CPRM

CPRM will be media and recording-related. Each blank recordable DVD disc has a 64-bit disc ID placed in the BCA (Burst Cutting Area Group engraved area). When the protected content is burned to disc, the disc ID, it can obtain 56 C2 (Cryptomeria) password for encryption. During playback, the BCA is read the disc ID, and then generate the disc key needed to decrypt the content. If the disc content from being copied to other media, the disc ID will be lost or error, the data will not be able to decrypt.

Common problems related to partition recovery and our solutions: