OpenID-eID

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Here are my attempts to create an OpenID provider based on the Belgian eID

Install packages

Let's get apache2, php5 and openssl stuff: 

apt-get install apache2-utils apache2-mpm-prefork libapache2-mod-php5 php5 openssl ssl-cert

Setup apache server with SSL

Create self-signed certificate 

make-ssl-cert /usr/share/ssl-cert/ssleay.cnf /etc/apache2/ssl/apache.pem

Little problem: by default the certificate is valid only 30 days, you've to edit make-ssl-cert script and add "-days" options, e.g: 

openssl req -days 1024 ...

Verify generated certificate 

openssl x509 -text -in /etc/apache2/ssl/apache.pem

Start from ssl example config 

zcat /usr/share/doc/apache2.2-common/examples/apache2/extra/httpd-ssl.conf.gz \
  > /etc/apache2/sites-available/default-ssl

Activates ssl module 

a2enmod ssl

Activates ssl virtualhost 

a2ensite default-ssl

Edit /etc/apache2/sites-available/default-ssl 

SSLCertificateFile /etc/apache2/ssl/apache.pem
#SSLCertificateKeyFile not required as apache.pem contains also the key

And the usual stuff 

DocumentRoot "/var/www"
ServerName ...
ServerAdmin ...
ErrorLog /var/log/apache2/error.log
TransferLog /var/log/apache2/access.log

To activate only the secure ciphers: 

SSLCipherSuite HIGH:MEDIUM:!ADH
SSLProtocol -ALL +SSLv3 +TLSv1

Adding Belgian Government Root certificates

You can extract the Belgium Root CA and the Citizen CA from your eID: 

pkcs15-tool --read-certificate 04 > /etc/apache2/ssl/ca/belgium.crt
pkcs15-tool --read-certificate 06 >> /etc/apache2/ssl/ca/belgium.crt

Then add client certificate requirements to /etc/apache2/sites-available/default-ssl 

SSLCACertificateFile /etc/apache2/ssl/ca/belgium.crt
SSLOptions +StrictRequire
SSLVerifyClient require
SSLVerifyDepth  10
<Location />
 # accept only certificates emitted by Citizen CA:
 SSLRequire %{SSL_CLIENT_I_DN_C} eq "BE" \
   and %{SSL_CLIENT_I_DN_CN} in {"Citizen CA"}
</Location>

According to the doc, because of a bug in Internet Explorer, you also need to add GlobalSign Root certificate...

Retrieving citizens' certificate information

The user's distinguish name can be retrieved from php with 

$_SERVER['SSL_CLIENT_S_DN']

And the user's name with 

$_SERVER['SSL_CLIENT_S_DN_CN']

TODO: cf apache SSL reverse proxy proposed by the government

Add to /etc/apache2/sites-available/default-ssl: 

SSLUseOCSP         on
SSLForceValidation on

Enable ssl_error_module: 

LoadModule ssl_error_module modules/mod_ssl_error.so

And add to /etc/apache2/sites-available/default-ssl: 

<IfModule mod_ssl_error.c>
SSL_Error_DefaultURL "/error/invalid.html"
SSL_Error_URL  23   "/error/revoked.html"
SSL_Error_URL  10   "/error/expired.html"
</IfModule>

cf doc...

Hacking phpMyID

Details on the patch

  • remove HTTP Digest for the authorization step
  • redirect authorization to HTTPS as we'll deal with SSL client certificates
  • TODO

Status: 

http://id.yobi.be/?openid.mode=login&id=ae96fba0cd9515cd

This identifies me properly with my card as well as 

http://id.yobi.be/?openid.mode=login&id=philippe.teuwen

Todo:

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