Secure aggregation of IoT messages

A system for using hash signatures to validate data in a network, the system comprising:

• processing circuitry;
• and
• a memory device including instructions embodied thereon, wherein the instructions, which when executed by the processing circuitry, configure the processing circuitry to perform operations comprising:
• accessing input data, at an aggregator node, the input data including data received from a plurality of remote sensor nodes, each data having a respective signature corresponding to each of the plurality of remote sensor nodes;
• validating the data by using respective cryptographic hash functions on the data to obtain a respective result and evaluating the respective result using the respective signature;
• accessing sensed data, the sensed data obtained locally by the aggregator node;
• signing the sensed data using a signature of the aggregator node;
• aggregating the input data and the sensed data to produce aggregate data;
• executing a cryptographic hash function on the aggregate data to produce a hash value;
• bundling the input data, the sensed data, respective signatures of the input data and the sensed data, the aggregate data, and the hash value for the aggregate data in a data structure;
• and
• publishing the data structure to subscriber nodes on the network.