public static byte[] encrypt(            byte[]  clearData,            char[]  passPhrase,            String  fileName,            int     algorithm,            boolean armor)            throws IOException, PGPException, NoSuchProviderException        {        if (fileName == null)        {            fileName= PGPLiteralData.CONSOLE;        }  `               byte[] compressedData = compress(clearData, fileName, CompressionAlgorithmTags.ZIP);        ByteArrayOutputStream bOut = new ByteArrayOutputStream();        OutputStream out = bOut;        if (armor)        {            out = new ArmoredOutputStream(out);        }        JcePGPDataEncryptorBuilder encryptorBuilder = new JcePGPDataEncryptorBuilder(algorithm)                .setSecureRandom(new SecureRandom()).setProvider("BC");        PGPEncryptedDataGenerator encGen = new PGPEncryptedDataGenerator(encryptorBuilder);        encGen.addMethod(new JcePBEKeyEncryptionMethodGenerator(passPhrase).setProvider("BC"));        OutputStream encOut = encGen.open(out, compressedData.length);        encOut.write(compressedData);        encOut.close();        if (armor)        {            out.close();        }        return bOut.toByteArray();    }    private static byte[] compress(byte[] clearData, String fileName, int algorithm) throws IOException    {        ByteArrayOutputStream bOut = new ByteArrayOutputStream();        PGPCompressedDataGenerator comData = new PGPCompressedDataGenerator(algorithm);        OutputStream cos = comData.open(bOut); // open it with the final destination        PGPLiteralDataGenerator lData = new PGPLiteralDataGenerator();        // we want to generate compressed data. This might be a user option later,        // in which case we would pass in bOut.        OutputStream  pOut = lData.open(cos, // the compressed output stream                PGPLiteralData.BINARY,                fileName,  // "filename" to store                clearData.length, // length of clear data                new Date()  // current time        );        pOut.write(clearData);        pOut.close();        comData.close();        return bOut.toByteArray();    }public static void main(String[] args) throws IOException, PGPException, NoSuchProviderException { String passPhrase = "Dick Beck";        char[] passArray = passPhrase.toCharArray();        byte[] original = "Hello world".getBytes();        System.out.println("Starting PGP test");        byte[] encrypted = encrypt(original, passArray, "iway", PGPEncryptedDataGenerator.CAST5, true);        System.out.println("\nencrypted data = '"+new String(encrypted)+"'");    }

output:encrypted data = '-----BEGIN PGP MESSAGE-----Version: BCPG v@RELEASE_NAME@ww0EAwMC04oCHn2+Qexg0jwBFShLDxhRNRs9eQUiCFOWSdqywdXDopTQubtGSpBkkBvwWFJbWuxrIebzbXALaNsG+2QFP5NJ5FgL8AE==G7YN-----END PGP MESSAGE-----'