Whenever I decrypt a file, everything works fine (i.e. the file is decrypted and the decrypted message is sent to STDOUT or a file depending on how I execute the command).

The problem is that the following message gets printed out:

That would be fine, except it gets printed to STDERR, so my program thinks there is an error, when there really isnt (or at least it seems).  I assume it has to get printed to STDERR since the actual decrypted message is sent to STDOUT.  Other than that, is there a reason for this message and/or a way to prevent this from being printed out?

Thanks in advance for any help.