Mailing List Archive

GnuPg 2.0.20 released

We are pleased to announce the availability of a new stable GnuPG-2
release: Version 2.0.20.

The GNU Privacy Guard (GnuPG) is GNU's tool for secure communication
and data storage. It can be used to encrypt data, create digital
signatures, help authenticating using Secure Shell and to provide a
framework for public key cryptography. It includes an advanced key
management facility and is compliant with the OpenPGP and S/MIME

GnuPG-2 has a different architecture than GnuPG-1 (e.g. 1.4.13) in
that it splits up functionality into several modules. However, both
versions may be installed alongside without any conflict. In fact,
the gpg version from GnuPG-1 is able to make use of the gpg-agent as
included in GnuPG-2 and allows for seamless passphrase caching. The
advantage of GnuPG-1 is its smaller size and the lack of dependency on
other modules at run and build time. We will keep maintaining GnuPG-1
versions because they are very useful for small systems and for server
based applications requiring only OpenPGP support.

GnuPG is distributed under the terms of the GNU General Public License
(GPLv3+). GnuPG-2 works best on GNU/Linux and *BSD systems but is
also available for other Unices, Microsoft Windows and Mac OS X.

What's New in 2.0.20

* Decryption using smartcards keys > 3072 bit does now work.

* New meta option ignore-invalid-option to allow using the same
option file by other GnuPG versions.

* gpg: The hash algorithm is now printed for sig records in key listings.

* gpg: Skip invalid keyblock packets during import to avoid a DoS.

* gpg: Correctly handle ports from DNS SRV records.

* keyserver: Improve use of SRV records

* gpg-agent: Avoid tty corruption when killing pinentry.

* scdaemon: Improve detection of card insertion and removal.

* scdaemon: Rename option --disable-keypad to --disable-pinpad.

* scdaemon: Better support for CCID readers. Now, the internal CCID
driver supports readers without the auto configuration feature.

* scdaemon: Add pinpad input for PC/SC, if your reader has pinpad and
it supports variable length PIN input, and you specify
--enable-pinpad-varlen option.

* scdaemon: New option --enable-pinpad-varlen.

* scdaemon: Install into libexecdir to avoid accidental execution
from the command line.

* Support building using w64-mingw32.

* Assorted bug fixes.

Getting the Software

Please follow the instructions found at
or read on:

GnuPG 2.0.20 may be downloaded from one of the GnuPG mirror sites or
direct from . The list of mirrors
can be found at . Note, that GnuPG
is not available at

On the FTP server and its mirrors you should find the following files
in the gnupg/ directory:

gnupg-2.0.20.tar.bz2 (4186k)

GnuPG source compressed using BZIP2 and OpenPGP signature.

gnupg-2.0.19-2.0.20.diff.bz2 (249k)

A patch file to upgrade a 2.0.19 GnuPG source tree. This patch
does not include updates of the language files.

Note, that we don't distribute gzip compressed tarballs for GnuPG-2.

A binary version for Windows will be released next week as part of the
Gpg4win project.

Checking the Integrity

In order to check that the version of GnuPG which you are going to
install is an original and unmodified one, you can do it in one of
the following ways:

* If you already have a trusted version of GnuPG installed, you
can simply check the supplied signature. For example to check the
signature of the file gnupg-2.0.20.tar.bz2 you would use this command:

gpg --verify gnupg-2.0.20.tar.bz2.sig

This checks whether the signature file matches the source file.
You should see a message indicating that the signature is good and
made by that signing key. Make sure that you have the right key,
either by checking the fingerprint of that key with other sources
or by checking that the key has been signed by a trustworthy other
key. Note, that you can retrieve the signing key using the command

finger wk ,at'

or using a keyserver like

gpg --keyserver --recv-key 4F25E3B6

The distribution key 4F25E3B6 is signed by the well known key


* If you are not able to use an old version of GnuPG, you have to verify
the SHA-1 checksum. Assuming you downloaded the file
gnupg-2.0.20.tar.bz2, you would run the sha1sum command like this:

sha1sum gnupg-2.0.20.tar.bz2

and check that the output matches the first line from the
following list:

7ddfefa37ee9da89a8aaa8f9059d251b4cd02562 gnupg-2.0.20.tar.bz2
4afefda1f42c7b8065e97c6df051fab2db552642 gnupg-2.0.19-2.0.20.diff.bz2


The file has the complete user manual of the system.
Separate man pages are included as well; however they have not all the
details available in the manual. It is also possible to read the
complete manual online in HTML format at

or in Portable Document Format at .

The chapters on gpg-agent, gpg and gpgsm include information on how
to set up the whole thing. You may also want search the GnuPG mailing
list archives or ask on the gnupg-users mailing lists for advise on
how to solve problems. Many of the new features are around for
several years and thus enough public knowledge is already available.

Almost all mail clients support GnuPG-2. Mutt users may want to use
the configure option "--enable-gpgme" during build time and put a "set
use_crypt_gpgme" in ~/.muttrc to enable S/MIME support along with the
reworked OpenPGP support.


Please consult the archive of the gnupg-users mailing list before
reporting a bug <>.
We suggest to send bug reports for a new release to this list in favor
of filing a bug at <>. We also have a dedicated
service directory at:

The driving force behind the development of GnuPG is the company of
its principal author, Werner Koch. Maintenance and improvement of
GnuPG and related software takes up most of their resources. To
allow him them continue his work he asks to either purchase a support
contract, engage them for custom enhancements, or to donate money:


We have to thank all the people who helped with this release, be it
testing, coding, translating, suggesting, auditing, administering the
servers, spreading the word or answering questions on the mailing

Happy Hacking,

The GnuPG Team

Die Gedanken sind frei. Ausnahmen regelt ein Bundesgesetz.