SYSTEMS AND METHODS FOR PROTECTING CELLULAR NETWORK MESSAGES

Abstract: a client-side electronic device includes a receiver, a processor, and a memory. the receiver communicates with a message server over a communication medium of a communication network. the memory stores computer-executable instructions, which, when executed by the processor, cause the device to receive, from the message server, a broadcast message, a timestamp associated with the broadcast message, and a first digital signature of the broadcast message and a second digital signature of the timestamp. the executed instruction further cause the device to verify an integrity of the broadcast message based the first or second digital signatures, determine a freshness of the broadcast message based on the received timestamp, calculate a trust state of the broadcast message based on the integrity verification and the freshness determination, and store the broadcast message in the memory along with the calculated trust state.

Inventor(s): TAO WAN

CPC Classification: H04W12/106 (Packet or message integrity)

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