Patent ID: 8862866
Filing Date: 2014-10-14
Classification: H04L,H04W

Abstract:
1. A method performed by a communication device, said method comprising: receiving a frame, wherein the frame indicates a version of a key to be used in an encryption system; said communication device preparing a plurality of frames, each frame having a header and data; and on a frame-by-frame basis, said communication device processing each individual frame by: said communication device communicating the plurality of frames to a recipient device, wherein the security control bits include one or more security mode bits and integrity level bits, wherein the one or more security mode bits are used to indicate whether encryption is on or off, wherein the integrity level bits indicate which of at least four integrity levels is utilized, the integrity levels corresponding to signing operations of a sender of increasing strength, and wherein said security control bits allow the recipient device to identify said security level for each individual frame and to reject an individual frame if said security level does not comply with a minimum security level required by the recipient device.