GnuPG configuration

gpg.conf

# Options for GnuPG
# Copyright 1998, 1999, 2000, 2001, 2002, 2003 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.

# Uncomment the following option to get rid of the copyright notice

no-greeting
armor
comment ""

# If you have more than 1 secret key in your keyring, you may want to
# uncomment the following option and set your preferred keyid.

default-key 62DBDF62	# Personal
#default-key 29AB4CDD	# Debian

# If you do not pass a recipient to gpg, it will ask for one.  Using
# this option you can encrypt to a default key.  Key validation will
# not be done in this case.  The second form uses the default key as
# default recipient.

#default-recipient some-user-id
default-recipient-self

# By default GnuPG creates version 3 signatures for data files.  This
# is not strictly OpenPGP compliant but PGP 6 and most versions of PGP
# 7 require them.  To disable this behavior, you may use this option
# or --openpgp.

#no-force-v3-sigs

# 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.
# To enable full OpenPGP compliance you may want to use this option.

#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 
# GnuPG is able to figure out the correct charset and use that.

charset utf-8

# Group names may be defined like this:
#   group mynames = paige 0x12345678 joe patti
#
# Any time "mynames" is a recipient (-r or --recipient), it will be
# expanded to the names "paige", "joe", and "patti", and the key ID
# "0x12345678".  Note there is only one level of expansion - you
# cannot make an group that points to another group.  Note also that
# if there are spaces in the recipient name, this will appear as two
# recipients.  In these cases it is better to use the key ID.

#group mynames = paige 0x12345678 joe patti

# Lock the file only once for the lifetime of a process.  If you do
# not define this, the lock will be obtained and released every time
# it is needed, which is usually preferable.

#lock-once

# GnuPG can send and receive keys to and from a keyserver.  These
# servers can be HKP, email, or LDAP (if GnuPG is built with LDAP
# support).
#
# Example HKP keyserver:
#      hkp://subkeys.pgp.net
#
# Example email keyserver:
#      mailto:[email protected]
#
# Example LDAP keyservers:
#      ldap://pgp.surfnet.nl:11370
#      ldap://keyserver.pgp.com
#
# Regular URL syntax applies, and you can set an alternate port
# through the usual method:
#      hkp://keyserver.example.net:22742
#
# If you have problems connecting to a HKP server through a buggy http
# proxy, you can use keyserver option broken-http-proxy (see below),
# but first you should make sure that you have read the man page
# regarding proxies (keyserver option honor-http-proxy)
#
# Most users just set the name and type of their preferred keyserver.
# Note that most servers (with the notable exception of
# ldap://keyserver.pgp.com) synchronize changes with each other.  Note
# also that a single server name may actually point to multiple
# servers via DNS round-robin.  hkp://subkeys.pgp.net is an example of
# such a "server", which spreads the load over a number of physical
# servers.

keyserver hkp://keyserver.undergrid.net
keyserver hkp://na.pool.sks-keyservers.net
keyserver hkp://keyring.debian.org

keyserver-options ca-cert-file=~/.gnupg/sks-keyservers.netCA.pem

# Common options for keyserver functions:
#
# include-disabled = when searching, include keys marked as "disabled"
#                    on the keyserver (not all keyservers support this).
#
# no-include-revoked = when searching, do not include keys marked as
#                      "revoked" on the keyserver.
#
# verbose = show more information as the keys are fetched.
#           Can be used more than once to increase the amount
#           of information shown.
#
# use-temp-files = use temporary files instead of a pipe to talk to the
#                  keyserver.  Some platforms (Win32 for one) always
#                  have this on.
#
# keep-temp-files = do not delete temporary files after using them
#                   (really only useful for debugging)
#
# honor-http-proxy = if the keyserver uses HTTP, honor the http_proxy
#                    environment variable
#
# broken-http-proxy = try to work around a buggy HTTP proxy
#
# 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.
#
# no-include-attributes = do not include attribute IDs (aka "photo IDs")
#                         when sending keys to the keyserver.

keyserver-options auto-key-retrieve honor-http-proxy broken-http-proxy include-subkeys honor-keyserver-url honor-pka-record

auto-key-locate pka,keyserver

# Display photo user IDs in key listings

# list-options show-photos
#list-options show-policy-urls show-keyserver-urls 

# Display photo user IDs when a signature from a key with a photo is
# verified

# verify-options show-photos
verify-options show-policy-urls show-keyserver-urls pka-lookups

import-options repair-pks-subkey-bug import-clean

export-options export-clean

# Use this program to display photo user IDs
#
# %i is expanded to a temporary file that contains the photo.
# %I is the same as %i, but the file isn't deleted afterwards by GnuPG.
# %k is expanded to the key ID of the key.
# %K is expanded to the long OpenPGP key ID of the key.
# %t is expanded to the extension of the image (e.g. "jpg").
# %T is expanded to the MIME type of the image (e.g. "image/jpeg").
# %f is expanded to the fingerprint of the key.
# %% is %, of course.
#
# If %i or %I are not present, then the photo is supplied to the
# viewer on standard input.  If your platform supports it, standard
# input is the best way to do this as it avoids the time and effort in
# generating and then cleaning up a secure temp file.
#
# The default program is "xloadimage -fork -quiet -title 'KeyID 0x%k' stdin"
# On Mac OS X and Windows, the default is to use your regular JPEG image
# viewer.
#
# Some other viewers:
# photo-viewer "qiv %i"
# photo-viewer "ee %i"
# photo-viewer "display -title 'KeyID 0x%k'"
#
# This one saves a copy of the photo ID in your home directory:
# photo-viewer "cat > ~/photoid-for-key-%k.%t"
#
# Use your MIME handler to view photos:
# photo-viewer "metamail -q -d -b -c %T -s 'KeyID 0x%k' -f GnuPG"

# Passphrase agent
#
# We support the old experimental passphrase agent protocol as well as
# the new Assuan based one (currently available in the "newpg" package
# at ftp.gnupg.org/gcrypt/alpha/aegypten/).  To make use of the agent,
# you have to run an agent as daemon and use the option
#
use-agent

no-default-keyring
secret-keyring ~/.gnupg/keyrings.d/secring.gpg

keyring ~/.gnupg/pubring.gpg

primary-keyring ~/.gnupg/pubring.gpg

trustdb-name ~/.gnupg/trustdb.gpg

trusted-key 544C486862DBDF62 # 1024D/62DBDF62 2002-03-27 Personal
trusted-key D573D5B129AB4CDD # 1024D/29AB4CDD 2002-03-27 Debian Maintainer
trusted-key 15D0A62ED01E190C # 4096R/D01E190C 2011-12-23 Personal
trusted-key FFCE1C9A4FADF197 # 4096R/4FADF197 2011-12-23 Debian Developer

cert-policy-url http://undergrid.net/legal/gpg/policy/20111224/67dbe13b5a8d42041f0b09e2b7d244f842fccb8ca3bfc70b793eee3e65286dc1

require-cross-certification
personal-digest-preferences SHA256
# cert-digest-algo SHA256
default-preference-list SHA512 SHA384 SHA256 SHA224 AES256 AES192 AES CAST5 ZLIB BZIP2 ZIP Uncompressed
default-cert-level 3

keyserver-options ca-cert-file=~/.gnupg/sks-keyservers.netCA.pem

Note that GnuPG 1 doesn't do tilde expansion and with GnuPG 2 one has to configure a certificate in ~/.gnupg/dirmngr.conf using the hkp-cacert directive - which does support tilde expansion.