다중기기 시청환경을 지원하기 위한SVC와 CAS 결합 기법
SVC and CAS Combining Scheme for Support Multi-Device Watching Environment
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초록
IPTV나 DTV에서 사용하는 CAS는 하나의 스트리밍으로 하나의 콘텐츠만을 전송하는 환경이지만 SVC와의 결합을 통해 사용자의 다양한 비디오 어플리케이션을 단일 스트리밍으로 지원하도록 개선할 수 있다. 이러한 환경에서는 효율성을 우선적으로 설계하여야 하며, 서비스 등급별 과금 정책을 위해 계층적 키 관리 기법의 적용이 필요하다. 본 논문에서는 CAS에 SVC를 적용하기 위해 고려해야할 점들에 대해 살펴보고 CAS를 통해 암호화된 SVC 콘텐츠를 전송하는 모듈을 제안한다. 제안하는 기법을 적용하면 단일 스트림을 사용하는 CAS 에서도 다중기기를 이용하여콘텐츠를 시청할 수 있으며, 사용자에게 시청 화질에 따른 과금 부과가 가능하다. 제안하는 기법의 안전성은 CAS와단방향 해시 함수의 안전성에 기반한다. 또한, 실험 결과 10%미만의 적은 오버헤드로 스트리밍 서비스 되는 SVC 콘텐츠를 안전하게 보호할 수 있다는 장점이 있다.
Abstract
CAS used in IPTV or DTV has an environment of sending single type of contents through single streaming. But it can beimproved to support users’ various video applications through single streaming by combining with SVC. For such anenvironment, efficiency should be firstly considered, and hierarchical key management methods for billing policy by servicelevels should be applied. This study aims to look into considerations to apply SVC to CAS and propose SVC encryption inCAS environment. The security of the proposed scheme is based on the safety of CAS and oneway hash function. If theproposed scheme is applied, scalability can be efficiently provided even in the encrypted contents and it is possible to billusers according to picture quality. In addition, the test results show that SVC contents given by streaming service with theaverage less than 10%overhead can be safely protected against illegal uses.
참고문헌 (35)
- EBU Project Group B, "CA", Functional model of a conditional access system, 1995, ~
- F.K. Tu, "On key distribution management for conditional access system on pay-TV system", IEEE Transactions on Consumer Electronics, 45, pp.151~158 (1999)
- F. Kamperman, "Conditional access system ineteroperability through software downloading", IEEE Transaction on Consumer Electronics, 47(1), pp.47~53 (2001)
- Y. Jeong, "A novel protocol for downloadable CAS", IEEE Transactions on Consumer Electronics, 54(3), pp.1236~1243 (2008)
- "ISO", IEC JTC 1, WG 11 N8750: Joint Scalable Video Model(JSVM), 2007[DOI]
- "Advanced Video Coding for Generic Audiovisual Services", ITU-T Rec. H.264 Version 8 (including SVC extension), ~ (2007)
- J.R. Ohm, "Advances in scalable video coding", Proceedings of the IEEE, 93(1), pp.42~56 (2005)
- H. Schwarz, "Overview of the scalable video coding extension of the H.264", AVC standard, 2007, pp.17(9), ~
- H. Schwarz, "Analysis of hierarchical B pictures and MCTF", IEEE International Conference on Multimedia and Expo, pp.1929~1932 (2006)
- T.C. Thang, "Multilayer adaptation for MGSbased SVC bitstream", The 16th ACM Conference on Multimedia, pp.689~692 (2008)
- T.C. Thang, "SVC adaptation: standard tools and supporting methods", EURASIP Signal Process: Image Communication, 24, pp.214~228 (2009)
- T. Stockhammer, "H.26L", JVT coding network abstraction layer and ip-based transport, 2002, pp.2, 485~488
- A. Elleftheriadis, "System and transport internet of SVC", IEEE Transactions on Circuits and Systems for Video Technology, 17(9), pp.1149~1163 (2007)
- W. Li, "Security analysis of DVB common scrambling algorithm", The 1st International Symposium on Data, Privacy, and E-Commerce (ISDPE 2007), pp.271~273 (2007)
- R.P. Weinmann, "Analysis of the DVB Common Scrambling Algorithm", The 8th IFIP TC–6 TC–11 Conference on Communications and Multimedia Security, pp.195~207 (2007)
- K. Wirt, "Fault attack on the DVB common scrambling algorithm", Computational Science and Its Applications, pp.577~584 (2005)
- D. Boneh, "On the importance of checking cryptographic protocols for faults, EUROCRYPT ’97", LNCS, 1233, pp.37~51 (1997), Springer-Verlag
- E. Biham, "Differential fault analysis of secret key cryptosystems, Crypto 1997", LNCS, 1294, pp.513~525 (1997), Springer-Verlag Berlin
- P. Kocher, "Differential power analysis, CRYPTO’99", LNCS, 1666, pp.388~397 (1999), Springer-Verlag
- M. Zhu, "Hierarchical key distribution scheme for conditional access system in DTV broadcasting", International Conference on Computational Intelligence and Security, pp.1532~1535 (2006)
- W. Kanjanarin, "Scrambling and key distribution scheme for digital television", IEEE International Conference on Networks, pp.140~145 (2001)
- E. Yoon, "A new secure key exchange protocol between STB and smart card in DTV broadcasting, Workshop on Intelligence and Security Informatics (WISI 2006)", LNCS, 3917, pp.165~166 (2006)
- E. Yoon, "Robust key exchange protocol between set-top box and smart card in DTV broadcasting", INFORMATICA, 20(1), pp.139~150 (2009)
- T. Hou, "Based on cryptosystem secure communication between set-top box and smart card in DTV broadcasting", TENCON 2007, IEEE Region 10 Conference, pp.1~5 (2007)
- H. Kim, "Secure communication in digital TV broadcasting", International Journal of Computer Science and Network Security, 8(9), pp.1~5 (2008)
- T. Jiang, "Secure communication between set-top box and smart card in DTV broadcasting", IEEE Transaction on Consumer Electronics, 50(3), pp.882~886 (2004)
- J. Son, "PVR: a novel PVR scheme for content protection", IEEE Transactions on Consumer Electronics, 57(1), pp.173~177 (2011)
- Draft reference software for SVC, "Joint Video Team (JVT) of ISO", IEC MPEG&ITU-T VCEG, ITU-T, pp.2008, ~
- G.V. Wallendael, "Fast channel switching based on SVC in IPTV environments", IEEE Transactions on Broadcasting, 58(1) (2012)
- Y. Lee, "Reducing IPTV channel switching time using H.264 scalable video coding", IEEE Transactions on Consumer Electronics, 54(2), pp.912~919 (2008)
- S. Siddarth, "To zap or not to zap: a study of the determinants of channel switching during Commercials", Marketing Science, 17(2), pp.124~138 (1998)
- H. Brosius, "The loyalty of television viewing: how consistent is TV viewing behavior?", Journal of Broadcasting and Electronic Media, 36(3), pp.321~335 (1992)
- C. Li, "Layered encryption for scalable video coding", International Congress on Image and Signal Processing, pp.1~4 (2009)
- 조태남, "H.264", SVC에 대한 접근 제어 방법 및 키 관리 방법, 2010, pp.17(5), 415~427[DOI]
- D. Diaz-Sanchez, "A H.264 SVC distributed content protection system with flexible key stream generation", IEEE Interantional Conference on Consumer Electronics – berlin (ICCE-Berlin), pp.66~70 (2012)