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2010, published by EURASIP. 1 SELECTIVE ENCRYPTION OFTHE MC-EZBC BITSTREAM ANDRESIDUAL INFORMATION

By Heinz Hofbauerand Andreasuhl and Theuseofdigitalvideointodaysworldisubiquitous Videos

Abstract

When selective encryption is used for security in DRM schemessome informationofthe originalbitstream is intentionallyleft in plaintext. Thiscanhave variousreasons, e.g. generatingpreviewversionsfortryandbuyscenarios. Inthe case of the MC-EZBC there is also the goal of retaining the scaling capability in the encrypted domain. However, since parts of the bitstream remain in plaintext this information is available to a potential attacker at all times. In this paper we will assess which attacks can be done with this residual information. Consequently we will extend a prior version of selective encryptionfor the MC-EZBC to include motion vectors

Year: 2011
OAI identifier: oai:CiteSeerX.psu:10.1.1.185.2052
Provided by: CiteSeerX
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