A video authentication scheme using digital signature standard and secure hash algorithm for H.264/AVC main profile.

摘要

Multimedia authentication techniques are required to prove the validity of legal multimedia content and establish the identity of the content creator. Digital signature is one way of authenticating multimedia content. Typically digital signature uses cryptographic techniques to ensure the integrity of the multimedia bitstream. In this thesis we propose a digital signature scheme to authenticate the video bitstream generated by H.264/AVC Main Profile by using features extracted from the video and identify the video originator. This signature is unique to every coded video sequence and is generated using the Digital Signature Standard (DSS). Also, we developed a technique to identify the tampered locations and point out sender forgery in case of an authentication failure.; Results demonstrate that our proposed algorithm is robust to temporal and spatial manipulations.