Wireless Sensor System Security is Essential

Security is Mandatory in Bluetooth Mesh Networks

PHANTOM® features Unparalleled Security Features

By offloading decryption, encryption, and authentication works to our CryptoCell-310, PHANTOM® can deliver high performance in Bluetooth mesh networks.

Mesh Network, Individual Applications, and Bluetooth 5.0 Devices Are All Secure

This Cannot Be Switched Off or Reduced in Any Way

• All mesh messages are encrypted and authenticated.
• Network security, application security, and device security are addressed independently.
• Security keys can be changed during the life of the mesh network via a key refresh procedure.
• Message obfuscation makes it difficult to track messages sent within the network providing a privacy mechanism to make it difficult to track nodes.
• Mesh security protects the network against replay attacks.
• The process by which devices are added to the mesh network to become nodes, is itself a secure process.
• Nodes can be removed from network securely, in a way which prevents trash can attacks.

Three Security Keys Provide Security to Different Aspects of the Mesh and Achieve a Critical Capability in Mesh Security, that of “Separation of Concerns”

• NetKey (network key) possessed by all nodes. It allows a node to decrypt and authenticate up to the Network Layer. A relay node uses NetKey to decrypt and authenticate messages before relaying.
• AppKey (application key). Application data for specific application can only be decrypted by nodes that possess the right AppKey.
• DevKey (device key) is unique to each node. It is used for secure communication with the provisioner during provisioning process.

In a mesh network with many nodes, a lot of processing power is required for decryption and authentication at least for the relay nodes and possibly for other nodes. PHANTOM® is embedded with an ARM CryptoCell-310 cryptographic co-processor. To achieve acceptable mesh network performance, PHANTOM® should be used in mesh networks with many nodes.

CryptoCell-310 provides the following key features:

• Cryptographic hardware engines, providing CPU host offloading, operation, acceleration and power consumption reduction.
• Cryptography and security middleware services
• Platform security building blocks libraries
• Device life-cycle-state management
• Key management infrastructure
• Secure boot.

By offloading decryption, encryption, and authentication works to CryptoCell-310, PHANTOM® can deliver the highest performing security of all Bluetooth mesh wireless sensor networks.