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1386 lines
39 KiB
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1386 lines
39 KiB
Plaintext
<!-- gpg.sgml - the man page for GnuPG
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Copyright (C) 1998, 1999 Free Software Foundation, Inc.
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This file is part of GnuPG.
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GnuPG is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GnuPG is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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-->
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<!-- This file should be processed by docbook-to-man to
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create a manual page. This program has currently the bug
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not to remove leading white space. So this source file does
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not look very pretty
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FIXME: generated a file with entity (e.g. pathnames) from the
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configure scripts and include it here
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-->
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<!DOCTYPE RefEntry PUBLIC "-//Davenport//DTD DocBook V3.0//EN" [
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<!entity ParmDir "<parameter>directory</parameter>">
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<!entity ParmFile "<parameter>file</parameter>">
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<!entity OptParmFile "<optional>&ParmFile;</optional>">
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<!entity ParmFiles "<parameter>files</parameter>">
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<!entity OptParmFiles "<optional>&ParmFiles;</optional>">
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<!entity ParmNames "<parameter>names</parameter>">
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<!entity OptParmNames "<optional>&ParmNames;</optional>">
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<!entity ParmName "<parameter>name</parameter>">
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<!entity OptParmName "<optional>&ParmName;</optional>">
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<!entity ParmKeyIDs "<parameter>key IDs</parameter>">
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<!entity ParmN "<parameter>n</parameter>">
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<!entity ParmFlags "<parameter>flags</parameter>">
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<!entity ParmString "<parameter>string</parameter>">
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<!entity ParmValue "<parameter>value</parameter>">
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<!entity ParmNameValue "<parameter>name=value</parameter>">
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]>
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<refentry id="gpg">
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<refmeta>
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<refentrytitle>gpg</refentrytitle>
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<manvolnum>1</manvolnum>
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<refmiscinfo class="gnu">GNU Tools</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname/gpg/
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<refpurpose>encryption and signing tool</>
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</refnamediv>
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<refsynopsisdiv>
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<synopsis>
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<command>gpg</>
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<optional>--homedir <parameter/name/</optional>
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<optional>--options <parameter/file/</optional>
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<optional><parameter/options/</optional>
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<parameter>command</>
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<optional><parameter/args/</optional>
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</synopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>DESCRIPTION</title>
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<para>
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<command/gpg/ is the main program for the GnuPG system.
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</para>
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</refsect1>
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<refsect1>
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<title>COMMANDS</title>
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<para>
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<command/gpg/ recognizes these commands:
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</para>
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<variablelist>
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<varlistentry>
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<term>-s, --sign</term>
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<listitem><para>
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Make a signature. This command may be combined
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with --encrypt.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--clearsign</term>
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<listitem><para>
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Make a clear text signature.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>-b, --detach-sign</term>
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<listitem><para>
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Make a detached signature.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>-e, --encrypt</term>
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<listitem><para>
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Encrypt data. This option may be combined with --sign.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>-c, --symmetric</term>
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<listitem><para>
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Encrypt with symmetric cipher only
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This command asks for a passphrase.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--store</term>
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<listitem><para>
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Store only (make a simple RFC1991 packet).
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--decrypt &OptParmFile;</term>
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<listitem><para>
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Decrypt &ParmFile; (or stdin if no file is specified) and
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write it to stdout (or the file specified with
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--output). If the decrypted file is signed, the
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signature is also verified. This command differs
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from the default operation, as it never writes to the
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filename which is included in the file and it
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rejects files which don't begin with an encrypted
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message.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--verify <optional><optional><parameter/sigfile/</optional>
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<optional><parameter/signed-files/</optional></optional></term>
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<listitem><para>
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Assume that <parameter/sigfile/ is a signature and verify it
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without generating any output. With no arguments,
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the signature packet is read from stdin (it may be a
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detached signature when not used in batch mode). If
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only a sigfile is given, it may be a complete
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signature or a detached signature, in which case
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the signed stuff is expected in a file without the
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".sig" or ".asc" extension (if such a file does
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not exist it is expected at stdin; use a single dash ("-") as
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filename to force a read from stdin). With more than
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1 argument, the first should be a detached signature
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and the remaining files are the signed stuff.
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</para></listitem></varlistentry>
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<!--
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B<-k> [I<username>] [I<keyring>]
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Kludge to be somewhat compatible with PGP.
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Without arguments, all public keyrings are listed.
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With one argument, only I<keyring> is listed.
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Special combinations are also allowed, but they may
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give strange results when combined with more options.
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B<-kv> Same as B<-k>
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B<-kvv> List the signatures with every key.
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B<-kvvv> Additionally check all signatures.
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B<-kvc> List fingerprints
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B<-kvvc> List fingerprints and signatures
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B<This command may be removed in the future!>
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-->
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<varlistentry>
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<term>--list-keys &OptParmNames;</term>
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<term>--list-public-keys &OptParmNames;</term>
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<listitem><para>
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List all keys from the public keyrings, or just the
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ones given on the command line.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--list-secret-keys &OptParmNames;</term>
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<listitem><para>
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List all keys from the secret keyrings, or just the
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ones given on the command line.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--list-sigs &OptParmNames;</term>
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<listitem><para>
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Same as --list-keys, but the signatures are listed too.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--check-sigs &OptParmNames;</term>
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<listitem><para>
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Same as --list-sigs, but the signatures are verified.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--fingerprint &OptParmNames;</term>
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<listitem><para>
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List all keys with their fingerprints. This is the
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same output as --list-keys but with the additional output
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of a line with the fingerprint. May also be combined
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with --list-sigs or --check-sigs.
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If this command is given twice, the fingerprints of all
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secondary keys are listed too.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--list-packets</term>
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<listitem><para>
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List only the sequence of packets. This is mainly
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useful for debugging.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--gen-key</term>
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<listitem><para>
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Generate a new key pair. This command can only be
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used interactive.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--edit-key &ParmName;</term>
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<listitem><para>
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Present a menu which enables you to do all key
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related tasks:</para>
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<variablelist>
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<varlistentry>
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<term>sign</term>
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<listitem><para>
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Make a signature on key of user &ParmName;
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If the key is not yet signed by the default
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user (or the users given with -u), the
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program displays the information of the key
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again, together with its fingerprint and
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asks whether it should be signed. This
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question is repeated for all users specified
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with -u.</para></listitem></varlistentry>
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<varlistentry>
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<term>lsign</term>
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<listitem><para>
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Same as --sign but the signature is marked as
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non-exportable and will therefore never be used
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by others. This may be used to make keys valid
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only in the local environment.</para></listitem></varlistentry>
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<varlistentry>
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<term>revsig</term>
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<listitem><para>
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Revoke a signature. GnuPG asks for every
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signature which has been done by one of
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the secret keys, whether a revocation
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certificate should be generated.</para></listitem></varlistentry>
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<varlistentry>
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<term>trust</term>
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<listitem><para>
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Change the owner trust value. This updates the
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trust-db immediately and no save is required.</para></listitem></varlistentry>
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<varlistentry>
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<term>disable</term>
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<term>enable</term>
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<listitem><para>
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Disable or enable an entire key. A disabled key can normally not be used
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for encryption.</para></listitem></varlistentry>
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<varlistentry>
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<term>adduid</term>
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<listitem><para>
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Create an alternate user id.</para></listitem></varlistentry>
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<varlistentry>
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<term>deluid</term>
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<listitem><para>
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Delete an user id.</para></listitem></varlistentry>
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<varlistentry>
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<term>addkey</term>
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<listitem><para>
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Add a subkey to this key.</para></listitem></varlistentry>
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<varlistentry>
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<term>delkey</term>
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<listitem><para>
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Remove a subkey.</para></listitem></varlistentry>
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<varlistentry>
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<term>revkey</term>
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<listitem><para>
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Revoke a subkey.</para></listitem></varlistentry>
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<varlistentry>
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<term>expire</term>
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<listitem><para>
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Change the key expiration time. If a key is
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selected, the time of this key will be changed.
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With no selection the key expiration of the
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primary key is changed.</para></listitem></varlistentry>
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<varlistentry>
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<term>passwd</term>
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<listitem><para>
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Change the passphrase of the secret key.</para></listitem></varlistentry>
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<varlistentry>
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<term>uid &ParmN;</term>
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<listitem><para>
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Toggle selection of user id with index &ParmN;.
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Use 0 to deselect all.</para></listitem></varlistentry>
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<varlistentry>
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<term>key &ParmN;</term>
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<listitem><para>
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Toggle selection of subkey with index &ParmN;.
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Use 0 to deselect all.</para></listitem></varlistentry>
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<varlistentry>
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<term>check</term>
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<listitem><para>
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Check all selected user ids.</para></listitem></varlistentry>
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<varlistentry>
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<term>pref</term>
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<listitem><para>
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List preferences.</para></listitem></varlistentry>
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<varlistentry>
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<term>toggle</term>
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<listitem><para>
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Toggle between public and secret key listing.</para></listitem></varlistentry>
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<varlistentry>
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<term>save</term>
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<listitem><para>
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Save all changes to the key rings and quit.</para></listitem></varlistentry>
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<varlistentry>
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<term>quit</term>
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<listitem><para>
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Quit the program without updating the
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key rings.</para></listitem></varlistentry>
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</variablelist>
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<para>
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The listing shows you the key with its secondary
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keys and all user ids. Selected keys or user ids
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are indicated by an asterisk. The trust value is
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displayed with the primary key: the first is the
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assigned owner trust and the second is the calculated
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trust value. Letters are used for the values:</para>
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<variablelist>
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<varlistentry><term>-</term><listitem><para>No ownertrust assigned / not yet calculated.</para></listitem></varlistentry>
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<varlistentry><term>e</term><listitem><para>Trust calculation has failed.</para></listitem></varlistentry>
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<varlistentry><term>q</term><listitem><para>Not enough information for calculation.</para></listitem></varlistentry>
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<varlistentry><term>n</term><listitem><para>Never trust this key.</para></listitem></varlistentry>
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<varlistentry><term>m</term><listitem><para>Marginally trusted.</para></listitem></varlistentry>
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<varlistentry><term>f</term><listitem><para>Fully trusted.</para></listitem></varlistentry>
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<varlistentry><term>u</term><listitem><para>Ultimately trusted.</para></listitem></varlistentry>
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</variablelist>
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</listitem></varlistentry>
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<varlistentry>
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<term>--sign-key &ParmName;</term>
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<listitem><para>
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Sign a public key with you secret key. This is a shortcut version
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of the subcommand "sign" from --edit.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--lsign-key &ParmName;</term>
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<listitem><para>
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Sign a public key with you secret key but mark it as non-exportable.
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This is a shortcut version of the subcommand "lsign" from --edit.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--delete-key &ParmName;</term>
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<listitem><para>
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Remove key from the public keyring
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--delete-secret-key &ParmName;</term>
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<listitem><para>
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Remove key from the secret and public keyring
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--gen-revoke</term>
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<listitem><para>
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Generate a revocation certificate for the complete key. To revoke
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a subkey or a signature, use the --edit command.
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</para></listitem></varlistentry>
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<varlistentry>
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<term>--export &OptParmNames;</term>
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|
<listitem><para>
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Either export all keys from all keyrings (default
|
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keyrings and those registered via option --keyring),
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or if at least one name is given, those of the given
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name. The new keyring is written to stdout or to
|
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the file given with option "output". Use together
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|
with --armor to mail those keys.
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|
</para></listitem></varlistentry>
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<varlistentry>
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<term>--send-keys &OptParmNames;</term>
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<listitem><para>
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Same as --export but sends the keys to a keyserver.
|
|
Option --keyserver must be used to give the name
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|
of this keyserver. Don't send your complete keyring
|
|
to a keyserver - select only those keys which are new
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or changed by you.
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</para></listitem></varlistentry>
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|
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<varlistentry>
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<term>--export-all &OptParmNames;</term>
|
|
<listitem><para>
|
|
Same as --export, but does also export keys which
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|
are not compatible to OpenPGP.
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</para></listitem></varlistentry>
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|
|
|
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<varlistentry>
|
|
<term>--export-secret-keys &OptParmNames;</term>
|
|
<listitem><para>
|
|
Same as --export, but does export the secret keys.
|
|
This is normally not very useful and a security risk.
|
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</para></listitem></varlistentry>
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|
|
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<varlistentry>
|
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<term>--import &OptParmFiles;</term>
|
|
<term>--fast-import &OptParmFiles;</term>
|
|
<listitem><para>
|
|
Import/merge keys. This adds the given keys to the
|
|
keyring.
|
|
The fast version does not build
|
|
the trustdb; this can be done at any time with the
|
|
command --update-trustdb.
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|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--recv-keys &ParmKeyIDs;</term>
|
|
<listitem><para>
|
|
Import the keys with the given key IDs from a HKP
|
|
keyserver. Option --keyserver must be used to
|
|
give the name of this keyserver.
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|
</para></listitem></varlistentry>
|
|
|
|
|
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<varlistentry>
|
|
<term>--export-ownertrust</term>
|
|
<listitem><para>
|
|
List the assigned ownertrust values in ASCII format
|
|
for backup purposes
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--import-ownertrust &OptParmFiles;</term>
|
|
<listitem><para>
|
|
Update the trustdb with the ownertrust values stored
|
|
in &ParmFiles; (or stdin if not given); existing
|
|
values will be overwritten.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--print-md <parameter>algo</parameter> &OptParmFiles;</term>
|
|
<listitem><para>
|
|
Print message digest of algorithm ALGO for all given files of stdin.
|
|
If "*" is used for the algorithm, digests for all available algorithms
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|
are printed.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--gen-random <parameter>0|1|2</parameter>
|
|
<optional><parameter>count</parameter></optional></term>
|
|
<listitem><para>
|
|
Emit COUNT random bytes of the given quality level. If count is not given
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|
or zero, an endless sequence of random bytes will be emitted.
|
|
PLEASE, don't use this command unless you know what you are doing, it may
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|
remove precious entropy from the system!
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--gen-prime <parameter>mode</parameter>
|
|
<parameter>bits</parameter>
|
|
<optional><parameter>qbits</parameter></optional></term>
|
|
<listitem><para>
|
|
Use the source, Luke :-). The output format is still subject to change.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--version</term>
|
|
<listitem><para>
|
|
Print version information along with a list
|
|
of supported algorithms.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--warranty</term>
|
|
<listitem><para>
|
|
Print warranty information.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>-h, --help</term>
|
|
<listitem><para>
|
|
Print usage information. This is a really long list even it does list
|
|
not all options.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>OPTIONS</title>
|
|
<para>
|
|
Long options can be put in an options file (default "~/.gnupg/options").
|
|
Do not write the 2 dashes, but simply the name of the option and any
|
|
required arguments. Lines with a hash as the first non-white-space
|
|
character are ignored. Commands may be put in this file too, but that
|
|
does not make sense.
|
|
</para>
|
|
<para>
|
|
<command/gpg/ recognizes these options:
|
|
</para>
|
|
|
|
<variablelist>
|
|
|
|
|
|
<varlistentry>
|
|
<term>-a, --armor</term>
|
|
<listitem><para>
|
|
Create ASCII armored output.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>-o, --output &ParmFile;</term>
|
|
<listitem><para>
|
|
Write output to &ParmFile;.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>-u, --local-user &ParmName;</term>
|
|
<listitem><para>
|
|
Use &ParmName as the user ID to sign.
|
|
This option is silently ignored for the list commands,
|
|
so that it can be used in an options file.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--default-key &ParmName;</term>
|
|
<listitem><para>
|
|
Use &ParmName; as default user ID for signatures. If this
|
|
is not used the default user ID is the first user ID
|
|
found in the secret keyring.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>-r, --recipient &ParmName;</term>
|
|
<term></term>
|
|
<listitem><para>
|
|
Encrypt for user id &ParmName;. If this option is not
|
|
specified, GnuPG asks for the user-id unless --default-recipient is given
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--default-recipient &ParmName;</term>
|
|
<listitem><para>
|
|
Use &ParmName; as default recipient if option --recipient is not used and
|
|
don't ask if this is a valid one. &ParmName; must be a non empty.
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--default-recipient-self</term>
|
|
<listitem><para>
|
|
Use the default key as default recipient if option --recipient is not used and
|
|
don't ask if this is a valid one. The default key is the first one from the
|
|
secret keyring or the one set with --default-key.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--no-default-recipient</term>
|
|
<listitem><para>
|
|
Reset --default-recipient and --default-recipient-self.
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--encrypt-to &ParmName;</term>
|
|
<listitem><para>
|
|
Same as --recipient but this one is intended for
|
|
in the options file and may be used together with
|
|
an own user-id as an "encrypt-to-self". These keys
|
|
are only used when there are other recipients given
|
|
either by use of --recipient or by the asked user id.
|
|
No trust checking is performed for these user ids and
|
|
even disabled keys can be used.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--no-encrypt-to</term>
|
|
<listitem><para>
|
|
Disable the use of all --encrypt-to keys.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>-v, --verbose</term>
|
|
<listitem><para>
|
|
Give more information during processing. If used
|
|
twice, the input data is listed in detail.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>-q, --quiet</term>
|
|
<listitem><para>
|
|
Try to be as quiet as possible.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>-z &ParmN;</term>
|
|
<listitem><para>
|
|
Set compression level to &ParmN;. A value of 0 for &ParmN;
|
|
disables compression. Default is to use the default
|
|
compression level of zlib (normally 6).
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>-t, --textmode</term>
|
|
<listitem><para>
|
|
Use canonical text mode. If -t (but not
|
|
--textmode) is used together with armoring
|
|
and signing, this enables clearsigned messages.
|
|
This kludge is needed for PGP compatibility;
|
|
normally you would use --sign or --clearsign
|
|
to selected the type of the signature.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>-n, --dry-run</term>
|
|
<listitem><para>
|
|
Don't make any changes (this is not completely implemented).
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>-i, --interactive</term>
|
|
<listitem><para>
|
|
Prompt before overwriting any files.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--batch</term>
|
|
<listitem><para>
|
|
Use batch mode. Never ask, do not allow interactive
|
|
commands.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--no-batch</term>
|
|
<listitem><para>
|
|
Disable batch mode. This may be of use if --batch
|
|
is enabled from an options file.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--yes</term>
|
|
<listitem><para>
|
|
Assume "yes" on most questions.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--no</term>
|
|
<listitem><para>
|
|
Assume "no" on most questions.
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--always-trust</term>
|
|
<listitem><para>
|
|
Skip key validation and assume that used keys are always fully trusted.
|
|
You won't use this unless you have installed some external validation scheme.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--keyserver &ParmName;</term>
|
|
<listitem><para>
|
|
Use &ParmName to lookup keys which are not yet in
|
|
your keyring. This is only done while verifying
|
|
messages with signatures. The option is also
|
|
required for the command --send-keys to
|
|
specify the keyserver to where the keys should
|
|
be send. All keyservers synchronize with each
|
|
other - so there is no need to send keys to more
|
|
than one server. Using the command
|
|
"host -l pgp.net | grep wwwkeys" gives you a
|
|
list of keyservers. Because there is load
|
|
balancing using round-robin DNS you may notice
|
|
that you get different key servers.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--keyring &ParmFile;</term>
|
|
<listitem><para>
|
|
Add &ParmFile to the list of keyrings.
|
|
If &ParmFile begins with a tilde and a slash, these
|
|
are replaced by the HOME directory. If the filename
|
|
does not contain a slash, it is assumed to be in the
|
|
home-directory ("~/.gnupg" if --homedir is not used).
|
|
The filename may be prefixed with a scheme:</para>
|
|
<para>"gnupg-ring:" is the default one.</para>
|
|
<para>"gnupg-gdbm:" may be used for a GDBM ring.</para>
|
|
<para>It might make sense to use it together with --no-default-keyring.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--secret-keyring &ParmFile;</term>
|
|
<listitem><para>
|
|
Same as --keyring but for the secret keyrings.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--homedir &ParmDir;</term>
|
|
<listitem><para>
|
|
Set the name of the home directory to &ParmDir; If this
|
|
option is not used it defaults to "~/.gnupg". It does
|
|
not make sense to use this in a options file. This
|
|
also overrides the environment variable "GNUPGHOME".
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--charset &ParmName;</term>
|
|
<listitem><para>
|
|
Set the name of the native character set. This is used
|
|
to convert some strings to proper UTF-8 encoding.
|
|
Valid values for &ParmName; are:</para>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term>iso-8859-1</term><listitem><para>This is the default Latin 1 set.</para></listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term>iso-8859-2</term><listitem><para>The Latin 2 set.</para></listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term>koi8-r</term><listitem><para>The usual Russian set (rfc1489).</para></listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--utf8-strings</term>
|
|
<term>--no-utf8-strings</term>
|
|
<listitem><para>
|
|
Assume that the arguments are already given as UTF8 strings. The default
|
|
(--no-utf8-strings)
|
|
is to assume that arguments are encoded in the character set as specified
|
|
by --charset. These options effects all following arguments. Both options may
|
|
used multiple times.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--options &ParmFile;</term>
|
|
<listitem><para>
|
|
Read options from &ParmFile; and do not try to read
|
|
them from the default options file in the homedir
|
|
(see --homedir). This option is ignored if used
|
|
in an options file.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--no-options</term>
|
|
<listitem><para>
|
|
Shortcut for "--options /dev/null". This option is
|
|
detected before an attempt to open an option file.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--load-extension &ParmName;</term>
|
|
<listitem><para>
|
|
Load an extension module. If &ParmName; does not
|
|
contain a slash it is searched in "/usr/local/lib/gnupg"
|
|
See the manual for more information about extensions.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--debug &ParmFlags;</term>
|
|
<listitem><para>
|
|
Set debugging flags. All flags are or-ed and &ParmFlags; may
|
|
be given in C syntax (e.g. 0x0042).
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--debug-all</term>
|
|
<listitem><para>
|
|
Set all useful debugging flags.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--status-fd &ParmN;</term>
|
|
<listitem><para>
|
|
Write special status strings to the file descriptor &ParmN;.
|
|
See the file DETAILS in the documentation for a listing of them.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--logger-fd &ParmN;</term>
|
|
<listitem><para>
|
|
Write log output to file descriptor &ParmN; and not to stderr.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--no-comment</term>
|
|
<listitem><para>
|
|
Do not write comment packets. This option affects only
|
|
the generation of secret keys. Output of option packets
|
|
is disabled since version 0.4.2.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--comment &ParmString;</term>
|
|
<listitem><para>
|
|
Use &ParmString; as comment string in clear text signatures.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--default-comment</term>
|
|
<listitem><para>
|
|
Force to write the standard comment string in clear
|
|
text signatures. Use this to overwrite a --comment
|
|
from a config file.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--no-version</term>
|
|
<listitem><para>
|
|
Omit the version string in clear text signatures.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--emit-version</term>
|
|
<listitem><para>
|
|
Force to write the version string in clear text
|
|
signatures. Use this to overwrite a previous
|
|
--no-version from a config file.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>-N, --notation-data &ParmNameValue;</term>
|
|
<listitem><para>
|
|
Put the name value pair into the signature as notation data.
|
|
&ParmName; must consists only of alphanumeric characters, digits
|
|
or the underscore; the first character must not be a digit.
|
|
&ParmValue; may be any printable string; it will encoded in UTF8,
|
|
so sou should have check that your --charset is set right.
|
|
If you prefix &ParmName; with an exclamation mark, the notation
|
|
data will be flagged as critical (rfc2440:5.2.3.15).
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--set-policy-url &ParmString;</term>
|
|
<listitem><para>
|
|
Use &ParmString; as Policy URL for signatures (rfc2440:5.2.3.19).
|
|
If you prefix it with an exclamation mark, the policy URL
|
|
packet will be flagged as critical.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--set-filename &ParmString;</term>
|
|
<listitem><para>
|
|
Use &ParmString; as the name of file which is stored in
|
|
messages.
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--use-embedded-filename</term>
|
|
<listitem><para>
|
|
Try to create a file with a name as embedded in the data.
|
|
This can be a dangerous option as it allows to overwrite files.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--completes-needed &ParmN;</term>
|
|
<listitem><para>
|
|
Number of completely trusted users to introduce a new
|
|
key signer (defaults to 1).
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--marginals-needed &ParmN;</term>
|
|
<listitem><para>
|
|
Number of marginally trusted users to introduce a new
|
|
key signer (defaults to 3)
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--max-cert-depth &ParmN;</term>
|
|
<listitem><para>
|
|
Maximum depth of a certification chain (default is 5).
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--cipher-algo &ParmName;</term>
|
|
<listitem><para>
|
|
Use &ParmName; as cipher algorithm. Running the program
|
|
with the command --version yields a list of supported
|
|
algorithms. If this is not used the cipher algorithm is
|
|
selected from the preferences stored with the key.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
|
|
<varlistentry>
|
|
<term>--digest-algo &ParmName;</term>
|
|
<listitem><para>
|
|
Use &ParmName; as message digest algorithm. Running the
|
|
program with the command --version yields a list of
|
|
supported algorithms. Please note that using this
|
|
option may violate the OpenPGP requirement, that a
|
|
160 bit hash is to be used for DSA.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--s2k-cipher-algo &ParmName;</term>
|
|
<listitem><para>
|
|
Use &ParmName; as the cipher algorithm used to protect secret
|
|
keys. The default cipher is BLOWFISH. This cipher is
|
|
also used for conventional encryption if --cipher-algo
|
|
is not given.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--s2k-digest-algo &ParmName;</term>
|
|
<listitem><para>
|
|
Use &ParmName; as the digest algorithm used to mangle the
|
|
passphrases. The default algorithm is RIPE-MD-160.
|
|
This digest algorithm is also used for conventional
|
|
encryption if --digest-algo is not given.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--s2k-mode &ParmN;</term>
|
|
<listitem><para>
|
|
Selects how passphrases are mangled. If &ParmN; is 0
|
|
a plain passphrase (which is not recommended) will be used,
|
|
a 1 (default) adds a salt to the passphrase and
|
|
a 3 iterates the whole process a couple of times.
|
|
Unless --rfc1991 is used, this mode is also used
|
|
for conventional encryption.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--compress-algo &ParmN;</term>
|
|
<listitem><para>
|
|
Use compress algorithm &ParmN;. Default is 2 which is
|
|
RFC1950 compression. You may use 1 to use the old zlib
|
|
version which is used by PGP. The default algorithm may
|
|
give better results because the window size is not limited
|
|
to 8K. If this is not used the OpenPGP behavior is used,
|
|
i.e. the compression algorithm is selected from the
|
|
preferences; note, that this can't be done if you do
|
|
not encrypt the data.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--disable-cipher-algo &ParmName;</term>
|
|
<listitem><para>
|
|
Never allow the use of &ParmName; as cipher algorithm.
|
|
The given name will not be checked so that a later loaded algorithm
|
|
will still get disabled.
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--disable-pubkey-algo &ParmName;</term>
|
|
<listitem><para>
|
|
Never allow the use of &ParmName; as public key algorithm.
|
|
The given name will not be checked so that a later loaded algorithm
|
|
will still get disabled.
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--throw-keyid</term>
|
|
<listitem><para>
|
|
Do not put the keyid into encrypted packets. This option
|
|
hides the receiver of the message and is a countermeasure
|
|
against traffic analysis. It may slow down the decryption
|
|
process because all available secret keys are tried.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--not-dash-escaped</term>
|
|
<listitem><para>
|
|
This option changes the behavior of cleartext signatures
|
|
so that they can be used for patch files. You should not
|
|
send such an armored file via email because all spaces
|
|
and line endings are hashed too. You can not use this
|
|
option for data which has 5 dashes at the beginning of a
|
|
line, patch files don't have this. A special armor header
|
|
line tells GnuPG about this cleartext signature option.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--escape-from-lines</term>
|
|
<listitem><para>
|
|
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. This option is not enabled
|
|
by default because it would violate rfc2440.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--passphrase-fd &ParmN;</term>
|
|
<listitem><para>
|
|
Read the passphrase from file descriptor &ParmN;. If you use
|
|
0 for &ParmN;, the passphrase will be read from stdin. This
|
|
can only be used if only one passphrase is supplied.
|
|
<!--fixme: make this print strong-->
|
|
Don't use this option if you can avoid it.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--rfc1991</term>
|
|
<listitem><para>
|
|
Try to be more RFC1991 (PGP 2.x) compliant.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--openpgp</term>
|
|
<listitem><para>
|
|
Reset all packet, cipher and digest options to OpenPGP
|
|
behavior. Use this option to reset all previous
|
|
options like --rfc1991, --force-v3-sigs, --s2k-*,
|
|
--cipher-algo, --digest-algo and --compress-algo to
|
|
OpenPGP compliant values.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--force-v3-sigs</term>
|
|
<listitem><para>
|
|
OpenPGP states that an implementation should generate
|
|
v4 signatures but PGP 5.x recognizes v4 signatures only
|
|
on key material. This options forces v3 signatures for
|
|
signatures on data.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--force-mdc</term>
|
|
<listitem><para>
|
|
Force the use of encryption with appended manipulation
|
|
code. This is always used with the newer cipher (those
|
|
with a blocksize greater than 64 bit).
|
|
This option might not be implemented yet.
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--allow-non-selfsigned-uid</term>
|
|
<listitem><para>
|
|
Allow the import of keys with user IDs which are not self-signed.
|
|
This is only allows the import - key validation will fail and you
|
|
have to check the validity of the key my other means. This hack is
|
|
needed for some German keys generated with pgp 2.6.3in. You should really
|
|
avoid using it, because OpenPGP has better mechanics to do separate signing
|
|
and encryption keys.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--lock-once</term>
|
|
<listitem><para>
|
|
Lock the databases the first time a lock is requested
|
|
and do not release the lock until the process
|
|
terminates.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--lock-multiple</term>
|
|
<listitem><para>
|
|
Release the locks every time a lock is no longer
|
|
needed. Use this to override a previous --lock-once
|
|
from a config file.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--no-verbose</term>
|
|
<listitem><para>
|
|
Reset verbose level to 0.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--no-greeting</term>
|
|
<listitem><para>
|
|
Suppress the initial copyright message but do not
|
|
enter batch mode.
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--no-secmem-warning</term>
|
|
<listitem><para>
|
|
Suppress the warning about "using insecure memory".
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--no-armor</term>
|
|
<listitem><para>
|
|
Assume the input data is not in ASCII armored format.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--no-default-keyring</term>
|
|
<listitem><para>
|
|
Do not add the default keyrings to the list of
|
|
keyrings.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--skip-verify</term>
|
|
<listitem><para>
|
|
Skip the signature verification step. This may be
|
|
used to make the decryption faster if the signature
|
|
verification is not needed.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--with-colons</term>
|
|
<listitem><para>
|
|
Print key listings delimited by colons.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term>--with-key-data</term>
|
|
<listitem><para>
|
|
Print key listings delimited by colons and print the public key data.
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--with-fingerprint</term>
|
|
<listitem><para>
|
|
Same as the command --fingerprint but changes only the format of the output
|
|
and may be used together with another command.
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--no-literal</term>
|
|
<listitem><para>
|
|
This is not for normal use. Use the source to see for what it might be useful.
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--set-filesize</term>
|
|
<listitem><para>
|
|
This is not for normal use. Use the source to see for what it might be useful.
|
|
</para></listitem></varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>--entropy-dll-name &ParmFile;</term>
|
|
<listitem><para>
|
|
This option is only used for the Win32 version of GnuPG and changes the
|
|
default location (c:/gnupg/entropy.dll) of the Winseed DLL to &ParmFile;.
|
|
</para></listitem></varlistentry>
|
|
|
|
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>RETURN VALUE</title>
|
|
<para>
|
|
The program returns 0 if everything was fine, 1 if at least
|
|
a signature was bad, and other error codes for fatal errors.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>EXAMPLES</title>
|
|
<variablelist>
|
|
|
|
<varlistentry>
|
|
<term>gpg -se -r <parameter/Bob/ &ParmFile;</term>
|
|
<listitem><para>sign and encrypt for user Bob</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>gpg --clearsign &ParmFile;</term>
|
|
<listitem><para>make a clear text signature</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>gpg -sb &ParmFile;</term>
|
|
<listitem><para>make a detached signature</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>gpg --list-keys <parameter/user_ID/</term>
|
|
<listitem><para>show keys</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>gpg --fingerprint <parameter/user_ID/</term>
|
|
<listitem><para>show fingerprint</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>gpg --verify <parameter/pgpfile/</term>
|
|
<term>gpg --verify <parameter/sigfile/ &OptParmFiles;</term>
|
|
<listitem><para>
|
|
Verify the signature of the file but do not output the data. The second form
|
|
is used for detached signatures, where <parameter/sigfile/ is the detached
|
|
signature (either ASCII armored of binary) and &OptParmFiles are the signed
|
|
data; if this is not given the name of the file holding the signed data is
|
|
constructed by cutting off the extension (".asc" or ".sig") of
|
|
<parameter/sigfile/ or by asking the user for the filename.
|
|
</para></listitem></varlistentry>
|
|
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
|
|
<refsect1>
|
|
<title>ENVIRONMENT</title>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term>HOME</term>
|
|
<listitem><para>Used to locate the default home directory.</para></listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term>GNUPGHOME</term>
|
|
<listitem><para>If set directory used instead of "~/.gnupg".</para></listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>FILES</title>
|
|
<variablelist>
|
|
|
|
<varlistentry>
|
|
<term>~/.gnupg/secring.gpg</term>
|
|
<listitem><para>The secret keyring</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>~/.gnupg/secring.gpg.lock</term>
|
|
<listitem><para>and the lock file</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>~/.gnupg/pubring.gpg</term>
|
|
<listitem><para>The public keyring</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>~/.gnupg/pubring.gpg.lock</term>
|
|
<listitem><para>and the lock file</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>~/.gnupg/trustdb.gpg</term>
|
|
<listitem><para>The trust database</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>~/.gnupg/trustdb.gpg.lock</term>
|
|
<listitem><para>and the lock file</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>~/.gnupg/options</term>
|
|
<listitem><para>May contain options</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>/usr[/local]/share/gnupg/options.skel</term>
|
|
<listitem><para>Skeleton options file</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>/usr[/local]/lib/gnupg/</term>
|
|
<listitem><para>Default location for extensions</para></listitem>
|
|
</varlistentry>
|
|
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<!-- SEE ALSO not yet needed-->
|
|
|
|
<refsect1>
|
|
<title>WARNINGS</title>
|
|
<para>
|
|
Use a *good* password for your user account and a *good* passphrase
|
|
to protect your secret key. This passphrase is the weakest part of the
|
|
whole system. Programs to do dictionary attacks on your secret keyring
|
|
are very easy to write and so you should protect your "~/.gnupg/"
|
|
directory very well.
|
|
</para>
|
|
<para>
|
|
Keep in mind that, if this program is used over a network (telnet), it
|
|
is *very* easy to spy out your passphrase!
|
|
</para>
|
|
</refsect1>
|
|
|
|
|
|
<refsect1>
|
|
<title>BUGS</title>
|
|
<para>
|
|
On many systems this program should be installed as setuid(root). This
|
|
is necessary to lock memory pages. Locking memory pages prevents the
|
|
operating system from writing memory pages to disk. If you get no
|
|
warning message about insecure memory your operating system supports
|
|
locking without being root. The program drops root privileges as soon
|
|
as locked memory is allocated.
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|
|
|