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title SINT Security, Privacy & Confidentiality
description 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

  1. Confidentiality – Encryption at rest, in transit, and in use.
  2. Integrity – Signed, attested, verified code only.
  3. Verifiability – ProofReceipt logs every inference & training step.
  4. User Sovereignty – ConsentPass revocation instantly halts data access.
  5. 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

  1. ConsentPass panic burn executed (user or admin).
  2. t-of-n validator threshold triggers shard destruction.
  3. Runtime enclave halts due to attestation mismatch.
  4. Walrus blobs remain ciphertext-only.
  5. Full RCA and public post-mortem within 24 hours.
  6. 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

POST /v1/inference
X-SINT-Proof: 0x7a2e...
X-SINT-Blob: walrus://bafybeih...
Body: { "prompt": "..." }
  • 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.