encryptstring.java

public static String encryptByteArray(byte[] clearData,
	PGPPublicKey encKey, boolean withIntegrityCheck, boolean armor)
	throws IOException, PGPException, NoSuchProviderException {
 
	ByteArrayOutputStream encOut = new ByteArrayOutputStream();
 
	OutputStream out = encOut;
	if (armor) {
		out = new ArmoredOutputStream(out);
	}
 
	ByteArrayOutputStream bOut = new ByteArrayOutputStream();
 
	PGPCompressedDataGenerator comData = new PGPCompressedDataGenerator(
		PGPCompressedDataGenerator.ZIP);
	
	OutputStream cos = comData.open(bOut); // open it with the final
 
	PGPLiteralDataGenerator lData = new PGPLiteralDataGenerator();
 
	OutputStream pOut = lData.open(cos, PGPLiteralData.BINARY,
		PGPLiteralData.CONSOLE, clearData.length, 
		new Date() // current time
	);
	
	pOut.write(clearData);
 
	lData.close();
	comData.close();
 
	PGPEncryptedDataGenerator cPk = new PGPEncryptedDataGenerator(
		PGPEncryptedData.CAST5, withIntegrityCheck, new SecureRandom(),
		"BC");
 
	cPk.addMethod(encKey);
 
	byte[] bytes = bOut.toByteArray();
 
	OutputStream cOut = cPk.open(out, bytes.length);
 
	cOut.write(bytes); 
 
	cOut.close();
 
	out.close();
 
	return encOut.toString();
}