Mesh network for resource-constrained devices

A system for secure internet-of-things communications, the system comprising:

• a management system;
• a trusted third party system in communication with the management system;
• a mesh network including a plurality of resource-constrained devices, each of the plurality of resource-constrained devices being a sensor, an actuator, or a sensor/actuator, wherein the plurality of resource-constrained devices include a root node in communication with the trusted third party via a network, wherein each of the plurality of resource-constrained devices is directly or indirectly in communication with the root node, and wherein the root node is one of the plurality of resource-constrained devices;
• and
• a key generator in communication with the trusted third party system and each of the plurality of resource-constrained devices, the key generator configured to generate a public key, a private key, and a decryption key, wherein the private key is stored within a memory of the key generator, wherein the public key is shared with the trusted third party system and each sensor and sensor/actuator of the resource-constrained devices, and wherein the decryption key is shared with the trusted third party system and each actuator and sensor/actuator of the resource-constrained devices,
• wherein data is encrypted and decrypted between the trusted third party system and the plurality of resource-constrained devices in the mesh network via a key policy attribute-based encryption scheme integrated with the mesh network.