This is related to the question "After using GenerateAsymmetricKeyPair [], how to print the two keys in hex?" which @Sjoerd Smit kindly answered.
How can I use Mathematica v12.0 to extract the PGP fingerprint from a PGP public key, in 40 hex characters as it usually rendered?
I would like to be able to do this from other people's public keys as well as from public keys (or for that matter private keys, which have the same fingerprint) that I have generated a moment before using GenerateAsymmetricKeyPair[].