Introduction

The Set Pinless Path command in Cryptnox allows you to enable a pinless authentication mode by assigning a predefined BIP32 derivation path that does not require PIN verification. This feature is useful for securely authorizing specific operations without entering a PIN, while still maintaining controlled access.

It requires a secure channel and a valid seed or extended key to function. The path must be EIP1581 compliant (m/43'/60'/1581') and consist of at least three levels, using 32-bit big-endian integers. To disable the pinless authentication, the command can be called with 0-byte data, but this requires a PUK for verification. Currently, we support only the "K1" key pair.

This setup ensures secure, PIN-free authentication while maintaining strict access control.

Command Specifications

Set Pinless Path Command

The Set Pinless Path command in Cryptnox enables authentication without a PIN by assigning a predefined BIP32 derivation path.

The following code snippet outlines the Python object for this command:

def set_pinless_path(puk:str, path: str = "m/44'/0'/0'/0/0"):
    card.set_pinless_path(path, puk)

For example, set_pinless_path("puk_code", "m/44'/0'/0'/0/0").

Application Protocol Data Unit (APDU) Components

The following table outlines the components of the Application Protocol Data Unit (APDU).

📘

Prerequisites:

• The secure channel must be open.
• A seed or extended key must be loaded.

Response

The following table outlines the possible responses that you will receive: