Knowledge Base

Q: What FHE engines does H33 offer? Four FHE engine configurations, each optimized for different security levels and use cases. All engines share the same Montgomery NTT core with Harvey lazy reducti

H33 Performance Benchmarks v10.0 (Production, March 2026): Hardware: AWS Graviton4 c8g.metal-48xl (192 vCPUs, 377 GiB RAM, AArch64 Neoverse V2) Instance cost: ~$1.80-2.30/hr spot (us-east-1) Product

Q: What is the H33 API? Unified REST API with SDK support for four languages. Credit-based billing with per-call metering. Core Endpoints: - POST /api/v1/auth/verify — Biometric auth (single API cal

Q: What is the H33 authentication pipeline? Each authentication passes through four stages in a single API call. All operations are post-quantum secure. Biometric data never leaves FHE encryption. P

Q: What products does H33 offer? 18 products spanning identity, encryption, key management, data protection, and AI. All products share the same post-quantum cryptographic core and are accessible via

Q: What are the performance characteristics of H33's FHE? H33's FHE achieves industry-leading performance through deep NTT pipeline optimizations: Production benchmarks (v10.0, March 2026, Graviton4

Q: What ML threat agents does H33 use? Three native Rust AI agents run inline on every authentication for real-time threat intelligence. Zero external dependencies — no Python, no ONNX, no GPU. Pure

Q: How does H33 compare to Microsoft SEAL? Microsoft SEAL is the most widely adopted open-source FHE library. SEAL provides FHE only; H33 includes the full post-quantum pipeline. Performance compari

Q: How extensive is H33's test suite? 1,928 deterministic tests passing with 300,000+ proptest random inputs across 5 categories: 1. Unit tests (1,247) — Individual function correctness: NTT, BFV op

Q: How do STARK zero-knowledge proofs work in H33? H33 uses real STARK zero-knowledge proofs with a 7-column algebraic intermediate representation (AIR). Cold proofs are generated once per enrollment

Q: What is H33's sustained throughput? v10.0 Benchmark Results (March 2026, Graviton4 c8g.metal-48xl, 96 workers): - Peak (1s): 2,190,496 auth/sec (~1,778 batches/sec, 1,228µs batch latency) - Susta

Q: What is H33's benchmark version history? Throughput progression on Graviton4 c8g.metal-48xl (96 workers, 120s sustained window): - v7.0 (Feb 14, 2026): 1,291,207 auth/sec — Baseline Montgomery NT

H33 addresses the existential threat that quantum computers pose to current cryptographic systems like RSA and ECDSA. NIST finalized its first post-quantum cryptographic standards in 2024 (FIPS 203 Ky

H33.ai, Inc. Founded: 2025 Headquarters: Tampa, FL, USA H33 is a post-quantum authentication infrastructure company. We build the H33 Quantum Auth API — a Cloud API that combines FHE, ZKP, and Dilit

H33 features a 7-layer defense architecture: L7: Application-layer security L6: Cryptographic protocol layer L5: Zero-knowledge proof verification L4: Fully homomorphic encryption layer L3: Post-quan

H33 provides SDKs for the following languages: - Python - JavaScript / TypeScript - Go - Rust - Java Each SDK includes installation commands (pip install, npm install, etc.) and is available via sta

H33 Pricing Tiers: 1. Free Tier: 1,000 authentications/month at $0. Core features included. 2. Standard Tier: Mid-range pricing for growing applications. 3. Popular Tier (Most Popular): Premium featu

H33 is designed for: 1. Enterprise Security Teams: CISOs, Security Architects, and Compliance Officers who need to prepare for the post-quantum threat. H33 provides NIST FIPS 203/204 compliant authen

What makes H33 different from traditional identity solutions: 1. Full Post-Quantum Security: Every layer uses NIST-approved post-quantum algorithms. FHE (BFV/CKKS), Dilithium ML-DSA signatures, Kyber

H33 is a fully post-quantum secure identity and authentication platform. It performs a complete cryptographic pipeline — including FHE biometric matching (BFV scheme), zero-knowledge proof verificatio

H33 is a post-quantum authentication platform that combines Fully Homomorphic Encryption (FHE), Zero-Knowledge Proofs (ZKP), and Dilithium ML-DSA signatures in a single API call. Built by H33.ai, Inc.

Q: What is a Trusted Execution Environment (TEE)? A TEE is a secure area of the CPU that runs code in isolation from the operating system. H33 uses Intel SGX enclaves to process sensitive operations.

References - NIST. Post-Quantum Cryptography Standardization. FIPS 203 (ML-KEM), FIPS 204 (ML-DSA), 2024. - Brakerski, Z. Fully Homomorphic Encryption without Modulus Switching from Classical GapSV

Token D: Document Attestation 8.1 Content Attestation and Versioning Documents are stored off-chain. On-chain, Token D stores a Keccak-256 content hash that cryptographically binds the off-chain co

Q: Has H33 been audited? H33 undergoes continuous automated security auditing via cargo-audit, cargo-deny, and Trivy scanning. We maintain zero critical/high vulnerabilities. Third-party cryptologist

Q: What is formal verification and why does it matter? Formal verification uses mathematical proofs to guarantee code correctness for ALL possible inputs, not just test cases. H33 uses the Kani model

Q: What's the API rate limit? Rate limits by plan: - Free: 100 verifications/day - Starter: 10,000 verifications/month - Growth: 100,000 verifications/month - Enterprise: Unlimited (dedicated inf

Q: What happens if H33's servers are compromised? Even in a total server compromise, attackers cannot steal your identity because: - We don't store raw biometrics—only cryptographic commitments - P

Conclusion H33 represents a comprehensive approach to post-quantum identity and authentication. By building on lattice-based cryptography at every layer — from FHE biometric matching to Kyber key ex

Q: How does H33 handle key management? Cryptographic keys are: - Generated inside Intel SGX enclaves - Sealed to the specific CPU and enclave - Never exposed to the operating system or application

Q: What is defense-in-depth and how does H33 implement it? Defense-in-depth means multiple independent security layers. H33 implements 7 layers: - Layer 1: Network perimeter (TLS 1.3, mTLS) - Layer

Q: What is H33's security rating? H33 maintains a 9.9/10 security rating based on comprehensive automated and manual security assessments. This includes 1,600+ automated tests, zero critical/high vul

Infrastructure and Deployment 13.1 AWS Architecture - Compute: ECS on Graviton4 (c8g.metal-48xl for crypto, standard for API) - Database: RDS PostgreSQL for user management and session state - Ca

Token C: Soulbound Identity Token C implements non-transferable Soulbound Tokens (SBTs) that anchor on-chain identity to post-quantum cryptographic keys, biometric hashes, and verifiable credentials

Post-Quantum Cryptographic Primitives 4.1 ML-KEM (Kyber) Key Encapsulation All key exchange operations use Kyber768 (ML-KEM-768), providing NIST Security Level 3 (equivalent to AES-192). Kyber’s se

Q: How can I contact H33 support? You can reach our support team via: - Email: support@h33.io - Discord: discord.gg/h33 - Enterprise customers: Dedicated Slack channel and 24/7 support line For

Q: Is H33 available worldwide? H33 is available globally with some restrictions based on local regulations. Our privacy-preserving approach is designed to comply with GDPR, CCPA, and other privacy re

KYC and Compliance Tier | Price | Includes Basic KYC | $49 | Document verification, selfie match, OFAC screening Enhanced KYC | $79 | Basic + address verification, PEP/sanctions screening, Soulbound

Q: Is H33's FHE implementation formally verified? Yes. Our FHE implementation includes formal verification via the Kani model checker: - verify_polynomial_bounds: Proves coefficient values never ove

Q: How does FHE compare to zero-knowledge proofs? FHE and ZKPs are complementary technologies solving different problems: - FHE Purpose: Compute on encrypted data | ZKP Purpose: Prove statements wit

Q: What happens if I lose access to my account? Your biometric IS your recovery key—no seed phrases to lose or steal. If you lose access to your wallet or device: - Biometric recovery: Your unique b

Q: What is threshold decryption and why does H33 use it? Threshold decryption splits the secret key across multiple independent authorities. H33 uses a 3-of-5 threshold scheme: - No single point of

Q: What is a zero-knowledge proof? A zero-knowledge proof (ZKP) lets you prove something is true without revealing any information about WHY it's true. For example, you can prove you're over 21 witho

Q: How does H33 use zero-knowledge proofs? H33 uses ZKPs for: - Identity proofs: Prove you own an identity without revealing personal data - Biometric proofs: Prove your biometrics match without ex

Q: What ZKP capabilities does H33 provide? H33 provides zero-knowledge proof infrastructure for privacy-preserving attestations: - PLOOKUP: Zero-knowledge lookup arguments using SHA3-256 for post-qu

Q: How fast are H33's zero-knowledge proofs? Proof verification is nearly instant (under 3ms). Proof generation for identity attestations takes under 200ms on modern hardware. The core biometric auth

Q: Are zero-knowledge proofs mathematically secure? Yes. The ZKP schemes we use are based on well-studied cryptographic assumptions and have been peer-reviewed by the academic community. They provide

Q: What is a trusted setup and does H33 require one? A trusted setup generates initial parameters for certain ZKP systems. H33's PLOOKUP scheme uses transparent setup based on SHA3-256—no trusted cer

Q: Can ZKPs be verified on-chain? Yes. Our identity attestation proofs can be verified in Solana smart contracts efficiently. This enables trustless verification—anyone can verify a proof is valid wi

Q: What is the CKKS scheme and how does H33 use it? CKKS (Cheon-Kim-Kim-Song) enables approximate arithmetic on encrypted real numbers. H33 uses CKKS for: - ML inference: Running neural network laye