NAME
symcryptrun - Call a simple symmetric encryption tool
SYNOPSIS
symcryptrun --class class --program program --keyfile keyfile
[--decrypt|--encrypt] [inputfile]
DESCRIPTION
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 gpg is not doable. symcryptrun provides a solution: It
operates by calling the external encryption/decryption module and
provides a passphrase for a key using the standard pinentry based
mechanism through gpg-agent.
Note, that symcryptrun is only available if GnuPG has been configured
with '--enable-symcryptrun' at build time.
For encryption, the plain text must be provided on STDIN or as the
argument inputfile, and the ciphertext will be output to STDOUT. For
decryption vice versa.
CLASS describes the calling conventions of the external tool.
Currently it must be given as 'confucius'. PROGRAM is the full
filename of that external tool.
For the class 'confucius' the option --keyfile is required; keyfile 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.
Note, that gpg-agent must be running before starting symcryptrun.
The following additional options may be used:
-v
--verbose
Output additional information while running.
-q
--quiet
Try to be as quiet as possible.
--homedir dir
Set the name of the home directory to dir. If this option is not
used, the home directory defaults to '~/.gnupg'. It is only
recognized when given on the command line. It also overrides
any home directory stated through the environment variable
'GNUPGHOME' or (on W32 systems) by means of the Registry entry
HKCU\Software\GNU\GnuPG:HomeDir.
--log-file file
Append all logging output to file. Default is to write logging
information to STDERR.
The possible exit status codes of symcryptrun are:
0 Success.
1 Some error occured.
2 No valid passphrase was provided.
3 The operation was canceled by the user.
SEE ALSO
gpg(1), gpgsm(1), gpg-agent(1),
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
info gnupg
should give you access to the complete manual including a menu
structure and an index.