forked from sairajzero/flo-standard-operations
-
Notifications
You must be signed in to change notification settings - Fork 9
/
floCrypto.js
530 lines (493 loc) · 20.3 KB
/
floCrypto.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
(function (EXPORTS) { //floCrypto v2.3.6a
/* FLO Crypto Operators */
'use strict';
const floCrypto = EXPORTS;
const p = BigInteger("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F", 16);
const ecparams = EllipticCurve.getSECCurveByName("secp256k1");
const ascii_alternatives = `‘ '\n’ '\n“ "\n” "\n– --\n— ---\n≥ >=\n≤ <=\n≠ !=\n× *\n÷ /\n← <-\n→ ->\n↔ <->\n⇒ =>\n⇐ <=\n⇔ <=>`;
const exponent1 = () => p.add(BigInteger.ONE).divide(BigInteger("4"));
coinjs.compressed = true; //defaulting coinjs compressed to true;
function calculateY(x) {
let exp = exponent1();
// x is x value of public key in BigInteger format without 02 or 03 or 04 prefix
return x.modPow(BigInteger("3"), p).add(BigInteger("7")).mod(p).modPow(exp, p)
}
function getUncompressedPublicKey(compressedPublicKey) {
// Fetch x from compressedPublicKey
let pubKeyBytes = Crypto.util.hexToBytes(compressedPublicKey);
const prefix = pubKeyBytes.shift() // remove prefix
let prefix_modulus = prefix % 2;
pubKeyBytes.unshift(0) // add prefix 0
let x = new BigInteger(pubKeyBytes)
let xDecimalValue = x.toString()
// Fetch y
let y = calculateY(x);
let yDecimalValue = y.toString();
// verify y value
let resultBigInt = y.mod(BigInteger("2"));
let check = resultBigInt.toString() % 2;
if (prefix_modulus !== check)
yDecimalValue = y.negate().mod(p).toString();
return {
x: xDecimalValue,
y: yDecimalValue
};
}
function getSenderPublicKeyString() {
let privateKey = ellipticCurveEncryption.senderRandom();
var senderPublicKeyString = ellipticCurveEncryption.senderPublicString(privateKey);
return {
privateKey: privateKey,
senderPublicKeyString: senderPublicKeyString
}
}
function deriveSharedKeySender(receiverPublicKeyHex, senderPrivateKey) {
let receiverPublicKeyString = getUncompressedPublicKey(receiverPublicKeyHex);
var senderDerivedKey = ellipticCurveEncryption.senderSharedKeyDerivation(
receiverPublicKeyString.x, receiverPublicKeyString.y, senderPrivateKey);
return senderDerivedKey;
}
function deriveSharedKeyReceiver(senderPublicKeyString, receiverPrivateKey) {
return ellipticCurveEncryption.receiverSharedKeyDerivation(
senderPublicKeyString.XValuePublicString, senderPublicKeyString.YValuePublicString, receiverPrivateKey);
}
function getReceiverPublicKeyString(privateKey) {
return ellipticCurveEncryption.receiverPublicString(privateKey);
}
function wifToDecimal(pk_wif, isPubKeyCompressed = false) {
let pk = Bitcoin.Base58.decode(pk_wif)
pk.shift()
pk.splice(-4, 4)
//If the private key corresponded to a compressed public key, also drop the last byte (it should be 0x01).
if (isPubKeyCompressed == true) pk.pop()
pk.unshift(0)
let privateKeyDecimal = BigInteger(pk).toString()
let privateKeyHex = Crypto.util.bytesToHex(pk)
return {
privateKeyDecimal: privateKeyDecimal,
privateKeyHex: privateKeyHex
}
}
//generate a random Interger within range
floCrypto.randInt = function (min, max) {
min = Math.ceil(min);
max = Math.floor(max);
return Math.floor(securedMathRandom() * (max - min + 1)) + min;
}
//generate a random String within length (options : alphaNumeric chars only)
floCrypto.randString = function (length, alphaNumeric = true) {
var result = '';
var characters = alphaNumeric ? 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789' :
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_+-./*?@#&$<>=[]{}():';
for (var i = 0; i < length; i++)
result += characters.charAt(Math.floor(securedMathRandom() * characters.length));
return result;
}
//Encrypt Data using public-key
floCrypto.encryptData = function (data, receiverPublicKeyHex) {
var senderECKeyData = getSenderPublicKeyString();
var senderDerivedKey = deriveSharedKeySender(receiverPublicKeyHex, senderECKeyData.privateKey);
let senderKey = senderDerivedKey.XValue + senderDerivedKey.YValue;
let secret = Crypto.AES.encrypt(data, senderKey);
return {
secret: secret,
senderPublicKeyString: senderECKeyData.senderPublicKeyString
};
}
//Decrypt Data using private-key
floCrypto.decryptData = function (data, privateKeyHex) {
var receiverECKeyData = {};
if (typeof privateKeyHex !== "string") throw new Error("No private key found.");
let privateKey = wifToDecimal(privateKeyHex, true);
if (typeof privateKey.privateKeyDecimal !== "string") throw new Error("Failed to detremine your private key.");
receiverECKeyData.privateKey = privateKey.privateKeyDecimal;
var receiverDerivedKey = deriveSharedKeyReceiver(data.senderPublicKeyString, receiverECKeyData.privateKey);
let receiverKey = receiverDerivedKey.XValue + receiverDerivedKey.YValue;
let decryptMsg = Crypto.AES.decrypt(data.secret, receiverKey);
return decryptMsg;
}
//Sign data using private-key
floCrypto.signData = function (data, privateKeyHex) {
var key = new Bitcoin.ECKey(privateKeyHex);
var messageHash = Crypto.SHA256(data);
var messageSign = Bitcoin.ECDSA.sign(messageHash, key.priv);
var sighex = Crypto.util.bytesToHex(messageSign);
return sighex;
}
//Verify signatue of the data using public-key
floCrypto.verifySign = function (data, signatureHex, publicKeyHex) {
var msgHash = Crypto.SHA256(data);
var sigBytes = Crypto.util.hexToBytes(signatureHex);
var publicKeyPoint = ecparams.getCurve().decodePointHex(publicKeyHex);
var verify = Bitcoin.ECDSA.verify(msgHash, sigBytes, publicKeyPoint);
return verify;
}
//Generates a new flo ID and returns private-key, public-key and floID
const generateNewID = floCrypto.generateNewID = function () {
var key = new Bitcoin.ECKey(false);
key.setCompressed(true);
return {
floID: key.getBitcoinAddress(),
pubKey: key.getPubKeyHex(),
privKey: key.getBitcoinWalletImportFormat()
}
}
Object.defineProperties(floCrypto, {
newID: {
get: () => generateNewID()
},
hashID: {
value: (str) => {
let bytes = ripemd160(Crypto.SHA256(str, { asBytes: true }), { asBytes: true });
bytes.unshift(bitjs.pub);
var hash = Crypto.SHA256(Crypto.SHA256(bytes, {
asBytes: true
}), {
asBytes: true
});
var checksum = hash.slice(0, 4);
return bitjs.Base58.encode(bytes.concat(checksum));
}
},
tmpID: {
get: () => {
let bytes = Crypto.util.randomBytes(20);
bytes.unshift(bitjs.pub);
var hash = Crypto.SHA256(Crypto.SHA256(bytes, {
asBytes: true
}), {
asBytes: true
});
var checksum = hash.slice(0, 4);
return bitjs.Base58.encode(bytes.concat(checksum));
}
}
});
//Returns public-key from private-key
floCrypto.getPubKeyHex = function (privateKeyHex) {
if (!privateKeyHex)
return null;
var key = new Bitcoin.ECKey(privateKeyHex);
if (key.priv == null)
return null;
key.setCompressed(true);
return key.getPubKeyHex();
}
//Returns flo-ID from public-key or private-key
floCrypto.getFloID = function (keyHex) {
if (!keyHex)
return null;
try {
var key = new Bitcoin.ECKey(keyHex);
if (key.priv == null)
key.setPub(keyHex);
return key.getBitcoinAddress();
} catch {
return null;
}
}
floCrypto.getAddress = function (privateKeyHex, strict = false) {
if (!privateKeyHex)
return;
var key = new Bitcoin.ECKey(privateKeyHex);
if (key.priv == null)
return null;
key.setCompressed(true);
let pubKey = key.getPubKeyHex(),
version = bitjs.Base58.decode(privateKeyHex)[0];
switch (version) {
case coinjs.priv: //BTC
return coinjs.bech32Address(pubKey).address;
case bitjs.priv: //FLO
return bitjs.pubkey2address(pubKey);
default:
return strict ? false : bitjs.pubkey2address(pubKey); //default to FLO address (if strict=false)
}
}
//Verify the private-key for the given public-key or flo-ID
floCrypto.verifyPrivKey = function (privateKeyHex, pubKey_floID, isfloID = true) {
if (!privateKeyHex || !pubKey_floID)
return false;
try {
var key = new Bitcoin.ECKey(privateKeyHex);
if (key.priv == null)
return false;
key.setCompressed(true);
if (isfloID && pubKey_floID == key.getBitcoinAddress())
return true;
else if (!isfloID && pubKey_floID.toUpperCase() == key.getPubKeyHex().toUpperCase())
return true;
else
return false;
} catch {
return null;
}
}
floCrypto.getMultisigAddress = function (publicKeyList, requiredSignatures) {
if (!Array.isArray(publicKeyList) || !publicKeyList.length)
return null;
if (!Number.isInteger(requiredSignatures) || requiredSignatures < 1 || requiredSignatures > publicKeyList.length)
return null;
try {
var multisig = bitjs.pubkeys2multisig(publicKeyList, requiredSignatures);
return multisig;
} catch {
return null;
}
}
floCrypto.decodeRedeemScript = function (redeemScript) {
try {
var decoded = bitjs.transaction().decodeRedeemScript(redeemScript);
return decoded;
} catch {
return null;
}
}
//Check if the given flo-id is valid or not
floCrypto.validateFloID = function (floID, regularOnly = false) {
if (!floID)
return false;
try {
let addr = new Bitcoin.Address(floID);
if (regularOnly && addr.version != Bitcoin.Address.standardVersion)
return false;
return true;
} catch {
return false;
}
}
//Check if the given address (any blockchain) is valid or not
floCrypto.validateAddr = function (address, std = true, bech = true) {
let raw = decodeAddress(address);
if (!raw)
return false;
if (typeof raw.version !== 'undefined') { //legacy or segwit
if (std == false)
return false;
else if (std === true || (!Array.isArray(std) && std === raw.version) || (Array.isArray(std) && std.includes(raw.version)))
return true;
else
return false;
} else if (typeof raw.bech_version !== 'undefined') { //bech32
if (bech === false)
return false;
else if (bech === true || (!Array.isArray(bech) && bech === raw.bech_version) || (Array.isArray(bech) && bech.includes(raw.bech_version)))
return true;
else
return false;
} else //unknown
return false;
}
//Check the public-key (or redeem-script) for the address (any blockchain)
floCrypto.verifyPubKey = function (pubKeyHex, address) {
let raw = decodeAddress(address);
if (!raw)
return;
let pub_hash = Crypto.util.bytesToHex(ripemd160(Crypto.SHA256(Crypto.util.hexToBytes(pubKeyHex), { asBytes: true })));
if (typeof raw.bech_version !== 'undefined' && raw.bytes.length == 32) //bech32-multisig
raw.hex = Crypto.util.bytesToHex(ripemd160(raw.bytes, { asBytes: true }));
return pub_hash === raw.hex;
}
//Convert the given address (any blockchain) to equivalent floID
floCrypto.toFloID = function (address, options = null) {
if (!address)
return;
let raw = decodeAddress(address);
if (!raw)
return;
else if (options) { //if (optional) version check is passed
if (typeof raw.version !== 'undefined' && (!options.std || !options.std.includes(raw.version)))
return;
if (typeof raw.bech_version !== 'undefined' && (!options.bech || !options.bech.includes(raw.bech_version)))
return;
}
raw.bytes.unshift(bitjs.pub);
let hash = Crypto.SHA256(Crypto.SHA256(raw.bytes, {
asBytes: true
}), {
asBytes: true
});
return bitjs.Base58.encode(raw.bytes.concat(hash.slice(0, 4)));
}
//Convert raw address bytes to floID
floCrypto.rawToFloID = function (raw_bytes) {
if (typeof raw_bytes === 'string')
raw_bytes = Crypto.util.hexToBytes(raw_bytes);
if (raw_bytes.length != 20)
return null;
raw_bytes.unshift(bitjs.pub);
let hash = Crypto.SHA256(Crypto.SHA256(raw_bytes, {
asBytes: true
}), {
asBytes: true
});
return bitjs.Base58.encode(raw_bytes.concat(hash.slice(0, 4)));
}
//Convert the given multisig address (any blockchain) to equivalent multisig floID
floCrypto.toMultisigFloID = function (address, options = null) {
if (!address)
return;
let raw = decodeAddress(address);
if (!raw)
return;
else if (options) { //if (optional) version check is passed
if (typeof raw.version !== 'undefined' && (!options.std || !options.std.includes(raw.version)))
return;
if (typeof raw.bech_version !== 'undefined' && (!options.bech || !options.bech.includes(raw.bech_version)))
return;
}
if (typeof raw.bech_version !== 'undefined') {
if (raw.bytes.length != 32) return; //multisig bech address have 32 bytes
//multisig-bech:hash=SHA256 whereas multisig:hash=r160(SHA265), thus ripemd160 the bytes from multisig-bech
raw.bytes = ripemd160(raw.bytes, {
asBytes: true
});
}
raw.bytes.unshift(bitjs.multisig);
let hash = Crypto.SHA256(Crypto.SHA256(raw.bytes, {
asBytes: true
}), {
asBytes: true
});
return bitjs.Base58.encode(raw.bytes.concat(hash.slice(0, 4)));
}
//Checks if the given addresses (any blockchain) are same (w.r.t keys)
floCrypto.isSameAddr = function (addr1, addr2) {
if (!addr1 || !addr2)
return;
let raw1 = decodeAddress(addr1),
raw2 = decodeAddress(addr2);
if (!raw1 || !raw2)
return false;
else {
if (typeof raw1.bech_version !== 'undefined' && raw1.bytes.length == 32) //bech32-multisig
raw1.hex = Crypto.util.bytesToHex(ripemd160(raw1.bytes, { asBytes: true }));
if (typeof raw2.bech_version !== 'undefined' && raw2.bytes.length == 32) //bech32-multisig
raw2.hex = Crypto.util.bytesToHex(ripemd160(raw2.bytes, { asBytes: true }));
return raw1.hex === raw2.hex;
}
}
const decodeAddress = floCrypto.decodeAddr = function (address) {
if (!address)
return;
else if (address.length == 33 || address.length == 34) { //legacy encoding
let decode = bitjs.Base58.decode(address);
let bytes = decode.slice(0, decode.length - 4);
let checksum = decode.slice(decode.length - 4),
hash = Crypto.SHA256(Crypto.SHA256(bytes, {
asBytes: true
}), {
asBytes: true
});
return (hash[0] != checksum[0] || hash[1] != checksum[1] || hash[2] != checksum[2] || hash[3] != checksum[3]) ? null : {
version: bytes.shift(),
hex: Crypto.util.bytesToHex(bytes),
bytes
}
} else if (address.length == 42 || address.length == 62) { //bech encoding
let decode = coinjs.bech32_decode(address);
if (decode) {
let bytes = decode.data;
let bech_version = bytes.shift();
bytes = coinjs.bech32_convert(bytes, 5, 8, false);
return {
bech_version,
hrp: decode.hrp,
hex: Crypto.util.bytesToHex(bytes),
bytes
}
} else
return null;
}
}
//Split the str using shamir's Secret and Returns the shares
floCrypto.createShamirsSecretShares = function (str, total_shares, threshold_limit) {
try {
if (str.length > 0) {
var strHex = shamirSecretShare.str2hex(str);
var shares = shamirSecretShare.share(strHex, total_shares, threshold_limit);
return shares;
}
return false;
} catch {
return false
}
}
//Returns the retrived secret by combining the shamirs shares
const retrieveShamirSecret = floCrypto.retrieveShamirSecret = function (sharesArray) {
try {
if (sharesArray.length > 0) {
var comb = shamirSecretShare.combine(sharesArray.slice(0, sharesArray.length));
comb = shamirSecretShare.hex2str(comb);
return comb;
}
return false;
} catch {
return false;
}
}
//Verifies the shares and str
floCrypto.verifyShamirsSecret = function (sharesArray, str) {
if (!str)
return null;
else if (retrieveShamirSecret(sharesArray) === str)
return true;
else
return false;
}
const validateASCII = floCrypto.validateASCII = function (string, bool = true) {
if (typeof string !== "string")
return null;
if (bool) {
let x;
for (let i = 0; i < string.length; i++) {
x = string.charCodeAt(i);
if (x < 32 || x > 127)
return false;
}
return true;
} else {
let x, invalids = {};
for (let i = 0; i < string.length; i++) {
x = string.charCodeAt(i);
if (x < 32 || x > 127)
if (x in invalids)
invalids[string[i]].push(i)
else
invalids[string[i]] = [i];
}
if (Object.keys(invalids).length)
return invalids;
else
return true;
}
}
floCrypto.convertToASCII = function (string, mode = 'soft-remove') {
let chars = validateASCII(string, false);
if (chars === true)
return string;
else if (chars === null)
return null;
let convertor, result = string,
refAlt = {};
ascii_alternatives.split('\n').forEach(a => refAlt[a[0]] = a.slice(2));
mode = mode.toLowerCase();
if (mode === "hard-unicode")
convertor = (c) => `\\u${('000' + c.charCodeAt().toString(16)).slice(-4)}`;
else if (mode === "soft-unicode")
convertor = (c) => refAlt[c] || `\\u${('000' + c.charCodeAt().toString(16)).slice(-4)}`;
else if (mode === "hard-remove")
convertor = c => "";
else if (mode === "soft-remove")
convertor = c => refAlt[c] || "";
else
return null;
for (let c in chars)
result = result.replaceAll(c, convertor(c));
return result;
}
floCrypto.revertUnicode = function (string) {
return string.replace(/\\u[\dA-F]{4}/gi,
m => String.fromCharCode(parseInt(m.replace(/\\u/g, ''), 16)));
}
})('object' === typeof module ? module.exports : window.floCrypto = {});