How to use

pbkdf2

function

in

crypto

/**
  * Hi() is, essentially, PBKDF2 [RFC2898] with HMAC() as the
  * pseudorandom function (PRF) and with dkLen == output length of
  * HMAC() == output length of H()
  *
  * @returns {Promise<Buffer>}
  */
 static hi(password, salt, iterations, digestDefinition) {
  return new Promise((resolve, reject) => {
   crypto.pbkdf2(
    password,
    salt,
    iterations,
    digestDefinition.length,
    digestDefinition.type,
    (err, derivedKey) => (err ? reject(err) : resolve(derivedKey))
   )
  })
 }

crypto.pbkdf2(password, salt, defaultIterations, defaultKeyLength, function (err, key) {
        if (err) {
          callback(err);
        }
        return callback(null, key.toString('base64'));
      })

app.get("*", (req, res) => {
    //doWork(5000);
    const start = Date.now();
    crypto.pbkdf2("a", "b", 100000, 512, "sha512", () => {
      const msg = "1:" + (Date.now() - start);
      console.log("Send " , msg);
      res.status(200).send(msg);
    });
  });

crypto.randomBytes(len, function(err, salt) {
      if (err) return fn(err);
      salt = salt.toString('base64');
      crypto.pbkdf2(pwd, salt, iterations, len, function(err, hash) {
        if (err) return fn(err);
        fn(null, salt, hash.toString('base64'));
      });
    });

function doHash() {
 crypto.pbkdf2('a', 'b', 100000, 512, 'sha512', () => {
  console.log('Hash:', Date.now() - start);
 });
}

app.get('/slow', (req, res) => {
 crypto.pbkdf2('a', 'b', 100000, 512, 'sha512', () => {
  res.send('Hello World, This was slow!');
 });
});

function doWorkReal(cb) {
  crypto.pbkdf2('a', 'b', 100000, 512, 'sha512', () => {
   cb()
  })
 }

crypto.randomBytes(len, function(err, salt) {
      if (err) return fn(err);
      salt = salt.toString('base64');
      crypto.pbkdf2(pwd, salt, iterations, len, function(err, hash) {
        if (err) return fn(err);
        fn(null, salt, hash);
      });
    });

app.get("*", (req, res) => {
 //doWork(5000);
 const start = Date.now();
 crypto.pbkdf2("a", "b", 100000, 512, "sha512", () => {
  const msg = "1:" + (Date.now() - start);
  console.log("Send " , msg);
  res.status(200).send(msg);
 });
});

app.get('/slow', (req, res) => {
 crypto.pbkdf2('a', 'b', 100000, 512, 'sha512', () => {
  res.send('Hello World, This was slow!');
 });
});

// I am a child, i am going to act like a server
 app.get('/', (req, res) => {
  crypto.pbkdf2('a', 'b', 100000, 512, 'sha512', () => {
   res.send('Hello World');
  });
 });

crypto.pbkdf2('a', 'b', 100000, 512, 'sha512', () => {
 console.log('4:', Date.now() - start);
});

crypto.pbkdf2('a', 'b', 100000, 512, 'sha512', () => {
 console.log('1:', Date.now() - start);
});

crypto.pbkdf2('a', 'b', 100000, 512, 'sha512', () => {
 console.log('2:', Date.now() - start);
});

crypto.pbkdf2('a', 'b', 100000, 512, 'sha512', () => {
 console.log('3:', Date.now() - start);
});