[Announce] GnuPG 2.0.27 "stable" released

Werner Koch wk at gnupg.org
Wed Feb 18 16:29:12 CET 2015


We are pleased to announce the availability of a new stable GnuPG-2
release: Version 2.0.27.  This is a maintenance release which fixes a
couple of bugs.  Update to this version is suggested.

The GNU Privacy Guard (GnuPG) is a complete and free implementation of
the OpenPGP standard as defined by RFC-4880 and better known as PGP.

GnuPG, also known as GPG, allows to encrypt and sign data and
communication, features a versatile key management system as well as
access modules for public key directories.  GnuPG itself is a command
line tool with features for easy integration with other applications.
A wealth of frontend applications and libraries making use of GnuPG
are available.  Since version 2 GnuPG provides support for S/MIME and
Secure Shell in addition to OpenPGP.

GnuPG is Free Software (meaning that it respects your freedom). It can
be freely used, modified and distributed under the terms of the GNU
General Public License.

Three different versions of GnuPG are actively maintained:

- GnuPG "modern" (2.1) is the latest development with a lot of new

- GnuPG "stable" (2.0) - which this is about - is the current stable
  version for general use.  This is what most users are currently using.

- GnuPG "classic" (1.4) is the old standalone version which is most
  suitable for older or embedded platforms.

You may not install "modern" (2.1) and "stable" (2.0) at the same
time.  However, it is possible to install "classic" (1.4) along with
any of the other versions.

What's New in 2.0.27

 * gpg: Detect faulty use of --verify on detached signatures.

 * gpg: New import option "keep-ownertrust".

 * gpg: Uses SHA-256 for all signature types also on RSA keys.

 * gpg: Added support for algo names when generating keys using the
   --command-fd method.

 * gpg: Unless --allow-weak-digest-algos is used the insecure MD5
   based fingerprints are shown as all zeroe

 * gpg: Fixed DoS based on bogus and overlong key packets.

 * gpg: Better error reporting for keyserver problems.

 * Fixed several bugs related to bogus keyrings and improved some
   other code.

Getting the Software

Please follow the instructions found at https://gnupg.org/download/
or read on:

GnuPG 2.0.27 may be downloaded from one of the GnuPG mirror sites or
direct from ftp://ftp.gnupg.org/gcrypt/gnupg/ .  The list of mirrors can
be found at https://gnupg.org/mirrors.html .  Note that GnuPG is not
available at ftp.gnu.org.

On ftp.gnupg.org and on its mirrors you should find the following new
files in the gnupg/ directory:

  - The GnuPG source code compressed using BZIP2 and its OpenPGP

    gnupg-2.0.27.tar.bz2     (4321k)

Note, that we don't distribute gzip compressed tarballs for GnuPG-2.
A Windows version will eventually be released at https://gpg4win.org .

If you are new to GnuPG please consider to use the "modern" version

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 version of GnuPG installed, you can simply
   verify the supplied signature.  For example to verify the signature
   of the file gnupg-2.0.27.tar.bz2 you would use this command:

     gpg --verify gnupg-2.0.27.tar.bz2.sig gnupg-2.0.27.tar.bz2

   This checks whether the signature file matches the source file.
   You should see a message indicating that the signature is good and
   made by one or more of the release signing keys.  Make sure that
   this is a valid key, either by matching the shown fingerprint
   against a trustworthy list of valid release signing keys or by
   checking that the key has been signed by trustworthy other keys.
   See below for information on the signing keys.

 * If you are not able to use an existing version of GnuPG, you have
   to verify the SHA-1 checksum.  On Unix systems the command to do
   this is either "sha1sum" or "shasum".  Assuming you downloaded the
   file gnupg-2.1.1.tar.bz2, you would run the command like this:

     sha1sum gnupg-2.0.27.tar.bz2

   and check that the output matches the next line:

d065be185f5bac8ea07b210ab7756e79b83b63d4  gnupg-2.0.27.tar.bz2

Release Signing Keys

To guarantee that a downloaded GnuPG version has not been tampered by
malicious entities we provide signature files for all tarballs and
binary versions.  The keys are also signed by the long term keys of
their respective owners.  Current releases are signed by one or more
of these four keys:

  2048R/4F25E3B6 2011-01-12 [expires: 2019-12-31]
  Key fingerprint = D869 2123 C406 5DEA 5E0F  3AB5 249B 39D2 4F25 E3B6
  Werner Koch (dist sig)

  rsa2048/E0856959 2014-10-29 [expires: 2019-12-31]
  Key fingerprint = 46CC 7308 65BB 5C78 EBAB  ADCF 0437 6F3E E085 6959
  David Shaw (GnuPG Release Signing Key) <dshaw 'at' jabberwocky.com>

  rsa2048/33BD3F06 2014-10-29 [expires: 2016-10-28]
  Key fingerprint = 031E C253 6E58 0D8E A286  A9F2 2071 B08A 33BD 3F06
  NIIBE Yutaka (GnuPG Release Key) <gniibe 'at' fsij.org>

  rsa2048/7EFD60D9 2014-10-19 [expires: 2020-12-31]
  Key fingerprint = D238 EA65 D64C 67ED 4C30  73F2 8A86 1B1C 7EFD 60D9
  Werner Koch (Release Signing Key)

You may retrieve these files from the keyservers using this command

  gpg --recv-keys 249B39D24F25E3B6 04376F3EE0856959 \
                  2071B08A33BD3F06 8A861B1C7EFD60D9

using an already installed version of gpg.  Remeber to check the
fingerprints against the above list (which you also find on the flip
side of our printed visit cards).  The keys are also available at
https://gnupg.org/signature_key.html and in the released GnuPG tarball
in the file g10/distsigkey.gpg .  Note that this mail has been signed
using my standard PGP key.


The file gnupg.info 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

  https://www.gnupg.org/documentation/manuals/gnupg.pdf .

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.


Please consult the archive of the gnupg-users mailing list before
reporting a bug <https://gnupg.org/documentation/mailing-lists.html>.
We suggest to send bug reports for a new release to this list in favor
of filing a bug at <https://bugs.gnupg.org>.  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 to continue this work he kindly asks to either purchase a support
contract, engage g10 Code 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, and answering questions on the mailing

Since the start of the funding campaign in December several thousand
people have been kind enough to donate a total of 250000 Euro to support
this project.  In addition the Linux Foundation gave a grant of $ 60000
for 2015, Stripe.com and Facebook.com each pledged $ 50000 per year.

I am amazed by this superb and unexpected support for the GnuPG project.
This will not only allow us to continue the project and hire at least a
second full time developer but gives us also the resources to improve
things which have been delayed for too long.

*Thank you all !*



This is a announcement only mailing list.  Please send replies only to
the gnupg-users 'at' gnupg.org mailing list.

Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.
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