Security Assurance Framework for Open RAN Certificate Validation
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Solution Overview
Problem
The lack of standardized practices and a common trust chain across multiple vendors in Open RAN systems leads to CA fragmentation, inconsistent security measures, and complexity, hindering interoperability and network security in 5G networks.
Innovation Solution
A cloud-based security assurance framework that includes a certificate repository, analytics engine, and reporting engine to analyze and validate digital certificates from disparate sources, providing a comprehensive solution for proactive testing and validation of certificates and trust chains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple vendors issue certificates in Open RAN systems, then vendor diversity and innovation are promoted, but CA fragmentation and trust chain inconsistencies occur
Solution Approach 1:
The patent introduces a Root of Trust (RoT) as an intermediary entity that mediates between multiple Certificate Authorities (CAs) and the network elements. The RoT issues certificates to CAs, creating a hierarchical trust structure where all CAs are bound to the same RoT. This mediator enables multiple vendors to issue certificates independently while maintaining consistent trust chains through the common RoT anchor.
Solution Approach 2:
The patent segments the trust architecture into distinct hierarchical levels: Root of Trust (RoT) at the top, followed by Certificate Authorities (CAs), and then network elements. This segmentation allows independent operation at each level while maintaining overall trust consistency. The RoT is separated from individual CAs, enabling multi-vendor participation without compromising the unified trust chain.
2Adaptability or versatility
If certificate validation is performed across multiple vendors, then interoperability is improved, but system complexity increases
Solution Approach 1:
The patent creates a universal trust framework where a single Root of Trust (RoT) serves all Certificate Authorities and network elements across different vendors. The RoT performs multiple functions: issuing certificates to CAs, validating certificate chains, and providing a common trust anchor. This universal approach enables interoperability without requiring complex vendor-specific validation logic at each node.
Solution Approach 2:
The RoT acts as an intermediary that simplifies trust management by centralizing the root of trust validation. Instead of each node needing to validate complex multi-vendor certificate chains independently, the RoT mediates by providing pre-validated certificates to CAs, reducing the computational and operational complexity at network elements while maintaining interoperability.
3Adaptability or versatility
If security measures are customized per vendor, then security adaptability is improved, but consistency and standardization deteriorate
Solution Approach 1:
The patent applies local quality by allowing each Certificate Authority (CA) to have customized security policies and certificate issuance criteria suitable for their specific vendor requirements and risk profiles. Each CA can adapt their security measures locally while still being bound to the common Root of Trust (RoT). This enables security adaptability at the CA level while maintaining overall system consistency through the unified RoT framework.
Solution Approach 2:
The patent segments security management into two layers: a common upper layer with the Root of Trust (RoT) that ensures consistency and standardization, and a lower layer with individual CAs that can implement customized security measures. This segmentation allows each CA to have local security adaptability while the RoT layer maintains global security consistency through standardized certificate validation rules.
Data Source
AI summary
A method and apparatus for analyzing disparate certificates possibly issued by disparate sources within a disaggregated public key infrastructure is disclosed. In one embodiment, the system comprises a database having a certificate repository and a certificate ingestion interface module, communicatively coupled to the certificate repository, the certificate ingestion interface module for ingesting certificates issued by the disparate sources. The system further comprises an analytics engine, communicatively coupled to the certificate repository, for analyzing attributes of the ingested certificates, a reporting engine, communicatively coupled to the certificate repository, for visualizing and reporting results of the analytics engine via a reporting interface, and an administrative interface, communicatively coupled to the certificate repository, for managing the system.