'use strict';

const crypto = require ('crypto');

/**
 * creates a sha256 hash
 *
 * @param {any} data input
 * @returns {string} hash
 */
function checksum (data) {
  const md = crypto.createHash ('sha256');
  md.update (String (data));
  return md.digest ('hex');
}

/**
 * creates a sha512 hash
 *
 * @param {string} str string input
 * @param {string} salt salt
 * @returns {string} salt
 */
function hash_sha512 (str, salt) {
  const md = crypto.createHash ('sha512');
  md.update (str);
  md.update (salt);
  return md.digest ('hex');
}

module.exports = {
  hash_sha512,
  checksum
};