Programming Relay Gateway for Bypassing SGM Diagnostic Restrictions
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Solution Overview
Problem
Conventional diagnostic tools for machinery are restricted by Security Gateway Modules (SGMs), limiting their ability to perform comprehensive diagnostics and programming operations due to manufacturer-specific restrictions, necessitating the use of manufacturer-specific tools and permissions.
Innovation Solution
A combination of a programming tool and a transition gateway module is employed to modify messages with SGM-restricted parameters to SGM-authorized parameters, allowing the messages to bypass the SGM, and then restore the original commands using the transition gateway module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional diagnostic tools are used to interface with machine control systems, then standardized communication protocols can be followed, but manufacturer-specific Security Gateway Modules restrict access to diagnostic and programming operations
Solution Approach 1:
The patent introduces a security bypass module as an intermediary device positioned between the diagnostic tool and the Security Gateway Module. This bypass module intercepts restricted diagnostic and programming messages, modifies them to appear authorized, and forwards them to the ECU, thereby mediating the communication block imposed by the SGM and restoring full adaptability without adding permanent system complexity
Solution Approach 2:
The security bypass module dynamically changes message parameters (such as authorization codes, message IDs, or protocol fields) to transform restricted diagnostic and programming messages into authorized-format messages. This parameter transformation allows the messages to pass through the SGM's security checks while maintaining their original diagnostic functionality, resolving the contradiction between versatility and security restrictions
2Reliability
If manufacturer-specific tools and permissions are required to bypass SGM restrictions, then security control is maintained, but device complexity and cost increase
Solution Approach 1:
The security bypass module serves as a universal intermediary that implements security control through standardized message transformation rather than requiring manufacturer-specific tools. It mediates between the diagnostic tool and SGM by applying generalizable authorization techniques, maintaining reliability through controlled access while reducing device complexity by eliminating the need for proprietary tools
Solution Approach 2:
The bypass module is designed with universal functionality to handle multiple manufacturer protocols and message types through a single device. It can transform various restricted messages into authorized formats using standardized techniques, providing broad security control without requiring separate manufacturer-specific tools for each system, thereby reducing overall device complexity
3Adaptability or versatility
If SGMs are disabled to allow unrestricted message flow, then diagnostic access is improved, but system security is compromised
Solution Approach 1:
The security bypass module acts as a security-aware intermediary that maintains diagnostic access while preserving security control. Instead of disabling the SGM, it works through the SGM's security mechanism by transforming messages to appear authorized, thus improving diagnostic versatility without creating security vulnerabilities from complete SGM disablement
Solution Approach 2:
The invention converts the harmful effect of SGM message blocking into a benefit by using the SGM's own authorization mechanism. The bypass module leverages the SGM's security protocol to transform restricted messages into authorized ones, turning the security restriction (harm) into a controlled access pathway (benefit) that maintains both diagnostic access and security
Data Source
AI summary
Embodiments for programming a control system of a machine, such as a vehicle, are provided. Some machines may include security firewalls such as Security Gateway Modules (SGMs) that restrict access to the machine control systems. By utilizing a programming tool and a transition gateway module, embodiments of the present invention may allow unrestricted access to the machine control systems. For example, the programming tool may generate an original message containing an SGM-restricted parameter and then modify it with an SGM-authorized parameter in the header while embedding the restricted parameter in the payload of the message. This modified message bypasses the SGM and reaches the transition gateway module, which restores the original parameter before broadcasting to the electronic control units (ECUs), allowing for more accessible and cost-effective maintenance by bypassing the need for manufacturer-specific tools and permissions.