batch cert-digest-algo SHA512 default-key 0x77BB8872 default-preference-list SHA512 SHA384 SHA256 SHA224 AES256 AES192 AES CAST5 ZLIB BZIP2 ZIP Uncompressed default-recipient-self keyserver pgp.net.nz keyserver-options auto-key-retrieve no-greeting personal-digest-preferences SHA512 quiet use-agent yes