Free Knowledge Culture Calendar/October 6

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Today in 1999 was the first release of DeCSS (version 1.1b). It contained the decryption algorithm for the Content Scramble System and a decryption key extracted from the Xing DVD player software. Its source code was leaked a little later and helped write libdvdcss which cracks the copy-prevention system and allows DVD-Video playback on free operating systems.


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