Setup Cybersource Gateway

What type of keys is the Basic Settings > Online Payments > Add Gateway looking for to enable Cybersource payments? In the Cybersource GUI, I can create security keys for the following APIs but none seem to be what is required in Invoice Ninja - Simple Order API, SOAP Toolkit API, SCMP API.

Thanks

CyberSource Secure Acceptance Silent Order POST Gateway

https://github.com/dioscouri/omnipay-cybersource/blob/master/src/Gateway.php