devicedna/fingerprint/hashData.js

building your own device fingerprinting library

export const hashData = (obj) => {
  const keys = Object.keys(obj).sort();
  const fingerprintString = keys.map(key => `${key}:${obj[key]}`).join('|');
  return fingerprintString;
  // return djb2Hash(fingerprintString);
};

function djb2Hash(str) {
  let hash = 5381;
  for (let i = 0; i < str.length; i++) {
    hash = ((hash << 5) + hash) + str.charCodeAt(i); // hash * 33 + c
    hash = hash & 0xFFFFFFFF; // force 32-bit integer
  }
  return Math.abs(hash).toString(16); // hex string
}