Access SFTP folder using SSH keys

Hello,

In my project I have create a file with data from a flow and post this file on a sftp folder.
Note that I want to use SSH keys for authorization.
According with [url=https://documentation.decisions.com/docs/upload-a-file-via-sftp-ftp]Upload File with SFTP/FTP - SFTP/FTP (decisions.com)[/url] documentation, Yes! we can post files on FTP/SFTP using either user / psw Or SSH keys authentication.
To use SSH keys first step is to create them, here I am stuck because I do not know where to create them, on my machine? On Decision platform? I assume on Decision platform , but here I do not know where to create them.
Second, once the keys are created, do I need admin privileges to finish all settings on Decision side?

Thanks
John Balta