Digital Rights Management

Sheppard, Nicholas Paul

doi:10.1201/9781420059823-c8

Cited by 19 publications

(1 citation statement)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As transcoder modification reduces the generality of the solution, requiring all transcoders to be modified, this paper only considers decoder compatible forms of SE. A similar observation applies to secured hardware transcoders such as that of the Secure Video Processor (SVP) alliance [10], which may also be costly compared to an unsecured transcoder. Thus, it is possible to ensure the video is unwatchable owing to distortions, while at the same time permit bitrate transcoding without decryption.…”

Section: Introductionmentioning

confidence: 85%

Effectiveness of crypto-transcoding for H.264/AVC and HEVC video bit-streams

Shah

Asghar

Abdullah

et al. 2019

Multimed Tools Appl

View full text Add to dashboard Cite

To avoid delays arising from a need to decrypt a video prior to transcoding and then re-encrypt it afterwards, this paper assesses a selective encryption (SE) content protection scheme. The scheme is suited to both recent standardized codecs, namely H.264/Advanced Video Coding (AVC) and High Efficiency Video Coding (HEVC). Specifically, the paper outlines a joint cryptotranscoding scheme for secure transrating of a video bitstream. That is to say it generates new video bitrates, possibly as part of an HTTP Adaptive Streaming (HAS) content delivery network. The scheme will reduce the bitrate to one or more lower desired bitrate without consuming time in the encryption/decryption process, which would be the case when full encryption is used. In addition, the decryption key no longer needs to be exposed at intermediate middleboxes, including when transrating is performed in a cloud datacenter. The effectiveness of the scheme is variously evaluated: by examination of the SE generated visual distortion; by the extent of computational and bitrate overheads; and by choice of cipher when encrypting the selected elements within the bitstream. Results indicate that there remains: a content; quantization level (after transrating of an encrypted video); and codectype dependency to any distortion introduced. A further recommendation is that the Advanced Encryption Standard (AES) is preferred for SE to lightweight XOR encryption, despite it being taken up elsewhere as a real-time encryption method.

show abstract

Section: Introductionmentioning

confidence: 85%

Effectiveness of crypto-transcoding for H.264/AVC and HEVC video bit-streams

Shah

Asghar

Abdullah

et al. 2019

Multimed Tools Appl

View full text Add to dashboard Cite

show abstract

Global Standard Setting in Internet Governance

Harcourt

Christou

Simpson

2020

View full text Add to dashboard Cite

The standards development organization’s (SDO) role in Internet governance is notable given its central place in society. The bulk of decision-making for the Internet takes place in technical standards fora, such as the Internet Engineering Task Force (IETF) and World Wide Web Consortium (W3C), which have no formal state or public sector body membership. Recent years have seen a significant degree of spill-over of highly politicized policy areas such as data protection, digital rights management, security, and bandwidth and spectrum to SDOs, policies which were formerly domains of the nation state. SDOs are grappling with the efficiency of cloud storage, limits of spectrum use, and autonomy and management of devices. Security questions abound as demonstrated by the Cambridge Analytica scandal and Snowden revelations. The book breaks new ground by exploring decision-making within SDOs. It provides an invaluable insight into a world, which, although highly technical, affects the way in which citizens live and work on a daily basis. The work stands out from existing literature on Internet governance, which focuses on international organizations such as the United Nations (UN), the Internet Governance Forum (IGF), and the Internet Corporation for Assigned Names and Numbers (ICANN). As such, it adds significantly to the trajectory of research that explores the relationship between politics and protocols. It explains the interplay between different interests and whether civil society and other actors are able to defend and promote citizens’ rights within SDOs. As such, it contributes to knowledge about how the public interest is promoted.

show abstract