Merge "If a console doesn't exist, read password from stdin."

    }

    /**

     * Reads the password from console and returns it as a string.

     * If a console doesn't exist, reads the password from stdin

     * If a console exists, reads the password from console and returns it as a string.

     *

     * @param keyFile The file containing the private key.  Used to prompt the user.

     */

    private static String readPassword(File keyFile) {

        Console console;

        char[] pwd;

        if((console = System.console()) != null &&

           (pwd = console.readPassword("[%s]", "Enter password for " + keyFile)) != null){

        if ((console = System.console()) == null) {

            System.out.print("Enter password for " + keyFile + " (password will not be hidden): ");

            System.out.flush();

            BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));

            try {

                return stdin.readLine();

            } catch (IOException ex) {

                return null;

            }

        } else {

            if ((pwd = console.readPassword("[%s]", "Enter password for " + keyFile)) != null) {

                return String.valueOf(pwd);

            } else {

                return null;

            }

        }

    }

    /**

     * Decrypt an encrypted PKCS#8 format private key.