The one thing, aside from GnuPG itself, that GPGME depends on, of course, is the keys themselves. So it is necessary to be able to generate them and modify them by adding subkeys, revoking or disabling them, sometimes deleting them and doing the same for user IDs.

In the following examples a key will be created for the world's greatest secret agent, Danger Mouse. Since Danger Mouse is a secret agent he needs to be able to protect information to SECRET level clearance, so his keys will be 3072-bit keys.

The pre-configured gpg.conf file which sets cipher, digest and other preferences contains the following configuration parameters:

expert allow-freeform-uid allow-secret-key-import trust-model tofu+pgp tofu-default-policy unknown enable-large-rsa enable-dsa2 cert-digest-algo SHA512 default-preference-list TWOFISH CAMELLIA256 AES256 CAMELLIA192 AES192 CAMELLIA128 AES BLOWFISH IDEA CAST5 3DES SHA512 SHA384 SHA256 SHA224 RIPEMD160 SHA1 ZLIB BZIP2 ZIP Uncompressed personal-cipher-preferences TWOFISH CAMELLIA256 AES256 CAMELLIA192 AES192 CAMELLIA128 AES BLOWFISH IDEA CAST5 3DES personal-digest-preferences SHA512 SHA384 SHA256 SHA224 RIPEMD160 SHA1 personal-compress-preferences ZLIB BZIP2 ZIP Uncompressed