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233 lines
9.1 KiB
Plaintext
233 lines
9.1 KiB
Plaintext
The GNU Privacy Guard 2
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=========================
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Version 2.1
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Copyright 1997-2014 Werner Koch
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Copyright 1998-2013 Free Software Foundation, Inc.
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* INTRODUCTION
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GnuPG is a complete and free implementation of the OpenPGP standard
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as defined by RFC4880 (also known as PGP). GnuPG allows to encrypt
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and sign data and communication, features a versatile key management
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system as well as access modules for public key directories.
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GnuPG, also known as GPG, is a command line tool with features for
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easy integration with other applications. A wealth of frontend
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applications and libraries making use of GnuPG are available. Since
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version 2 GnuPG provides support for S/MIME and Secure Shell in
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addition to OpenPGP.
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GnuPG is Free Software (meaning that it respects your freedom). It
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can be freely used, modified and distributed under the terms of the
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GNU General Public License.
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We are currently maintaining three branches of GnuPG:
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- 2.1 (i.e. this release) is the latest development with a lot of
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new features.
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- 2.0 is the current stable version for general use.
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- 1.4 is the old standalone version which is most suitable for older
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or embedded platforms.
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You may not install 2.1 and 2.0 at the same time. However, it is
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possible to install 1.4 along with any of the 2.x versions.
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* BUILD INSTRUCTIONS
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GnuPG 2.1 depends on the following GnuPG related packages:
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npth (ftp://ftp.gnupg.org/gcrypt/npth/)
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libgpg-error (ftp://ftp.gnupg.org/gcrypt/libgpg-error/)
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libgcrypt (ftp://ftp.gnupg.org/gcrypt/libgcrypt/)
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libksba (ftp://ftp.gnupg.org/gcrypt/libksba/)
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libassuan (ftp://ftp.gnupg.org/gcrypt/libassuan/)
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You should get the latest versions of course, the GnuPG configure
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script complains if a version is not sufficient.
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For some advanced features several other libraries are required.
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The configure script prints diagnostic messages if one of these
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libraries is not available and a feature will not be available..
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You also need the Pinentry package for most functions of GnuPG;
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however it is not a build requirement. Pinentry is available at
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ftp://ftp.gnupg.org/gcrypt/pinentry/ .
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After building and installing the above packages in the order as
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given above, you may continue with GnuPG installation (you may also
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just try to build GnuPG to see whether your already installed
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versions are sufficient).
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As with all packages, you just have to do
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./configure
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make
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make install
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(Before doing install you might need to become root.)
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If everything succeeds, you have a working GnuPG with support for
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OpenPGP, S/MIME, ssh-agent, and smartcards. Note that there is no
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binary gpg but a gpg2 so that this package won't conflict with a
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GnuPG 1.4 installation. gpg2 behaves just like gpg.
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In case of problem please ask on the gnupg-users@gnupg.org mailing
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list for advise.
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Instruction on how to build for Windows can be found in the file
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doc/HACKING in the section "How to build an installer for Windows".
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This requires some experience as developer.
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Note that the PKITS tests are always skipped unless you copy the
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PKITS test data file into the tests/pkits directory. There is no
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need to run these test and some of them may even fail because the
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test scripts are not yet complete.
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You may run
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gpgconf --list-dirs
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to view the default directories used by GnuPG.
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To quickly build all required software without installing it, the
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Speedo method may be used:
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make -f build-aux/speedo.mk native
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This method downloads all required libraries and does a native build
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of GnuPG to PLAY/inst/. GNU make is required and you need to set
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LD_LIBRARY_PATH to $(pwd)/PLAY/inst/lib to test the binaries.
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** Specific build problems on some machines:
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*** Apple OSX 10.x using XCode
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On some versions the correct location of a header file can't be
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detected by configure. To fix that you should run configure like
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this
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./configure gl_cv_absolute_stdint_h=/usr/include/stdint.h
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Add other options as needed.
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* MIGRATION from 1.4 or 2.0 to 2.1
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The major change in 2.1 is gpg-agent taking care of the OpenPGP
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secret keys (those managed by GPG). The former file "secring.gpg"
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will not be used anymore. Newly generated keys are stored in the
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agent's key store directory "~/.gnupg/private-keys-v1.d/". The
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first time gpg needs a secret key it checks whether a "secring.gpg"
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exists and copies them to the new store. The old secring.gpg is
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kept for use by older versions of gpg.
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Note that gpg-agent now uses a fixed socket. All tools will start
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the gpg-agent as needed. The formerly used environment variable
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GPG_AGENT_INFO is ignored by 2.1. The SSH_AUTH_SOCK environment
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variable should be set to a fixed value.
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The Dirmngr is now part of GnuPG proper and also used to access
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OpenPGP keyservers. The directory layout of Dirmngr changed to make
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use of the GnuPG directories. Dirmngr is started by gpg or gpgsm as
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needed. There is no more need to install a separate Dirmngr package.
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* DOCUMENTATION
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The complete documentation is in the texinfo manual named
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`gnupg.info'. Run "info gnupg" to read it. If you want a a
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printable copy of the manual, change to the "doc" directory and
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enter "make pdf" For a HTML version enter "make html" and point your
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browser to gnupg.html/index.html. Standard man pages for all
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components are provided as well. An online version of the manual is
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available at http://www.gnupg.org/documentation/manuals/gnupg/ . A
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version of the manual pertaining to the current development snapshot
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is at http://www.gnupg.org/documentation/manuals/gnupg-devel/ .
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* GnuPG 1.4 and GnuPG 2.0
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GnuPG 2.0 is a newer version of GnuPG with additional support for
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S/MIME. It has a different design philosophy that splits
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functionality up into several modules. Both versions may be
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installed simultaneously without any conflict (gpg is called gpg2 in
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GnuPG 2). In fact, the gpg version from GnuPG 1.4 is able to make
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use of the gpg-agent as included in GnuPG 2 and allows for seamless
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passphrase caching. The advantage of GnuPG 1.4 is its smaller size
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and no dependency on other modules at run and build time.
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* HOW TO GET MORE INFORMATION
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A description of new features and changes in version 2.1 can be
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found in the file "doc/whats-new-in-2.1.txt" and online at
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"https://gnupg.org/faq/whats-new-in-2.1.html" .
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The primary WWW page is "https://www.gnupg.org"
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or using TOR "http://ic6au7wa3f6naxjq.onion"
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The primary FTP site is "ftp://ftp.gnupg.org/gcrypt/"
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See https://www.gnupg.org/download/mirrors.html for a list of
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mirrors and use them if possible. You may also find GnuPG mirrored
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on some of the regular GNU mirrors.
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We have some mailing lists dedicated to GnuPG:
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gnupg-announce@gnupg.org For important announcements like new
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versions and such stuff. This is a
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moderated list and has very low traffic.
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Do not post to this list.
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gnupg-users@gnupg.org For general user discussion and
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help (English).
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gnupg-de@gnupg.org German speaking counterpart of
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gnupg-users.
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gnupg-ru@gnupg.org Russian speaking counterpart of
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gnupg-users.
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gnupg-devel@gnupg.org GnuPG developers main forum.
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You subscribe to one of the list by sending mail with a subject of
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"subscribe" to x-request@gnupg.org, where x is the name of the
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mailing list (gnupg-announce, gnupg-users, etc.). See
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https://www.gnupg.org/documentation/mailing-lists.html for archives
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of the mailing lists.
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Please direct bug reports to http://bugs.gnupg.org or post them
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direct to the mailing list <gnupg-devel@gnupg.org>.
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Please direct questions about GnuPG to the users mailing list or one
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of the PGP newsgroups; please do not direct questions to one of the
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authors directly as we are busy working on improvements and bug
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fixes. The English and German mailing lists are watched by the
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authors and we try to answer questions when time allows us.
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Commercial grade support for GnuPG is available; for a listing of
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offers see https://www.gnupg.org/service.html . Maintaining and
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improving GnuPG requires a lot of time. Since 2001, g10 Code GmbH,
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a German company owned and headed by GnuPG's principal author Werner
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Koch, is bearing the majority of these costs. To keep GnuPG in a
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healthy state, they need your support.
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Please consider to donate at https://gnupg.org/donate/ .
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# This file is Free Software; as a special exception the authors gives
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# unlimited permission to copy and/or distribute it, with or without
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# modifications, as long as this notice is preserved. For conditions
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# of the whole package, please see the file COPYING. This file is
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# distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY, to the extent permitted by law; without even the implied
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# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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#
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# Local Variables:
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# mode:org
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# End:
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