phpjs/functions/strings/md5_file.js

php.js offers community built php functions in javascript

function md5_file(str_filename) {
  // From: http://phpjs.org/functions
  // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +      input by: Brett Zamir (http://brett-zamir.me)
  // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // -    depends on: file_get_contents
  // -    depends on: md5
  // *          test: skip
  // *     example 1: md5_file('http://kevin.vanzonneveld.net/pj_test_supportfile_1.htm');
  // *     returns 1: '202cb962ac59075b964b07152d234b70'

  var buf = '';

  buf = this.file_get_contents(str_filename);

  if (!buf) {
    return false;
  }

  return this.md5(buf);
}