To receive payments via Android Pay, you need to create a key pair (private and public key) and transfer the public key to Android Pay. To create a key pair and export a public key, follow these steps.
In the top panel of your personal account, select Administration > Certificates > Android Pay Certificates.
To form a key pair, in the section Work with keys click on the button Generate key pair.
In the window that appears, configure the settings referring to the table below.
Click Save – the created key pair will be displayed in the table below.
Click on the created key pair and in the Working with keys section click on the button Upload CSR.
Depending on your browser settings, a message may appear prompting you to open or save the public key file.
Save the file.