Towards a Zero-Trust Supply-Chain Assurance Rubric for ORAN RIC Applications
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arXiv
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866911650160836608 |
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| author | Chiu, Chun Yin |
| author_facet | Chiu, Chun Yin |
| contents | Open RAN enables third-party xApps and rApps to be onboarded and updated at operational cadence, creating a software supply chain that spans developers, CI systems, registries, onboarding pipelines, and runtime enforcement points. This preprint proposes a zero-trust supply-chain assurance rubric for O-RAN RIC applications. It makes three contributions: first, an app-centric lifecycle threat model for RIC applications across build, signing, publication, onboarding, runtime, and update or rollback stages; second, a WG11-aligned threat-control-evidence mapping that relates lifecycle threats to O-RAN security baselines and complementary supply-chain evidence; and third, an operator-facing assurance profile that combines secure software development practices, SBOM transparency, and SLSA-style provenance into incremental onboarding levels. Analytical case-study walkthroughs and a minimal evidence-checking workflow illustrate how the rubric can support explicit Accept, Escalate, or Block decisions during RIC app onboarding. The evaluation is intended to assess applicability rather than deployment-scale performance; empirical measurements of operational overhead, decision consistency, and detection coverage are left for future work. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_04249 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Towards a Zero-Trust Supply-Chain Assurance Rubric for ORAN RIC Applications Chiu, Chun Yin Cryptography and Security Networking and Internet Architecture Open RAN enables third-party xApps and rApps to be onboarded and updated at operational cadence, creating a software supply chain that spans developers, CI systems, registries, onboarding pipelines, and runtime enforcement points. This preprint proposes a zero-trust supply-chain assurance rubric for O-RAN RIC applications. It makes three contributions: first, an app-centric lifecycle threat model for RIC applications across build, signing, publication, onboarding, runtime, and update or rollback stages; second, a WG11-aligned threat-control-evidence mapping that relates lifecycle threats to O-RAN security baselines and complementary supply-chain evidence; and third, an operator-facing assurance profile that combines secure software development practices, SBOM transparency, and SLSA-style provenance into incremental onboarding levels. Analytical case-study walkthroughs and a minimal evidence-checking workflow illustrate how the rubric can support explicit Accept, Escalate, or Block decisions during RIC app onboarding. The evaluation is intended to assess applicability rather than deployment-scale performance; empirical measurements of operational overhead, decision consistency, and detection coverage are left for future work. |
| title | Towards a Zero-Trust Supply-Chain Assurance Rubric for ORAN RIC Applications |
| topic | Cryptography and Security Networking and Internet Architecture |
| url | https://arxiv.org/abs/2605.04249 |