Geoscoping for enhancing security in public warning systems

摘要

There are provided measures for geoscoping for enhancing security in public warning systems. Such measures exemplarily comprise retrieving geoscope information being associated with a public key dedicated for verifying signed warning messages of a public warning system, wherein the geoscope information defines a scope of validity of information verifiable by said public key, receiving a signed warning message of the public warning system, verifying a signature of the received signed warning message using said public key, determining whether or not a current location is within the scope defined by the retrieved geoscope information, and accepting the received signed warning message if both the signature of the signed warning message is successfully verified using said public key and the current location is determined to be within the scope defined by the retrieved geoscope information.