The efficiency improved scheme for secure access control of digital video distribution

Abstract

The application of digital video distribution is reaching a wider spectrum of customers, in which secure access control of video content during rendering and transmission has become more and more necessary and urgent. Considering the limited computing power and the real-time requirement of set-top boxes, the efficiency of the decryption process is particularly significant. In this paper, we try to search for a scheme to improve the efficiency of the exist schemes for access control of digital video in set-top boxes mainly from three approaches. Firstly, with the specific comparison between AES and RC6, we conclude that RC6 provides sufficient security for set-top boxes, and the decryption process of RC6 is more efficient. Secondly, we improve the efficiency of the codecs process by adopting a latest more efficient video codec VP9, which is an open and royalty free video codec and is proved to be more efficient than H.264. Finally, we could only selective encrypt and decrypt some essential parts of the entire video stream during the codecs process to further improve the efficiency. In a conclusion, we propose a more efficient idea to provide access control of digital video in settop boxes. This scheme is proved to be more efficient and more practical.

(Retracted) Role of video sensors in observing visual image design in the construction of smart cities

“…It also introduces the VI business strategy to enhance the overall image of the city, but its research theory has not been implemented in most cities. 3 This article is suitable for situations where the amount of structured or semistructured data is large, depending on the context of the rapidly changing information age. The big data platform is the supporting platform of the application platform.…”

“…The essence of the CIS principle explains the creation of a unique system for identifying city images. It also introduces the VI business strategy to enhance the overall image of the city, but its research theory has not been implemented in most cities 3 …”