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<H1>SYMCRYPTRUN</H1>
Section: GNU Privacy Guard 2.2 (1)<BR>Updated: 2019-11-23<BR><A HREF="#index">Index</A>
<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>
<B>symcryptrun</B>
- Call a simple symmetric encryption tool
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>
<B>symcryptrun</B>
<B>--class</B>
<I>class</I>
<B>--program</B>
<I>program</I>
<B>--keyfile</B>
<I>keyfile</I>
[<B>--decrypt</B>|<B>--encrypt</B>]
[<I>inputfile</I>]
<P>
<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>
Sometimes simple encryption tools are already in use for a long time
and there might be a desire to integrate them into the GnuPG
framework. The protocols and encryption methods might be non-standard
or not even properly documented, so that a full-fledged encryption
tool with an interface like <B>gpg</B> is not doable.
<B>symcryptrun</B> provides a solution: It operates by calling the
external encryption/decryption module and provides a passphrase for a
key using the standard <B>pinentry</B> based mechanism through
<B>gpg-agent</B>.
<P>
Note, that <B>symcryptrun</B> is only available if GnuPG has been
configured with '--enable-symcryptrun' at build time.
<P>
<P>
<P>
For encryption, the plain text must be provided on STDIN or as the
argument <I>inputfile</I>, and the ciphertext will be output to STDOUT.
For decryption vice versa.
<P>
<I>CLASS</I> describes the calling conventions of the external tool.
Currently it must be given as 'confucius'. <I>PROGRAM</I> is
the full filename of that external tool.
<P>
For the class 'confucius' the option <B>--keyfile</B> is
required; <I>keyfile</I> is the name of a file containing the secret key,
which may be protected by a passphrase. For detailed calling
conventions, see the source code.
<P>
<P>
Note, that <B>gpg-agent</B> must be running before starting
<B>symcryptrun</B>.
<P>
<P>
The following additional options may be used:
<P>
<DL COMPACT>
<DT id="1"><B>-v</B>
<DD>
<B>--verbose</B>
Output additional information while running.
<P>
<DT id="2"><B>-q</B>
<DD>
<DT id="3"><B>--quiet</B>
<DD>
Try to be as quiet as possible.
<P>
<DT id="4"><B>--homedir </B><I>dir</I>
<DD>
Set the name of the home directory to <I>dir</I>. If this option is not
used, the home directory defaults to '<I>~/.gnupg</I>'. It is only
recognized when given on the command line. It also overrides any home
directory stated through the environment variable '<I>GNUPGHOME</I>' or
(on Windows systems) by means of the Registry entry
<I>HKCU\Software\GNU\GnuPG:HomeDir</I>.
<P>
On Windows systems it is possible to install GnuPG as a portable
application. In this case only this command line option is
considered, all other ways to set a home directory are ignored.
<P>
To install GnuPG as a portable application under Windows, create an
empty file named '<I>gpgconf.ctl</I>' in the same directory as the tool
'<I>gpgconf.exe</I>'. The root of the installation is then that
directory; or, if '<I>gpgconf.exe</I>' has been installed directly below
a directory named '<I>bin</I>', its parent directory. You also need to
make sure that the following directories exist and are writable:
'<I>ROOT/home</I>' for the GnuPG home and '<I>ROOT/var/cache/gnupg</I>'
for internal cache files.
<P>
<P>
<DT id="5"><B>--log-file </B><I>file</I>
<DD>
Append all logging output to <I>file</I>. Use '<I>socket://</I>' to log
to socket. Default is to write logging information to STDERR.
<P>
</DL>
<P>
<P>
<P>
The possible exit status codes of <B>symcryptrun</B> are:
<P>
<DL COMPACT>
<DT id="6"><B>0</B>
<DD>
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Success.
<DT id="7"><B>1</B>
<DD>
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Some&nbsp;error&nbsp;occurred.
<DT id="8"><B>2</B>
<DD>
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;No&nbsp;valid&nbsp;passphrase&nbsp;was&nbsp;provided.
<DT id="9"><B>3</B>
<DD>
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The&nbsp;operation&nbsp;was&nbsp;canceled&nbsp;by&nbsp;the&nbsp;user.
<P>
</DL>
<P>
<P>
<A NAME="lbAE">&nbsp;</A>
<H2>SEE ALSO</H2>
<B><A HREF="/cgi-bin/man/man2html?1+gpg">gpg</A></B>(1),
<B><A HREF="/cgi-bin/man/man2html?1+gpgsm">gpgsm</A></B>(1),
<B><A HREF="/cgi-bin/man/man2html?1+gpg-agent">gpg-agent</A></B>(1),
<P>
The full documentation for this tool is maintained as a Texinfo manual.
If GnuPG and the info program are properly installed at your site, the
command
<P>
<DL COMPACT><DT id="10"><DD>
<PRE>
info gnupg
</PRE>
</DL>
<P>
should give you access to the complete manual including a menu structure
and an index.
<P>
<P>
<P>
<P>
<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT id="11"><A HREF="#lbAB">NAME</A><DD>
<DT id="12"><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT id="13"><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT id="14"><A HREF="#lbAE">SEE ALSO</A><DD>
</DL>
<HR>
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