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1 | (function() { | |
2 | ||
3 | var mnemonic = new Mnemonic("english"); | |
4 | var bip32RootKey = null; | |
5 | var bip32ExtendedKey = null; | |
6 | var network = Bitcoin.networks.bitcoin; | |
7 | var addressRowTemplate = $("#address-row-template"); | |
8 | ||
9 | var showIndex = true; | |
10 | var showAddress = true; | |
11 | var showPrivKey = true; | |
12 | ||
13 | var phraseChangeTimeoutEvent = null; | |
14 | ||
15 | var DOM = {}; | |
16 | DOM.phrase = $(".phrase"); | |
17 | DOM.passphrase = $(".passphrase"); | |
18 | DOM.generate = $(".generate"); | |
19 | DOM.rootKey = $(".root-key"); | |
20 | DOM.extendedPrivKey = $(".extended-priv-key"); | |
21 | DOM.extendedPubKey = $(".extended-pub-key"); | |
22 | DOM.bip32path = $("#bip32-path"); | |
23 | DOM.bip44path = $("#bip44-path"); | |
24 | DOM.bip44purpose = $("#bip44 .purpose"); | |
25 | DOM.bip44coin = $("#bip44 .coin"); | |
26 | DOM.bip44account = $("#bip44 .account"); | |
27 | DOM.bip44change = $("#bip44 .change"); | |
28 | DOM.strength = $(".strength"); | |
29 | DOM.addresses = $(".addresses"); | |
30 | DOM.rowsToAdd = $(".rows-to-add"); | |
31 | DOM.more = $(".more"); | |
32 | DOM.feedback = $(".feedback"); | |
33 | DOM.tab = $(".derivation-type a"); | |
34 | DOM.indexToggle = $(".index-toggle"); | |
35 | DOM.addressToggle = $(".address-toggle"); | |
36 | DOM.privateKeyToggle = $(".private-key-toggle"); | |
37 | ||
38 | var derivationPath = DOM.bip44path.val(); | |
39 | ||
40 | function init() { | |
41 | // Events | |
42 | DOM.phrase.on("input", delayedPhraseChanged); | |
43 | DOM.passphrase.on("input", delayedPhraseChanged); | |
44 | DOM.generate.on("click", generateClicked); | |
45 | DOM.more.on("click", showMore); | |
46 | DOM.bip32path.on("input", bip32Changed); | |
47 | DOM.bip44purpose.on("input", bip44Changed); | |
48 | DOM.bip44coin.on("input", bip44Changed); | |
49 | DOM.bip44account.on("input", bip44Changed); | |
50 | DOM.bip44change.on("input", bip44Changed); | |
51 | DOM.tab.on("click", tabClicked); | |
52 | DOM.indexToggle.on("click", toggleIndexes); | |
53 | DOM.addressToggle.on("click", toggleAddresses); | |
54 | DOM.privateKeyToggle.on("click", togglePrivateKeys); | |
55 | disableForms(); | |
56 | hidePending(); | |
57 | hideValidationError(); | |
58 | } | |
59 | ||
60 | // Event handlers | |
61 | ||
62 | function delayedPhraseChanged() { | |
63 | hideValidationError(); | |
64 | showPending(); | |
65 | if (phraseChangeTimeoutEvent != null) { | |
66 | clearTimeout(phraseChangeTimeoutEvent); | |
67 | } | |
68 | phraseChangeTimeoutEvent = setTimeout(phraseChanged, 400); | |
69 | } | |
70 | ||
71 | function phraseChanged() { | |
72 | showPending(); | |
73 | hideValidationError(); | |
74 | // Get the mnemonic phrase | |
75 | var phrase = DOM.phrase.val(); | |
76 | var passphrase = DOM.passphrase.val(); | |
77 | var errorText = findPhraseErrors(phrase); | |
78 | if (errorText) { | |
79 | showValidationError(errorText); | |
80 | return; | |
81 | } | |
82 | // Get the derivation path | |
83 | var errorText = findDerivationPathErrors(); | |
84 | if (errorText) { | |
85 | showValidationError(errorText); | |
86 | return; | |
87 | } | |
88 | // Calculate and display | |
89 | calcBip32Seed(phrase, passphrase, derivationPath); | |
90 | displayBip32Info(); | |
91 | hidePending(); | |
92 | } | |
93 | ||
94 | function generateClicked() { | |
95 | clearDisplay(); | |
96 | showPending(); | |
97 | setTimeout(function() { | |
98 | var phrase = generateRandomPhrase(); | |
99 | if (!phrase) { | |
100 | return; | |
101 | } | |
102 | phraseChanged(); | |
103 | }, 50); | |
104 | } | |
105 | ||
106 | function tabClicked(e) { | |
107 | var activePath = $(e.target.getAttribute("href") + " .path"); | |
108 | derivationPath = activePath.val(); | |
109 | derivationChanged(); | |
110 | } | |
111 | ||
112 | function derivationChanged() { | |
113 | delayedPhraseChanged(); | |
114 | } | |
115 | ||
116 | function bip32Changed() { | |
117 | derivationPath = DOM.bip32path.val(); | |
118 | derivationChanged(); | |
119 | } | |
120 | ||
121 | function bip44Changed() { | |
122 | setBip44DerivationPath(); | |
123 | derivationPath = DOM.bip44path.val(); | |
124 | derivationChanged(); | |
125 | } | |
126 | ||
127 | function toggleIndexes() { | |
128 | showIndex = !showIndex; | |
129 | $("td.index span").toggleClass("invisible"); | |
130 | } | |
131 | ||
132 | function toggleAddresses() { | |
133 | showAddress = !showAddress; | |
134 | $("td.address span").toggleClass("invisible"); | |
135 | } | |
136 | ||
137 | function togglePrivateKeys() { | |
138 | showPrivKey = !showPrivKey; | |
139 | $("td.privkey span").toggleClass("invisible"); | |
140 | } | |
141 | ||
142 | // Private methods | |
143 | ||
144 | function generateRandomPhrase() { | |
145 | if (!hasStrongRandom()) { | |
146 | var errorText = "This browser does not support strong randomness"; | |
147 | showValidationError(errorText); | |
148 | return; | |
149 | } | |
150 | var numWords = parseInt(DOM.strength.val()); | |
151 | // Check strength is an integer | |
152 | if (isNaN(numWords)) { | |
153 | DOM.strength.val("12"); | |
154 | numWords = 12; | |
155 | } | |
156 | // Check strength is a multiple of 32, if not round it down | |
157 | if (numWords % 3 != 0) { | |
158 | numWords = Math.floor(numWords / 3) * 3; | |
159 | DOM.strength.val(numWords); | |
160 | } | |
161 | // Check strength is at least 32 | |
162 | if (numWords == 0) { | |
163 | numWords = 3; | |
164 | DOM.strength.val(numWords); | |
165 | } | |
166 | var strength = numWords / 3 * 32; | |
167 | var words = mnemonic.generate(strength); | |
168 | DOM.phrase.val(words); | |
169 | return words; | |
170 | } | |
171 | ||
172 | function calcBip32Seed(phrase, passphrase, path) { | |
173 | var seed = mnemonic.toSeed(phrase, passphrase); | |
174 | bip32RootKey = Bitcoin.HDNode.fromSeedHex(seed, network); | |
175 | bip32ExtendedKey = bip32RootKey; | |
176 | // Derive the key from the path | |
177 | var pathBits = path.split("/"); | |
178 | for (var i=0; i<pathBits.length; i++) { | |
179 | var bit = pathBits[i]; | |
180 | var index = parseInt(bit); | |
181 | if (isNaN(index)) { | |
182 | continue; | |
183 | } | |
184 | var hardened = bit[bit.length-1] == "'"; | |
185 | if (hardened) { | |
186 | bip32ExtendedKey = bip32ExtendedKey.deriveHardened(index); | |
187 | } | |
188 | else { | |
189 | bip32ExtendedKey = bip32ExtendedKey.derive(index); | |
190 | } | |
191 | } | |
192 | } | |
193 | ||
194 | function showValidationError(errorText) { | |
195 | DOM.feedback | |
196 | .text(errorText) | |
197 | .show(); | |
198 | } | |
199 | ||
200 | function hideValidationError() { | |
201 | DOM.feedback | |
202 | .text("") | |
203 | .hide(); | |
204 | } | |
205 | ||
206 | function findPhraseErrors(phrase) { | |
207 | // TODO make this right | |
208 | // Preprocess the words | |
209 | phrase = mnemonic.normalizeString(phrase); | |
210 | var parts = phrase.split(" "); | |
211 | var proper = []; | |
212 | for (var i=0; i<parts.length; i++) { | |
213 | var part = parts[i]; | |
214 | if (part.length > 0) { | |
215 | // TODO check that lowercasing is always valid to do | |
216 | proper.push(part.toLowerCase()); | |
217 | } | |
218 | } | |
219 | // TODO some levenstein on the words | |
220 | var properPhrase = proper.join(' '); | |
221 | // Check the words are valid | |
222 | var isValid = mnemonic.check(properPhrase); | |
223 | if (!isValid) { | |
224 | return "Invalid mnemonic"; | |
225 | } | |
226 | return false; | |
227 | } | |
228 | ||
229 | function findDerivationPathErrors(path) { | |
230 | // TODO | |
231 | return false; | |
232 | } | |
233 | ||
234 | function displayBip32Info() { | |
235 | // Display the key | |
236 | var rootKey = bip32RootKey.toBase58(); | |
237 | DOM.rootKey.val(rootKey); | |
238 | var extendedPrivKey = bip32ExtendedKey.toBase58(); | |
239 | DOM.extendedPrivKey.val(extendedPrivKey); | |
240 | var extendedPubKey = bip32ExtendedKey.toBase58(false); | |
241 | DOM.extendedPubKey.val(extendedPubKey); | |
242 | // Display the addresses and privkeys | |
243 | clearAddressesList(); | |
244 | displayAddresses(0, 20); | |
245 | } | |
246 | ||
247 | function displayAddresses(start, total) { | |
248 | for (var i=0; i<total; i++) { | |
249 | var index = i + start; | |
250 | new TableRow(index); | |
251 | } | |
252 | } | |
253 | ||
254 | function TableRow(index) { | |
255 | ||
256 | function init() { | |
257 | calculateValues(); | |
258 | } | |
259 | ||
260 | function calculateValues() { | |
261 | setTimeout(function() { | |
262 | var key = bip32ExtendedKey.derive(index); | |
263 | var address = key.getAddress().toString(); | |
264 | var privkey = key.privKey.toWIF(network); | |
265 | addAddressToList(index, address, privkey); | |
266 | }, 50) | |
267 | } | |
268 | ||
269 | init(); | |
270 | ||
271 | } | |
272 | ||
273 | function showMore() { | |
274 | var start = DOM.addresses.children().length; | |
275 | var rowsToAdd = parseInt(DOM.rowsToAdd.val()); | |
276 | if (isNaN(rowsToAdd)) { | |
277 | rowsToAdd = 20; | |
278 | DOM.rowsToAdd.val("20"); | |
279 | } | |
280 | if (rowsToAdd > 200) { | |
281 | var msg = "Generating " + rowsToAdd + " rows could take a while. "; | |
282 | msg += "Do you want to continue?"; | |
283 | if (!confirm(msg)) { | |
284 | return; | |
285 | } | |
286 | } | |
287 | displayAddresses(start, rowsToAdd); | |
288 | } | |
289 | ||
290 | function clearDisplay() { | |
291 | clearAddressesList(); | |
292 | clearKey(); | |
293 | hideValidationError(); | |
294 | } | |
295 | ||
296 | function clearAddressesList() { | |
297 | DOM.addresses.empty(); | |
298 | } | |
299 | ||
300 | function clearKey() { | |
301 | DOM.rootKey.val(""); | |
302 | DOM.extendedPrivKey.val(""); | |
303 | DOM.extendedPubKey.val(""); | |
304 | } | |
305 | ||
306 | function addAddressToList(index, address, privkey) { | |
307 | var row = $(addressRowTemplate.html()); | |
308 | // Elements | |
309 | var indexCell = row.find(".index span"); | |
310 | var addressCell = row.find(".address span"); | |
311 | var privkeyCell = row.find(".privkey span"); | |
312 | // Content | |
313 | indexCell.text(index); | |
314 | addressCell.text(address); | |
315 | privkeyCell.text(privkey); | |
316 | // Visibility | |
317 | if (!showIndex) { | |
318 | indexCell.addClass("invisible"); | |
319 | } | |
320 | if (!showAddress) { | |
321 | addressCell.addClass("invisible"); | |
322 | } | |
323 | if (!showPrivKey) { | |
324 | privkeCell.addClass("invisible"); | |
325 | } | |
326 | DOM.addresses.append(row); | |
327 | } | |
328 | ||
329 | function hasStrongRandom() { | |
330 | return 'crypto' in window && window['crypto'] !== null; | |
331 | } | |
332 | ||
333 | function disableForms() { | |
334 | $("form").on("submit", function(e) { | |
335 | e.preventDefault(); | |
336 | }); | |
337 | } | |
338 | ||
339 | function setBip44DerivationPath() { | |
340 | var purpose = parseIntNoNaN(DOM.bip44purpose.val(), 44); | |
341 | var coin = parseIntNoNaN(DOM.bip44coin.val(), 0); | |
342 | var account = parseIntNoNaN(DOM.bip44account.val(), 0); | |
343 | var change = parseIntNoNaN(DOM.bip44change.val(), 0); | |
344 | var path = "m/"; | |
345 | path += purpose + "'/"; | |
346 | path += coin + "'/"; | |
347 | path += account + "'/"; | |
348 | path += change; | |
349 | DOM.bip44path.val(path); | |
350 | } | |
351 | ||
352 | function parseIntNoNaN(val, defaultVal) { | |
353 | var v = parseInt(val); | |
354 | if (isNaN(v)) { | |
355 | return defaultVal; | |
356 | } | |
357 | return v; | |
358 | } | |
359 | ||
360 | function showPending() { | |
361 | DOM.feedback | |
362 | .text("Calculating...") | |
363 | .show(); | |
364 | } | |
365 | ||
366 | function hidePending() { | |
367 | DOM.feedback | |
368 | .text("") | |
369 | .hide(); | |
370 | } | |
371 | ||
372 | init(); | |
373 | ||
374 | })(); |