Introduction

This repository contains the code for the KeyUtils library, which is a Python wrapper for the Qubic KeyUtils C++ library.

Motivation

The Qubic KeyUtils library is a C++ library that provides functions for generating keys and signatures for the Qubic blockchain. It is using fourq for hash algorithm, but unfortunatly it is not implemented in Python. So for the purpose of using Qubic in Python, I implemented binding for the KeyUtils library in Python.

Implemented Functions

• get_subseed_from_seed
• get_private_key_from_subseed
• get_public_key_from_private_key
• get_identity_from_public_key
• get_digest_from_siblings32
• get_tx_hash_from_digest
• get_public_key_from_identity
• check_sum_identity
• sign_with_nonce_k
• sign
• verify
• kangaroo_twelve

How to build

For Windows

1. Install Python 3.10 or later
2. Install Visual Studio 2022 Community Edition
3. Set Environment Variables for cl.exe
4. Open a new VS2022 x64 Native Tools Command Prompt and run the following commands

cl /LD /EHsc /I. /FeKeyUtils.dll KeyUtils.cpp

5. Check the exports of the DLL

dumpbin -exports KeyUtils.dll

For Linux

1. Install build essentials

sudo apt install build-essential

2. Build the DLL

g++ -shared -fPIC -o KeyUtils.so KeyUtils.cpp

3. Check DLL functions

nm -D libKeyUtils.so

For macOS

1. Build

clang++ -shared -o libKeyUtils.dylib KeyUtils.cpp

2. Check Lib functions

nm -g libKeyUtils.dylib

For more information

• Qubic KeyUtils
• QubiPy Repository