Intro: I am trying to create a web app where I can send some tokens from my personal account to another. I found out a possible way to achieve my goal using ethers.js in the following way:

// connect to metamask
let provider = new ethers.providers.Web3Provider(window.ethereum)

// define who signs the contract
const signer = new ethers.Wallet(your_private_key_string, provider);

// token infos
const tokenAddress = "0xEwgwegwdsB87f8Ebd86wegwegvweg"
      const tokenAbi = [
          // Some details about the token
          "function transfer(address to, uint amount)"

// define contract
const tokenContract = new ethers.Contract(piaAddress, piaAbi, provider)

// send tokens from my wallet to someone else's.
tokenContract.connect(signer).transfer("receiverAddress", "500000000")

Problem: As you can see from the code, at one point I need to provide your_private_key_string. This would be fine if no one had access to my web app, but since I should be hosted in the internet, it would be exposed to all users thus making it vulnerable.

Question: Would you be able to suggest a smart and elegant way to perform the same task but avoiding to share my private key?

Note: the web-app is developed with Django in case it might help.

1 Answer 1


You can use python-dotenv to store your private key in DjangoApp and fetch it from there. There is a good explanation and video tutorial in this answer.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.