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Copy edited (e.g. ref. <https://en.wiktionary.org/wiki/theoretical#Adjective> and <https://en.wikipedia.org/wiki/Two-factor_authentication>). Introduced abbr. "2FA".
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edit approved Oct 31, 2019 at 18:11
Peter Mortensen
edit approved Oct 31, 2019 at 18:11
Peter Mortensen
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Is an SSH key with a passphrase a 2FA?

This is a really theoriticaltheoretical question, but if I use an SSH key with a Passphrasepassphrase to login on a server, could this be considered as a two factor-factor authentication (2FA)? 

Indeed, I need the SSH  (private) key, which could be considered as the first factor, and the passphrase which could be the second one.

If we compare to a single password for login, I see two 'elements' with a passphrased SSH key.

Is SSH key with passphrase a 2FA

This is a really theoritical question, but if I use an SSH key with a Passphrase to login on a server, could this be considered as a two factor authentication? Indeed, I need the SSH(private) key, which could be considered as the first factor, and the passphrase which could be the second one.

If we compare to a single password for login, I see two 'elements' with a passphrased SSH key.

Is an SSH key with a passphrase a 2FA?

This is a really theoretical question, but if I use an SSH key with a passphrase to login on a server, could this be considered as a two-factor authentication (2FA)? 

Indeed, I need the SSH  (private) key, which could be considered as the first factor, and the passphrase which could be the second one.

If we compare to a single password for login, I see two 'elements' with a passphrased SSH key.

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Antonin M.
Antonin M.
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Is SSH key with passphrase a 2FA

This is a really theoritical question, but if I use an SSH key with a Passphrase to login on a server, could this be considered as a two factor authentication? Indeed, I need the SSH(private) key, which could be considered as the first factor, and the passphrase which could be the second one.

If we compare to a single password for login, I see two 'elements' with a passphrased SSH key.