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MOBILE · EDGE · ARM NATIVE

ARM-Native 32-bit FHE.
Built for Mobile.

Purpose-built for phones and edge devices. Uses native ARM NEON SIMD instructions for near-2x faster transforms on Apple Silicon and Snapdragon. Compatible wire format with BFV — mobile encrypts, cloud computes.

Get API Key → FHE Overview Compare BFV-64
~2x
Faster on ARM
4-lane
NEON SIMD
Same
Wire Format
M1–M4
Apple Silicon
PIPELINE

Encrypt on Device, Compute in Cloud

BFV32 handles on-device encryption with native ARM performance. The compatible wire format means your cloud backend processes ciphertexts with full BFV-64 power.

1 On-Device
ARM NEON Encrypt
Biometric template or PII encrypted on-device using 32-bit native ARM NEON SIMD. 4-lane uint32x4_t operations eliminate 64-bit overhead.
ARM NEON uint32x4_t On-device Low-power
→
2 Transit
BFV Wire Format
Ciphertext serialized in standard BFV wire format. Compatible with BFV-64 cloud backends. No re-encryption or format conversion needed.
BFV-compatible Standard wire TLS 1.3
→
3 Cloud
BFV-64 Compute
Cloud backend performs FHE operations on the ciphertext using full 64-bit BFV engine. Inner product, biometric matching, encrypted search — all on encrypted data.
BFV-64 Graviton4 SIMD batch
→
4 Return
Encrypted Result
Encrypted result returned to device. Client-side decryption with on-device private key. Server never sees plaintext at any stage.
E2E encrypted Client decrypt Zero exposure
Mobile-to-Cloud Pipeline
Encrypt locally, compute remotely
Server never sees plaintext
SECURITY

BFV32 Security Parameters

32-bit native operations for ARM NEON performance. Same polynomial ring and security guarantees as BFV-64 — compatible at the wire level.

Parameter Value
Scheme BFV (32-bit native ops)
Polynomial degree (N) 4,096
Modulus bit-width 32-bit native
SIMD lanes 4-lane NEON uint32x4_t
Wire format BFV-compatible (interop with 64-bit cloud)
Target platforms M1–M4 Apple Silicon, Snapdragon 8 Gen
Security level 128-bit (NIST Level 1)
API

Two BFV32 API Tiers

Choose the performance level for your mobile workload. Both tiers use the same ARM NEON-optimized engine with BFV-compatible wire format.

H0 Turbo32 — 1 credit/op
Ultra-fast 32-bit FHE for mobile biometrics and lightweight encryption. Optimized for single-operation workloads on battery-constrained devices. ~50µs per operation on ARM.
POST/v1/fhe/bfv32/keygen
POST/v1/fhe/bfv32/encrypt
POST/v1/fhe/bfv32/decrypt
POST/v1/fhe/bfv32/add
POST/v1/fhe/bfv32/multiply
POST/v1/fhe/bfv32/biometric-match
GET/v1/fhe/bfv32/health
Example — Mobile encrypt
curl -X POST https://api.h33.ai/v1/fhe/bfv32/encrypt \
  -H "Authorization: Bearer $H33_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"plaintext": [128, 64, 32, ...], "mode": "turbo32"}'
H1 Standard32 — 2 credits/op
Full-depth 32-bit FHE for edge computing with multi-operation circuits. Supports deeper computation chains while maintaining ARM NEON performance. ~100µs per operation.
POST/v1/fhe/bfv32/keygen
POST/v1/fhe/bfv32/encrypt
POST/v1/fhe/bfv32/decrypt
POST/v1/fhe/bfv32/add
POST/v1/fhe/bfv32/multiply
POST/v1/fhe/bfv32/inner-product
POST/v1/fhe/bfv32/biometric-match
GET/v1/fhe/bfv32/health
Example — Edge inner product
curl -X POST https://api.h33.ai/v1/fhe/bfv32/inner-product \
  -H "Authorization: Bearer $H33_API_KEY" \
  -H "X-H33-Tier: standard32" \
  -d '{"ciphertext_a": "ct_xyz", "ciphertext_b": "ct_abc"}'
Use Cases

FHE at the Edge

BFV32 brings fully homomorphic encryption to mobile and edge devices. Encrypt on-device with ARM-native performance, compute in the cloud without decrypting.

Mobile Biometric Auth
Encrypt fingerprint and face templates on-device with ARM NEON acceleration. Match against encrypted database in the cloud. The biometric template never leaves the phone unencrypted. iOS and Android native SDKs.
Edge IoT Encryption
Sensor data encrypted at the edge on battery-constrained ARM devices. 32-bit native operations minimize power draw while maintaining full FHE security. Ideal for medical wearables, industrial sensors, and smart infrastructure.
Hybrid Mobile-Cloud
Encrypt on the phone, compute in the cloud, decrypt on the phone. BFV32 ciphertexts are wire-compatible with BFV-64 cloud backends. No format conversion or re-encryption overhead. True end-to-end encrypted compute.
Offline-First Apps
Encrypt sensitive data locally without network connectivity. Queue encrypted payloads for batch upload when connection is available. ARM NEON acceleration ensures encryption doesn't drain the battery.

Start Building With BFV32

ARM-native 32-bit FHE for mobile and edge. Compatible wire format with BFV-64 cloud. Free tier included.

Get Free API Key → FHE Overview
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