Secure Peering via Trusted Module Control
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Solution Overview
Problem
Existing methods for initializing cryptographic protocols require physical peering in a secure location, which is costly and logistically challenging, necessitating a method to perform key peering without prior physical peering in a secure location to reduce costs and enhance user experience.
Innovation Solution
A method involving a trusted module on one device taking control of communication means and the human-machine interface to establish a temporary secure communication channel for key exchange between devices over an unsecure channel, with user authentication and acceptance, allowing peering without physical proximity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical peering is performed in a secure location, then security of key distribution is improved, but hardware and logistical constraints increase
Solution Approach 1:
The patent replaces the mechanical/physical system of secure location peering with a cryptographic system. Instead of physically transporting devices to secure locations, the invention uses cryptographic protocols (Diffie-Hellman key exchange, digital signatures) to establish secure communication channels over unsecure networks, thereby eliminating the need for physical secure locations while maintaining security guarantees
Solution Approach 2:
The patent introduces cryptographic protocols as intermediaries between devices. Rather than requiring direct physical contact in secure locations, cryptographic protocols mediate the key distribution process by enabling secure key exchange over unsecure channels through mathematical transformations and verification mechanisms
2Reliability
If physical peering in secure location is used, then key distribution security is ensured, but costs increase
Solution Approach 1:
The patent substitutes expensive physical secure infrastructure with computational cryptographic mechanisms. Instead of maintaining physical secure locations and security personnel, the system uses cryptographic algorithms that can be implemented in software or hardware modules, dramatically reducing operational and infrastructure costs while maintaining security
Solution Approach 2:
The patent employs ephemeral cryptographic keys and temporary session keys that are generated, used, and discarded. These short-lived cryptographic objects replace expensive long-term physical security infrastructure, providing security through mathematical complexity rather than physical permanence
3Reliability
If physical peering is required, then secure key establishment is achieved, but user experience deteriorates
Solution Approach 1:
The patent replaces the cumbersome mechanical process of physical peering with automated cryptographic protocols. Users simply need to initiate connection requests through normal communication channels, and the cryptographic system automatically establishes secure key exchange without requiring physical proximity or special procedures
4Device complexity
If unsecure communication channel is used, then logistical constraints are reduced, but security during key exchange is compromised
Solution Approach 1:
The patent converts the apparent harm of using unsecure channels into a benefit by demonstrating that cryptographic protocols can provide security even when channels are compromised. The Diffie-Hellman protocol specifically addresses this by enabling key exchange where the security does not depend on channel secrecy but on mathematical problem hardness
Solution Approach 2:
The patent substitutes physical security mechanisms with cryptographic security mechanisms that are independent of communication channel security. Instead of relying on physical control of channels, the system uses mathematical transformations that guarantee security regardless of channel conditions
Data Source
AI summary
Some embodiments are directed to a method for peering between first and second modules each installed in a different device, the device of the first module includes a human-machine interface, and the two devices can be linked by an unsecure communication channel. The method can include: receiving via the human-machine interface a command setting the device of the first module in operating mode so the first module takes control of a part of the communication means of the first device in order to set them in a secure operating mode and takes control of the human-machine interface; establishing a temporarily secure communication between first and second modules; displaying on the human-machine interface a status signaling the set-up of the secure communication; receiving via the human-machine interface a peering acceptance command; and exchanging of keys/secrets between the modules through the temporarily secure communication channel to perform the peering.