xAntenna: Open RAN Security

The Problem

Open RAN disaggregates the radio access network across multiple vendors, but this creates new attack surfaces at the interfaces between vendor components.

The O-DU/O-CU interface carries sensitive control plane signaling including subscriber identity, handover data, and resource allocation. Each vendor component has full visibility into the traffic it processes.

Nation-state actors target supply chain vulnerabilities in RAN equipment. With Open RAN, the attack surface expands from one vendor to many, each with potential backdoors.

The Old Way

The PRIVATE.ME Solution

xAntenna splits control plane data via XorIDA at the O-DU/O-CU boundary. Each vendor component receives one share — enough to perform its function but not enough to reconstruct complete signaling.

Control plane messages are XorIDA-split before crossing vendor boundaries. xLink M2M provides DID-authenticated communication between components. xBoot ensures firmware integrity on each component.

Even if one vendor component is compromised, the attacker gets zero usable information. Reconstruction requires cooperation of multiple independent vendor components.

The New Way

How It Works

xAntenna combines XorIDA split-plane with xLink M2M authentication, xBoot firmware integrity, and threshold reconstruction across vendor components.

Use Cases

Integration

import { RANGuard } from '@private.me/xantenna';

const guard = await RANGuard.create({
  components: [odu_did, ocu_did, ric_did],
  threshold: { k: 2, n: 3 }
});

Security Properties

Verifiable Data Protection

Every operation in this ACI produces a verifiable audit trail via xProve. HMAC-chained integrity proofs let auditors confirm that data was split, stored, and reconstructed correctly — without accessing the data itself.

Ready to deploy xAntenna?

Talk to Ren, our AI sales engineer, or book a live demo with our team.

Ship Proofs, Not Source

xAntenna generates cryptographic proofs of correct execution without exposing proprietary algorithms. Verify integrity using zero-knowledge proofs — no source code required.

Use Cases