[Archive] Get wallet address (public key) of email without getting the private key

Embedded Wallets (Web3Auth)
1

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This topic was originally posted by mikeherbig on 9/25/2023.
This content has been migrated from our previous community forum to preserve valuable discussions.

Get wallet address (public key) of email without getting the private key

2

@mikeherbig Welcome Aboard!

To accomplish it, you can use an external package and implement the following code snippet in your project:

For Ethereum (EVM), please follow the below code:

import publicKeyToAddress from 'ethereum-public-key-to-address';

const parseTokenAndReturnAddress = (token) => {

if (!token) return null

const base64Url = token.split(‘.’)[1]

const base64 = base64Url.replace(/-/g, ‘+’).replace(/_/g, ‘/’)

const jsonPayload = decodeURIComponent(

atob(base64)

.split(‘’)

.map((c) => %${00${c.charCodeAt(0).toString(16)}.slice(-2)})

.join(‘’)

)

console.log(JSON.parse(jsonPayload).wallets[0].public_key)

return publicKeyToAddress(JSON.parse(jsonPayload)?.wallets[0]?.public_key || ‘’)

}

For Solana(Ed25519 keys), please follow the below code:

const bs58 = require('bs58')

function publicKeyToSolanaAddress(publicKey) {

let buffer = Buffer.from(publicKey, “hex”)

let address = bs58.encode(buffer)

return address

}

You can simply pass the Web3Auth token to this function.

3

No, it is not possible as we get the address only after authentication.