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 = 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.entropyStrength = DOM.entropyContainer.find(".strength");
  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.bip44purpose.on("input", calcForDerivationPath);
  92         DOM.bip44coin.on("input", calcForDerivationPath);
  93         DOM.bip44account.on("input", calcForDerivationPath);
  94         DOM.bip44change.on("input", calcForDerivationPath);
  95         DOM.tab.on("shown.bs.tab", calcForDerivationPath);
  96         DOM.hardenedAddresses.on("change", calcForDerivationPath);
  97         DOM.indexToggle.on("click", toggleIndexes);
  98         DOM.addressToggle.on("click", toggleAddresses);
  99         DOM.publicKeyToggle.on("click", togglePublicKeys);
 100         DOM.privateKeyToggle.on("click", togglePrivateKeys);
 101         DOM.languages.on("click", languageChanged);
 102         setQrEvents(DOM.showQrEls);
 103         disableForms();
 104         hidePending();
 105         hideValidationError();
 106         populateNetworkSelect();
 107         populateClientSelect();
 108     }
 109
 110     // Event handlers
 111
 112     function networkChanged(e) {
 113         var networkIndex = e.target.value;
 114         networks[networkIndex].onSelect();
 115         if (seed != null) {
 116             phraseChanged();
 117         }
 118         else {
 119             rootKeyChanged();
 120         }
 121     }
 122
 123     function bip32ClientChanged(e) {
 124         var clientIndex = DOM.bip32Client.val();
 125         if (clientIndex == "custom") {
 126             DOM.bip32path.prop("readonly", false);
 127         }
 128         else {
 129             DOM.bip32path.prop("readonly", true);
 130             clients[clientIndex].onSelect();
 131             if (seed != null) {
 132                 phraseChanged();
 133             }
 134             else {
 135                 rootKeyChanged();
 136             }
 137         }
 138     }
 139
 140     function setEntropyVisibility() {
 141         if (isUsingOwnEntropy()) {
 142             DOM.entropyContainer.removeClass("hidden");
 143             DOM.generateContainer.addClass("hidden");
 144             DOM.phrase.prop("readonly", true);
 145             DOM.entropy.focus();
 146             entropyChanged();
 147         }
 148         else {
 149             DOM.entropyContainer.addClass("hidden");
 150             DOM.generateContainer.removeClass("hidden");
 151             DOM.phrase.prop("readonly", false);
 152             hidePending();
 153         }
 154     }
 155
 156     function delayedPhraseChanged() {
 157         hideValidationError();
 158         showPending();
 159         if (phraseChangeTimeoutEvent != null) {
 160             clearTimeout(phraseChangeTimeoutEvent);
 161         }
 162         phraseChangeTimeoutEvent = setTimeout(phraseChanged, 400);
 163     }
 164
 165     function phraseChanged() {
 166         showPending();
 167         hideValidationError();
 168         setMnemonicLanguage();
 169         // Get the mnemonic phrase
 170         var phrase = DOM.phrase.val();
 171         var errorText = findPhraseErrors(phrase);
 172         if (errorText) {
 173             showValidationError(errorText);
 174             return;
 175         }
 176         // Calculate and display
 177         var passphrase = DOM.passphrase.val();
 178         calcBip32RootKeyFromSeed(phrase, passphrase);
 179         calcForDerivationPath();
 180         hidePending();
 181     }
 182
 183     function delayedEntropyChanged() {
 184         hideValidationError();
 185         showPending();
 186         if (entropyChangeTimeoutEvent != null) {
 187             clearTimeout(entropyChangeTimeoutEvent);
 188         }
 189         entropyChangeTimeoutEvent = setTimeout(entropyChanged, 400);
 190     }
 191
 192     function entropyChanged() {
 193         // If blank entropy, clear mnemonic, addresses, errors
 194         if (DOM.entropy.val().trim().length == 0) {
 195             clearDisplay();
 196             clearEntropyFeedback();
 197             DOM.phrase.val("");
 198             showValidationError("Blank entropy");
 199             return;
 200         }
 201         // Get the current phrase to detect changes
 202         var phrase = DOM.phrase.val();
 203         // Set the phrase from the entropy
 204         setMnemonicFromEntropy();
 205         // Recalc addresses if the phrase has changed
 206         var newPhrase = DOM.phrase.val();
 207         if (newPhrase != phrase) {
 208             if (newPhrase.length == 0) {
 209                 clearDisplay();
 210             }
 211             else {
 212                 phraseChanged();
 213             }
 214         }
 215         else {
 216             hidePending();
 217         }
 218     }
 219
 220     function delayedRootKeyChanged() {
 221         // Warn if there is an existing mnemonic or passphrase.
 222         if (DOM.phrase.val().length > 0 || DOM.passphrase.val().length > 0) {
 223             if (!confirm("This will clear existing mnemonic and passphrase")) {
 224                 DOM.rootKey.val(bip32RootKey);
 225                 return
 226             }
 227         }
 228         hideValidationError();
 229         showPending();
 230         // Clear existing mnemonic and passphrase
 231         DOM.phrase.val("");
 232         DOM.passphrase.val("");
 233         seed = null;
 234         if (rootKeyChangedTimeoutEvent != null) {
 235             clearTimeout(rootKeyChangedTimeoutEvent);
 236         }
 237         rootKeyChangedTimeoutEvent = setTimeout(rootKeyChanged, 400);
 238     }
 239
 240     function rootKeyChanged() {
 241         showPending();
 242         hideValidationError();
 243         // Validate the root key TODO
 244         var rootKeyBase58 = DOM.rootKey.val();
 245         var errorText = validateRootKey(rootKeyBase58);
 246         if (errorText) {
 247             showValidationError(errorText);
 248             return;
 249         }
 250         // Calculate and display
 251         calcBip32RootKeyFromBase58(rootKeyBase58);
 252         calcForDerivationPath();
 253     }
 254
 255     function calcForDerivationPath() {
 256         showPending();
 257         clearAddressesList();
 258         hideValidationError();
 259         // Get the derivation path
 260         var derivationPath = getDerivationPath();
 261         var errorText = findDerivationPathErrors(derivationPath);
 262         if (errorText) {
 263             showValidationError(errorText);
 264             return;
 265         }
 266         bip32ExtendedKey = calcBip32ExtendedKey(derivationPath);
 267         if (bip44TabSelected()) {
 268             displayBip44Info();
 269         }
 270         displayBip32Info();
 271         hidePending();
 272     }
 273
 274     function generateClicked() {
 275         if (isUsingOwnEntropy()) {
 276             return;
 277         }
 278         clearDisplay();
 279         showPending();
 280         setTimeout(function() {
 281             setMnemonicLanguage();
 282             var phrase = generateRandomPhrase();
 283             if (!phrase) {
 284                 return;
 285             }
 286             phraseChanged();
 287         }, 50);
 288     }
 289
 290     function languageChanged() {
 291         setTimeout(function() {
 292             setMnemonicLanguage();
 293             if (DOM.phrase.val().length > 0) {
 294                 var newPhrase = convertPhraseToNewLanguage();
 295                 DOM.phrase.val(newPhrase);
 296                 phraseChanged();
 297             }
 298             else {
 299                 DOM.generate.trigger("click");
 300             }
 301         }, 50);
 302     }
 303
 304     function toggleIndexes() {
 305         showIndex = !showIndex;
 306         $("td.index span").toggleClass("invisible");
 307     }
 308
 309     function toggleAddresses() {
 310         showAddress = !showAddress;
 311         $("td.address span").toggleClass("invisible");
 312     }
 313
 314     function togglePublicKeys() {
 315         showPubKey = !showPubKey;
 316         $("td.pubkey span").toggleClass("invisible");
 317     }
 318
 319     function togglePrivateKeys() {
 320         showPrivKey = !showPrivKey;
 321         $("td.privkey span").toggleClass("invisible");
 322     }
 323
 324     // Private methods
 325
 326     function generateRandomPhrase() {
 327         if (!hasStrongRandom()) {
 328             var errorText = "This browser does not support strong randomness";
 329             showValidationError(errorText);
 330             return;
 331         }
 332         var numWords = parseInt(DOM.generatedStrength.val());
 333         var strength = numWords / 3 * 32;
 334         var words = mnemonic.generate(strength);
 335         DOM.phrase.val(words);
 336         return words;
 337     }
 338
 339     function calcBip32RootKeyFromSeed(phrase, passphrase) {
 340         seed = mnemonic.toSeed(phrase, passphrase);
 341         bip32RootKey = bitcoin.HDNode.fromSeedHex(seed, network);
 342     }
 343
 344     function calcBip32RootKeyFromBase58(rootKeyBase58) {
 345         bip32RootKey = bitcoin.HDNode.fromBase58(rootKeyBase58, network);
 346     }
 347
 348     function calcBip32ExtendedKey(path) {
 349         // Check there's a root key to derive from
 350         if (!bip32RootKey) {
 351             return bip32RootKey;
 352         }
 353         var extendedKey = bip32RootKey;
 354         // Derive the key from the path
 355         var pathBits = path.split("/");
 356         for (var i=0; i<pathBits.length; i++) {
 357             var bit = pathBits[i];
 358             var index = parseInt(bit);
 359             if (isNaN(index)) {
 360                 continue;
 361             }
 362             var hardened = bit[bit.length-1] == "'";
 363             var isPriv = "privKey" in extendedKey;
 364             var invalidDerivationPath = hardened && !isPriv;
 365             if (invalidDerivationPath) {
 366                 extendedKey = null;
 367             }
 368             else if (hardened) {
 369                 extendedKey = extendedKey.deriveHardened(index);
 370             }
 371             else {
 372                 extendedKey = extendedKey.derive(index);
 373             }
 374         }
 375         return extendedKey
 376     }
 377
 378     function showValidationError(errorText) {
 379         DOM.feedback
 380             .text(errorText)
 381             .show();
 382     }
 383
 384     function hideValidationError() {
 385         DOM.feedback
 386             .text("")
 387             .hide();
 388     }
 389
 390     function findPhraseErrors(phrase) {
 391         // Preprocess the words
 392         phrase = mnemonic.normalizeString(phrase);
 393         var words = phraseToWordArray(phrase);
 394         // Detect blank phrase
 395         if (words.length == 0) {
 396             return "Blank mnemonic";
 397         }
 398         // Check each word
 399         for (var i=0; i<words.length; i++) {
 400             var word = words[i];
 401             var language = getLanguage();
 402             if (WORDLISTS[language].indexOf(word) == -1) {
 403                 console.log("Finding closest match to " + word);
 404                 var nearestWord = findNearestWord(word);
 405                 return word + " not in wordlist, did you mean " + nearestWord + "?";
 406             }
 407         }
 408         // Check the words are valid
 409         var properPhrase = wordArrayToPhrase(words);
 410         var isValid = mnemonic.check(properPhrase);
 411         if (!isValid) {
 412             return "Invalid mnemonic";
 413         }
 414         return false;
 415     }
 416
 417     function validateRootKey(rootKeyBase58) {
 418         try {
 419             bitcoin.HDNode.fromBase58(rootKeyBase58);
 420         }
 421         catch (e) {
 422             return "Invalid root key";
 423         }
 424         return "";
 425     }
 426
 427     function getDerivationPath() {
 428         if (bip44TabSelected()) {
 429             var purpose = parseIntNoNaN(DOM.bip44purpose.val(), 44);
 430             var coin = parseIntNoNaN(DOM.bip44coin.val(), 0);
 431             var account = parseIntNoNaN(DOM.bip44account.val(), 0);
 432             var change = parseIntNoNaN(DOM.bip44change.val(), 0);
 433             var path = "m/";
 434             path += purpose + "'/";
 435             path += coin + "'/";
 436             path += account + "'/";
 437             path += change;
 438             DOM.bip44path.val(path);
 439             var derivationPath = DOM.bip44path.val();
 440             console.log("Using derivation path from BIP44 tab: " + derivationPath);
 441             return derivationPath;
 442         }
 443         else if (bip32TabSelected()) {
 444             var derivationPath = DOM.bip32path.val();
 445             console.log("Using derivation path from BIP32 tab: " + derivationPath);
 446             return derivationPath;
 447         }
 448         else {
 449             console.log("Unknown derivation path");
 450         }
 451     }
 452
 453     function findDerivationPathErrors(path) {
 454         // TODO is not perfect but is better than nothing
 455         // Inspired by
 456         // https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#test-vectors
 457         // and
 458         // https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#extended-keys
 459         var maxDepth = 255; // TODO verify this!!
 460         var maxIndexValue = Math.pow(2, 31); // TODO verify this!!
 461         if (path[0] != "m") {
 462             return "First character must be 'm'";
 463         }
 464         if (path.length > 1) {
 465             if (path[1] != "/") {
 466                 return "Separator must be '/'";
 467             }
 468             var indexes = path.split("/");
 469             if (indexes.length > maxDepth) {
 470                 return "Derivation depth is " + indexes.length + ", must be less than " + maxDepth;
 471             }
 472             for (var depth = 1; depth<indexes.length; depth++) {
 473                 var index = indexes[depth];
 474                 var invalidChars = index.replace(/^[0-9]+'?$/g, "")
 475                 if (invalidChars.length > 0) {
 476                     return "Invalid characters " + invalidChars + " found at depth " + depth;
 477                 }
 478                 var indexValue = parseInt(index.replace("'", ""));
 479                 if (isNaN(depth)) {
 480                     return "Invalid number at depth " + depth;
 481                 }
 482                 if (indexValue > maxIndexValue) {
 483                     return "Value of " + indexValue + " at depth " + depth + " must be less than " + maxIndexValue;
 484                 }
 485             }
 486         }
 487         // Check root key exists or else derivation path is useless!
 488         if (!bip32RootKey) {
 489             return "No root key";
 490         }
 491         // Check no hardened derivation path when using xpub keys
 492         var hardened = path.indexOf("'") > -1;
 493         var isXpubkey = !("privKey" in bip32RootKey);
 494         if (hardened && isXpubkey) {
 495             return "Hardened derivation path is invalid with xpub key";
 496         }
 497         return false;
 498     }
 499
 500     function displayBip44Info() {
 501         // Get the derivation path for the account
 502         var purpose = parseIntNoNaN(DOM.bip44purpose.val(), 44);
 503         var coin = parseIntNoNaN(DOM.bip44coin.val(), 0);
 504         var account = parseIntNoNaN(DOM.bip44account.val(), 0);
 505         var path = "m/";
 506         path += purpose + "'/";
 507         path += coin + "'/";
 508         path += account + "'/";
 509         // Calculate the account extended keys
 510         var accountExtendedKey = calcBip32ExtendedKey(path);
 511         var accountXprv = accountExtendedKey.toBase58();
 512         var accountXpub = accountExtendedKey.toBase58(false);
 513         // Display the extended keys
 514         DOM.bip44accountXprv.val(accountXprv);
 515         DOM.bip44accountXpub.val(accountXpub);
 516     }
 517
 518     function displayBip32Info() {
 519         // Display the key
 520         DOM.seed.val(seed);
 521         var rootKey = bip32RootKey.toBase58();
 522         DOM.rootKey.val(rootKey);
 523         var xprvkeyB58 = "NA";
 524         if (bip32ExtendedKey.privKey) {
 525             xprvkeyB58 = bip32ExtendedKey.toBase58();
 526         }
 527         var extendedPrivKey = xprvkeyB58;
 528         DOM.extendedPrivKey.val(extendedPrivKey);
 529         var extendedPubKey = bip32ExtendedKey.toBase58(false);
 530         DOM.extendedPubKey.val(extendedPubKey);
 531         // Display the addresses and privkeys
 532         clearAddressesList();
 533         displayAddresses(0, 20);
 534     }
 535
 536     function displayAddresses(start, total) {
 537         generationProcesses.push(new (function() {
 538
 539             var rows = [];
 540
 541             this.stop = function() {
 542                 for (var i=0; i<rows.length; i++) {
 543                     rows[i].shouldGenerate = false;
 544                 }
 545             }
 546
 547             for (var i=0; i<total; i++) {
 548                 var index = i + start;
 549                 rows.push(new TableRow(index));
 550             }
 551
 552         })());
 553     }
 554
 555     function TableRow(index) {
 556
 557         var self = this;
 558         this.shouldGenerate = true;
 559         var useHardenedAddresses = DOM.hardenedAddresses.prop("checked");
 560
 561         function init() {
 562             calculateValues();
 563         }
 564
 565         function calculateValues() {
 566             setTimeout(function() {
 567                 if (!self.shouldGenerate) {
 568                     return;
 569                 }
 570                 var key = "";
 571                 if (useHardenedAddresses) {
 572                     key = bip32ExtendedKey.deriveHardened(index);
 573                 }
 574                 else {
 575                     key = bip32ExtendedKey.derive(index);
 576                 }
 577                 var address = key.getAddress().toString();
 578                 var privkey = "NA";
 579                 if (key.privKey) {
 580                     privkey = key.privKey.toWIF(network);
 581                 }
 582                 var pubkey = key.pubKey.toHex();
 583                 var indexText = getDerivationPath() + "/" + index;
 584                 if (useHardenedAddresses) {
 585                     indexText = indexText + "'";
 586                 }
 587                 // Ethereum values are different
 588                 if (networks[DOM.network.val()].name == "Ethereum") {
 589                     var privKeyBuffer = key.privKey.d.toBuffer();
 590                     privkey = privKeyBuffer.toString('hex');
 591                     var addressBuffer = ethUtil.privateToAddress(privKeyBuffer);
 592                     var hexAddress = addressBuffer.toString('hex');
 593                     var checksumAddress = ethUtil.toChecksumAddress(hexAddress);
 594                     address = ethUtil.addHexPrefix(checksumAddress);
 595                 }
 596                 // Ripple values are different
 597                 if (networks[DOM.network.val()].name == "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.entropyStrength.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 strength = "extremely weak";
 929         if (numberOfBits >= 64) {
 930             strength = "very weak";
 931         }
 932         if (numberOfBits >= 96) {
 933             strength = "weak";
 934         }
 935         if (numberOfBits >= 128) {
 936             strength = "strong";
 937         }
 938         if (numberOfBits >= 160) {
 939             strength = "very strong";
 940         }
 941         if (numberOfBits >= 192) {
 942             strength = "extremely strong";
 943         }
 944         // If time to crack is less than one day, and password is considered
 945         // strong or better based on the number of bits, rename strength to
 946         // 'easily cracked'.
 947         try {
 948             var z = zxcvbn(entropy.base.parts.join(""));
 949             var timeToCrack = z.crack_times_seconds.offline_fast_hashing_1e10_per_second;
 950             if (timeToCrack < 86400 && entropy.binaryStr.length >= 128) {
 951                 strength = "easily cracked";
 952                 if (z.feedback.warning != "") {
 953                     strength = strength + " - " + z.feedback.warning;
 954                 };
 955             }
 956         }
 957         catch (e) {
 958             strength = "unknown";
 959             console.log("Error detecting entropy strength with zxcvbn:");
 960             console.log(e);
 961         }
 962         var entropyTypeStr = getEntropyTypeStr(entropy);
 963         var wordCount = Math.floor(numberOfBits / 32) * 3;
 964         var bitsPerEvent = entropy.bitsPerEvent.toFixed(2);
 965         DOM.entropyFiltered.html(entropy.cleanHtml);
 966         DOM.entropyType.text(entropyTypeStr);
 967         DOM.entropyStrength.text(strength);
 968         DOM.entropyEventCount.text(entropy.base.ints.length);
 969         DOM.entropyBits.text(numberOfBits);
 970         DOM.entropyWordCount.text(wordCount);
 971         DOM.entropyBinary.text(entropy.binaryStr);
 972         DOM.entropyBitsPerEvent.text(bitsPerEvent);
 973     }
 974
 975     function getEntropyTypeStr(entropy) {
 976         var typeStr = entropy.base.str;
 977         // Add some detail if these are cards
 978         if (entropy.base.asInt == 52) {
 979             var cardDetail = []; // array of message strings
 980             // Detect duplicates
 981             var dupes = [];
 982             var dupeTracker = {};
 983             for (var i=0; i<entropy.base.parts.length; i++) {
 984                 var card = entropy.base.parts[i];
 985                 var cardUpper = card.toUpperCase();
 986                 if (cardUpper in dupeTracker) {
 987                     dupes.push(card);
 988                 }
 989                 dupeTracker[cardUpper] = true;
 990             }
 991             if (dupes.length > 0) {
 992                 var dupeWord = "duplicates";
 993                 if (dupes.length == 1) {
 994                     dupeWord = "duplicate";
 995                 }
 996                 var msg = dupes.length + " " + dupeWord + ": " + dupes.slice(0,3).join(" ");
 997                 if (dupes.length > 3) {
 998                     msg += "...";
 999                 }
1000                 cardDetail.push(msg);
1001             }
1002             // Detect full deck
1003             var uniqueCards = [];
1004             for (var uniqueCard in dupeTracker) {
1005                 uniqueCards.push(uniqueCard);
1006             }
1007             if (uniqueCards.length == 52) {
1008                 cardDetail.unshift("full deck");
1009             }
1010             // Detect missing cards
1011             var values = "A23456789TJQK";
1012             var suits = "CDHS";
1013             var missingCards = [];
1014             for (var i=0; i<suits.length; i++) {
1015                 for (var j=0; j<values.length; j++) {
1016                     var card = values[j] + suits[i];
1017                     if (!(card in dupeTracker)) {
1018                         missingCards.push(card);
1019                     }
1020                 }
1021             }
1022             // Display missing cards if six or less, ie clearly going for full deck
1023             if (missingCards.length > 0 && missingCards.length <= 6) {
1024                 var msg = missingCards.length + " missing: " + missingCards.slice(0,3).join(" ");
1025                 if (missingCards.length > 3) {
1026                     msg += "...";
1027                 }
1028                 cardDetail.push(msg);
1029             }
1030             // Add card details to typeStr
1031             if (cardDetail.length > 0) {
1032                 typeStr += " (" + cardDetail.join(", ") + ")";
1033             }
1034         }
1035         return typeStr;
1036     }
1037
1038     function setQrEvents(els) {
1039         els.on("mouseenter", createQr);
1040         els.on("mouseleave", destroyQr);
1041         els.on("click", toggleQr);
1042     }
1043
1044     function createQr(e) {
1045         var content = e.target.textContent || e.target.value;
1046         if (content) {
1047             var size = 130;
1048             DOM.qrImage.qrcode({width: size, height: size, text: content});
1049             if (!showQr) {
1050                 DOM.qrHider.addClass("hidden");
1051             }
1052             else {
1053                 DOM.qrHider.removeClass("hidden");
1054             }
1055             DOM.qrContainer.removeClass("hidden");
1056         }
1057     }
1058
1059     function destroyQr() {
1060         DOM.qrImage.text("");
1061         DOM.qrContainer.addClass("hidden");
1062     }
1063
1064     function toggleQr() {
1065         showQr = !showQr;
1066         DOM.qrHider.toggleClass("hidden");
1067         DOM.qrHint.toggleClass("hidden");
1068     }
1069
1070     function bip44TabSelected() {
1071         return DOM.bip44tab.hasClass("active");
1072     }
1073
1074     function bip32TabSelected() {
1075         return DOM.bip32tab.hasClass("active");
1076     }
1077
1078     var networks = [
1079         {
1080             name: "Bitcoin",
1081             onSelect: function() {
1082                 network = bitcoin.networks.bitcoin;
1083                 DOM.bip44coin.val(0);
1084             },
1085         },
1086         {
1087             name: "Bitcoin Testnet",
1088             onSelect: function() {
1089                 network = bitcoin.networks.testnet;
1090                 DOM.bip44coin.val(1);
1091             },
1092         },
1093         {
1094             name: "CLAM",
1095             onSelect: function() {
1096                 network = bitcoin.networks.clam;
1097                 DOM.bip44coin.val(23);
1098             },
1099         },
1100         {
1101             name: "Dogecoin",
1102             onSelect: function() {
1103                 network = bitcoin.networks.dogecoin;
1104                 DOM.bip44coin.val(3);
1105             },
1106         },
1107         {
1108             name: "DASH",
1109             onSelect: function() {
1110                 network = bitcoin.networks.dash;
1111                 DOM.bip44coin.val(5);
1112             },
1113         },
1114         {
1115             name: "Ethereum",
1116             onSelect: function() {
1117                 network = bitcoin.networks.bitcoin;
1118                 DOM.bip44coin.val(60);
1119             },
1120         },
1121         {
1122             name: "GAME",
1123             onSelect: function() {
1124                 network = bitcoin.networks.game;
1125                 DOM.bip44coin.val(101);
1126             },
1127         },
1128         {
1129             name: "Jumbucks",
1130             onSelect: function() {
1131                 network = bitcoin.networks.jumbucks;
1132                 DOM.bip44coin.val(26);
1133             },
1134         },
1135         {
1136             name: "Litecoin",
1137             onSelect: function() {
1138                 network = bitcoin.networks.litecoin;
1139                 DOM.bip44coin.val(2);
1140             },
1141         },
1142         {
1143             name: "Namecoin",
1144             onSelect: function() {
1145                 network = bitcoin.networks.namecoin;
1146                 DOM.bip44coin.val(7);
1147             },
1148         },
1149         {
1150             name: "Peercoin",
1151             onSelect: function() {
1152                 network = bitcoin.networks.peercoin;
1153                 DOM.bip44coin.val(6);
1154             },
1155         },
1156         {
1157             name: "Ripple",
1158             onSelect: function() {
1159                 network = bitcoin.networks.bitcoin;
1160                 DOM.bip44coin.val(144);
1161             },
1162         },
1163         {
1164             name: "ShadowCash",
1165             onSelect: function() {
1166                 network = bitcoin.networks.shadow;
1167                 DOM.bip44coin.val(35);
1168             },
1169         },
1170         {
1171             name: "ShadowCash Testnet",
1172             onSelect: function() {
1173                 network = bitcoin.networks.shadowtn;
1174                 DOM.bip44coin.val(1);
1175             },
1176         },
1177         {
1178             name: "Viacoin",
1179             onSelect: function() {
1180                 network = bitcoin.networks.viacoin;
1181                 DOM.bip44coin.val(14);
1182             },
1183         },
1184         {
1185             name: "Viacoin Testnet",
1186             onSelect: function() {
1187                 network = bitcoin.networks.viacointestnet;
1188                 DOM.bip44coin.val(1);
1189             },
1190         },
1191     ]
1192
1193     var clients = [
1194         {
1195             name: "Bitcoin Core",
1196             onSelect: function() {
1197                 DOM.bip32path.val("m/0'/0'");
1198                 DOM.hardenedAddresses.prop('checked', true);
1199             },
1200         },
1201         {
1202             name: "blockchain.info",
1203             onSelect: function() {
1204                 DOM.bip32path.val("m/44'/0'/0'");
1205                 DOM.hardenedAddresses.prop('checked', false);
1206             },
1207         },
1208         {
1209             name: "MultiBit HD",
1210             onSelect: function() {
1211                 DOM.bip32path.val("m/0'/0");
1212                 DOM.hardenedAddresses.prop('checked', false);
1213             },
1214         }
1215     ]
1216
1217     init();
1218
1219 })();