Quadrox Video Authentication - Manual (Page 3)

Video Authentication Manual 3
Version 4.4 Series
1 Introduction
The latest generation of networked systems promises a much easier and faster way of moving
video around (e.g. police, court room…), by simply sending it over the Internet. A public
network like the Internet is not exactly the safest when talking about transport. However,
digital video can be digitally secured and the possibility to trace the video back to its origin is
now a reality. This technology is called digitally signing the video.
A digital signature is a cryptographically encoded text that contains information about the
exported movie file that was signed and about the entity that created the signature. Each
export file has its own signature.
A certificate is again a cryptographically protected text that contains the electronic key with
which the owner of the certificate can sign digital documents or content. This certificate is
only valuable if it is trusted by the authorities. (See Chapter 2 Certificate Management)
The following diagram shows how a digital signature is used in the video authentication
process. A full step by step explanation can be found in Chapter 3 Video Authentication
Process.
Video Authentication Process