To set up the "Authorize.Net: AIM" payment method in X-Cart you should follow the steps below:
1. Enable the "Authorize.Net: AIM" payment method: log into X-Cart as administrator, then go to the Administration -> Payment methods page and select the check box to the left of "Authorize.Net: AIM".
2. Set a MD5-Hash value: log in to the Authorize.Net back-office, go to the Account page, scroll down to the Security Settings section and click on the MD5-Hash link.
3. Request a Transaction Key: log in to the Authorize.Net back-office, click on Settings and Profile, under the Security heading, click on Obtain Transaction Key. You will be prompted to submit the Secret Question/Answer for the account in order to receive your transaction key.
4. Update the "Authorize.Net: AIM" payment method settings: log into X-Cart back-end, go to the Administration -> Payment methods page, click on the Configure link to the right of the "Credit Card processor AuthorizeNet: AIM":
Account type: Authorize.Net
API Login ID: enter the login to your Merchant account.
Transaction key: enter the transaction key you have received from Authorize.Net.
Currency: select the currency to be used in Authorize.Net transactions.
MD5 hash value: enter the MD5 Hash Value to use the MD5 security checks.
Test/Live mode: select test or live mode from the drop-down box.
Order prefix: any value, can be blank
Note: If you choose LIVE mode in the "Test/Live mode" selectbox, please make sure LIVE mode is set up in your merchant account settings.
Authorize.Net supports 3-D Secure Payer Authentication. Go to General settings -> 3-D Secure Transaction options to enable it.