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Yubikey, Keybase and SSH

History About a year ago, I purchased a Yubikey NEO, a hardware-based two-factor authentication keyfob. I’d had an earlier version that could generate tokens upon being pressed, but the NEO included a few things I wanted to test out, including the ability to store gpg keys on it. I was also curious to see how hard it’d be to use the Yubikey with SSH connections. I went through the entire setup a year ago, got frustrated with using GPGTools on OS X and the keychain, and then promptly forgot about it for a year until my key expired and I’d forgotten the passphrase I’d use to encrypt it.…

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