What are DeCSS and DivX;-)?
CSS (Content Scrambling System) is an encryption and authentication scheme intended to prevent DVD movies from being digitally copied. See 1.11 for details. DeCSS refers to the general process of defeating CSS, as well as to DeCSS source code and programs. Computer software to decrypt CSS was released to the Internet in October 1999 (see Dana Parker’s article at www.emediapro.net/news99/news111.html), although other “ripping” methods were available before that (see www.7thzone.com, go.to/dvdsoft, www.neophile.net, and www.dfbills.com/powerbook/dvd.html). The difference between circumventing CSS encryption with DeCSS and intercepting decrypted, decompressed video with a DVD ripper is that DeCSS can be considered illegal under the DMCA and the WIPO treaties. The DeCSS information can be used to “guess” at master keys, such that a standard PC can generate the entire list of 400 keys, rendering the key secrecy process useless. In any case, there’s not much appeal to being able to copy a se
CSS (Content Scrambling System) is an encryption and authentication scheme intended to prevent DVD movies from being digitally copied. See 1.11 for details. DeCSS refers to the general process of defeating CSS, as well as to DeCSS source code and programs. Computer software to decrypt CSS was released to the Internet in October 1999 (see Dana Parker’s article at www.emediapro.net/news99/news111.html), although other “ripping” methods were available before that (see www.7thzone.com, go.to/dvdsoft, www.neophile.net, and www.dfbills.com/powerbook/dvd.html). The difference between circumventing CSS encryption with DeCSS and intercepting decrypted, decompressed video with a DVD ripper is that DeCSS can be considered illegal under the DMCA and the WIPO treaties. The DeCSS information can be used to “guess” at master keys, such that a standard PC can generate the entire list of 400 keys, rendering the key secrecy process useless.
CSS (Content Scrambling System) is an encryption and authentication scheme intended to prevent DVD movies from being digitally copied. See 1.11 for details. DeCSS refers to the general process of defeating CSS, as well as to DeCSS source code and programs. Computer software to decrypt CSS was released to the Internet in October 1999 (see Dana Parker’s article at www.emediapro.net/news99/news111.html), although other “ripping” methods were available before that (see http://www.7thzone.com/, go.to/dvdsoft, http://www.neophile.net/, and www.dfbills.com/powerbook/dvd.html). The difference between circumventing CSS encryption with DeCSS and intercepting decrypted, decompressed video with a DVD ripper is that DeCSS can be considered illegal under the DMCA and the WIPO treaties. The DeCSS information can be used to “guess” at master keys, such that a standard PC can generate the entire list of 400 keys, rendering the key secrecy process useless.
