We propose a generic active authentication framework via hiding programs in digital contents, especially designed for H.264 / MPEG-4 AVC video formats. Besides using cryptography and steganography techniques, we bind a scripting language runtime as process virtual machine, giving the developer the possibility to design their own variant from passive authentication to active code execution.
Yu, Fang; Tang, Wei-Shao; Lin, Yue-Zeng; and Wang, Wei-Ren, "Active Authentication via Hiding Programs in Digital Contents" (2014). ICEB 2014 Proceedings. 59.