Encryption Techniques for H.264/AVC Video Coding Based on Intra-Prediction Modes: Insights from Literature

There are tremendous impacts of advancement in information and telecommunication technology over the use of multimedia data. Multimedia data are stored and transmitted through the wired and wireless network, where they can be easily accessed. Moreover, the advancement in the technology has also increased the threats on their security. Thus safeguarding the data from unauthorized access and protecting the integrity and authenticity has become mandatory for transmission as well as storage. Encryption is one of the best technologies in Digital Rights Management(DRM)scheme which is used to protect copyright works. This paper summarizes some of the previous work in the area of encryption techniques for H.264/AVC video based on one of the effective areas in encoding process which is intra-prediction coding. The encryption process varies according to entropy coding method used. Therefore, we explained different encryption techniques for each entropy coding method. Each encryption technique based on intra coding has its advantages and disadvantages which discussed through the paper.