See CSS and DeCSS.
"DVD encryption." YourDictionary, n.d. Web. 21 June 2018. <http://www.yourdictionary.com/dvd-encryption>.
DVD encryption. (n.d.). Retrieved June 21st, 2018, from http://www.yourdictionary.com/dvd-encryption
Do you use YourDictionary every day? If not, remember that it is never to late to do so!
Let us be there for you: