Sensitive legal evidence — texts, photos, recordings, documents — is stored insecurely. Parents in custody cases keep screenshots on their phones. Domestic violence survivors email evidence to themselves. Attorneys share files through unencrypted cloud storage. Chain-of-custody is broken the moment evidence leaves the device. Sharing with courts or attorneys is ad-hoc, unverifiable, and inadmissible.
End-to-end encrypted evidence storage with chain-of-custody tracking, access audit logs, and secure sharing with courts and attorneys. Every piece of evidence is encrypted client-side before upload, timestamped with tamper-evident hashes, and tracked through every access event.
graph LR
EU[Evidence Upload] --> CSE[Client-Side Encryption<br/>AES-256-GCM]
CSE --> ES[Encrypted Storage<br/>S3/equivalent]
ES --> AC[Access Control<br/>Role-Based + Case-Linked]
AC --> COC[Chain-of-Custody<br/>Logger]
COC --> SS[Secure Share<br/>Time-Limited Links<br/>+ Watermarking]
SS --> CE[Court Export<br/>Tamper-Evident Package]
- Parents in custody cases — securely preserve text messages, photos, and communications as evidence
- Domestic violence survivors — safely store evidence without risk of abuser access
- Attorneys — receive and manage evidence with verifiable chain-of-custody
- Guardians ad litem — access case evidence through controlled, audited channels
- Court evidence officers — receive tamper-evident evidence packages ready for proceedings
- End-to-end encryption (AES-256-GCM) — evidence encrypted on the client before upload; server never sees plaintext
- Chain-of-custody tracking — every access, transfer, and modification logged with cryptographic timestamps
- Tamper-evident timestamps — hash-chain verification proves evidence has not been altered since upload
- Role-based access control — permissions tied to case roles (attorney, judge, guardian, party)
- Secure sharing with time-limited links — share evidence with expiring, watermarked links
- Court-ready evidence packages — export tamper-evident bundles with custody logs for court proceedings
- Complete access audit trail — who accessed what, when, from where, and what they did with it
npm install @justice-os/evidence-vaultimport { Encryptor, VaultStore, SecureShare } from '@justice-os/evidence-vault';
// Upload evidence with client-side encryption
const encryptor = new Encryptor();
const vault = new VaultStore({ region: 'us-east-1', bucket: 'evidence' });
const key = await encryptor.generateKey();
const encrypted = await encryptor.encrypt(fileBuffer, key);
const item = await vault.store({
caseId: 'case-2024-1234',
type: 'text-message',
data: encrypted.ciphertext,
metadata: {
iv: encrypted.iv,
timestamp: new Date().toISOString(),
hash: encrypted.hash,
description: 'Text messages from Jan 2024',
},
});
// Share securely with attorney
const share = new SecureShare();
const link = await share.createLink({
itemId: item.id,
recipientEmail: 'attorney@lawfirm.com',
expiresIn: '48h',
watermark: true,
accessLevel: 'view',
});src/
├── index.ts
├── encryption/
│ ├── encryptor.ts # Encryptor — AES-256-GCM client-side
│ ├── key-manager.ts # KeyManager — key derivation, rotation
│ └── integrity.ts # IntegrityChecker — hash verification
├── storage/
│ ├── vault-store.ts # VaultStore — encrypted CRUD
│ ├── metadata-store.ts # MetadataStore — searchable metadata
│ └── retention.ts # RetentionPolicy — auto-deletion rules
├── custody/
│ ├── chain-tracker.ts # ChainOfCustody — every access logged
│ └── tamper-detector.ts # TamperDetector — integrity validation
├── sharing/
│ ├── secure-share.ts # SecureShare — time-limited links
│ ├── watermarker.ts # Watermarker — invisible watermarks
│ └── court-export.ts # CourtExport — tamper-evident packages
├── access/
│ ├── access-control.ts # AccessControl — role + case based
│ └── audit-logger.ts # AuditLogger — all access events
└── types/
└── index.ts
- Zero-knowledge proof of evidence existence without revealing contents
- Mobile app for on-device evidence capture with automatic encryption
- Integration with court e-filing systems for direct submission
- Multi-party key sharing for collaborative case access
- Automated retention policy enforcement with legal hold support
- Blockchain-anchored timestamps for independent verification
This repository is part of the Justice OS open-source ecosystem — 32 interconnected projects building the infrastructure for accessible justice technology.
| Repository | Description |
|---|---|
| justice-os | Core modular platform — the foundation |
| justice-api-gateway | Interoperability layer for courts |
| legal-identity-layer | Universal legal identity and auth |
| case-continuity-engine | Never lose case history across systems |
| offline-justice-sync | Works without internet — local-first sync |
| Repository | Description |
|---|---|
| justice-navigator | Google Maps for legal problems |
| mobile-court-access | Mobile-first court access kit |
| cognitive-load-ui | Design system for stressed users |
| multilingual-justice | Real-time legal translation |
| voice-legal-interface | Justice without reading or typing |
| legal-plain-language | Turn legalese into human language |
| Repository | Description |
|---|---|
| vetted-legal-ai | RAG engine with citation validation |
| justice-knowledge-graph | Open data layer for laws and procedures |
| legal-ai-guardrails | AI safety SDK for justice use |
| emotional-intelligence-ai | Reduce conflict, improve outcomes |
| ai-reasoning-engine | Show your work for AI decisions |
| Repository | Description |
|---|---|
| evidence-vault | Privacy-first secure evidence storage |
| court-notification-engine | Smart deadline and hearing alerts |
| justice-analytics | Bias detection and disparity dashboards |
| evidence-timeline | Evidence timeline builder |
| Repository | Description |
|---|---|
| court-doc-engine | TurboTax for legal filings |
| justice-workflow-engine | Zapier for legal processes |
| pro-se-toolkit | Self-represented litigant tools |
| justice-score-engine | Access-to-justice measurement |
| justice-app-generator | No-code builder for justice tools |
| Repository | Description |
|---|---|
| justice-persona-simulator | Test products against real human realities |
| justice-experiment-lab | A/B testing for justice outcomes |
| Repository | Description |
|---|---|
| digital-literacy-sim | Digital literacy simulator |
| legal-resource-discovery | Find the right help instantly |
| court-simulation-sandbox | Practice before the real thing |
| justice-components | Reusable component library |
| justice-dev-starter-kit | Ultimate boilerplate for justice tech builders |
Built with purpose. Open by design. Justice for all.
This project is provided for informational and educational purposes only and does not constitute legal advice, legal representation, or an attorney-client relationship. No warranty is made regarding accuracy, completeness, or fitness for any particular legal matter. Always consult a licensed attorney in your jurisdiction before making legal decisions. Use of this software does not create any professional-client relationship.
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