How to create private key and public key with web3?

Question

I want to create a private key and public key, basically a new account in Ethereum using web3. But I want to generate a private key that is 32 bytes in length. Does anyone know how to generate the same?

I used the following code, but not able to generate a 32 bytes long private key.

web3.eth.accounts.create();

Answer 1

Ethereum uses 32 bytes (which is 64 hex characters) long private keys.

You can access the private key generated using the accounts.create() method (docs) in the privateKey property.

const account = web3.eth.accounts.create();
console.log(account.privateKey);