GPG Cheat Sheet

More information :

Summary

Config file

Create gpg.conf

touch ~/.gnupg/gpg.conf

Add content

default-key ID_KEY

personal-cipher-preferences AES256 AES 3DES

personal-digest-preferences SHA512 SHA384 SHA256

personal-compress-preferences ZLIB BZIP2 ZIP Uncompressed

default-preference-list SHA512 SHA384 SHA256 AES256 AES 3DES ZLIB BZIP2 ZIP Uncompressed

Commands

Generate GPG key pair with full option

gpg --full-gen-key

Generate GPG key pair

gpg --gen-key

List key pair

gpg --list-keys

List public keys

gpg -k

List private keys

gpg -K

Find fingerprint

gpg --fingerprint ID_KEY

Export public key in a file

gpg --export --armor ID_KEY > out.key

Import public key from a file

gpg --import file.key

List key pair

gpg --list-keys

Export private key in a file

gpg --export-secret-key -a > out.key

Import private key from a file

gpg --import --allow-secret-key-import fichier_cle.key

Sign a file

gpg -s -u ID_KEY file
gpg -s file (with default key)

Encrypt a file

gpg -r ID_KEY -e -a file

Encrypt and sign a file

gpg -s -a -e -u ID_KEY file

Decrypt a file

gpg -r ID_KEY -d file

Verify external signature

gpg --verify file file_sign

Verify Signature

gpg --verify file

Delete key (public & private)

gpg --delete-secret-keys ID_KEY
gpg --delete-key ID_KEY

Find technical information

gpg --edit-key ID_KEY

> check

> pref
> showpref

Change passphrase of private key

gpg --edit-key ID_KEY
> passwd
> save

Sign a public key

gpg --sign-key ID_KEY_TO_SIGN

Verify key signature

gpg --edit-key ID_KEY_
> check