Validator Component for Reconfigurable Hardware Policy Enforcement
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Solution Overview
Problem
In FPGA-as-a-Service deployments, clients cannot determine the location of Reconfigurable Hardware Devices (RHDs) or the physical protection in place before configuration and data exposure, making it difficult to ensure compliance with geographical and legal restrictions, such as GDPR requirements, and existing solutions are limited in enforcing policies and altering functionality based on evaluations.
Innovation Solution
A system comprising a loader component and a validator component on the RHD that receives configurations and evaluates policies against stored device properties, allowing or disallowing bitstream loading, altering configurations, or disabling regions based on compliance, ensuring that RHDs meet specified requirements before data exposure, including geographical location and physical protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If FPGAs are offered as a service with pay-per-use capabilities, then accessibility and versatility improve, but security control and policy enforcement deteriorate
Solution Approach 1:
The patent introduces a validator component as an intermediary between the configuration loading process and the programmable logic. This validator receives configurations, evaluates them against stored policies, and only allows loading if compliant. The validator acts as a mediator that maintains security control while enabling service accessibility, resolving the contradiction between FaaS versatility and security reliability.
2Adaptability or versatility
If partial reconfiguration is allowed during runtime, then adaptability and functionality improve, but security vulnerability and policy compliance worsen
Solution Approach 1:
The patent implements preliminary action by evaluating configurations against policies before allowing them to be loaded into the FPGA, even during runtime partial reconfiguration. The validator component checks policy compliance in advance, ensuring that only authorized configurations can modify the device state. This prevents security vulnerabilities while maintaining runtime adaptability.
Solution Approach 2:
The system incorporates feedback mechanisms where the validator continuously monitors configuration loading requests and provides feedback by allowing or blocking based on policy evaluation. This feedback loop ensures that runtime reconfiguration operations are constrained by security policies, addressing the vulnerability while preserving adaptability.
3Ease of operation
If configuration loading is unrestricted, then ease of operation and deployment speed improve, but compliance with geographical and legal restrictions deteriorates
Solution Approach 1:
The validator component implements self-service by autonomously evaluating configurations against stored policies and making compliance decisions without external intervention. The system automatically determines whether to allow configuration loading based on policy rules, maintaining ease of operation while ensuring compliance with geographical and legal restrictions through automated policy enforcement.
Data Source
AI summary
Systems and method for enforcing a policy of a configuration and continuously monitoring the policy on a Reconfigurable Hardware Device (RHD) are provided. In some embodiments, the RHD comprises a loader component, a validator component, and at least one region of programmable logic. The loader component is configured to receive a configuration from an external entity. The validator component is configured to obtain a policy, perform an evaluation of the policy based on information about the RHD, and perform one or more actions based on a result of the evaluation of the policy. In this way, some embodiments herein can restrict what properties the RHD must comply with before the configuration is deployed and possibly sensitive data is exposed. Further, by adopting some embodiments, the RHD can be used to quickly change behavior of a vehicle when encountering a new location or environmental condition.