1 The GNU Privacy Guard 2
2 =========================
5 Copyright 1997-2015 Werner Koch
6 Copyright 1998-2015 Free Software Foundation, Inc.
11 GnuPG is a complete and free implementation of the OpenPGP standard
12 as defined by RFC4880 (also known as PGP). GnuPG allows to encrypt
13 and sign data and communication, features a versatile key management
14 system as well as access modules for public key directories.
16 GnuPG, also known as GPG, is a command line tool with features for
17 easy integration with other applications. A wealth of frontend
18 applications and libraries making use of GnuPG are available. Since
19 version 2 GnuPG provides support for S/MIME and Secure Shell in
22 GnuPG is Free Software (meaning that it respects your freedom). It
23 can be freely used, modified and distributed under the terms of the
24 GNU General Public License.
26 We are currently maintaining three branches of GnuPG:
28 - 2.1 (i.e. this release) is the latest development with a lot of
31 - 2.0 is the current stable version for general use.
33 - 1.4 is the old standalone version which is most suitable for older
34 or embedded platforms.
36 You may not install 2.1 and 2.0 at the same time. However, it is
37 possible to install 1.4 along with any of the 2.x versions.
42 GnuPG 2.1 depends on the following GnuPG related packages:
44 npth (ftp://ftp.gnupg.org/gcrypt/npth/)
45 libgpg-error (ftp://ftp.gnupg.org/gcrypt/libgpg-error/)
46 libgcrypt (ftp://ftp.gnupg.org/gcrypt/libgcrypt/)
47 libksba (ftp://ftp.gnupg.org/gcrypt/libksba/)
48 libassuan (ftp://ftp.gnupg.org/gcrypt/libassuan/)
50 You should get the latest versions of course, the GnuPG configure
51 script complains if a version is not sufficient.
53 For some advanced features several other libraries are required.
54 The configure script prints diagnostic messages if one of these
55 libraries is not available and a feature will not be available..
57 You also need the Pinentry package for most functions of GnuPG;
58 however it is not a build requirement. Pinentry is available at
59 ftp://ftp.gnupg.org/gcrypt/pinentry/ .
61 After building and installing the above packages in the order as
62 given above, you may continue with GnuPG installation (you may also
63 just try to build GnuPG to see whether your already installed
64 versions are sufficient).
66 As with all packages, you just have to do
72 (Before doing install you might need to become root.)
74 If everything succeeds, you have a working GnuPG with support for
75 OpenPGP, S/MIME, ssh-agent, and smartcards. Note that there is no
76 binary gpg but a gpg2 so that this package won't conflict with a
77 GnuPG 1.4 installation. gpg2 behaves just like gpg.
79 In case of problem please ask on the gnupg-users@gnupg.org mailing
82 Instruction on how to build for Windows can be found in the file
83 doc/HACKING in the section "How to build an installer for Windows".
84 This requires some experience as developer.
86 Note that the PKITS tests are always skipped unless you copy the
87 PKITS test data file into the tests/pkits directory. There is no
88 need to run these test and some of them may even fail because the
89 test scripts are not yet complete.
95 to view the default directories used by GnuPG.
97 To quickly build all required software without installing it, the
98 Speedo method may be used:
100 make -f build-aux/speedo.mk native
102 This method downloads all required libraries and does a native build
103 of GnuPG to PLAY/inst/. GNU make is required and you need to set
104 LD_LIBRARY_PATH to $(pwd)/PLAY/inst/lib to test the binaries.
106 ** Specific build problems on some machines:
108 *** Apple OSX 10.x using XCode
110 On some versions the correct location of a header file can't be
111 detected by configure. To fix that you should run configure like
114 ./configure gl_cv_absolute_stdint_h=/usr/include/stdint.h
116 Add other options as needed.
119 * MIGRATION from 1.4 or 2.0 to 2.1
121 The major change in 2.1 is gpg-agent taking care of the OpenPGP
122 secret keys (those managed by GPG). The former file "secring.gpg"
123 will not be used anymore. Newly generated keys are stored in the
124 agent's key store directory "~/.gnupg/private-keys-v1.d/". The
125 first time gpg needs a secret key it checks whether a "secring.gpg"
126 exists and copies them to the new store. The old secring.gpg is
127 kept for use by older versions of gpg.
129 Note that gpg-agent now uses a fixed socket. All tools will start
130 the gpg-agent as needed. The formerly used environment variable
131 GPG_AGENT_INFO is ignored by 2.1. The SSH_AUTH_SOCK environment
132 variable should be set to a fixed value.
134 The Dirmngr is now part of GnuPG proper and also used to access
135 OpenPGP keyservers. The directory layout of Dirmngr changed to make
136 use of the GnuPG directories. Dirmngr is started by gpg or gpgsm as
137 needed. There is no more need to install a separate Dirmngr package.
142 The complete documentation is in the texinfo manual named
143 `gnupg.info'. Run "info gnupg" to read it. If you want a a
144 printable copy of the manual, change to the "doc" directory and
145 enter "make pdf" For a HTML version enter "make html" and point your
146 browser to gnupg.html/index.html. Standard man pages for all
147 components are provided as well. An online version of the manual is
148 available at [[https://gnupg.org/documentation/manuals/gnupg/]] . A
149 version of the manual pertaining to the current development snapshot
150 is at [[https://gnupg.org/documentation/manuals/gnupg-devel/]] .
153 * GnuPG 1.4 and GnuPG 2.0
155 GnuPG 2.0 is a newer version of GnuPG with additional support for
156 S/MIME. It has a different design philosophy that splits
157 functionality up into several modules. Both versions may be
158 installed simultaneously without any conflict (gpg is called gpg2 in
159 GnuPG 2). In fact, the gpg version from GnuPG 1.4 is able to make
160 use of the gpg-agent as included in GnuPG 2 and allows for seamless
161 passphrase caching. The advantage of GnuPG 1.4 is its smaller size
162 and no dependency on other modules at run and build time.
165 * HOW TO GET MORE INFORMATION
167 A description of new features and changes in version 2.1 can be
168 found in the file "doc/whats-new-in-2.1.txt" and online at
169 "https://gnupg.org/faq/whats-new-in-2.1.html" .
171 The primary WWW page is "https://www.gnupg.org"
172 or using TOR "http://ic6au7wa3f6naxjq.onion"
173 The primary FTP site is "ftp://ftp.gnupg.org/gcrypt/"
175 See [[https://gnupg.org/download/mirrors.html]] for a list of
176 mirrors and use them if possible. You may also find GnuPG mirrored
177 on some of the regular GNU mirrors.
179 We have some mailing lists dedicated to GnuPG:
181 gnupg-announce@gnupg.org For important announcements like new
182 versions and such stuff. This is a
183 moderated list and has very low traffic.
184 Do not post to this list.
186 gnupg-users@gnupg.org For general user discussion and
189 gnupg-de@gnupg.org German speaking counterpart of
192 gnupg-ru@gnupg.org Russian speaking counterpart of
195 gnupg-devel@gnupg.org GnuPG developers main forum.
197 You subscribe to one of the list by sending mail with a subject of
198 "subscribe" to x-request@gnupg.org, where x is the name of the
199 mailing list (gnupg-announce, gnupg-users, etc.). See
200 https://www.gnupg.org/documentation/mailing-lists.html for archives
201 of the mailing lists.
203 Please direct bug reports to http://bugs.gnupg.org or post them
204 direct to the mailing list <gnupg-devel@gnupg.org>.
206 Please direct questions about GnuPG to the users mailing list or one
207 of the PGP newsgroups; please do not direct questions to one of the
208 authors directly as we are busy working on improvements and bug
209 fixes. The English and German mailing lists are watched by the
210 authors and we try to answer questions when time allows us.
212 Commercial grade support for GnuPG is available; for a listing of
213 offers see https://www.gnupg.org/service.html . Maintaining and
214 improving GnuPG requires a lot of time. Since 2001, g10 Code GmbH,
215 a German company owned and headed by GnuPG's principal author Werner
216 Koch, is bearing the majority of these costs. To keep GnuPG in a
217 healthy state, they need your support.
219 Please consider to donate at https://gnupg.org/donate/ .
222 # This file is Free Software; as a special exception the authors gives
223 # unlimited permission to copy and/or distribute it, with or without
224 # modifications, as long as this notice is preserved. For conditions
225 # of the whole package, please see the file COPYING. This file is
226 # distributed in the hope that it will be useful, but WITHOUT ANY
227 # WARRANTY, to the extent permitted by law; without even the implied
228 # warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.