公开(公告)号：US20190073472A1

公开(公告)日：2019-03-07

申请号：US15694881

申请日：2017-09-04

Applicant: Cisco Technology, Inc.

Inventor： David Darmon ,  Lev Yudalevich ,  Leonid Frenkel ,  Yair Arzi ,  Yigal Dahan ,  Eyal Wasserman ,  Yaacov Belenky

IPC: G06F21/52 ,  G06F21/57

Abstract: In one embodiment a device is described, the device including a memory operative to store an program, a storage operative to store a reference check value for at least one operation in the program, a processor operative to execute the program, including, determining a run-time check value upon execution of the at least one operation in the program, comparing the stored reference check value with the run-time check value, storing the run-time check value as a pre-branch run-time check value prior to entering a conditional branch of the program when the compared stored reference check value and the run-time check value are equal values, resetting the run-time check value of the executing program to the pre-branch run-time check value upon exiting the conditional branch of the program, wherein the reference check value, the run-time check value, and the pre-branch run-time check value are determined as a result of a single function. Related apparatus, methods and systems are also described.

公开(公告)号：US10331862B2

公开(公告)日：2019-06-25

申请号：US15492002

申请日：2017-04-20

Applicant: Cisco Technology, Inc.

Inventor： Yoav Glazner ,  Eyal Wasserman

IPC: G06F21/10 ,  H04L9/08 ,  H04N5/232 ,  G06F3/01 ,  H04N5/04

Abstract: In one embodiment, a method for protecting video content is implemented on at least one computing device and includes: receiving the video content as encrypted video data on the at least one computing device, determining a viewport within the encrypted video data, where the viewport represents a subset of a larger amount of video that is presentable at a specific point in time in the video content, decrypting at least a portion of the encrypted video data corresponding to the viewport, where at least a remaining portion of the video that is time synchronized with the viewport remains encrypted, rendering viewport video from the viewport, and playing the viewport video.

公开(公告)号：US20180307806A1

公开(公告)日：2018-10-25

申请号：US15492002

申请日：2017-04-20

Applicant: Cisco Technology, Inc.

Inventor： Yoav GLAZNER ,  Eyal Wasserman

IPC: G06F21/10 ,  H04L9/08 ,  H04N5/232 ,  G06F3/01 ,  H04N5/04

CPC classification number: G06F21/10 ,  G06F3/012 ,  G06T2210/22 ,  H04L9/088 ,  H04L9/14 ,  H04L2209/605 ,  H04N5/23206 ,  H04N5/23238 ,  H04N21/21805 ,  H04N21/2187 ,  H04N21/2347 ,  H04N21/4405 ,  H04N21/4627 ,  H04N21/6587 ,  H04N21/816

Abstract: In one embodiment, a method for protecting video content is implemented on at least one computing device and includes: receiving the video content as encrypted video data on the at least one computing device, determining a viewport within the encrypted video data, where the viewport represents a subset of a larger amount of video that is presentable at a specific point in time in the video content, decrypting at least a portion of the encrypted video data corresponding to the viewport, where at least a remaining portion of the video that is time synchronized with the viewport remains encrypted, rendering viewport video from the viewport, and playing the viewport video.