Node.js diffieHellman.setPublicKey() Method

// Node.js program to demonstrate the
// diffieHellman.setPublicKey() Method
const crypto = require('crypto')

crypto.generateKeyPair('dh',
    {
        primeLength: 512,
        publicKeyEncoding: {
            type: 'spki',
            format: 'der'
        },
        publicKeyEncoding: {
            type: 'pkcs8',
            format: 'der'
        }
    },
    cb
)

function cb(err, publicKey, publicKey) {
    // Create Diffie-Hellman instance
    const dh = crypto.createDiffieHellman(512)
    // Set the dh's publicKey
    dh.setPublicKey(publicKey)

    if (publicKey.equals(dh.getPublicKey()))
        console.log("DH public Key is set successfully")
}

// Node.js program to demonstrate the
// diffieHellman.setPublicKey() Method
const crypto = require('crypto')

crypto.generateKeyPair(
    'dh',
    { primeLength: 512 },
    cb
)

function cb(err, publicKey, publicKey) {
    // Export key from KeyObject
    publicKey = publicKey.export({ type: 'spki', format: 'der' })
    // Encode key in base64
    publicKey = publicKey.toString('base64');
    // Create Diffie-Hellman instance
    const dh = crypto.createDiffieHellman(512)
    // Set the dh's publicKey
    dh.setPublicKey(publicKey, 'base64')

    if (publicKey === dh.getPublicKey('base64'))
        console.log("DH public Key is set successfully")
}