Using two-factor authentication for SSH

Re:Using two-factor authentication for SSH by superuser2 on Tuesday January 12, 2016 @02:29PM (#10889711)

Hardware tokens are general purpose computers that have been locked down to the vendor's walled gardens. Yubikey is a JavaCard (in USB stick form factor) running some closed-source applets. There is a key that would allow you to load your own applets onto it but Yubico won't tell you what it is.

From a software freedom perspective, hardware tokens/smart cards are no better than smartphones.

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Re:Using two-factor authentication for SSH by Freak_NL on Tuesday January 12, 2016 @03:38PM (#10890179)

There is a crucial difference here. With FIDO U2F I am not limited to Yubico's offerings; there are other vendors. FIDO U2F devices can be manufactured by any company (and are).

I agree that the ideal situation would be a device that is completely under the control of the user, but compared to IOS or Android, a hardware token that only does what it is supposed to do (in the case of the U2F tokens; register and sign authentication requests), and cannot be modified by the manufacturer after sale is very much preferable.

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Re:Using two-factor authentication for SSH by superuser2 on Tuesday January 12, 2016 @06:00PM (#10891074)

That's not a difference. You are also free to choose among many different smartphone manufacturers and OSes, all of which are capable of running a TOTP app.

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