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Kleopatra: Support ECC Key generation for OpenPGP 3 cards
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Kleopatra currently does not know what algorithms / curves a smartcard supports.

Only the latest OpenPGP 3.3 card specification added a command to figure this out.

@werner How should Kleopatra choose which algorithms to offer for the user? What is the command to learn that from SCD for OpenPGP 3.3. (Yubikey)

I think OpenPGP > 3 we can offer NIST
For GnuK we can offer NIST + cv25519
For OpenPGP >= 3.3 we can offer NIST + cv25519 + brainpool?