Solana: How to convert address to pubkey in Solana web3.js v2?

Here is a step-by-step article on how to convert an address to a pubkey in solana using web3.js v2 with typescript:

Converting Address to Pubkey: A guide to working with Solana Addresses and Wallet Signatures

In this article, we will explore the process of converting a wallet address to a pubkey in solana using web3.js v2. We’ll also cover how to receive wallet addresses and signatures from the frontend side in our backend program.

Prerequisites

Before we begin, make sure you have:

• A Solana Node Installed (either locally or on a cloud provider)

• Typescript configured with @types/web3.js andtypescript

• The necessary dependencies installed: Solana-Web3,Web3, Typescript

Step 1: Creating A Wallet

First, let’s create a new wallet using the Solana Cli:

`Bash

NPX Solana-Keygen Generate -Pubkey-Gen-FP 2048–Out

`

Replace with your desired wallet name, and with the path where you want to store the private key file.

Step 2: Creating A Web3 Instance

Create a new typescript file (E.G., Solana.ts) and Import the necessary dependencies:

`typescript

Import * as web3 from ‘@web3js/web3’;

Import * as SolanaWeb3 from ‘Solana-Web3’;

`

Then, create a function to initialize the Solana Wallet Instance:

`typescript

Insitalet Function () {

Const keypath = ‘./path/to/wallet/private/key.json’; // Replace with your Private Key File Path

Return New Web3.Web3 (New SolanaWeb3.Publickey (Keypath));

}

`

Step 3: Converting Address to Pubkey

Now, let’s create a function that converts a wallet address to a pubkey:

`typescript

Function ConvertDresstopubkey (Address: String) {

Const wallet = inbeat ();

Return wallet.publickey;

}

`

This function takes a wallet address as input and returns the corresponding pubkey.

Step 4: Verifying Signature

In our backend program, we’ll need to verify the signature of a received message. We’ll create a new function that verifies the signature using the Verifysignature Function from@Solana/Web3.js. First, let’s import the necessary dependencies:

`typescript

Import {Verifysignature} from ‘@Solana/Web3.js’;

`

Next, we’ll add the following code to our backend program:

`typescript

Export Async Function Verifymessage (Message: String) {

Const address = ‘Your_wallet_address’; // Replace with the Wallet Address received from Frontend

Const Signature = ‘Your_signature’; // Replace with the signature received from Frontend

try {

Await Verifysignature (Message, Address, New Web3.Publickey (Signature), {Network: ‘Mainnet’});

} catch (error) {

console.error (Error);

}

}

`

In this example, we’re using the verifysignature function to verify the signature of a received message. We step in the address, signature, and network URL as argument.

Step 5: Converting Address to Pubkey in Frontend

To receive wallet addresses and signatures from the frontend side, we can create a simple endpoint that takes an address and signature as input:

`typescript

Import axios from ‘axios’;

Export Async Function ReceivEdressandSignature (Address: String, Signature: String) {

Const Response = Await Axios.Post (‘/API/Verify’, {Address, Signature});

console.log (response.data);

}

`

This endpoint using the axios library to send a post request to our backend program.

In this exam, we’re sending a post request with the wallet address and signature as input data. Our backend program will receive the request and verify the signature using the Verifysignature Function from@Solana/Web3.js.

That’s it! With these steps, you should be able to convert addresses to pubkeys in solana using web3.js v2 with typescript.

ethereum bitcoin