How it works
How you use it
You receive installation instructions in your download. Here is a general run down of what you will have to do.
PHP Credit Card can be integrated into an existing order system, or there is an order form included that lets you start taking orders right away. It is also setup so that other payment methods can also be accepted.
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Upload a php script to your server. This php script contains all the code to encrypt and store the credit card details.
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Setup a table in your database (or setup a new database).
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Install the windows application (has an installer). Make sure you read the instructions before installing the windows application because otherwise you won't know what to do.
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If you are using the in built ordering system, the order details are sent via email to you when an order is placed.
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When you receive an order, you can open the windows app, and you will see the order ID in the list. Select the order ID and click "Fetch". NOTE: It is recommended to delete the credit card details once you have used them.
How it works (technical stuff)
The standard way credit card encryption works is that two keys are generated.
One key is a public key, which encrypts the credit card details.
The second key is a private key, which decrypts the credit card details.
The problem with storing credit card details is that security is only as strong as the private key. In most configurations, the private key is stored on the server with the public key - completely nullifying the purpose of having two keys.
With PHP Credit Card, the private key, the key that decrypts the credit card numbers, is stored locally on your computer. So even if a hacker gains access to your web server, the credit card numbers are still safe.
PHP Credit Card uses RSA encryption. RSA encryption is an encryption method where by the key used to encrypt a piece of data (the public key) is different to key required to decrypt the data (the private key).
PHP Credit Card uses a public key to encrypt the credit card details and then stores them in a database. (An SSL certificate is required for this).
To decrypt the credit card details, the windows application, which has the private key safely on your local computer, connects to the database and grabs the card details and then decrypts them.
The credit card details are then shown in the windows application.