[keycloak-dev] Customising Keycloak Authentication flow

[Stian Thorgersen]

----- Original Message -----
> From: "Lakshmi Narayana VADALI (lvadali)" <lvadali at cisco.com>
> To: "Stian Thorgersen" <stian at redhat.com>
> Cc: keycloak-dev at lists.jboss.org
> Sent: Tuesday, 9 September, 2014 11:32:03 AM
> Subject: RE: [keycloak-dev] Customising Keycloak Authentication flow
> 
> Thanks for the quick reply.
> 
> We are planning to authenticate a device(client) which will come with its
> certificate. It seems two extension points may not work for the requirement
> we have.
> 
> The cert implementation for keycloak that is planned may not work for us,  as
> we need to handle this authentication differently.
>  For, e.g., we can’t configure the Realm client’s trust store to contain
>  certificates from all clients. In absence of  this we will
> need the client to provide its certificate which is signed by  a specific CA
> root authority and also  establish that it owns the private key
> for this certificate.
> 
> Can you please help us understand
> 1. what kind of hooks are planned and when they are planned?

We don't know how it'll look like yet. Hopefully this is something we can add by the end of the year. 
 
In the mean-time I'd suggest you:

1. Create a new jaxrs class with two methods, one that returns the nounce and another that authenticates the client, look at TokenService as a reference for this, specifically at TokenService.grantAccessToken.
2. Extend KeycloakApplication to add your new class
3. Create your own auth-server war - see 'project-integrations/aerogear-ups' as a reference for this

That should allow you to add the functionality you need without having to modify existing Keycloak code.

> 2. Will the hook help in  building  2-step authentication we need?(2-step
> authentication explained in my initial mail)

Yes, we'll include your use-case when designing the hooks

> 
> Thanks,
> Lakshmi Narayana V
> 
> -----Original Message-----
> From: Stian Thorgersen [mailto:stian at redhat.com]
> Sent: Tuesday, September 09, 2014 1:39 PM
> To: Lakshmi Narayana VADALI (lvadali)
> Cc: keycloak-dev at lists.jboss.org
> Subject: Re: [keycloak-dev] Customising Keycloak Authentication flow
> 
> Afraid at the moment we don't have any proper way to hook into this, but we
> are planning to add this in the future.
> 
> I'm assuming you're authenticating clients, not users? If so that's something
> we plan to add support for at some point.
> 
> We'll probably add two extension points, one for adding custom login for
> users (for example a hardware multi-factor auth or even fingerprint scanner)
> and another for authenticating clients (certificate, jwt, etc.).
> 
> ----- Original Message -----
> > From: "Lakshmi Narayana VADALI (lvadali)" <lvadali at cisco.com>
> > To: keycloak-dev at lists.jboss.org
> > Sent: Tuesday, 9 September, 2014 7:48:44 AM
> > Subject: [keycloak-dev] Customising Keycloak Authentication flow
> > 
> > 
> > 
> > Hi ,
> > 
> > 
> > 
> > Instead of Existing one step authentication(user/pass), We need custom
> > certificate based authentication which is 2-step Authentication as below:
> > 
> > 1. Bypass Login screen , instead generate nonce(UUID) and provide
> > intermediate Endpoint URL for Certificate based authentication.
> > 
> > 2. Client will come to Certificate based authentication with its
> > certificate and encrypted UUID. After Validating Encrypted UUID
> > 
> > and Client certificate server should generate “Access code”.
> > 
> > 
> > 
> > We have gone through 1.3 Beta source code and realised to achieve this
> > following code changes are needed
> > 
> > 1. Changes in TokenService class (login method) to bypass login form
> > and generate UUID.
> > 
> > 2. Preserve UUID and url parameters obtained during the call in
> > TokenManager .
> > 
> > 3. Redirect to custom_endpoint where client will submit its
> > certificate and encrypted nonce.
> > 
> > This end point will generate “access Code” once cert authentication
> > completed.
> > 
> > 
> > 
> > It looks we need to make changes in some of core files like
> > TokenService,TokenManager,OAuthFlows,...
> > 
> > Can you please let us know if there is any we can achieve this
> > customization just by hooking our code
> > 
> > (without modifying).
> > 
> > 
> > 
> > Thanks,
> > 
> > Lakshmi Narayana V
> > 
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>