public int update()

in src/main/java/org/apache/commons/crypto/cipher/OpenSslGaloisCounterMode.java [281:304]

• 18 lines of code
• 2 McCabe index (conditional complexity)

    public int update(final ByteBuffer input, final ByteBuffer output) throws ShortBufferException {
        checkState();

        processAAD();

        final int len;
        if (this.cipherMode == OpenSsl.DECRYPT_MODE) {
            // store internally until doFinal(decrypt) is called because
            // spec mentioned that only return recovered data after tag
            // is successfully verified
            final int inputLen = input.remaining();
            final byte[] inputBuf = new byte[inputLen];
            input.get(inputBuf, 0, inputLen);
            inBuffer.write(inputBuf, 0, inputLen);
            return 0;
        }
        len = OpenSslNative.update(context, input, input.position(),
                input.remaining(), output, output.position(),
                output.remaining());
        input.position(input.limit());
        output.position(output.position() + len);

        return len;
    }