BD+ AND BLU-RAY DISC
CASE STUDY: CUSTOMER-FRIENDLY CONTENT PROTECTION FOR BLU-RAY
SPDC technology has been deployed by the Blu-ray Disc format, the next-generation high-definition optical disc. Cryptography Research worked closely with Blu-ray Disc Association leaders Sony, Panasonic, and Twentieth Century Fox on specifications, implementation tests, and usage rules to standardize "BD+". The purpose of BD+ is to help the Blu-ray format recover from security breaches.
BD+ BASICS
Each Blu-ray Disc player includes a specially designed BD+ interpreter (also known as a �Virtual Machine� or �VM�). The BD+ interpreter is carefully designed with security as its objective, and can be easily implemented in either hardware or software with a minimal impact on system resources. The BD+ interpreter provides a basic processing environment for BD+ Content Code, which content authors can use to include title-specific security with each disc.
BD+ Content Code can perform a variety of functions and runs continuously in the interpreter during playback. Since BD+ Content Code is delivered via the disc, an internet connection is not required and the BD+ platform works in offline environments while respecting the privacy of legitimate consumers.
BD+ Content Code is �non-persistent�, meaning it secures only the playback of the content contained on its disc and is deleted when the disc is ejected. The player is then returned to the state it was in prior to the disc being inserted.
ADDITIONAL INFORMATION
A license from Cryptography Research is required to make, use, or sell Blu-ray discs utilizing BD+. In addition, Cryptography Research's BD+ services group provides content code, tools, and services for content providers wishing to use BD+.
BD+ specifications are confidential and are provided by BD+ Technologies LLC to qualified members of the Blu-ray Disc Association. However, general overview information about BD+ and its relationship to other Blu-ray Disc content protection technologies is publicly available:
