Protocol · How it works

A key derived from you. Not stored anywhere.

A noisy biometric reading produces the same cryptographic key, over and over. The key opens every chain, every FIDO2 service, every credential. Zero secrets at rest.

Security model → Architecture
BIOMETRIC (noisy) FUZZY EXTRACTOR Reed-Solomon + Pedersen commits (Dodis 2004) KEY k 128-bit · secret HELPER p ~3KB · public SUI · anchor p HelixIdentity object RE-DERIVE k on every use SUI ↔ ETH ↔ SOL ↔ FIDO2 ↔ W3C-VC — one key signs all
Derivation

Four steps. Click any step.

The full derivation from biometric to key to on-chain anchor. Explore each step interactively with animated diagrams.

Step 01
Read the biometric
Step 02
Enrollment: extract key + helper
Step 03
Anchor p on Sui
Step 04
Reproduction — use anywhere
What the math promises

Cryptographic guarantees.

Security
128-bit

Parametrizable. Standard cryptographic strength — same class as AES-128.

Tolerance
~20%

Hamming distance from enrollment scan. Room for real-world biometric noise.

Helper data
~3 KB

Fits in a single Sui object. Reveals zero bits about the key or biometric.

Privacy leak
0 bits

Biometric never leaves the device. Helper data provably leaks nothing.

Dive deeper

Three technical entry points.

01 · Security
Security model
Interactive attack simulator, key rotation demo, SlowMist 21/21 checklist.
02 · Architecture
Protocol architecture
Move contracts, zkLogin integration, six semantic burn functions, package inspector.
03 · Full spec
Whitepaper
Complete technical + economic paper. Cryptographic references, proofs.