Creating a Signature Key

[sourcecafe]

Hi,

I've recently joined a new payment system and they run via Authorize but I'm having issues when a payment fails.

It's running on MD5 Hash and I need to change/upgrade this but can't seem to sign up or generate a key.

I've tried phoning and the offices are closed during the stated opening hours by the pre recorded message.

Any help would be great, thanks!

[Renaissance]

@sourcecafe 

You go to your authorize.net merchant interface and go to API credentials. Select the option to generate a new signature key.  It sounds like you are using SIM or DPM, which means the next step will be to update your MD5 hash function to a sha512 hash function.  You will need to update the server side code. Confirm what integration method you use before getting too deep into this. You use a different string to calculate the hash depending on what method you are using.