Enhancing Progressive Encryption for Scalable Video Streams

Authors:
Viktor Gergely;Gábor Fehér
Affiliations:
High Speed Networks Laboratory, Department of Telecommunication and Media Informatics, Budapest University of Technology and Economics, Budapest, Hungary H-1117;High Speed Networks Laboratory, Department of Telecommunication and Media Informatics, Budapest University of Technology and Economics, Budapest, Hungary H-1117
Venue:
EUNICE '09 Proceedings of the 15th Open European Summer School and IFIP TC6.6 Workshop on The Internet of the Future
Year:
2009

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Abstract

The technique called progressive encryption is used in many areas of content security. However, the plain algorithm itself is only applicable in real transmission scenarios where no packet loss occurs, otherwise additional error correction techniques need to be used in order to achieve maximum decodeability of network packets. The cipher-stepping method (CSM) described in this article adds error correction to progressive encryption in the case where stream ciphers are used to encrypt stream data. It is also explained how the CSM method along with progressive encryption can be used in the encryption of scalable video streams.