DOM.useEntropy = $(".use-entropy");
DOM.entropyContainer = $(".entropy-container");
DOM.entropy = $(".entropy");
- DOM.entropyError = $(".entropy-error");
+ DOM.entropyFiltered = DOM.entropyContainer.find(".filtered");
+ DOM.entropyType = DOM.entropyContainer.find(".type");
+ DOM.entropyStrength = DOM.entropyContainer.find(".strength");
+ DOM.entropyEventCount = DOM.entropyContainer.find(".event-count");
+ DOM.entropyBits = DOM.entropyContainer.find(".bits");
+ DOM.entropyBitsPerEvent = DOM.entropyContainer.find(".bits-per-event");
+ DOM.entropyWordCount = DOM.entropyContainer.find(".word-count");
+ DOM.entropyBinary = DOM.entropyContainer.find(".binary");
+ DOM.entropyMnemonicLength = DOM.entropyContainer.find(".mnemonic-length");
DOM.phrase = $(".phrase");
DOM.passphrase = $(".passphrase");
DOM.generateContainer = $(".generate-container");
DOM.bip44coin = $("#bip44 .coin");
DOM.bip44account = $("#bip44 .account");
DOM.bip44change = $("#bip44 .change");
- DOM.strength = $(".strength");
+ DOM.generatedStrength = $(".generate-container .strength");
DOM.hardenedAddresses = $(".hardened-addresses");
DOM.addresses = $(".addresses");
DOM.rowsToAdd = $(".rows-to-add");
DOM.network.on("change", networkChanged);
DOM.useEntropy.on("change", setEntropyVisibility);
DOM.entropy.on("input", delayedEntropyChanged);
+ DOM.entropyMnemonicLength.on("change", entropyChanged);
DOM.phrase.on("input", delayedPhraseChanged);
DOM.passphrase.on("input", delayedPhraseChanged);
DOM.generate.on("click", generateClicked);
// If blank entropy, clear mnemonic, addresses, errors
if (DOM.entropy.val().trim().length == 0) {
clearDisplay();
- hideEntropyError();
+ clearEntropyFeedback();
DOM.phrase.val("");
showValidationError("Blank entropy");
return;
showValidationError(errorText);
return;
}
- var numWords = parseInt(DOM.strength.val());
+ var numWords = parseInt(DOM.generatedStrength.val());
var strength = numWords / 3 * 32;
var words = mnemonic.generate(strength);
DOM.phrase.val(words);
}
function setMnemonicFromEntropy() {
- hideEntropyError();
+ clearEntropyFeedback();
// Get entropy value
var entropyStr = DOM.entropy.val();
// Work out minimum base for entropy
return;
}
// Show entropy details
- var extraBits = 32 - (entropy.binaryStr.length % 32);
- var extraChars = Math.ceil(extraBits * Math.log(2) / Math.log(entropy.base.asInt));
- var strength = "an extremely weak";
- if (entropy.hexStr.length >= 8) {
- strength = "a very weak";
- }
- if (entropy.hexStr.length >= 12) {
- strength = "a weak";
- }
- if (entropy.hexStr.length >= 24) {
- strength = "a strong";
- }
- if (entropy.hexStr.length >= 32) {
- strength = "a very strong";
- }
- if (entropy.hexStr.length >= 40) {
- strength = "an extremely strong";
- }
- if (entropy.hexStr.length >=48) {
- strength = "an even stronger"
+ showEntropyFeedback(entropy);
+ // Use entropy hash if not using raw entropy
+ var bits = entropy.binaryStr;
+ var mnemonicLength = DOM.entropyMnemonicLength.val();
+ if (mnemonicLength != "raw") {
+ // Get bits by hashing entropy with SHA256
+ var hash = sjcl.hash.sha256.hash(entropy.cleanStr);
+ var hex = sjcl.codec.hex.fromBits(hash);
+ bits = BigInteger.parse(hex, 16).toString(2);
+ for (var i=0; i<256-bits.length; i++) {
+ bits = "0" + bits;
+ }
+ // Truncate hash to suit number of words
+ mnemonicLength = parseInt(mnemonicLength);
+ var numberOfBits = 32 * mnemonicLength / 3;
+ bits = bits.substring(0, numberOfBits);
}
- var msg = "Have " + entropy.binaryStr.length + " bits of entropy, " + extraChars + " more " + entropy.base.str + " chars required to generate " + strength + " mnemonic: " + entropy.cleanStr;
- showEntropyError(msg);
// Discard trailing entropy
- var hexStr = entropy.hexStr.substring(0, Math.floor(entropy.hexStr.length / 8) * 8);
+ var bitsToUse = Math.floor(bits.length / 32) * 32;
+ var binaryStr = bits.substring(0, bitsToUse);
// Convert entropy string to numeric array
var entropyArr = [];
- for (var i=0; i<hexStr.length / 2; i++) {
- var entropyByte = parseInt(hexStr[i*2].concat(hexStr[i*2+1]), 16);
+ for (var i=0; i<binaryStr.length / 8; i++) {
+ var byteAsBits = binaryStr.substring(i*8, i*8+8);
+ var entropyByte = parseInt(byteAsBits, 2);
entropyArr.push(entropyByte)
}
// Convert entropy array to mnemonic
DOM.phrase.val(phrase);
}
- function hideEntropyError() {
- DOM.entropyError.addClass("hidden");
- }
-
- function showEntropyError(msg) {
- DOM.entropyError.text(msg);
- DOM.entropyError.removeClass("hidden");
+ function clearEntropyFeedback() {
+ DOM.entropyStrength.text("...");
+ DOM.entropyType.text("");
+ DOM.entropyWordCount.text("0");
+ DOM.entropyEventCount.text("0");
+ DOM.entropyBitsPerEvent.text("0");
+ DOM.entropyBits.text("0");
+ DOM.entropyFiltered.html(" ");
+ DOM.entropyBinary.html(" ");
+ }
+
+ function showEntropyFeedback(entropy) {
+ var strength = "extremely weak";
+ if (entropy.binaryStr.length >= 64) {
+ strength = "very weak";
+ }
+ if (entropy.binaryStr.length >= 96) {
+ strength = "weak";
+ }
+ if (entropy.binaryStr.length >= 128) {
+ strength = "strong";
+ }
+ if (entropy.binaryStr.length >= 160) {
+ strength = "very strong";
+ }
+ if (entropy.binaryStr.length >= 192) {
+ strength = "extremely strong";
+ }
+ // If time to crack is less than one day, and password is considered
+ // strong or better based on the number of bits, rename strength to
+ // 'easily cracked'.
+ var z = zxcvbn(entropy.cleanStr);
+ var timeToCrack = z.crack_times_seconds.offline_fast_hashing_1e10_per_second;
+ if (timeToCrack < 86400 && entropy.binaryStr.length >= 128) {
+ strength = "easily cracked";
+ if (z.feedback.warning != "") {
+ strength = strength + " - " + z.feedback.warning;
+ };
+ }
+ var bitsStr = entropy.binaryStr.length;
+ var wordCount = Math.floor(entropy.binaryStr.length / 32) * 3;
+ DOM.entropyFiltered.html(entropy.cleanHtml);
+ DOM.entropyType.text(entropy.base.str);
+ DOM.entropyStrength.text(strength);
+ DOM.entropyEventCount.text(entropy.base.ints.length);
+ DOM.entropyBits.text(bitsStr);
+ DOM.entropyWordCount.text(wordCount);
+ DOM.entropyBinary.text(entropy.binaryStr);
+ DOM.entropyBitsPerEvent.text(Math.log2(entropy.base.asInt).toFixed(2));
}
var networks = [