Patent ID: 9635004
Date: 2017-04-25
CPC Classifications: H04L

Claim:
1. A method for verifying segment integrity and authenticity for adaptive streaming, the method comprising: receiving at a data processing system a segment of a media stream and an adjacent segment of the media stream, the media stream comprising a plurality of segments; determining, with the data processing system, a segment digest or a segment digital signature for the segment of the media stream and an adjacent segment digest or an adjacent segment digital signature for the adjacent segment of the media stream; determining, with the data processing system, if a list of correct digests or a list of correct digital signatures contains an entry for the segment; determining, with the data processing system, whether the segment has been modified according to the segment digest or the segment digital signature and according to the list of correct digests or the list of correct digital signatures; determining, with the data processing system, whether the temporal order of the segment is correct according to the adjacent segment digest or the adjacent segment digital signature and according to the list of correct digests or the list of correct digital signatures; causing a user equipment (UE) to discard the segment if the segment has been modified; and causing the UE to discard the segment if the temporal order of the segment with respect to other segments in the media stream is not correct.