Labels:book | hakham | monitor | sky | workwear OCR: DIGITAL MEDIA 469 What about copy protection for Blu-ray discs? Like earlier DVD standards Blu-ray incorporates layers of DRM technologies, but uses AACS instead of Css for authorization and encryption. AACS (Advanced Access Content System) is a DRM technology designed to encrypt and pro- tect content on optical discs. Additional DRM layers include BD+ and BD- ROM Mark. How does AACS work? Like CSS AACS works with an encrypted con- tent stream AACS, however uses much stronger encryption key, which makes quite difficult for hackers to break the encryption using brute force methods. Another difference between the two methods is that CSS uses shared set of encryption keys, and al devices of specific model use the same key. In contrast AACS compliant devices each contain their own FIGURE 8-60 ...
