Editing Common Scrambling Algorithm (section)

{{Short description|Encryption algorithm used by DVB television standard}}
The '''Common Scrambling Algorithm''' ('''CSA''') is the [[encryption algorithm]] used in the [[Digital Video Broadcasting|DVB]] [[digital television]] broadcasting for encrypting [[video coding|video stream]]s.

CSA was specified by [[ETSI]] and adopted by the DVB consortium in May 1994. It is being succeeded by CSA3,<ref>{{Cite web |url=http://farncombe.eu/whitepapers/FTLCAWhitePaperTwo.pdf |title= Towards a Replacement for the DVB Common Scrambling Algorithm|access-date=2012-11-20 |archive-url=https://web.archive.org/web/20100705002144/http://farncombe.eu/whitepapers/FTLCAWhitePaperTwo.pdf |archive-date=2010-07-05 |url-status=dead | date=2009 | author=((Farncombe Consulting Group)) | type = white paper | place= Basingstoke}}</ref> based on a combination of 128-bit [[Advanced Encryption Standard|AES]] and a confidential block cipher, XRC. However, CSA3 is not yet in any significant use, so CSA continues to be the dominant cipher for protecting DVB broadcasts.