DVD COPY method related tips 98

	Perfectly Copy DVD movie to DVD(Disc, ISO or Hard Drive), Remove any DVD Copy Protection. Fastest and Easiest Way to Copy Protected DVD, Region and CSS Free. Backup your favorite DVDs.
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The anonymous developers of the decryption program that removes DVD copy protection had an easy time doing it, thanks to a gaffe by a software developer and the surprising weakness of the encryption technology.

Essentially, the two European hackers who developed the DeCSS utility that copies a DVD movie disc were able to break the code because one of the product's licensees inadvertently neglected to encrypt the decryption key.

Industry experts were stunned by the hack because DVD as a movie-playing format is supposed to be copy-proof. In fact, DVD would not be on the market today without the permission of the motion picture industry which, sources say, is reeling from this development.

Breaking DVD's encryption was considered extremely difficult, but once the first key was discovered, the rest fell with ease, since the crackers were able to use their original, valid key as a launch point to find more valid decryption keys.

DeCSS is a tiny (60 KB) utility that copies the encrypted DVD video file, which has a .VOB extension, and saves it to the hard disc without encryption.

Since DVD movies can range in size from 4.7 GB to 9.4 GB and recordable DVD has at best 2.5 capacity (or 5.2GB for double-sided discs), direct DVD copying is unfeasible. But starting next year, 4.7 GB recordable DVD drives will hit the market, making duplication of DVD discs much easier.

DVD uses a security method called the Content Scrambling System. CSS is a form of data encryption used to discourage reading media files directly from the disc without a decryption key. To descramble the video and audio, a 5-byte (40-bit) key is needed.