Mutual SSL
DOCS
Last updated: Aug 15th, 7:34am
Important: Mutual SSL is a limited-release solution available only to select partners at this time. For more information, reach out to your PayPal Account Manager.
Mutual SSL provides additional channel protection when invoking PayPal APIs.
Once Mutual SSL is established through signed certificates, it helps verify that the client is communicating with the right API. It also makes sure the client properly presents its identity to the API.