I recently got two YubiKeys to try out another form of 2FA and to see how they work with my PGP setup (Enigmail and Thunderbird). I followed ankitrasto’s guide (part 1 and part 2) to move a key to the YubiKey. I then exported my public key with gpg2 -a --export carlo@carlo-hamalainen.net and sent it to a friend. He replied with the reasonable question: why didn’t the fingerprint E3E4A5B8 change? The exported data changed (was longer) yet the fingerprint, which looks like a hash, was the same.
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