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SYMCRYPTRUN(1)                 GNU Privacy Guard                SYMCRYPTRUN(1)

       symcryptrun - Call a simple symmetric encryption tool

       symcryptrun --class class --program program --keyfile keyfile [--decrypt|--encrypt] [inputfile]

       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 pro-
       vides 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

       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'.  PRO-
       GRAM 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:


              Output additional information while running.


              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

       --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.

       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.

GnuPG 2.0.14                      2014-06-30                    SYMCRYPTRUN(1)