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Most people do not understand the knowledge points of this article "what is the meaning of css system?", so the editor summarizes the following content, detailed content, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this "what is the meaning of css system" article.

The English full name of css system is "Content Scrambling System", which refers to the content disturbance system and is a data encryption and authentication method to prevent video files from being copied directly from the disk.

This article operating environment: windows7 system, Dell G3 computer.

What is the css system?

Content disruption system (Content Scrambling System) is a method of data encryption and authentication that prevents video files from being copied directly from the disk. Everyone who gets the license can get a key, which is taken from the parent set of keys on the encrypted CD. As long as the key is removed from a later CD, the license will be invalid.

Principle

The CSS decryption algorithm exchanges keys with the drive unit to generate keys for encryption. The generated key is used to disrupt the exchange of the disc key and the film and television program key. The film and television program key is used to decrypt the data on the disk. DVD players with CSS circuits decrypt the data before decoding and playing it. If it is a computer, then the DVD decoding hardware and software must add a CSS decryption module. All DVD-ROM drives have an additional firmware that can exchange authentication and decryption keys with the CSS module in the computer.

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