![]() ![]() ![]() (3)Content Protection for Recordable MediaĬPRM is a copy protection scheme that is used for Secure Digital (SD) memory cards and recordable DVD discs, including DVD-R, DVD+R, etc. Both of these situations can cause strange behavior and odd error messages on computer systems. In addition, many DVD drives will refuse to complete the “authentication” process and provide a decryption key if the disc and drive are not from the same region. Many DVD drives have a tendency to completely lock out access to an encrypted disc until the drive has been “authenticated”. At the end of the “authentication” process, the drive allows access to the encrypted DVD data and the player can use the key it has obtained to decrypt the DVD data and play the disc. When the disc is inserted into a player or computer, a series of “authentication” handshake key exchanges occur between the DVD drive and the player software. To access the encoded data, the data must be decoded.ĬSS utilizes a proprietary 40-bit cipher that is used to encrypt the data stored on the DVD disc. When using this technology protection, all the information stored in the optical disc needs to be processed by the encoding program. Only the optical drive with the decoder of this area can correctly process the data in the optical disc. Its main working idea is to set the global optical disc to six areas and protect each area with different technologies. (2)Content Scramble System EncryptionĬontent Scramble System Encryption, shorted as CSS, is the main copy protection scheme applied to pre-recorded DVD discs. Fortunately, Analog Protection System can be defeated by passing the composite video signal through a hardware device that restores the proper video signal levels. Through the method of manipulating the signal level of the composite video, video types copied from DVDs encoded with APS become garbled and unwatchable. (1)Analog Protection SystemĪPS incorporated into about 75% of all DVD discs is the Macrovision DVD Copy Protection system, which is an enhanced version of the technology long used to protect video types. Before exploring how to decrypt a DVD and burn it, let’s see how such DVD copy protection work. 2.1 DVD copy protectionįirst, some copy protection methods commonly used on commercial pre-recorded DVD discs includes but not limited to “Analog Protection System (APS) scrambling”, “Content Scramble System (CSS) encryption” as well as “Content Protection for Recordable Media (CPRM)”. Before finding DVD decrypter, let’s learn about the variety of DVD and Blu-ray copy protection. So you need to seek a DVD or a Blu-ray decrypter for help. ![]() It is not easy to copy or rip a DVD or Blu-ray as a backup for later viewing, as you have to know how to decrypt protect DVD and Blu-rays. Many files, especially those DVDs or Blu-rays in high definition are protected to avoid illegal burn. Variety of DVD and Blu-ray Copy Protection So Blu-ray is often the pursuit of those HD movie lovers.Ģ. For the same movie, its Blu-ray version will be clearer than its DVD version. Simply speaking, Blu-ray is the next generation of DVD, so Blu-ray is better than DVD is such leading aspects as capacity and resolution. “Which is better: DVD or Blu-ray”? This is a question frequently asked by those who want to copy and rip DVD and Blu-ray discs/movies/folders and ISO image files. Which Is The Best DVD and Blu-ray Decrypter? 1. ![]()
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