This is a HDFC payment payment gateway module used for the payment processing on Drupal commerce enabled sites. We have worked closely with HDFC guys to come up with this module andhave successfully implemented in 2 of our live projects already for past 2 months. We have also created a demo site to just test this module: http://myndsets.in/commerce_kickstart2.
You can download a copy of our project from here:
git clone http://git.drupal.org/sandbox/pvinayv/2087547.git
Here's the sandbox page we created: https://drupal.org/sandbox/pvinayv/2087547