Zkbiolock Register Key

Preserve unlinkability across relying parties where required.

Support revocation and recovery mechanisms.

Target platforms: mobile (iOS/Android), web (Trusted Execution / WebAuthn / WASM), and backend verifier services.

Threat model: untrusted network, honest-but-curious verifier by default; consider malicious verifier and device compromise as elevated threats.

The term “register key” in ZKBioLock refers to a temporary encrypted handshake between the software and the hardware (like a ZKTeco K20, K40, or other biometric terminal). It is not a serial number you type in from an email.

Common causes include:

| Cause | Explanation | |-------|-------------| | Driver missing | Windows didn’t install the USB driver for the biometric device. | | Wrong device type selected | You chose “TCP/IP” but the device is connected via USB. | | Software version mismatch | ZKBioLock is older than the connected device’s firmware. | | Corrupt installation | The software registry keys or config files are broken. | | Admin rights missing | The software can’t write the temporary key to Windows. | zkbiolock register key

Minimize heavy operations in SNARK by:

Circuit outputs: boolean success + signature verification flag.


  "key_id": "550e8400-e29b-41d4-a716-446655440000",
  "user_id": "user_8f3b2a",
  "device_id": "device_a12b34",
  "pub_key": "-----BEGIN PUBLIC KEY-----\\n...",
  "zk_commitment": "mF3s9... (base64)",
  "salt": "c2FsdF9ieXRlcw==",
  "challenge_nonce": "5f2d... (base64)",
  "issued_at": "2026-04-07T12:00:00Z",
  "expires_at": "2027-04-07T12:00:00Z",
  "policy": 
    "uses": ["auth","unlock"],
    "revocable": true,
    "re_enroll_after": "30d"
  ,
  "binding_proof": "MEUCIQ... (base64 sig)",
  "version": "zkbiolock-v1",
  "metadata": 
    "device_model": "Pixel 8",
    "os": "Android 14"