Overview
SINT Security, Privacy & Confidentiality
Purpose – A deeply detailed, auditable, and technically rigorous blueprint for how SINT achieves end-to-end privacy, security, and confidential AI execution. Designed for engineers, CISOs, compliance leaders, and ecosystem partners seeking provable trust.
0 Glossary & Core Concepts
| Acronym | Meaning |
|---|---|
| CVM | Confidential Virtual Machine (Intel TDX / AMD SEV / NVIDIA CCTEE) |
| MCP | Model‑Context Protocol — SINT’s agent runtime interface |
| ZT‑HTTPS | Zero‑Trust HTTPS with remote attestation and mTLS |
| ConsentPass | Revocable, NFT-based, user-controlled data and key access token |
| ProofReceipt | On‑chain attestation that binds input, model, output, and security policy |
| SINT Bridge | Framework for connecting Web2 APIs, Web3 chains, and confidential compute securely |
| Walrus / Seal / Nautilus | Sui primitives for secure storage, policy gating, and TEE attestation |
1 Threat Model
1.1 Asset Categories
- Personal Data – User memory vaults, documents, sensor data, wallet keys, and contextual metadata.
- Model Intellectual Property – Proprietary model weights, prompt chains, and fine-tuned behaviors.
- Financial Credentials – Keys and tokens used by autonomous agents for DeFi, payments, and trading.
- Operational States – Logs, orchestration flows, and runtime ephemeral data.
1.2 Threat Vectors
| Category | Example Attack |
|---|---|
| Insider threats | Cloud provider admin reading live memory |
| External attackers | API key theft, container escape, GPU side-channel attack |
| Regulatory & legal | Court orders forcing plaintext data delivery |
| Malicious skills | Marketplace agents exfiltrating user data |
| Supply chain | Compromised dependencies, malicious container images |
| Quantum precomputation | Future risk to legacy cryptographic algorithms |
1.3 Security Goals
- Confidentiality – Encryption at rest, in transit, and in use.
- Integrity – Signed, attested, verified code only.
- Verifiability – ProofReceipt logs every inference & training step.
- User Sovereignty – ConsentPass revocation instantly halts data access.
- Regulatory Alignment – Controls mapped to SOC2, ISO 27001, HIPAA, GDPR.
2 Data Lifecycle & Architecture
User → Edge Encryption → Walrus Immutable Storage → Nautilus CVM Runtime → ProofReceipt → Encrypted Output → User Client| Stage | Security Controls | Key Management |
|---|---|---|
| Edge encryption | AES-256-GCM on device | TPM-backed device keys + ConsentPass |
| Storage | Walrus versioned blobs | Shamir-split vault keys (t-of-n validators) |
| Runtime execution | Nautilus-attested CVMs (Intel TDX, AMD SEV, NVIDIA CCTEE) | Ephemeral enclave keys |
| Transport | ZT-HTTPS + mutual attestation | Ephemeral TLS session keys |
| Output | End-to-end encrypted data return | User-only decrypt keys |
3 Core Security Components
3.1 CVM Mesh & Attestation
- Multi-cloud CVM clusters with verified code and ephemeral workloads.
- Attestation artifacts committed to chain for public verification.
- GPU partitioning (MIG/IOMMU) preventing data leakage.
3.2 Selective Disclosure Engine
- Policy-as-code DSL compiled to Move bytecode.
- Automatic redaction & consent validation before external calls.
- Zero data egress without explicit ProofReceipt authorization.
3.3 Secure Marketplace Sandbox
- All skills run in isolated microVMs with seccomp-filtered syscalls.
- Pre-deployment scanning with Semgrep, Trivy, and AI code analyzers.
- Dynamic runtime monitoring using eBPF for anomaly detection.
3.4 ConsentPass Control Layer
- NFT-gated, revocable data access.
- Revocation triggers immediate key shred and CVM halt.
- User-centric multi-tenant policies with fine-grained scope.
4 Cryptographic Foundation
| Layer | Algorithm | Application |
|---|---|---|
| Edge | AES-256-GCM | Device-level encryption |
| Key split | Shamir’s Secret Sharing t=3, n=5 | Validator-managed custody |
| Attestation | Ed25519 + BLAKE3 Merkle root | ProofReceipt chain anchoring |
| Audit | Immutable BLAKE3 logs | Hourly commit to Sui ledger |
| IP watermarking | ChaCha20-Poly1305 | Protect model outputs & weights |
| Future ready | Kyber (post-quantum) pilot in roadmap |
5 Compliance & Governance
- Controls mapped to SOC2 Type II, ISO 27001, HIPAA, and GDPR.
- Privacy impact assessments run quarterly.
- AI agent behavior sandbox logs for AI Act readiness (EU 2026).
6 Incident Response & Revocation Workflow
- ConsentPass panic burn executed (user or admin).
- t-of-n validator threshold triggers shard destruction.
- Runtime enclave halts due to attestation mismatch.
- Walrus blobs remain ciphertext-only.
- Full RCA and public post-mortem within 24 hours.
- Incident feed shared via verifiable webhook to affected partners.
7 Deployment Models
SaaS Cloud
- Multi-region clusters (US, EU, APAC) on Sapphire Rapids CPUs & H100 GPUs.
- Infrastructure-as-code pinned base images.
- Auto-attestation for ephemeral job execution.
Enterprise Self-Host
- Helm charts with integrated key custody.
- On-prem ConsentPass for data & runtime isolation.
- Air-gapped mode for critical industries (finance, healthcare).
8 Security Roadmap
| Quarter | Milestone |
|---|---|
| Q3 2025 | MCP runtime sandbox verification |
| Q4 2025 | SOC2 Type I audit + public bug bounty |
| Q1 2026 | Differential privacy + synthetic data tooling |
| Q2 2026 | FIPS 140-3 certified modules + secure GPU enclave support |
| Q4 2026 | Homomorphic inference pilot |
9 API Security Flow Example
- Gateway validates ProofReceipt and attestation before routing.
Key Takeaways
- Confidential by default – Encryption in transit, rest, and in-use enclaves.
- Provable trust – Attestation + ProofReceipt on every action.
- User sovereignty – Complete data ownership and instant revocation.
- Regulator-ready – Compliance-first architecture with audit hooks.
- Innovation-safe – Enables Jarvis-class AI agents without trust compromise.