Message processing device, map management device, map company device and car company device

摘要

The receiving unit (129R) receives the distribution message. The extraction unit (121) extracts target data to be processed from the distribution message. The processing unit (124) generates processing data by processing the target data. The signature unit (125) generates a signature for set data including target data and processing data. The message generator (126) generates a processing message including the set data and the signature for the set data. The distribution unit (129S) distributes the processed message.