How to set up secure File Transfer Protocol

Hello all,

I am trying to configure a secure file transfer protocol in a custom HCM Extracts, when I was configuring the File Transfer Protocol, under the security section I noticed that there was only the option to use username and password.
Is there a way to use an encryption key instead?

Navigation: My Client Group> Data Exchange> File Transfer Configurations

As seen below, only the authentication type Password is present.

Environment version: 24C