# Visa Digital Benefits Platform (VDBP)

## VDBP Authentication Methods

#### Two-Way SSL

As one of the security protocols, Visa Developer sandbox secures its connections with clients by means of Two-Way SSL (Mutual Authentication) method. Refer to the link below to quickly learn about how to get credentials to start building with Two-Way SSL.

Visit the [Two-way SSL Guide](https://developer.visa.com/pages/working-with-visa-apis/two-way-ssl) to learn more.

#### X-pay Token

Some Visa Developer APIs require an API Key-Shared Secret Authentication, which Visa refers to as x-pay-token. To invoke an API using x-pay-token, you will need an API Key and a Shared Secret, which is provided via the link below.

Visit the [X-pay Token Guide](https://developer.visa.com/pages/working-with-visa-apis/x-pay-token) to learn more.