final AEADBlockCipher cipher = createCCMCipher(true, nonce, associatedData.length, message.length);

        // Process AAD (not included in output)
        cipher.processAADBytes(associatedData, 0, associatedData.length);

        // Process message (will be encrypted)
        final byte[] output = new byte[cipher.getOutputSize(message.length)];