PRODUCTION · 1.2M AUTH/SEC

1.2 Million Authentications Per Second.
Zero Data Exposure.

BFV lattice-based fully homomorphic encryption. N=4096 polynomial ring, 56-bit modulus, SIMD batching. 32 users verified in a single 1,375µs ciphertext operation.

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0µs
Per Auth
0/s
Sustained
0
Users/CT
0-bit
NIST L1
PIPELINE

Single API Call, Fully Post-Quantum

Three stages execute in sequence. One API call. Every component is lattice-based or hash-based. No classical-only dependencies.

1 FHE Batch
BFV Inner Product
Encrypted biometric matching over 32 users simultaneously. SIMD-packed ciphertext, NTT-domain fused inner product with single final INTT.
32 users/CT N=4096 BFV Lattice
~1,375µs
→
2 ZKP
STARK Lookup
Zero-knowledge proof that the FHE computation was performed correctly. Cached STARK with SHA3-256 hash commitment. Sub-microsecond verification.
SHA3-256 STARK Cached Hash-based
~0.067µs
→
3 Attestation
SHA3 + Dilithium
SHA3 digest of the entire computation, then a single Dilithium (ML-DSA) sign+verify to attest the batch. Post-quantum attestation per 32-user batch.
ML-DSA FIPS 204 Batch Lattice
~240µs
Total Pipeline Latency
~1,615µs / 32 users
≈ ~50µs per authentication
SECURITY

NIST Level 1 BFV Parameters

Conservative parameter selection validated against the Homomorphic Encryption Standard. All operations in the polynomial ring Z[X]/(XN+1).

Parameter Value
Polynomial degree (N) 4,096
Ciphertext modulus (Q) 56-bit single
Plaintext modulus (t) 65,537
Standard deviation (σ) 3.2
SIMD slots 4,096 ÷ 128 = 32 per ciphertext
Security level 128-bit (NIST Level 1)
API

Three Tiers of Cryptographic Trust

Choose the trust level your application requires. Each tier builds on the one below it. All tiers include full FHE computation.

Tier 1: FHE Compute
Raw BFV homomorphic encryption operations. Key generation, encrypt/decrypt, arithmetic, and biometric matching. No attestation layer — you manage trust externally.
POST/v1/fhe/h33-128/keygen
POST/v1/fhe/h33-128/encrypt
POST/v1/fhe/h33-128/decrypt
POST/v1/fhe/h33-128/add
POST/v1/fhe/h33-128/multiply
POST/v1/fhe/h33-128/inner-product
POST/v1/fhe/h33-128/biometric-match
GET/v1/fhe/h33-128/health
Example
curl -X POST https://api.h33.ai/v1/fhe/h33-128/encrypt \
  -H "Authorization: Bearer $H33_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"plaintext": [1, 0, 1, 0, ...], "public_key_id": "pk_abc123"}'
Tier 2: FHE + Dilithium Attestation
Everything in Tier 1, plus post-quantum Dilithium (ML-DSA) signatures on every compute result. All FHE endpoints automatically return a dilithium_signature field.
POST/v1/fhe/h33-128/keygen
POST/v1/fhe/h33-128/encrypt
POST/v1/fhe/h33-128/decrypt
POST/v1/fhe/h33-128/add
POST/v1/fhe/h33-128/multiply
POST/v1/fhe/h33-128/inner-product
POST/v1/fhe/h33-128/biometric-match
GET/v1/fhe/h33-128/health
POST/v1/fhe/h33-128/dilithium/keygen
POST/v1/fhe/h33-128/dilithium/sign
POST/v1/fhe/h33-128/dilithium/verify
Example — Every compute response includes attestation
curl -X POST https://api.h33.ai/v1/fhe/h33-128/biometric-match \
  -H "Authorization: Bearer $H33_API_KEY" \
  -H "X-H33-Tier: dilithium" \
  -d '{"ciphertext_id": "ct_xyz", "template_id": "tmpl_abc"}'

# Response includes:
# "dilithium_signature": "base64...",
# "dilithium_public_key": "base64..."
Tier 3: FHE + H33-3-Key Triple Attestation
Maximum trust. Every compute result carries a full H33-3-Key nested signature bundle: Ed25519 + Dilithium-5 + FALCON-512. Three independent mathematical families. Zero single points of failure.
POST/v1/fhe/h33-128/keygen
POST/v1/fhe/h33-128/encrypt
POST/v1/fhe/h33-128/decrypt
POST/v1/fhe/h33-128/add
POST/v1/fhe/h33-128/multiply
POST/v1/fhe/h33-128/inner-product
POST/v1/fhe/h33-128/biometric-match
GET/v1/fhe/h33-128/health
POST/v1/fhe/h33-128/dilithium/keygen
POST/v1/fhe/h33-128/dilithium/sign
POST/v1/fhe/h33-128/dilithium/verify
POST/v1/fhe/h33-128/3key/keygen
POST/v1/fhe/h33-128/3key/sign
POST/v1/fhe/h33-128/3key/verify
Example — Full 3-layer signature bundle on every response
curl -X POST https://api.h33.ai/v1/fhe/h33-128/biometric-match \
  -H "Authorization: Bearer $H33_API_KEY" \
  -H "X-H33-Tier: 3key" \
  -d '{"ciphertext_id": "ct_xyz", "template_id": "tmpl_abc"}'

# Response includes full 3-layer signature bundle:
# "h33_3key_signature": "base64...",
# "ed25519_pk": "base64...",
# "dilithium_pk": "base64...",
# "falcon_pk": "base64..."
Included with every API call
H33 Noise Pilot

Automatic Noise Management. Zero Configuration.

Every H33-128 API call is powered by Noise Pilot — our AI-driven noise budget optimizer. It tracks, schedules, and optimizes FHE noise automatically so you never worry about ciphertext corruption or budget exhaustion.

Noise Budget Tracking
Every operation returns remaining noise budget in bits. Noise Pilot monitors degradation in real-time and warns before exhaustion.
Auto Mod-Switch Scheduling
Noise Pilot automatically schedules modulus switching before budget exhaustion, extending computational depth without developer intervention.
AI Crypto Health — 0.52µs
Native Rust AI agent continuously assesses parameter health, noise distribution, and operational integrity at sub-microsecond latency.
Operation Recommendations
Query the Noise Pilot API for optimal operation ordering, parameter selection, and depth estimates before executing your FHE pipeline.
Use Cases

Built for Production Privacy

H33-128 BFV enables computation on encrypted data at scale. The data never leaves encryption — not during transit, not during processing, not ever.

Biometric Authentication
Match fingerprints, faces, and iris scans without ever decrypting the biometric template. 32 users verified simultaneously in a single ciphertext operation. The server never sees raw biometrics.
Identity Verification
Verify identity documents, credentials, and claims against encrypted databases. Run FHE comparisons on encrypted PII without exposing names, addresses, or government IDs to the compute layer.
Financial KYC
Run know-your-customer checks, sanctions screening, and AML scoring on encrypted customer data. Meet compliance requirements while maintaining zero-knowledge of the underlying financial records.
Healthcare Records
Perform encrypted queries on patient records, medication interactions, and diagnostic data. HIPAA-compatible by design — PHI is never decrypted on the server. Fully auditable computation trail.

Start Building With H33-128

BFV homomorphic encryption at 1.2 million auth/sec. Free tier included. No credit card required.

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