How hard would it be to make or modify a distro so it uses multiple passwords or even asymmetric keys to gain root access?

I'm thinking of dual control rather than normal MFA: two separate administrators would each hold a credential/private key, and both would have to authorize certain root-level operations. For example, two independent signatures might be required before a root shell or security-critical command could execute. I'm curious how much of this could be... Weiterlesen