A method of and device for granting access to content on a storage medium, including obtaining cryptographic data from a property, such as a wobble, of the storage medium, reading helper data from the storage medium, and granting the access based on an application of a delta-contracting function to the...http://www.google.fr/patents/US20090259852?utm_source=gb-gplus-shareBrevet US20090259852 - RELIABLE STORAGE MEDIUM ACCESS CONTROL METHOD AND DEVICE
RELIABLE STORAGE MEDIUM ACCESS CONTROL METHOD AND DEVICE
Numéro de demande: 12/488,459 Numéro de publication: US 2009/0259852 A1 Date de dépôt: 19 juin 2009 Brevet délivré: US8065533 ( Date de délivrance 22 nov. 2011)
