Patent ID: 11936643
Assignee: NAGRAVISION SàRL
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A method of receiving a message, the method comprising:
combining each message of a plurality of messages with an authentication key to compute, for each message of the plurality of messages, a respective message tag of a plurality of message tags for validating one or more message tags associated with one or more future received messages;
storing the plurality of messages and the plurality of message tags in a memory;
receiving a message tag from a message sending device without a corresponding message;
validating the received message tag based on comparing the received message tag with the stored plurality of message tags to identify a matching message tag;
in response to a trigger event, updating the authentication key for computing one or more updated message tags;
combining each message of the plurality of messages with the updated authentication key to compute a plurality of updated message tags; and
storing the plurality of updated message tags in the memory.