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Added 2/3 Seed Card

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This commit is contained in:
Matthew Cornelisse
2018-11-20 02:23:51 -06:00
committed by GitHub
parent b1100c66eb
commit 97bde20b84
1 changed files with 28 additions and 0 deletions
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28
src/js/index.js
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@@ -44,6 +44,7 @@
DOM.entropyWeakEntropyOverrideWarning = DOM.entropyContainer.find(".weak-entropy-override-warning");
DOM.entropyFilterWarning = DOM.entropyContainer.find(".filter-warning");
DOM.phrase = $(".phrase");
DOM.splitPhrase = $(".phraseSplit");
DOM.passphrase = $(".passphrase");
DOM.generateContainer = $(".generate-container");
DOM.generate = $(".generate");
@@ -297,6 +298,7 @@
clearDisplay();
clearEntropyFeedback();
DOM.phrase.val("");
DOM.phraseSplit.val("");
showValidationError("Blank entropy");
return;
}
@@ -331,6 +333,7 @@
showPending();
// Clear existing mnemonic and passphrase
DOM.phrase.val("");
DOM.phraseSplit.val("");
DOM.passphrase.val("");
seed = null;
if (rootKeyChangedTimeoutEvent != null) {
@@ -417,6 +420,7 @@
if (DOM.phrase.val().length > 0) {
var newPhrase = convertPhraseToNewLanguage();
DOM.phrase.val(newPhrase);
writeSplitPhrase(newPhrase);
phraseChanged();
}
else {
@@ -477,6 +481,7 @@
// show the words
var words = mnemonic.toMnemonic(data);
DOM.phrase.val(words);
writeSplitPhrase(words);
// show the entropy
var entropyHex = uint8ArrayToHex(data);
DOM.entropy.val(entropyHex);
@@ -1250,6 +1255,28 @@
}
return phrase;
}
function writeSplitPhrase(phrase) {
var wordCount = phrase.split(/\s/g).length; //get number of words in phrase
var left=[]; //initialize array of indexs
for (var i=0;i<wordCount;i++) left.push(i); //add all indexs to array
var group=[[],[],[]], //make array for 3 groups
groupI=-1; //initialize group index
var seed = Math.abs(sjcl.hash.sha256.hash(phrase)[0])% 2147483647; //start seed at sudo random value based on hash of words
while (left.length>0) { //while indexs left
groupI=(groupI+1)%3; //get next group to insert index into
seed = seed * 16807 % 2147483647; //change random value.(simple predicatable random number generator works well for this use)
var selected=Math.floor(left.length*(seed - 1) / 2147483646); //get index in left we will use for this group
group[groupI].push(left[selected]); //add index to group
left.splice(selected,1); //remove selected index
}
var cards=[phrase.split(/\s/g),phrase.split(/\s/g),phrase.split(/\s/g)];//make array of cards
for (var i=0;i<3;i++) { //go through each card
for (var ii=0;ii<wordCount/3;ii++) cards[i][group[i][ii]]='XXXX'; //erase words listed in the group
cards[i]='Card '+(i+1)+': '+wordArrayToPhrase(cards[i]); //combine words on card back to string
}
DOM.splitPhrase.val(cards.join("\r\n")); //make words visible
}
function isUsingOwnEntropy() {
return DOM.useEntropy.prop("checked");
@@ -1308,6 +1335,7 @@
var phrase = mnemonic.toMnemonic(entropyArr);
// Set the mnemonic in the UI
DOM.phrase.val(phrase);
writeSplitPhrase(phrase);
// Show the word indexes
showWordIndexes();
// Show the checksum