Problem signing git commits with smartcard key

[NIIBE Yutaka]

Hello,

If I understand correctly, you put:

	your primary key to the OPENPGP.1 on card.
	your subkey of SEA capability to the OPENPGP.2 on card.
	your subkey of A capability to the OPENPGP.3 on card.

In this configuration, the OPENPGP.2 key on card is only for decryption.

You can't sign with that, even if its capability is specified Sign,
Encryption, and Authentication.

In OpenPGP card specification, three keys are different.

You can have a subkey with Sign capability and put it to OPENPGP.1 key
on card.
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