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- Title
Interoperable conditional access with video selective encryption for portable devices.
- Authors
Asghar, Mamoona; Makki, Sohail; Fleury, Martin
- Abstract
The pay-TV industry seeks to extend its reach to portable display devices. At the same time, it seeks to ensure a horizontal market by making interoperable the Conditional Access Systems (CASs) employed to protect content. To achieve interoperability for such devices, this paper proposes a form of selective encryption for video that allows simultaneous distribution of a small percentage of video data on a per-CAS basis, allowing sharing of the unencrypted video between the CASs. The bitrate overhead for each additional CAS enabled is found to be on average 7.41 %, whereas the computational overhead amounts to no more than 40 ms for the benchmark sequences tested. Adaptation of CAS to transparent encryption of scalable video is also demonstrated in this paper.
- Subjects
STREAMING video &; television; CONDITIONAL access (Digital communications); DATA encryption; PORTABLE media players; ADVANCED Encryption Standard; BLOCK ciphers
- Publication
Multimedia Tools & Applications, 2017, Vol 76, Issue 11, p13139
- ISSN
1380-7501
- Publication type
Article
- DOI
10.1007/s11042-016-3725-3