OAuth from KEYROCK / KEYSTONE
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Important: The implementation of keyrock into FI-WARE is going to change from Ruby to Python.
Old version won't be supported any more.
End of march 2015 shell come the new release.
Functionality is the same - hopefully no changes have to be made in your Application. 
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example with NODEJS

Open Programme/Putty/putty.exe
Load SESSION
Connect to server
login: root
you are located: SERVER ROOT/root
cd /
you are located: SERVER ROOT

sudo apt-get install nodejs
sudo apt-get install npm

Login at account.fi-ware.org
Register your applications
<HOST> or <IP>
Generate a Organisation and set up some roles with rules (provider, owner what ever)
Doubleclick on your registed application.
NAVIGATION RIGHT BOTTOM => OAuth2 Credentials -> copy the ClientID and the Client Secret
https://account.lab.fiware.org/applications/

download oauth2-example-client-master from github
https://github.com/ging/oauth2-example-client

open config.js
Configure  OAuth2 credentials
(ClientID and Client Secret)
in config.js file.	You will find them in your IDM	
https://account.lab.fiware.org/applications/
set URL to server root or URI of the oauth2-example folder and CALLBACK URL to /login or oauth2-example folder/login

For static page open server.js
line 59		res.redirect('/bindex.php');
set the file name to the file where to redirect to.
Not possible is it to use 'index.*'

Save and Upload all files of the example to the server

If Apache is running, stop Apache

/etc/init.d/apache2 stop
/etc/init.d/apache2 start

To start NODEJS server
sudo nodejs server.js  

To stop the NODEJS server
CTRL+C 
  
Save and upload to the server

Load the URL of your Application in the Browser

REF.:http://de.slideshare.net/jcague/fiware-account-and-oauth-solution

FI-WARE Workshop2 on https://www.dropbox.com/

To set up OAuth with Apache and PHP/RUBY/PYTHON refer to Oauth pages and second example.