+ function showChecksum() {
+ var phrase = DOM.phrase.val();
+ var words = phraseToWordArray(phrase);
+ var checksumBitlength = words.length / 3;
+ var checksum = "";
+ var binaryStr = "";
+ var language = getLanguage();
+ for (var i=words.length-1; i>=0; i--) {
+ var word = words[i];
+ var wordIndex = WORDLISTS[language].indexOf(word);
+ var wordBinary = wordIndex.toString(2);
+ while (wordBinary.length < 11) {
+ wordBinary = "0" + wordBinary;
+ }
+ var binaryStr = wordBinary + binaryStr;
+ if (binaryStr.length >= checksumBitlength) {
+ var start = binaryStr.length - checksumBitlength;
+ var end = binaryStr.length;
+ checksum = binaryStr.substring(start, end);
+ }
+ }
+ DOM.entropyChecksum.text(checksum);
+ }
+