Patent ID: 8347081

Claim:
A method comprising: receiving a certificate having a unique device identification associated with a first device; incrementally receiving, at a second device, a revocation list having unauthorized device identifications, wherein the revocation list is received incrementally in small portions such that the revocation list is not required to be stored at a memory of the second device; incrementally comparing the unique device identification with the unauthorized device identifications listed in the incrementally-received revocation list, wherein incremental comparing is performed at a processor of the second device and without having to store the revocation list at the memory of the second device, wherein incremental comparing includes running a hash function to process each small portion of the revocation list, update results associated with each processed small portion, and process a subsequent portion of the revocation list, and wherein each small portion lists one or more unauthorized device identifications; and transmitting media content from the second device to the first device, if the unique device identification is not matched with the unauthorized device identifications of the revocation list.