MD5 Algorithm for Google Sheets

MD5.js

function MD5 (input) {
  var digest = Utilities.computeDigest(Utilities.DigestAlgorithm.MD5, input);
  var output = "";
  for (i = 0; i < digest.length; i++) {
    var h = digest[i];
    if (h < 0) { h += 256; }
    if (h.toString(16).length == 1) { output += '0'; }
    output += h.toString(16);
  }
  return output;
}