Patent ID: 11917073
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 23:
24. A node for use in a communications network, the node being configured to provide integrity protection for a message, the node comprising:
a processor; and
a memory, wherein the node is configured to:
obtain inputs, the inputs comprising: an integrity key, a transfer direction value indicating a transfer direction, and a frame-dependent integrity input, wherein the frame-dependent integrity input is a frame-dependent modulo count value that also depends on a random value and on a frame-specific sequence number;
obtain the message;
use the obtained inputs and the message to generate a message authentication code (MAC) for the message; and
transmit the message and the MAC, wherein the MAC enables a receiver of the message and the MAC to verify the integrity of the message.