Creating Secure AA Wallets with Python: A Guide for Ethereum

As a developer, managing digital assets like cryptocurrencies can be complex. One of the most secure and convenient ways to store and manage your coins is by using an Auto Address (AA) wallet. In this article, we will explore how to create secure AA wallets using Python and the Gnosis library.

Introduction

Gnosis is a popular open-source project that provides a simple and secure way to manage Ethereum addresses. The library offers several tools for creating and managing AA wallets, including key generation, transaction signing, and conversion between different formats (e.g. PEM, OpenPGP).

Prerequisites

Before we dive into the code, make sure you have:

• Python 3.6+

• dnspython for DNS resolution

• pyOpenSSL for encryption

• Gnosis library (pip install gnosis-py)

Setting up the project

Create a new Django project and add the following dependencies:

django-admin startproject aa_wallets
cd aa_wallets
pip install dnspython pyOpenSSL

Creating an AA wallet

In your Django application, create a new models.py file with the following code:

from django.db import models
class AAWallet(models.Model):
name = models.CharField(max_length=255)
private_key = models.CharField(max_length=256)
public_key = models.CharField(max_length=256)
def __str__(self):
return self.name

Creating an AA Wallet in Django

In your Django application, create a new view function create_wallet that will generate and store the AA wallet:

from .models import AAWallet
def create_wallet(request):
if request.method == 'POST':
data = request.POST
name = data['name']
private_key = data['private_key']
public_key = data['public_key']









Generate a new private key for the wallet
aa_wallet = AAWallet(name=name, private_key=private_key)
aa_wallet.save()
return HttpResponse("AA wallet created successfully!")
else:
return render(request, 'create_wallet.html')

Generating an AA wallet using Gnosis

To generate an AA wallet securely and conveniently, use the following code:

import os
from gnosis_py import create_aa_wallet
def generate_wallet(request):
if request.method == 'POST':
data = request.POST
name = data['name']
private_key_file = data['private_key_file']

Create an AA wallet using Gnosis's create_aa_wallet function
aa_wallet = create_aa_wallet(private_key_file, name)
return HttpResponse("AA Wallet created successfully!")
else:
return render(request, 'generate_wallet.html')

Signing transactions

To sign transactions, use the following code:

import os
from gnosis_py import sign_transaction
def sign_transaction(request):
if request.method == 'POST':
data = request.POST
address = data['address']

Generate a new private key for the wallet
aa_wallet = AAWallet(name='My AA Wallet', private_key=os.path.expanduser('~/.gnosis/').joinpath('private_key.pem'))

Sign a transaction using the function Gnosis sign_transaction
signed_transaction = sign_transaction(aa_wallet, address)
return HttpResponse("Transaction successfully signed!")
else:
return render(request, 'sign_transaction.html')

Conclusion

In this article, we showed you how to securely create and manage AA wallets with Python using the Gnosis library. By following these steps:

• Create a new Django project and add dependencies.

• Define an AAWallet model in your application.

• Create views to create and generate AA wallets.

4.

METAMASK EMBEDDING WALLET WEBPAGE