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SSH (Secure shell) is a protocol for secure communication between computers to execute remote commands, transfer data and tunnel TCP connections.

2 votes

Is an SSH key with a passphrase a 2FA?

Given that the basic definition of multi-factor authentication leaves some room for interpretation (for example: Is an SSH key "something you have" or "something you know"?) … That said, it certainly seems possible in principle to build a compliant multi-factor cryptographic software authenticator that uses a SSH cryptographic key and a password you know. …
leopold.talirz's user avatar