gpg.conf

# Options for GnuPG
# Copyright 1998, 1999, 2000, 2001, 2002, 2003,
#           2010 Free Software Foundation, Inc.
#
# This file is free software; as a special exception the author gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
#
# This file is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Unless you specify which option file to use (with the command line
# option "--options filename"), GnuPG uses the file ~/.gnupg/gpg.conf
# by default.
#
# An options file can contain any long options which are available in
# GnuPG. If the first non white space character of a line is a '#',
# this line is ignored.  Empty lines are also ignored.
#
# See the man page for a list of options.

# This is an implementation of the Riseup OpenPGP Best Practices
# https://help.riseup.net/en/security/message-security/openpgp/best-practices

#-----------------------------
# default key
#-----------------------------

# The default key to sign with. If this option is not used, the default key is
# the first key found in the secret keyring

#default-key 0xD8692123C4065DEA5E0F3AB5249B39D24F25E3B6

#-----------------------------
# behavior
#-----------------------------

# Disable inclusion of the version string in ASCII armored output
no-emit-version

# Disable comment string in clear text signatures and ASCII armored messages
no-comments

# Display long key IDs
keyid-format 0xlong

# List all keys (or the specified ones) along with their fingerprints
with-fingerprint

# Display the calculated validity of user IDs during key listings
list-options show-uid-validity
verify-options show-uid-validity

# Try to use the GnuPG-Agent. With this option, GnuPG first tries to connect to
# the agent before it asks for a passphrase.
use-agent

# Because some mailers change lines starting with "From " to ">From "
# it is good to handle such lines in a special way when creating
# cleartext signatures; all other PGP versions do it this way too.
no-escape-from-lines

# If you do not use the Latin-1 (ISO-8859-1) charset, you should tell
# GnuPG which is the native character set.  Please check the man page
# for supported character sets.  This character set is only used for
# metadata and not for the actual message which does not undergo any
# translation.  Note that future version of GnuPG will change to UTF-8
# as default character set.  In most cases this option is not required
# as GnuPG is able to figure out the correct charset at runtime.
charset utf-8

#-----------------------------
# keyserver
#-----------------------------

# This is the server that --recv-keys, --send-keys, and --search-keys will
# communicate with to receive keys from, send keys to, and search for keys on
keyserver hkps://hkps.pool.sks-keyservers.net
#keyserver hkp://pgp.mit.edu
#keyserver hkps://keys.mailvelope.com

# Provide a certificate store to override the system default
# Get this from https://sks-keyservers.net/sks-keyservers.netCA.pem
keyserver-options ca-cert-file=/path/to/hkps.pool.sks-keyservers.net.pem

# Set the proxy to use for HTTP and HKP keyservers - default to the standard
# local Tor socks proxy
# It is encouraged to use Tor for improved anonymity. Preferrably use either a
# dedicated SOCKSPort for GnuPG and/or enable IsolateDestPort and
# IsolateDestAddr
#keyserver-options http-proxy=socks5-hostname://127.0.0.1:9050

# Don't leak DNS, see https://trac.torproject.org/projects/tor/ticket/2846
keyserver-options no-try-dns-srv

# When using --refresh-keys, if the key in question has a preferred keyserver
# URL, then disable use of that preferred keyserver to refresh the key from
keyserver-options no-honor-keyserver-url

# When searching for a key with --search-keys, include keys that are marked on
# the keyserver as revoked
keyserver-options include-revoked

# use-temp-files : use temporary files instead of a pipe to talk to the
#                  keyserver.  Some platforms (Win32 for one) always
#                  have this on.
keyserver-options use-temp-files

# auto-key-retrieve : automatically fetch keys as needed from the keyserver
#                     when verifying signatures or when importing keys that
#                     have been revoked by a revocation key that is not
#                     present on the keyring.
keyserver-options auto-key-retrieve

# no-include-attributes : do not include attribute IDs (aka "photo IDs")
#                         when sending keys to the keyserver.
keyserver-options no-include-attributes

#-----------------------------
# algorithm and ciphers
#-----------------------------

# list of personal digest preferences. When multiple digests are supported by
# all recipients, choose the strongest one
personal-cipher-preferences AES256 TWOFISH AES192 AES

# list of personal digest preferences. When multiple ciphers are supported by
# all recipients, choose the strongest one
personal-digest-preferences SHA512 SHA384 SHA256 SHA224

# message digest algorithm used when signing a key
cert-digest-algo SHA512

# This preference list is used for new keys and becomes the default for
# "setpref" in the edit menu
default-preference-list SHA512 SHA384 SHA256 SHA224 AES256 AES192 AES CAST5 ZLIB BZIP2 ZIP Uncompressed