Ethereum: How to Deploy a Safe Wallet in a Deterministic Way Depending on User EOA Address?

Here is an article on how to deploy a safe wallet in a deterministic way depending on the user’s EOA address using the Safe Protocol Kit and Ethers.js:

Title: Deploying a Safe Wallet with Deterministic EOA-Based Deployment: A Guide

Introduction

As a developer working with decentralized applications (dApps), you’ve likely encountered the need to deploy wallets securely and deterministically. In this article, we’ll explore how to create a safe wallet using the Safe Protocol Kit and Ethers.js that deploys in a deterministic way based on the user’s Externally Owned Account (EOA) address.

Understanding the Safe Protocol Kit

The Safe Protocol Kit is an open-source library developed by Binance Labs that provides a set of tools for building secure, decentralized applications. The Safe protocol enables you to deploy wallets and other application-specific smart contracts in a deterministic manner, ensuring that the wallet state is fixed and tamper-proof.

EOA-Based Deployment

To implement EOA-based deployment, we’ll use the ethers.js library to interact with the Ethereum blockchain. We’ll create a function that takes an EOA address as input and returns a unique wallet address based on that EOA.

import { ethers } from 'ethers';


const generateWalletAddress = (eoaAddress) => {

  // Use the ethers library's derive function to generate a new wallet address.

  const walletAddress = ethers.ethers.utils deriveAddress(eoaAddress, 4);

  

  return walletAddress;

};

Safe Wallet Deployment

Now that we have a function to generate a unique wallet address based on an EOA, we can use it to deploy the Safe Wallet. We’ll create a new Safe wallet with a fixed wallet address and set its state to be deterministic.

const safeWallet = new ethers.Wallet(generateWalletAddress('0x...'), '1');

To ensure that the wallet deployment is deterministic based on the EOA, we can use the ethers.js library’s getFactory function to get a new wallet factory instance for each EOA address. We’ll then set the state of the Safe Wallet to be deterministic by setting its wallet address and setting the state to 0x....

const wallets = {

  '0x...': safeWallet,

};


safeWallet.setFactory('SafeWalletFactory', wallets);

Deterministic EOA-Based Deployment

To deploy the Safe Wallet based on a specific EOA, we can simply use the generated wallet address and set its state to be deterministic. The ethers.js library will automatically generate a new wallet instance for that EOA.

const eoaAddress = '0x...';

safeWallet.setFactory('SafeWalletFactory', { walletAddress: generateWalletAddress(eoaAddress) });

Conclusion

In this article, we’ve demonstrated how to deploy a Safe Wallet with deterministic EOA-based deployment using the Safe Protocol Kit and Ethers.js. By generating unique wallet addresses based on user EOA addresses and setting their states to be deterministic, you can ensure that your applications are secure and tamper-proof.

Example Use Case

Here’s an example of how you might use this function in a deployment script:

const deploySafeWallet = async () => {

  try {

    const eoaAddress = '0x...';

    const walletAddress = generateWalletAddress(eoaAddress);

    

    // Set the state of the Safe Wallet to be deterministic.

    safeWallet.setFactory('SafeWalletFactory', { walletAddress });

    

    console.log(Safe Wallet deployed with address: ${walletAddress});

  } catch (error) {

    console.error(error);

  }

};

By following these steps, you can create a secure and deterministically deployable Safe Wallet that is based on the user’s EOA addresses.

Ethereum H3620 Such