Shopify/active_merchant — pull request #494 by samlown (2012-11-01 17:12:37+00:00)
Title: Redsys (Catalunya Caixa) Gateway Support

I've managed to throw together a fairly straightforward implementation to access the Spanish "Redsys" payment gateway network. This system used by many banks in Spain and particularly well supported by the Catalunya Caixa bank.

Provides the standard operations, but does require an order_id in a specific format for authorization and purchase. Also requires the amount to be included in the void request (unfortunately).

Would be very grateful if this could be accepted. Please let me know if you'd like any remote test details or see anything wrong in the commits.