Presentation an effective algorithm to attack Common Scrambling Algorithm (CSA) in digital video broadcasting (DVB) system
Hamidreza Damghani, Saeed Ghazi Maghrebi, Mohammadreza Moniri Hamedani · Bulletin de la Société Royale des Sciences de Liège · 2016
Common Scrambling Algorithm (CSA) is used for encoding the video streams in video player broadcasting system. For a more security margin, this algorithm is as a cascade combination of stream and block cipher. Common Scrambling Algorithm has been secure against the classic attacks, while it has been vulnerable against the side-channel ones. One of side-channel attacks on Common Scrambling Algorithm in the digital video broadcasting (DVB) will be studied in this paper. Descrambling the block part of this algorithm, the common key for the whole algorithm is gained. With this, a general approach for a high security encoding against the side-channel attacks is provided.