xLaw: Attorney-Client Privilege AI Protection

The Problem

Law firms are adopting AI for document review, contract analysis, and legal research, but sending privileged communications to AI providers waives attorney-client privilege.

Attorney-client privilege is the cornerstone of legal practice, but it can be inadvertently waived by sharing privileged material with third parties — including cloud AI providers. Courts have held that privilege may be waived when privileged content is processed by external services.

Legal hold requirements compound the problem: firms must preserve communications for litigation but also protect them from unauthorized access during lengthy hold periods.

The Old Way

The PRIVATE.ME Solution

xLaw enables AI-assisted legal workflows without privilege waiver. xRedact strips identifying information, XorIDA splits the content so no single AI provider sees a complete document, and HMAC chains maintain legal hold integrity.

Privileged documents pass through xRedact’s 4-layer PII pipeline, then are XorIDA-split for AI processing. No single AI provider sees enough content to understand the privileged communication. Results are reconstructed locally.

Legal holds are enforced via HMAC-chained custody logs. Every access, hold, and release event is DID-signed and tamper-evident. The chain of custody is court-admissible.

The New Way

How It Works

xLaw chains xRedact (privilege-aware PII stripping), XorIDA (split-channel AI processing), and HMAC-chained custody (legal hold integrity) into a single compliance layer.

Use Cases

Integration

import { PrivilegeGuard } from '@private.me/legalsplit';

const guard = await PrivilegeGuard.create({
  matterDid: matterDid,
  redactLevels: ['L1', 'L2', 'L3'],
  aiProviders: [providerA, providerB, providerC]
});
const analysis = await guard.analyzeDocument(doc);

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 xLaw?

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

Ship Proofs, Not Source

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

Use Cases