Provided by: gnupg-agent_2.0.22-3ubuntu1_amd64 bug


       symcryptrun - Call a simple symmetric encryption tool


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


       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:


              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

              The possible exit status codes of symcryptrun are:


                      Some error occured.

                      No valid passphrase was provided.

                      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.