This example shows you how to sign data with the hierarchical deterministic (HD) wallet on the MIRkey Hardware Security Module

Please see the accompanying how to guide.

The example code can easily be converted into a utility to sign transactions offline/air-gapped or used on Bitcoin transaction servers.

Preparation

1. If you have not done so already, download and install the native shared library for your platform here: https://ellipticsecure.com/downloads/

   Important: Always verify the signature of the downloaded files

2. Initialize the device and set a user PIN with the eHSM Manager or pkcs11 tool

3. Install the ehsm Python wrapper

   pip install ehsm

Example

Signing a transaction hash with a BIP32 (Bitcoin etc.) derived key stored on a MIRkey or eHSM device using the derivation path "m/0/0".

./hdwallet-example.py 0,0 30440220644ff4e8877ac01ba12e72b1c1dcfee67a4d932d28b721b1249eaf16
Enter the device user PIN:
...
3045022100a26765f2e1709d2028a2ad17245d28d69bf5c5499bb32de6cd9deaff066496130220690bb4326446a413e37ad95072cb4754b559282083be079111c408ca57e85c17