createAccountForUpdate example

createAccoutForUpdate.js

const Caver = require('caver-js');
const caver = new Caver('https://api.baobab.klaytn.net:8651');

const address = '0x{address_of_account_you_wish_to_update}';
const oldPrivateKey = '0x{effective_private_key_bound_to_the_address_above}';
const newPrivateKey = caver.klay.accounts.create().privateKey; // new private key to update

// use createAccountForUpdate
const accountForUpdate = caver.klay.accounts.createAccountForUpdate(address, newPrivateKey);
console.log('>>> about to configure ACCOUNT(address=', address, ') with the following key:', newPrivateKey)

const updateTx = {
    type: 'ACCOUNT_UPDATE',
    from: address,
    key: accountForUpdate,
    gas: 300000,
}

async function print(updateTx) {
    // sign with private key, not with address    
    const signed = await caver.klay.accounts.signTransaction(updateTx, oldPrivateKey);

    // CAUTION: once this transaction gets passed, your old account uses the new private key
    const receipt = await caver.klay.sendSignedTransaction(signed)
    console.log(receipt)
    console.log('>>> new private key is in effect:', newPrivateKey);
    console.log('>>> old private key is no longer effective:', oldPrivateKey);

    const updatedKey = await caver.klay.getAccountKey(address)
    console.log(updatedKey)
}

print(updateTx)