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Commit | Line | Data |
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ebd8d4e8 IC |
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 phraseChangeTimeoutEvent = null; | |
10 | ||
11 | var DOM = {}; | |
12 | DOM.phrase = $(".phrase"); | |
13 | DOM.generate = $(".generate"); | |
14 | DOM.rootKey = $(".root-key"); | |
15 | DOM.extendedPrivKey = $(".extended-priv-key"); | |
16 | DOM.extendedPubKey = $(".extended-pub-key"); | |
17 | DOM.bip32path = $("#bip32-path"); | |
18 | DOM.bip44path = $("#bip44-path"); | |
19 | DOM.bip44purpose = $("#bip44 .purpose"); | |
20 | DOM.bip44coin = $("#bip44 .coin"); | |
21 | DOM.bip44account = $("#bip44 .account"); | |
22 | DOM.bip44change = $("#bip44 .change"); | |
23 | DOM.strength = $(".strength"); | |
24 | DOM.addresses = $(".addresses"); | |
25 | DOM.rowsToAdd = $(".rows-to-add"); | |
26 | DOM.more = $(".more"); | |
27 | DOM.feedback = $(".feedback"); | |
28 | DOM.tab = $(".derivation-type a"); | |
29 | DOM.indexToggle = $(".index-toggle"); | |
30 | DOM.addressToggle = $(".address-toggle"); | |
31 | DOM.privateKeyToggle = $(".private-key-toggle"); | |
32 | ||
33 | var derivationPath = DOM.bip44path.val(); | |
34 | ||
35 | function init() { | |
36 | // Events | |
37 | DOM.phrase.on("keyup", delayedPhraseChanged); | |
38 | DOM.generate.on("click", generateClicked); | |
39 | DOM.more.on("click", showMore); | |
40 | DOM.bip32path.on("keyup", bip32Changed); | |
41 | DOM.bip44purpose.on("keyup", bip44Changed); | |
42 | DOM.bip44coin.on("keyup", bip44Changed); | |
43 | DOM.bip44account.on("keyup", bip44Changed); | |
44 | DOM.bip44change.on("keyup", bip44Changed); | |
45 | DOM.tab.on("click", tabClicked); | |
46 | DOM.indexToggle.on("click", toggleIndexes); | |
47 | DOM.addressToggle.on("click", toggleAddresses); | |
48 | DOM.privateKeyToggle.on("click", togglePrivateKeys); | |
49 | disableForms(); | |
50 | hidePending(); | |
51 | hideValidationError(); | |
52 | } | |
53 | ||
54 | // Event handlers | |
55 | ||
56 | function delayedPhraseChanged() { | |
57 | hideValidationError(); | |
58 | showPending(); | |
59 | if (phraseChangeTimeoutEvent != null) { | |
60 | clearTimeout(phraseChangeTimeoutEvent); | |
61 | } | |
62 | phraseChangeTimeoutEvent = setTimeout(phraseChanged, 400); | |
63 | } | |
64 | ||
65 | function phraseChanged() { | |
66 | showPending(); | |
67 | hideValidationError(); | |
68 | // Get the mnemonic phrase | |
69 | var phrase = DOM.phrase.val(); | |
70 | var errorText = findPhraseErrors(phrase); | |
71 | if (errorText) { | |
72 | showValidationError(errorText); | |
73 | return; | |
74 | } | |
75 | // Get the derivation path | |
76 | var errorText = findDerivationPathErrors(); | |
77 | if (errorText) { | |
78 | showValidationError(errorText); | |
79 | return; | |
80 | } | |
81 | // Calculate and display | |
82 | calcBip32Seed(phrase, derivationPath); | |
83 | displayBip32Info(); | |
84 | hidePending(); | |
85 | } | |
86 | ||
87 | function generateClicked() { | |
88 | clearDisplay(); | |
89 | showPending(); | |
90 | setTimeout(function() { | |
91 | var phrase = generateRandomPhrase(); | |
92 | if (!phrase) { | |
93 | return; | |
94 | } | |
95 | phraseChanged(); | |
96 | }, 50); | |
97 | } | |
98 | ||
99 | function tabClicked(e) { | |
100 | var activePath = $(e.target.getAttribute("href") + " .path"); | |
101 | derivationPath = activePath.val(); | |
102 | derivationChanged(); | |
103 | } | |
104 | ||
105 | function derivationChanged() { | |
106 | delayedPhraseChanged(); | |
107 | } | |
108 | ||
109 | function bip32Changed() { | |
110 | derivationPath = DOM.bip32path.val(); | |
111 | derivationChanged(); | |
112 | } | |
113 | ||
114 | function bip44Changed() { | |
115 | setBip44DerivationPath(); | |
116 | derivationPath = DOM.bip44path.val(); | |
117 | derivationChanged(); | |
118 | } | |
119 | ||
120 | function toggleIndexes() { | |
121 | $("td.index span").toggleClass("invisible"); | |
122 | } | |
123 | ||
124 | function toggleAddresses() { | |
125 | $("td.address span").toggleClass("invisible"); | |
126 | } | |
127 | ||
128 | function togglePrivateKeys() { | |
129 | $("td.privkey span").toggleClass("invisible"); | |
130 | } | |
131 | ||
132 | // Private methods | |
133 | ||
134 | function generateRandomPhrase() { | |
135 | if (!hasStrongRandom()) { | |
136 | var errorText = "This browser does not support strong randomness"; | |
137 | showValidationError(errorText); | |
138 | return; | |
139 | } | |
140 | var numWords = parseInt(DOM.strength.val()); | |
141 | // Check strength is an integer | |
142 | if (isNaN(numWords)) { | |
143 | DOM.strength.val("12"); | |
144 | numWords = 12; | |
145 | } | |
146 | // Check strength is a multiple of 32, if not round it down | |
147 | if (numWords % 3 != 0) { | |
148 | numWords = Math.floor(numWords / 3) * 3; | |
149 | DOM.strength.val(numWords); | |
150 | } | |
151 | // Check strength is at least 32 | |
152 | if (numWords == 0) { | |
153 | numWords = 3; | |
154 | DOM.strength.val(numWords); | |
155 | } | |
156 | var strength = numWords / 3 * 32; | |
157 | var words = mnemonic.generate(strength); | |
158 | DOM.phrase.val(words); | |
159 | return words; | |
160 | } | |
161 | ||
162 | function calcBip32Seed(phrase, path) { | |
163 | var seed = mnemonic.toSeed(phrase); | |
164 | var seedHash = Bitcoin.crypto.sha256(seed).toString("hex"); | |
165 | bip32RootKey = Bitcoin.HDNode.fromSeedHex(seedHash, network); | |
166 | bip32ExtendedKey = bip32RootKey; | |
167 | // Derive the key from the path | |
168 | var pathBits = path.split("/"); | |
169 | for (var i=0; i<pathBits.length; i++) { | |
170 | var bit = pathBits[i]; | |
171 | var index = parseInt(bit); | |
172 | if (isNaN(index)) { | |
173 | continue; | |
174 | } | |
175 | var hardened = bit[bit.length-1] == "'"; | |
176 | if (hardened) { | |
177 | bip32ExtendedKey = bip32ExtendedKey.deriveHardened(index); | |
178 | } | |
179 | else { | |
180 | bip32ExtendedKey = bip32ExtendedKey.derive(index); | |
181 | } | |
182 | } | |
183 | } | |
184 | ||
185 | function showValidationError(errorText) { | |
186 | DOM.feedback | |
187 | .text(errorText) | |
188 | .show(); | |
189 | } | |
190 | ||
191 | function hideValidationError() { | |
192 | DOM.feedback | |
193 | .text("") | |
194 | .hide(); | |
195 | } | |
196 | ||
197 | function findPhraseErrors(phrase) { | |
198 | // TODO make this right | |
199 | // Preprocess the words | |
200 | var parts = phrase.split(" "); | |
201 | var proper = []; | |
202 | for (var i=0; i<parts.length; i++) { | |
203 | var part = parts[i]; | |
204 | if (part.length > 0) { | |
205 | // TODO check that lowercasing is always valid to do | |
206 | proper.push(part.toLowerCase()); | |
207 | } | |
208 | } | |
209 | // TODO some levenstein on the words | |
210 | var properPhrase = proper.join(' '); | |
211 | // Check the words are valid | |
212 | var isValid = mnemonic.check(properPhrase); | |
213 | if (!isValid) { | |
214 | return "Invalid mnemonic"; | |
215 | } | |
216 | return false; | |
217 | } | |
218 | ||
219 | function findDerivationPathErrors(path) { | |
220 | // TODO | |
221 | return false; | |
222 | } | |
223 | ||
224 | function displayBip32Info() { | |
225 | // Display the key | |
226 | var rootKey = bip32RootKey.toBase58(); | |
227 | DOM.rootKey.val(rootKey); | |
228 | var extendedPrivKey = bip32ExtendedKey.toBase58(); | |
229 | DOM.extendedPrivKey.val(extendedPrivKey); | |
230 | var extendedPubKey = bip32ExtendedKey.toBase58(false); | |
231 | DOM.extendedPubKey.val(extendedPubKey); | |
232 | // Display the addresses and privkeys | |
233 | clearAddressesList(); | |
234 | displayAddresses(0, 20); | |
235 | } | |
236 | ||
237 | function displayAddresses(start, total) { | |
238 | for (var i=0; i<total; i++) { | |
239 | var index = i+ start; | |
240 | var key = bip32ExtendedKey.derive(index); | |
241 | var address = key.getAddress().toString(); | |
242 | var privkey = key.privKey.toWIF(); | |
243 | addAddressToList(index, address, privkey); | |
244 | } | |
245 | } | |
246 | ||
247 | function showMore() { | |
248 | var start = DOM.addresses.children().length; | |
249 | var rowsToAdd = parseInt(DOM.rowsToAdd.val()); | |
250 | if (isNaN(rowsToAdd)) { | |
251 | rowsToAdd = 20; | |
252 | DOM.rowsToAdd.val("20"); | |
253 | } | |
254 | if (rowsToAdd > 200) { | |
255 | var msg = "Generating " + rowsToAdd + " rows could take a while. "; | |
256 | msg += "Do you want to continue?"; | |
257 | if (!confirm(msg)) { | |
258 | return; | |
259 | } | |
260 | } | |
261 | showPending(); | |
262 | setTimeout(function() { | |
263 | displayAddresses(start, rowsToAdd); | |
264 | hidePending(); | |
265 | }, 50); | |
266 | } | |
267 | ||
268 | function clearDisplay() { | |
269 | clearAddressesList(); | |
270 | clearKey(); | |
271 | hideValidationError(); | |
272 | } | |
273 | ||
274 | function clearAddressesList() { | |
275 | DOM.addresses.empty(); | |
276 | } | |
277 | ||
278 | function clearKey() { | |
279 | DOM.rootKey.val(""); | |
280 | DOM.extendedPrivKey.val(""); | |
281 | DOM.extendedPubKey.val(""); | |
282 | } | |
283 | ||
284 | function addAddressToList(index, address, privkey) { | |
285 | var row = $(addressRowTemplate.html()); | |
286 | row.find(".index span").text(index); | |
287 | row.find(".address span").text(address); | |
288 | row.find(".privkey span").text(privkey); | |
289 | DOM.addresses.append(row); | |
290 | } | |
291 | ||
292 | function hasStrongRandom() { | |
293 | return 'crypto' in window && window['crypto'] !== null; | |
294 | } | |
295 | ||
296 | function disableForms() { | |
297 | $("form").on("submit", function(e) { | |
298 | e.preventDefault(); | |
299 | }); | |
300 | } | |
301 | ||
302 | function setBip44DerivationPath() { | |
303 | var purpose = parseIntNoNaN(DOM.bip44purpose.val(), 44); | |
304 | var coin = parseIntNoNaN(DOM.bip44coin.val(), 0); | |
305 | var account = parseIntNoNaN(DOM.bip44account.val(), 0); | |
306 | var change = parseIntNoNaN(DOM.bip44change.val(), 0); | |
307 | var path = "m/"; | |
308 | path += purpose + "'/"; | |
309 | path += coin + "'/"; | |
310 | path += account + "'/"; | |
311 | path += change; | |
312 | DOM.bip44path.val(path); | |
313 | } | |
314 | ||
315 | function parseIntNoNaN(val, defaultVal) { | |
316 | var v = parseInt(val); | |
317 | if (isNaN(v)) { | |
318 | return defaultVal; | |
319 | } | |
320 | return v; | |
321 | } | |
322 | ||
323 | function showPending() { | |
324 | DOM.feedback | |
325 | .text("Calculating...") | |
326 | .show(); | |
327 | } | |
328 | ||
329 | function hidePending() { | |
330 | DOM.feedback | |
331 | .text("") | |
332 | .hide(); | |
333 | } | |
334 | ||
335 | init(); | |
336 | ||
337 | })(); |