la Recherche
2, avenue de l'Université
L-4365 Esch-sur-Alzette

Tel: +352 424409 1
Fax: +352 422473

PGP key updated to 4096 Bit RSA - I will encrypt all mails if the
recipient's key is known to me

http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xC0DE6A358A39DC66

Attachment: 0xC0DE6A358A39DC66.asc
Description: application/pgp-keys

Attachment: signature.asc
Description: OpenPGP digital signature




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