create config option for SSH key authentication with token

[kotowicz]

in your featured example, you are saying:

Note that key authentication with SSH never requires a token

It would be great if one could control the login behavior through simple config options:

• password only
• key only
• password + token
• key + token
• plus any (?) combination of above options

does this appear feasible?

[soxwellfb]

Also looking for key+token.

Apparently possible, but carries a risk: https://sysconfig.org.uk/two-factor-authentication-with-ssh.html