Distributed Remote Attestation for Mobile IoT Networks
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Solution Overview
Problem
Existing remote attestation methods for IoT devices are inefficient in large-scale networks with limited resources and mobility, leading to high communication loads and inability to perform real-time monitoring due to reliance on centralized communication and the need for accurate device state information.
Innovation Solution
Each node performs self-remote attestation and monitors attestation results using a Bloom filter and consensus protocols, allowing for efficient data structure collection and network state estimation without requiring accurate device state information, reducing communication load and enabling mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centralized communication is used for remote attestation in IoT networks, then verification of device integrity can be performed, but communication load increases and real-time monitoring becomes difficult in large-scale networks
Solution Approach 1:
The patent divides the centralized verification process into distributed peer-to-peer verification among nodes. Each node performs self-remote attestation and shares results with neighbors, eliminating the need for a central verifier and reducing communication overhead by localizing verification tasks.
Solution Approach 2:
Each node performs self-remote attestation independently, generating and verifying its own attestation results. This self-service approach eliminates dependency on centralized verification infrastructure, reducing communication load while maintaining verification reliability.
2Loss of information
If accurate device state information is collected from all nodes, then comprehensive network monitoring is achieved, but communication overhead and processing requirements increase significantly
Solution Approach 1:
The patent applies local quality by having each node maintain and share only locally relevant attestation information with its immediate neighbors rather than collecting comprehensive global state data. This localized information sharing reduces communication overhead while providing sufficient monitoring coverage through distributed consensus.
3Reliability
If traditional remote attestation protocols are used, then device integrity can be verified, but the system cannot efficiently handle device mobility and dynamic network topology changes
Solution Approach 1:
The patent implements dynamic verification by allowing nodes to perform self-remote attestation and share results with neighboring nodes in real-time. This dynamic peer-to-peer verification mechanism adapts to topology changes and device mobility without requiring centralized coordination, maintaining verification reliability while supporting network dynamics.
Data Source
AI summary
Provided are an apparatus and method for performing remote attestation by taking into account mobility. The method includes obtaining, by each node constituting a network, a remote attestation result value by performing self-remote attestation, obtaining, by each of the nodes, remote attestation result values from the other nodes by broadcasting the obtained remote attestation result value to at least one neighboring node, and monitoring, by each of the nodes, remote attestation of each of the nodes on the basis of the obtained remote attestation result values of the nodes.