Calling GnuPG in Java via a Runtime Process to encrypt and decrypt files - Decrypt always hangs

Question

NOTE: Coming back to this later as I\'ve been unable to find a working solution. Draining the input streams manually instead of using BufferedReaders doesn

Answer 1

This may or may not be the problem (in the decrypt function)

    BufferedReader gpgOutput = new BufferedReader(new InputStreamReader(gpgProcess.getInputStream()));
    BufferedReader gpgErrorOutput = new BufferedReader(new InputStreamReader(gpgProcess.getInputStream()));
    BufferedWriter gpgInput = new BufferedWriter(new OutputStreamWriter(gpgProcess.getOutputStream()));

You are wrapping the result of getInputStream twice. Obviously gpgErrorOutput should be wrapping the error stream, not the input stream.