Gpg

	Command
Import public keys	$ gpg --import keys.txt
Check the file's signature	$ gpg --verify foo.sig foo
Search public key	gpg --keyserver hkp://pgp.mit.edu --search-keys "Toto"
	gpg --card-status
Delete keys	gpg --delete-keys
Delete secret keys	gpg --delete-secret-keys
List key	gpg --list-keys
List secret-keys	gpg --list-secret-keys
Create master key	gpg2 --full-gen-key
Create subkey	gpg --edit-key <e-mail>

opensc-tool --list-readers

pcsc_scan

ykinfo -a

https://wiki.debian.org/Subkeys

:

gpg2 --expert --card-edit

cryptsetup --verbose --key-file - --cipher aes-xts-plain64 --key-size 512 --hash sha512 luksFormat keys.ext4.luks

sudo cryptsetup --verbose --key-file - --cipher aes-xts-plain64 --key-size 512 --hash sha512 luksOpen keys.ext4.luks gpg_vault

Remove private master key:

gpg2 --with-keygrip --list-key 0x<MASTERKEY>

rm -rf $GNUPGHOME/private-keys-v1.d/<KEYGRIPID>.key

all private keys are in private-keys-v1.d/.

Resources

	https://riseup.net/en/security/message-security/openpgp/best-practices#how-to-use-this-guide
	http://ekaia.org/blog/2009/05/10/creating-new-gpgkey/
	https://spin.atomicobject.com/2013/11/24/secure-gpg-keys-guide/
	https://help.ubuntu.com/community/GnuPrivacyGuardHowto
	https://www.paulfurley.com/extend-pgp-key-expiry-with-gpg/
	https://github.com/drduh/YubiKey-Guide#install---linux
	https://rzetterberg.github.io/yubikey-gpg-nixos.html