Re:To Fight Big Tech, We Must Seize the Means of Computation
by BXlnt2EachOther on Tuesday October 10, 2023 @12:36PM
(#37834336)
yes, keys can be revoked [in offline players] by inserting a newer disc with a newer version of the "media key block." wikipedia suggests they're up to version 78 of that data.
Some blu-rays force you to update before you can watch them. Also, the key revocation lists can (I believe) be included in the blu-ray itself to make them work offline, too.