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You are bidding for the construction of a new ZenCart Payment Module to support payment via the new CardKnox processing system. I am posting the API files so that you can see how it works and what needs to be done. Here is the most important descriptive part:
On the form page where cardholder data is captured, the 'submit' button directs the customer's browser to the CardKnox gateway. CardKnox captures the cardholder data, and returns to the browser a redirection back to the client website. The data sent back to the client website will enable the client to retrieve the full results of the requested action, and any client-specified data fields sent through the CardKnox gateway.
The CardKnox gateway expects the submitted form to specify the page on the client site to which to return upon successful completion of the requested action, as well as a page to which the customer is directed in case of a validation or other error. The CardKnox API includes validation methods even for field...
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