src/js/index.js

   1 (function() {
   2
   3     // mnemonics is populated as required by getLanguage
   4     var mnemonics = { "english": new Mnemonic("english") };
   5     var mnemonic = mnemonics["english"];
   6     var seed = null;
   7     var bip32RootKey = null;
   8     var bip32ExtendedKey = null;
   9     var network = bitcoinjs.bitcoin.networks.bitcoin;
  10     var addressRowTemplate = $("#address-row-template");
  11
  12     var showIndex = true;
  13     var showAddress = true;
  14     var showPubKey = true;
  15     var showPrivKey = true;
  16     var showQr = false;
  17
  18     var entropyChangeTimeoutEvent = null;
  19     var phraseChangeTimeoutEvent = null;
  20     var rootKeyChangedTimeoutEvent = null;
  21
  22     var generationProcesses = [];
  23
  24     var DOM = {};
  25     DOM.network = $(".network");
  26     DOM.bip32Client = $("#bip32-client");
  27     DOM.phraseNetwork = $("#network-phrase");
  28     DOM.useEntropy = $(".use-entropy");
  29     DOM.entropyContainer = $(".entropy-container");
  30     DOM.entropy = $(".entropy");
  31     DOM.entropyFiltered = DOM.entropyContainer.find(".filtered");
  32     DOM.entropyType = DOM.entropyContainer.find(".type");
  33     DOM.entropyCrackTime = DOM.entropyContainer.find(".crack-time");
  34     DOM.entropyEventCount = DOM.entropyContainer.find(".event-count");
  35     DOM.entropyBits = DOM.entropyContainer.find(".bits");
  36     DOM.entropyBitsPerEvent = DOM.entropyContainer.find(".bits-per-event");
  37     DOM.entropyWordCount = DOM.entropyContainer.find(".word-count");
  38     DOM.entropyBinary = DOM.entropyContainer.find(".binary");
  39     DOM.entropyMnemonicLength = DOM.entropyContainer.find(".mnemonic-length");
  40     DOM.phrase = $(".phrase");
  41     DOM.passphrase = $(".passphrase");
  42     DOM.generateContainer = $(".generate-container");
  43     DOM.generate = $(".generate");
  44     DOM.seed = $(".seed");
  45     DOM.rootKey = $(".root-key");
  46     DOM.extendedPrivKey = $(".extended-priv-key");
  47     DOM.extendedPubKey = $(".extended-pub-key");
  48     DOM.bip32tab = $("#bip32-tab");
  49     DOM.bip44tab = $("#bip44-tab");
  50     DOM.bip32panel = $("#bip32");
  51     DOM.bip44panel = $("#bip44");
  52     DOM.bip32path = $("#bip32-path");
  53     DOM.bip44path = $("#bip44-path");
  54     DOM.bip44purpose = $("#bip44 .purpose");
  55     DOM.bip44coin = $("#bip44 .coin");
  56     DOM.bip44account = $("#bip44 .account");
  57     DOM.bip44accountXprv = $("#bip44 .account-xprv");
  58     DOM.bip44accountXpub = $("#bip44 .account-xpub");
  59     DOM.bip44change = $("#bip44 .change");
  60     DOM.generatedStrength = $(".generate-container .strength");
  61     DOM.hardenedAddresses = $(".hardened-addresses");
  62     DOM.addresses = $(".addresses");
  63     DOM.rowsToAdd = $(".rows-to-add");
  64     DOM.more = $(".more");
  65     DOM.feedback = $(".feedback");
  66     DOM.tab = $(".derivation-type a");
  67     DOM.indexToggle = $(".index-toggle");
  68     DOM.addressToggle = $(".address-toggle");
  69     DOM.publicKeyToggle = $(".public-key-toggle");
  70     DOM.privateKeyToggle = $(".private-key-toggle");
  71     DOM.languages = $(".languages a");
  72     DOM.qrContainer = $(".qr-container");
  73     DOM.qrHider = DOM.qrContainer.find(".qr-hider");
  74     DOM.qrImage = DOM.qrContainer.find(".qr-image");
  75     DOM.qrHint = DOM.qrContainer.find(".qr-hint");
  76     DOM.showQrEls = $("[data-show-qr]");
  77
  78     function init() {
  79         // Events
  80         DOM.network.on("change", networkChanged);
  81         DOM.bip32Client.on("change", bip32ClientChanged);
  82         DOM.useEntropy.on("change", setEntropyVisibility);
  83         DOM.entropy.on("input", delayedEntropyChanged);
  84         DOM.entropyMnemonicLength.on("change", entropyChanged);
  85         DOM.phrase.on("input", delayedPhraseChanged);
  86         DOM.passphrase.on("input", delayedPhraseChanged);
  87         DOM.generate.on("click", generateClicked);
  88         DOM.more.on("click", showMore);
  89         DOM.rootKey.on("input", delayedRootKeyChanged);
  90         DOM.bip32path.on("input", calcForDerivationPath);
  91         DOM.bip44account.on("input", calcForDerivationPath);
  92         DOM.bip44change.on("input", calcForDerivationPath);
  93         DOM.tab.on("shown.bs.tab", calcForDerivationPath);
  94         DOM.hardenedAddresses.on("change", calcForDerivationPath);
  95         DOM.indexToggle.on("click", toggleIndexes);
  96         DOM.addressToggle.on("click", toggleAddresses);
  97         DOM.publicKeyToggle.on("click", togglePublicKeys);
  98         DOM.privateKeyToggle.on("click", togglePrivateKeys);
  99         DOM.languages.on("click", languageChanged);
 100         setQrEvents(DOM.showQrEls);
 101         disableForms();
 102         hidePending();
 103         hideValidationError();
 104         populateNetworkSelect();
 105         populateClientSelect();
 106     }
 107
 108     // Event handlers
 109
 110     function networkChanged(e) {
 111         var networkIndex = e.target.value;
 112         networks[networkIndex].onSelect();
 113         if (seed != null) {
 114             phraseChanged();
 115         }
 116         else {
 117             rootKeyChanged();
 118         }
 119     }
 120
 121     function bip32ClientChanged(e) {
 122         var clientIndex = DOM.bip32Client.val();
 123         if (clientIndex == "custom") {
 124             DOM.bip32path.prop("readonly", false);
 125         }
 126         else {
 127             DOM.bip32path.prop("readonly", true);
 128             clients[clientIndex].onSelect();
 129             if (seed != null) {
 130                 phraseChanged();
 131             }
 132             else {
 133                 rootKeyChanged();
 134             }
 135         }
 136     }
 137
 138     function setEntropyVisibility() {
 139         if (isUsingOwnEntropy()) {
 140             DOM.entropyContainer.removeClass("hidden");
 141             DOM.generateContainer.addClass("hidden");
 142             DOM.phrase.prop("readonly", true);
 143             DOM.entropy.focus();
 144             entropyChanged();
 145         }
 146         else {
 147             DOM.entropyContainer.addClass("hidden");
 148             DOM.generateContainer.removeClass("hidden");
 149             DOM.phrase.prop("readonly", false);
 150             hidePending();
 151         }
 152     }
 153
 154     function delayedPhraseChanged() {
 155         hideValidationError();
 156         showPending();
 157         if (phraseChangeTimeoutEvent != null) {
 158             clearTimeout(phraseChangeTimeoutEvent);
 159         }
 160         phraseChangeTimeoutEvent = setTimeout(phraseChanged, 400);
 161     }
 162
 163     function phraseChanged() {
 164         showPending();
 165         hideValidationError();
 166         setMnemonicLanguage();
 167         // Get the mnemonic phrase
 168         var phrase = DOM.phrase.val();
 169         var errorText = findPhraseErrors(phrase);
 170         if (errorText) {
 171             showValidationError(errorText);
 172             return;
 173         }
 174         // Calculate and display
 175         var passphrase = DOM.passphrase.val();
 176         calcBip32RootKeyFromSeed(phrase, passphrase);
 177         calcForDerivationPath();
 178         hidePending();
 179     }
 180
 181     function delayedEntropyChanged() {
 182         hideValidationError();
 183         showPending();
 184         if (entropyChangeTimeoutEvent != null) {
 185             clearTimeout(entropyChangeTimeoutEvent);
 186         }
 187         entropyChangeTimeoutEvent = setTimeout(entropyChanged, 400);
 188     }
 189
 190     function entropyChanged() {
 191         // If blank entropy, clear mnemonic, addresses, errors
 192         if (DOM.entropy.val().trim().length == 0) {
 193             clearDisplay();
 194             clearEntropyFeedback();
 195             DOM.phrase.val("");
 196             showValidationError("Blank entropy");
 197             return;
 198         }
 199         // Get the current phrase to detect changes
 200         var phrase = DOM.phrase.val();
 201         // Set the phrase from the entropy
 202         setMnemonicFromEntropy();
 203         // Recalc addresses if the phrase has changed
 204         var newPhrase = DOM.phrase.val();
 205         if (newPhrase != phrase) {
 206             if (newPhrase.length == 0) {
 207                 clearDisplay();
 208             }
 209             else {
 210                 phraseChanged();
 211             }
 212         }
 213         else {
 214             hidePending();
 215         }
 216     }
 217
 218     function delayedRootKeyChanged() {
 219         // Warn if there is an existing mnemonic or passphrase.
 220         if (DOM.phrase.val().length > 0 || DOM.passphrase.val().length > 0) {
 221             if (!confirm("This will clear existing mnemonic and passphrase")) {
 222                 DOM.rootKey.val(bip32RootKey);
 223                 return
 224             }
 225         }
 226         hideValidationError();
 227         showPending();
 228         // Clear existing mnemonic and passphrase
 229         DOM.phrase.val("");
 230         DOM.passphrase.val("");
 231         seed = null;
 232         if (rootKeyChangedTimeoutEvent != null) {
 233             clearTimeout(rootKeyChangedTimeoutEvent);
 234         }
 235         rootKeyChangedTimeoutEvent = setTimeout(rootKeyChanged, 400);
 236     }
 237
 238     function rootKeyChanged() {
 239         showPending();
 240         hideValidationError();
 241         // Validate the root key TODO
 242         var rootKeyBase58 = DOM.rootKey.val();
 243         var errorText = validateRootKey(rootKeyBase58);
 244         if (errorText) {
 245             showValidationError(errorText);
 246             return;
 247         }
 248         // Calculate and display
 249         calcBip32RootKeyFromBase58(rootKeyBase58);
 250         calcForDerivationPath();
 251     }
 252
 253     function calcForDerivationPath() {
 254         showPending();
 255         clearAddressesList();
 256         hideValidationError();
 257         // Get the derivation path
 258         var derivationPath = getDerivationPath();
 259         var errorText = findDerivationPathErrors(derivationPath);
 260         if (errorText) {
 261             showValidationError(errorText);
 262             return;
 263         }
 264         bip32ExtendedKey = calcBip32ExtendedKey(derivationPath);
 265         if (bip44TabSelected()) {
 266             displayBip44Info();
 267         }
 268         displayBip32Info();
 269         hidePending();
 270     }
 271
 272     function generateClicked() {
 273         if (isUsingOwnEntropy()) {
 274             return;
 275         }
 276         clearDisplay();
 277         showPending();
 278         setTimeout(function() {
 279             setMnemonicLanguage();
 280             var phrase = generateRandomPhrase();
 281             if (!phrase) {
 282                 return;
 283             }
 284             phraseChanged();
 285         }, 50);
 286     }
 287
 288     function languageChanged() {
 289         setTimeout(function() {
 290             setMnemonicLanguage();
 291             if (DOM.phrase.val().length > 0) {
 292                 var newPhrase = convertPhraseToNewLanguage();
 293                 DOM.phrase.val(newPhrase);
 294                 phraseChanged();
 295             }
 296             else {
 297                 DOM.generate.trigger("click");
 298             }
 299         }, 50);
 300     }
 301
 302     function toggleIndexes() {
 303         showIndex = !showIndex;
 304         $("td.index span").toggleClass("invisible");
 305     }
 306
 307     function toggleAddresses() {
 308         showAddress = !showAddress;
 309         $("td.address span").toggleClass("invisible");
 310     }
 311
 312     function togglePublicKeys() {
 313         showPubKey = !showPubKey;
 314         $("td.pubkey span").toggleClass("invisible");
 315     }
 316
 317     function togglePrivateKeys() {
 318         showPrivKey = !showPrivKey;
 319         $("td.privkey span").toggleClass("invisible");
 320     }
 321
 322     // Private methods
 323
 324     function generateRandomPhrase() {
 325         if (!hasStrongRandom()) {
 326             var errorText = "This browser does not support strong randomness";
 327             showValidationError(errorText);
 328             return;
 329         }
 330         var numWords = parseInt(DOM.generatedStrength.val());
 331         var strength = numWords / 3 * 32;
 332         var words = mnemonic.generate(strength);
 333         DOM.phrase.val(words);
 334         return words;
 335     }
 336
 337     function calcBip32RootKeyFromSeed(phrase, passphrase) {
 338         seed = mnemonic.toSeed(phrase, passphrase);
 339         bip32RootKey = bitcoinjs.bitcoin.HDNode.fromSeedHex(seed, network);
 340     }
 341
 342     function calcBip32RootKeyFromBase58(rootKeyBase58) {
 343         bip32RootKey = bitcoinjs.bitcoin.HDNode.fromBase58(rootKeyBase58, network);
 344     }
 345
 346     function calcBip32ExtendedKey(path) {
 347         // Check there's a root key to derive from
 348         if (!bip32RootKey) {
 349             return bip32RootKey;
 350         }
 351         var extendedKey = bip32RootKey;
 352         // Derive the key from the path
 353         var pathBits = path.split("/");
 354         for (var i=0; i<pathBits.length; i++) {
 355             var bit = pathBits[i];
 356             var index = parseInt(bit);
 357             if (isNaN(index)) {
 358                 continue;
 359             }
 360             var hardened = bit[bit.length-1] == "'";
 361             var isPriv = !(extendedKey.isNeutered());
 362             var invalidDerivationPath = hardened && !isPriv;
 363             if (invalidDerivationPath) {
 364                 extendedKey = null;
 365             }
 366             else if (hardened) {
 367                 extendedKey = extendedKey.deriveHardened(index);
 368             }
 369             else {
 370                 extendedKey = extendedKey.derive(index);
 371             }
 372         }
 373         return extendedKey
 374     }
 375
 376     function showValidationError(errorText) {
 377         DOM.feedback
 378             .text(errorText)
 379             .show();
 380     }
 381
 382     function hideValidationError() {
 383         DOM.feedback
 384             .text("")
 385             .hide();
 386     }
 387
 388     function findPhraseErrors(phrase) {
 389         // Preprocess the words
 390         phrase = mnemonic.normalizeString(phrase);
 391         var words = phraseToWordArray(phrase);
 392         // Detect blank phrase
 393         if (words.length == 0) {
 394             return "Blank mnemonic";
 395         }
 396         // Check each word
 397         for (var i=0; i<words.length; i++) {
 398             var word = words[i];
 399             var language = getLanguage();
 400             if (WORDLISTS[language].indexOf(word) == -1) {
 401                 console.log("Finding closest match to " + word);
 402                 var nearestWord = findNearestWord(word);
 403                 return word + " not in wordlist, did you mean " + nearestWord + "?";
 404             }
 405         }
 406         // Check the words are valid
 407         var properPhrase = wordArrayToPhrase(words);
 408         var isValid = mnemonic.check(properPhrase);
 409         if (!isValid) {
 410             return "Invalid mnemonic";
 411         }
 412         return false;
 413     }
 414
 415     function validateRootKey(rootKeyBase58) {
 416         try {
 417             bitcoinjs.bitcoin.HDNode.fromBase58(rootKeyBase58);
 418         }
 419         catch (e) {
 420             return "Invalid root key";
 421         }
 422         return "";
 423     }
 424
 425     function getDerivationPath() {
 426         if (bip44TabSelected()) {
 427             var purpose = parseIntNoNaN(DOM.bip44purpose.val(), 44);
 428             var coin = parseIntNoNaN(DOM.bip44coin.val(), 0);
 429             var account = parseIntNoNaN(DOM.bip44account.val(), 0);
 430             var change = parseIntNoNaN(DOM.bip44change.val(), 0);
 431             var path = "m/";
 432             path += purpose + "'/";
 433             path += coin + "'/";
 434             path += account + "'/";
 435             path += change;
 436             DOM.bip44path.val(path);
 437             var derivationPath = DOM.bip44path.val();
 438             console.log("Using derivation path from BIP44 tab: " + derivationPath);
 439             return derivationPath;
 440         }
 441         else if (bip32TabSelected()) {
 442             var derivationPath = DOM.bip32path.val();
 443             console.log("Using derivation path from BIP32 tab: " + derivationPath);
 444             return derivationPath;
 445         }
 446         else {
 447             console.log("Unknown derivation path");
 448         }
 449     }
 450
 451     function findDerivationPathErrors(path) {
 452         // TODO is not perfect but is better than nothing
 453         // Inspired by
 454         // https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#test-vectors
 455         // and
 456         // https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#extended-keys
 457         var maxDepth = 255; // TODO verify this!!
 458         var maxIndexValue = Math.pow(2, 31); // TODO verify this!!
 459         if (path[0] != "m") {
 460             return "First character must be 'm'";
 461         }
 462         if (path.length > 1) {
 463             if (path[1] != "/") {
 464                 return "Separator must be '/'";
 465             }
 466             var indexes = path.split("/");
 467             if (indexes.length > maxDepth) {
 468                 return "Derivation depth is " + indexes.length + ", must be less than " + maxDepth;
 469             }
 470             for (var depth = 1; depth<indexes.length; depth++) {
 471                 var index = indexes[depth];
 472                 var invalidChars = index.replace(/^[0-9]+'?$/g, "")
 473                 if (invalidChars.length > 0) {
 474                     return "Invalid characters " + invalidChars + " found at depth " + depth;
 475                 }
 476                 var indexValue = parseInt(index.replace("'", ""));
 477                 if (isNaN(depth)) {
 478                     return "Invalid number at depth " + depth;
 479                 }
 480                 if (indexValue > maxIndexValue) {
 481                     return "Value of " + indexValue + " at depth " + depth + " must be less than " + maxIndexValue;
 482                 }
 483             }
 484         }
 485         // Check root key exists or else derivation path is useless!
 486         if (!bip32RootKey) {
 487             return "No root key";
 488         }
 489         // Check no hardened derivation path when using xpub keys
 490         var hardened = path.indexOf("'") > -1;
 491         var isXpubkey = bip32RootKey.isNeutered();
 492         if (hardened && isXpubkey) {
 493             return "Hardened derivation path is invalid with xpub key";
 494         }
 495         return false;
 496     }
 497
 498     function displayBip44Info() {
 499         // Get the derivation path for the account
 500         var purpose = parseIntNoNaN(DOM.bip44purpose.val(), 44);
 501         var coin = parseIntNoNaN(DOM.bip44coin.val(), 0);
 502         var account = parseIntNoNaN(DOM.bip44account.val(), 0);
 503         var path = "m/";
 504         path += purpose + "'/";
 505         path += coin + "'/";
 506         path += account + "'/";
 507         // Calculate the account extended keys
 508         var accountExtendedKey = calcBip32ExtendedKey(path);
 509         var accountXprv = accountExtendedKey.toBase58();
 510         var accountXpub = accountExtendedKey.neutered().toBase58();
 511         // Display the extended keys
 512         DOM.bip44accountXprv.val(accountXprv);
 513         DOM.bip44accountXpub.val(accountXpub);
 514     }
 515
 516     function displayBip32Info() {
 517         // Display the key
 518         DOM.seed.val(seed);
 519         var rootKey = bip32RootKey.toBase58();
 520         DOM.rootKey.val(rootKey);
 521         var xprvkeyB58 = "NA";
 522         if (!bip32ExtendedKey.isNeutered()) {
 523             xprvkeyB58 = bip32ExtendedKey.toBase58();
 524         }
 525         var extendedPrivKey = xprvkeyB58;
 526         DOM.extendedPrivKey.val(extendedPrivKey);
 527         var extendedPubKey = bip32ExtendedKey.neutered().toBase58();
 528         DOM.extendedPubKey.val(extendedPubKey);
 529         // Display the addresses and privkeys
 530         clearAddressesList();
 531         displayAddresses(0, 20);
 532     }
 533
 534     function displayAddresses(start, total) {
 535         generationProcesses.push(new (function() {
 536
 537             var rows = [];
 538
 539             this.stop = function() {
 540                 for (var i=0; i<rows.length; i++) {
 541                     rows[i].shouldGenerate = false;
 542                 }
 543             }
 544
 545             for (var i=0; i<total; i++) {
 546                 var index = i + start;
 547                 rows.push(new TableRow(index));
 548             }
 549
 550         })());
 551     }
 552
 553     function TableRow(index) {
 554
 555         var self = this;
 556         this.shouldGenerate = true;
 557         var useHardenedAddresses = DOM.hardenedAddresses.prop("checked");
 558
 559         function init() {
 560             calculateValues();
 561         }
 562
 563         function calculateValues() {
 564             setTimeout(function() {
 565                 if (!self.shouldGenerate) {
 566                     return;
 567                 }
 568                 var key = "NA";
 569                 if (useHardenedAddresses) {
 570                     key = bip32ExtendedKey.deriveHardened(index);
 571                 }
 572                 else {
 573                     key = bip32ExtendedKey.derive(index);
 574                 }
 575                 var address = key.getAddress().toString();
 576                 var privkey = "NA";
 577                 if (!key.isNeutered()) {
 578                     privkey = key.keyPair.toWIF(network);
 579                 }
 580                 var pubkey = key.getPublicKeyBuffer().toString('hex');
 581                 var indexText = getDerivationPath() + "/" + index;
 582                 if (useHardenedAddresses) {
 583                     indexText = indexText + "'";
 584                 }
 585                 // Ethereum values are different
 586                 if (networks[DOM.network.val()].name == "ETH - Ethereum") {
 587                     var privKeyBuffer = key.keyPair.d.toBuffer();
 588                     privkey = privKeyBuffer.toString('hex');
 589                     var addressBuffer = ethUtil.privateToAddress(privKeyBuffer);
 590                     var hexAddress = addressBuffer.toString('hex');
 591                     var checksumAddress = ethUtil.toChecksumAddress(hexAddress);
 592                     address = ethUtil.addHexPrefix(checksumAddress);
 593                     privkey = ethUtil.addHexPrefix(privkey);
 594                     pubkey = ethUtil.addHexPrefix(pubkey);
 595                 }
 596                 // Ripple values are different
 597                 if (networks[DOM.network.val()].name == "XRP - Ripple") {
 598                     privkey = convertRipplePriv(privkey);
 599                     address = convertRippleAdrr(address);
 600                 }
 601                 addAddressToList(indexText, address, pubkey, privkey);
 602             }, 50)
 603         }
 604
 605         init();
 606
 607     }
 608
 609     function showMore() {
 610         var start = DOM.addresses.children().length;
 611         var rowsToAdd = parseInt(DOM.rowsToAdd.val());
 612         if (isNaN(rowsToAdd)) {
 613             rowsToAdd = 20;
 614             DOM.rowsToAdd.val("20");
 615         }
 616         if (rowsToAdd > 200) {
 617             var msg = "Generating " + rowsToAdd + " rows could take a while. ";
 618             msg += "Do you want to continue?";
 619             if (!confirm(msg)) {
 620                 return;
 621             }
 622         }
 623         displayAddresses(start, rowsToAdd);
 624     }
 625
 626     function clearDisplay() {
 627         clearAddressesList();
 628         clearKey();
 629         hideValidationError();
 630     }
 631
 632     function clearAddressesList() {
 633         DOM.addresses.empty();
 634         stopGenerating();
 635     }
 636
 637     function stopGenerating() {
 638         while (generationProcesses.length > 0) {
 639             var generation = generationProcesses.shift();
 640             generation.stop();
 641         }
 642     }
 643
 644     function clearKey() {
 645         DOM.rootKey.val("");
 646         DOM.extendedPrivKey.val("");
 647         DOM.extendedPubKey.val("");
 648     }
 649
 650     function addAddressToList(indexText, address, pubkey, privkey) {
 651         var row = $(addressRowTemplate.html());
 652         // Elements
 653         var indexCell = row.find(".index span");
 654         var addressCell = row.find(".address span");
 655         var pubkeyCell = row.find(".pubkey span");
 656         var privkeyCell = row.find(".privkey span");
 657         // Content
 658         indexCell.text(indexText);
 659         addressCell.text(address);
 660         pubkeyCell.text(pubkey);
 661         privkeyCell.text(privkey);
 662         // Visibility
 663         if (!showIndex) {
 664             indexCell.addClass("invisible");
 665         }
 666         if (!showAddress) {
 667             addressCell.addClass("invisible");
 668         }
 669         if (!showPubKey) {
 670             pubkeyCell.addClass("invisible");
 671         }
 672         if (!showPrivKey) {
 673             privkeyCell.addClass("invisible");
 674         }
 675         DOM.addresses.append(row);
 676         var rowShowQrEls = row.find("[data-show-qr]");
 677         setQrEvents(rowShowQrEls);
 678     }
 679
 680     function hasStrongRandom() {
 681         return 'crypto' in window && window['crypto'] !== null;
 682     }
 683
 684     function disableForms() {
 685         $("form").on("submit", function(e) {
 686             e.preventDefault();
 687         });
 688     }
 689
 690     function parseIntNoNaN(val, defaultVal) {
 691         var v = parseInt(val);
 692         if (isNaN(v)) {
 693             return defaultVal;
 694         }
 695         return v;
 696     }
 697
 698     function showPending() {
 699         DOM.feedback
 700             .text("Calculating...")
 701             .show();
 702     }
 703
 704     function findNearestWord(word) {
 705         var language = getLanguage();
 706         var words = WORDLISTS[language];
 707         var minDistance = 99;
 708         var closestWord = words[0];
 709         for (var i=0; i<words.length; i++) {
 710             var comparedTo = words[i];
 711             if (comparedTo.indexOf(word) == 0) {
 712                 return comparedTo;
 713             }
 714             var distance = Levenshtein.get(word, comparedTo);
 715             if (distance < minDistance) {
 716                 closestWord = comparedTo;
 717                 minDistance = distance;
 718             }
 719         }
 720         return closestWord;
 721     }
 722
 723     function hidePending() {
 724         DOM.feedback
 725             .text("")
 726             .hide();
 727     }
 728
 729     function populateNetworkSelect() {
 730         for (var i=0; i<networks.length; i++) {
 731             var network = networks[i];
 732             var option = $("<option>");
 733             option.attr("value", i);
 734             option.text(network.name);
 735             DOM.phraseNetwork.append(option);
 736         }
 737     }
 738
 739     function populateClientSelect() {
 740         for (var i=0; i<clients.length; i++) {
 741             var client = clients[i];
 742             var option = $("<option>");
 743             option.attr("value", i);
 744             option.text(client.name);
 745             DOM.bip32Client.append(option);
 746         }
 747     }
 748
 749     function getLanguage() {
 750         var defaultLanguage = "english";
 751         // Try to get from existing phrase
 752         var language = getLanguageFromPhrase();
 753         // Try to get from url if not from phrase
 754         if (language.length == 0) {
 755             language = getLanguageFromUrl();
 756         }
 757         // Default to English if no other option
 758         if (language.length == 0) {
 759             language = defaultLanguage;
 760         }
 761         return language;
 762     }
 763
 764     function getLanguageFromPhrase(phrase) {
 765         // Check if how many words from existing phrase match a language.
 766         var language = "";
 767         if (!phrase) {
 768             phrase = DOM.phrase.val();
 769         }
 770         if (phrase.length > 0) {
 771             var words = phraseToWordArray(phrase);
 772             var languageMatches = {};
 773             for (l in WORDLISTS) {
 774                 // Track how many words match in this language
 775                 languageMatches[l] = 0;
 776                 for (var i=0; i<words.length; i++) {
 777                     var wordInLanguage = WORDLISTS[l].indexOf(words[i]) > -1;
 778                     if (wordInLanguage) {
 779                         languageMatches[l]++;
 780                     }
 781                 }
 782                 // Find languages with most word matches.
 783                 // This is made difficult due to commonalities between Chinese
 784                 // simplified vs traditional.
 785                 var mostMatches = 0;
 786                 var mostMatchedLanguages = [];
 787                 for (var l in languageMatches) {
 788                     var numMatches = languageMatches[l];
 789                     if (numMatches > mostMatches) {
 790                         mostMatches = numMatches;
 791                         mostMatchedLanguages = [l];
 792                     }
 793                     else if (numMatches == mostMatches) {
 794                         mostMatchedLanguages.push(l);
 795                     }
 796                 }
 797             }
 798             if (mostMatchedLanguages.length > 0) {
 799                 // Use first language and warn if multiple detected
 800                 language = mostMatchedLanguages[0];
 801                 if (mostMatchedLanguages.length > 1) {
 802                     console.warn("Multiple possible languages");
 803                     console.warn(mostMatchedLanguages);
 804                 }
 805             }
 806         }
 807         return language;
 808     }
 809
 810     function getLanguageFromUrl() {
 811         for (var language in WORDLISTS) {
 812             if (window.location.hash.indexOf(language) > -1) {
 813                 return language;
 814             }
 815         }
 816         return "";
 817     }
 818
 819     function setMnemonicLanguage() {
 820         var language = getLanguage();
 821         // Load the bip39 mnemonic generator for this language if required
 822         if (!(language in mnemonics)) {
 823             mnemonics[language] = new Mnemonic(language);
 824         }
 825         mnemonic = mnemonics[language];
 826     }
 827
 828     function convertPhraseToNewLanguage() {
 829         var oldLanguage = getLanguageFromPhrase();
 830         var newLanguage = getLanguageFromUrl();
 831         var oldPhrase = DOM.phrase.val();
 832         var oldWords = phraseToWordArray(oldPhrase);
 833         var newWords = [];
 834         for (var i=0; i<oldWords.length; i++) {
 835             var oldWord = oldWords[i];
 836             var index = WORDLISTS[oldLanguage].indexOf(oldWord);
 837             var newWord = WORDLISTS[newLanguage][index];
 838             newWords.push(newWord);
 839         }
 840         newPhrase = wordArrayToPhrase(newWords);
 841         return newPhrase;
 842     }
 843
 844     // TODO look at jsbip39 - mnemonic.splitWords
 845     function phraseToWordArray(phrase) {
 846         var words = phrase.split(/\s/g);
 847         var noBlanks = [];
 848         for (var i=0; i<words.length; i++) {
 849             var word = words[i];
 850             if (word.length > 0) {
 851                 noBlanks.push(word);
 852             }
 853         }
 854         return noBlanks;
 855     }
 856
 857     // TODO look at jsbip39 - mnemonic.joinWords
 858     function wordArrayToPhrase(words) {
 859         var phrase = words.join(" ");
 860         var language = getLanguageFromPhrase(phrase);
 861         if (language == "japanese") {
 862             phrase = words.join("\u3000");
 863         }
 864         return phrase;
 865     }
 866
 867     function isUsingOwnEntropy() {
 868         return DOM.useEntropy.prop("checked");
 869     }
 870
 871     function setMnemonicFromEntropy() {
 872         clearEntropyFeedback();
 873         // Get entropy value
 874         var entropyStr = DOM.entropy.val();
 875         // Work out minimum base for entropy
 876         var entropy = Entropy.fromString(entropyStr);
 877         if (entropy.binaryStr.length == 0) {
 878             return;
 879         }
 880         // Show entropy details
 881         showEntropyFeedback(entropy);
 882         // Use entropy hash if not using raw entropy
 883         var bits = entropy.binaryStr;
 884         var mnemonicLength = DOM.entropyMnemonicLength.val();
 885         if (mnemonicLength != "raw") {
 886             // Get bits by hashing entropy with SHA256
 887             var hash = sjcl.hash.sha256.hash(entropy.cleanStr);
 888             var hex = sjcl.codec.hex.fromBits(hash);
 889             bits = BigInteger.parse(hex, 16).toString(2);
 890             while (bits.length % 256 != 0) {
 891                 bits = "0" + bits;
 892             }
 893             // Truncate hash to suit number of words
 894             mnemonicLength = parseInt(mnemonicLength);
 895             var numberOfBits = 32 * mnemonicLength / 3;
 896             bits = bits.substring(0, numberOfBits);
 897         }
 898         // Discard trailing entropy
 899         var bitsToUse = Math.floor(bits.length / 32) * 32;
 900         var start = bits.length - bitsToUse;
 901         var binaryStr = bits.substring(start);
 902         // Convert entropy string to numeric array
 903         var entropyArr = [];
 904         for (var i=0; i<binaryStr.length / 8; i++) {
 905             var byteAsBits = binaryStr.substring(i*8, i*8+8);
 906             var entropyByte = parseInt(byteAsBits, 2);
 907             entropyArr.push(entropyByte)
 908         }
 909         // Convert entropy array to mnemonic
 910         var phrase = mnemonic.toMnemonic(entropyArr);
 911         // Set the mnemonic in the UI
 912         DOM.phrase.val(phrase);
 913     }
 914
 915     function clearEntropyFeedback() {
 916         DOM.entropyCrackTime.text("...");
 917         DOM.entropyType.text("");
 918         DOM.entropyWordCount.text("0");
 919         DOM.entropyEventCount.text("0");
 920         DOM.entropyBitsPerEvent.text("0");
 921         DOM.entropyBits.text("0");
 922         DOM.entropyFiltered.html("&nbsp;");
 923         DOM.entropyBinary.html("&nbsp;");
 924     }
 925
 926     function showEntropyFeedback(entropy) {
 927         var numberOfBits = entropy.binaryStr.length;
 928         var timeToCrack = "unknown";
 929         try {
 930             var z = zxcvbn(entropy.base.parts.join(""));
 931             timeToCrack = z.crack_times_display.offline_fast_hashing_1e10_per_second;
 932             if (z.feedback.warning != "") {
 933                 timeToCrack = timeToCrack + " - " + z.feedback.warning;
 934             };
 935         }
 936         catch (e) {
 937             console.log("Error detecting entropy strength with zxcvbn:");
 938             console.log(e);
 939         }
 940         var entropyTypeStr = getEntropyTypeStr(entropy);
 941         var wordCount = Math.floor(numberOfBits / 32) * 3;
 942         var bitsPerEvent = entropy.bitsPerEvent.toFixed(2);
 943         DOM.entropyFiltered.html(entropy.cleanHtml);
 944         DOM.entropyType.text(entropyTypeStr);
 945         DOM.entropyCrackTime.text(timeToCrack);
 946         DOM.entropyEventCount.text(entropy.base.ints.length);
 947         DOM.entropyBits.text(numberOfBits);
 948         DOM.entropyWordCount.text(wordCount);
 949         DOM.entropyBinary.text(entropy.binaryStr);
 950         DOM.entropyBitsPerEvent.text(bitsPerEvent);
 951     }
 952
 953     function getEntropyTypeStr(entropy) {
 954         var typeStr = entropy.base.str;
 955         // Add some detail if these are cards
 956         if (entropy.base.asInt == 52) {
 957             var cardDetail = []; // array of message strings
 958             // Detect duplicates
 959             var dupes = [];
 960             var dupeTracker = {};
 961             for (var i=0; i<entropy.base.parts.length; i++) {
 962                 var card = entropy.base.parts[i];
 963                 var cardUpper = card.toUpperCase();
 964                 if (cardUpper in dupeTracker) {
 965                     dupes.push(card);
 966                 }
 967                 dupeTracker[cardUpper] = true;
 968             }
 969             if (dupes.length > 0) {
 970                 var dupeWord = "duplicates";
 971                 if (dupes.length == 1) {
 972                     dupeWord = "duplicate";
 973                 }
 974                 var msg = dupes.length + " " + dupeWord + ": " + dupes.slice(0,3).join(" ");
 975                 if (dupes.length > 3) {
 976                     msg += "...";
 977                 }
 978                 cardDetail.push(msg);
 979             }
 980             // Detect full deck
 981             var uniqueCards = [];
 982             for (var uniqueCard in dupeTracker) {
 983                 uniqueCards.push(uniqueCard);
 984             }
 985             if (uniqueCards.length == 52) {
 986                 cardDetail.unshift("full deck");
 987             }
 988             // Detect missing cards
 989             var values = "A23456789TJQK";
 990             var suits = "CDHS";
 991             var missingCards = [];
 992             for (var i=0; i<suits.length; i++) {
 993                 for (var j=0; j<values.length; j++) {
 994                     var card = values[j] + suits[i];
 995                     if (!(card in dupeTracker)) {
 996                         missingCards.push(card);
 997                     }
 998                 }
 999             }
1000             // Display missing cards if six or less, ie clearly going for full deck
1001             if (missingCards.length > 0 && missingCards.length <= 6) {
1002                 var msg = missingCards.length + " missing: " + missingCards.slice(0,3).join(" ");
1003                 if (missingCards.length > 3) {
1004                     msg += "...";
1005                 }
1006                 cardDetail.push(msg);
1007             }
1008             // Add card details to typeStr
1009             if (cardDetail.length > 0) {
1010                 typeStr += " (" + cardDetail.join(", ") + ")";
1011             }
1012         }
1013         return typeStr;
1014     }
1015
1016     function setQrEvents(els) {
1017         els.on("mouseenter", createQr);
1018         els.on("mouseleave", destroyQr);
1019         els.on("click", toggleQr);
1020     }
1021
1022     function createQr(e) {
1023         var content = e.target.textContent || e.target.value;
1024         if (content) {
1025             var size = 130;
1026             DOM.qrImage.qrcode({width: size, height: size, text: content});
1027             if (!showQr) {
1028                 DOM.qrHider.addClass("hidden");
1029             }
1030             else {
1031                 DOM.qrHider.removeClass("hidden");
1032             }
1033             DOM.qrContainer.removeClass("hidden");
1034         }
1035     }
1036
1037     function destroyQr() {
1038         DOM.qrImage.text("");
1039         DOM.qrContainer.addClass("hidden");
1040     }
1041
1042     function toggleQr() {
1043         showQr = !showQr;
1044         DOM.qrHider.toggleClass("hidden");
1045         DOM.qrHint.toggleClass("hidden");
1046     }
1047
1048     function bip44TabSelected() {
1049         return DOM.bip44tab.hasClass("active");
1050     }
1051
1052     function bip32TabSelected() {
1053         return DOM.bip32tab.hasClass("active");
1054     }
1055
1056     var networks = [
1057         {
1058             name: "BTC - Bitcoin",
1059             onSelect: function() {
1060                 network = bitcoinjs.bitcoin.networks.bitcoin;
1061                 DOM.bip44coin.val(0);
1062             },
1063         },
1064         {
1065             name: "BTC - Bitcoin Testnet",
1066             onSelect: function() {
1067                 network = bitcoinjs.bitcoin.networks.testnet;
1068                 DOM.bip44coin.val(1);
1069             },
1070         },
1071         {
1072             name: "CLAM - Clams",
1073             onSelect: function() {
1074                 network = bitcoinjs.bitcoin.networks.clam;
1075                 DOM.bip44coin.val(23);
1076             },
1077         },
1078         {
1079             name: "CRW - Crown",
1080             onSelect: function() {
1081                 network = bitcoin.networks.crown;
1082                 DOM.bip44coin.val(72);
1083             },
1084         },
1085         {
1086             name: "DASH - Dash",
1087             onSelect: function() {
1088                 network = bitcoinjs.bitcoin.networks.dash;
1089                 DOM.bip44coin.val(5);
1090             },
1091         },
1092         {
1093             name: "DASH - Dash Testnet",
1094             onSelect: function() {
1095                 network = bitcoinjs.bitcoin.networks.dashtn;
1096                 DOM.bip44coin.val(1);
1097             },
1098         },
1099         {
1100             name: "DOGE - Dogecoin",
1101             onSelect: function() {
1102                 network = bitcoin.networks.dogecoin;
1103                 DOM.bip44coin.val(3);
1104             },
1105         },
1106         {
1107             name: "ETH - Ethereum",
1108             onSelect: function() {
1109                 network = bitcoinjs.bitcoin.networks.bitcoin;
1110                 DOM.bip44coin.val(60);
1111             },
1112         },
1113         {
1114             name: "GAME - GameCredits",
1115             onSelect: function() {
1116                 network = bitcoinjs.bitcoin.networks.game;
1117                 DOM.bip44coin.val(101);
1118             },
1119         },
1120         {
1121             name: "JBS - Jumbucks",
1122             onSelect: function() {
1123                 network = bitcoinjs.bitcoin.networks.jumbucks;
1124                 DOM.bip44coin.val(26);
1125             },
1126         },
1127         {
1128             name: "LTC - Litecoin",
1129             onSelect: function() {
1130                 network = bitcoinjs.bitcoin.networks.litecoin;
1131                 DOM.bip44coin.val(2);
1132             },
1133         },
1134         {
1135             name: "NMC - Namecoin",
1136             onSelect: function() {
1137                 network = bitcoinjs.bitcoin.networks.namecoin;
1138                 DOM.bip44coin.val(7);
1139             },
1140         },
1141         {
1142             name: "PPC - Peercoin",
1143             onSelect: function() {
1144                 network = bitcoinjs.bitcoin.networks.peercoin;
1145                 DOM.bip44coin.val(6);
1146             },
1147         },
1148         {
1149             name: "SDC - ShadowCash",
1150             onSelect: function() {
1151                 network = bitcoinjs.bitcoin.networks.shadow;
1152                 DOM.bip44coin.val(35);
1153             },
1154         },
1155         {
1156             name: "SDC - ShadowCash Testnet",
1157             onSelect: function() {
1158                 network = bitcoinjs.bitcoin.networks.shadowtn;
1159                 DOM.bip44coin.val(1);
1160             },
1161         },
1162         {
1163             name: "SLM - Slimcoin",
1164             onSelect: function() {
1165                 network = bitcoinjs.bitcoin.networks.slimcoin;
1166                 DOM.bip44coin.val(63);
1167             },
1168         },
1169         {
1170             name: "SLM - Slimcoin Testnet",
1171             onSelect: function() {
1172                 network = bitcoinjs.bitcoin.networks.slimcointn;
1173                 DOM.bip44coin.val(111);
1174             },
1175         },
1176         {
1177             name: "VIA - Viacoin",
1178             onSelect: function() {
1179                 network = bitcoinjs.bitcoin.networks.viacoin;
1180                 DOM.bip44coin.val(14);
1181             },
1182         },
1183         {
1184             name: "VIA - Viacoin Testnet",
1185             onSelect: function() {
1186                 network = bitcoinjs.bitcoin.networks.viacointestnet;
1187                 DOM.bip44coin.val(1);
1188             },
1189         },
1190         {
1191             name: "XRP - Ripple",
1192             onSelect: function() {
1193                 network = bitcoin.networks.bitcoin;
1194                 DOM.bip44coin.val(144);
1195             },
1196         }
1197     ]
1198
1199     var clients = [
1200         {
1201             name: "Bitcoin Core",
1202             onSelect: function() {
1203                 DOM.bip32path.val("m/0'/0'");
1204                 DOM.hardenedAddresses.prop('checked', true);
1205             },
1206         },
1207         {
1208             name: "blockchain.info",
1209             onSelect: function() {
1210                 DOM.bip32path.val("m/44'/0'/0'");
1211                 DOM.hardenedAddresses.prop('checked', false);
1212             },
1213         },
1214         {
1215             name: "MultiBit HD",
1216             onSelect: function() {
1217                 DOM.bip32path.val("m/0'/0");
1218                 DOM.hardenedAddresses.prop('checked', false);
1219             },
1220         }
1221     ]
1222
1223     init();
1224
1225 })();