dac87a8595
- Added getMultisigAddress(pubkeys, required_sigs): returns a multisig address from given pubkey list and required signatures - Added decodeRedeemScript (redeemScript): decodes the given redeemscript (of multisig) - Updated validateFloID: now validates FLO regular and multisig address. optional argument regularOnly(default=false) if true validates only FLO regular address.
466 lines
17 KiB
JavaScript
466 lines
17 KiB
JavaScript
(function (EXPORTS) { //floCrypto v2.3.4
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/* FLO Crypto Operators */
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'use strict';
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const floCrypto = EXPORTS;
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const p = BigInteger("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F", 16);
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const ecparams = EllipticCurve.getSECCurveByName("secp256k1");
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const ascii_alternatives = `‘ '\n’ '\n“ "\n” "\n– --\n— ---\n≥ >=\n≤ <=\n≠ !=\n× *\n÷ /\n← <-\n→ ->\n↔ <->\n⇒ =>\n⇐ <=\n⇔ <=>`;
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const exponent1 = () => p.add(BigInteger.ONE).divide(BigInteger("4"));
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coinjs.compressed = true; //defaulting coinjs compressed to true;
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function calculateY(x) {
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let exp = exponent1();
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// x is x value of public key in BigInteger format without 02 or 03 or 04 prefix
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return x.modPow(BigInteger("3"), p).add(BigInteger("7")).mod(p).modPow(exp, p)
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}
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function getUncompressedPublicKey(compressedPublicKey) {
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// Fetch x from compressedPublicKey
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let pubKeyBytes = Crypto.util.hexToBytes(compressedPublicKey);
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const prefix = pubKeyBytes.shift() // remove prefix
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let prefix_modulus = prefix % 2;
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pubKeyBytes.unshift(0) // add prefix 0
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let x = new BigInteger(pubKeyBytes)
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let xDecimalValue = x.toString()
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// Fetch y
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let y = calculateY(x);
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let yDecimalValue = y.toString();
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// verify y value
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let resultBigInt = y.mod(BigInteger("2"));
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let check = resultBigInt.toString() % 2;
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if (prefix_modulus !== check)
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yDecimalValue = y.negate().mod(p).toString();
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return {
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x: xDecimalValue,
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y: yDecimalValue
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};
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}
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function getSenderPublicKeyString() {
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let privateKey = ellipticCurveEncryption.senderRandom();
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var senderPublicKeyString = ellipticCurveEncryption.senderPublicString(privateKey);
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return {
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privateKey: privateKey,
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senderPublicKeyString: senderPublicKeyString
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}
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}
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function deriveSharedKeySender(receiverPublicKeyHex, senderPrivateKey) {
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let receiverPublicKeyString = getUncompressedPublicKey(receiverPublicKeyHex);
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var senderDerivedKey = ellipticCurveEncryption.senderSharedKeyDerivation(
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receiverPublicKeyString.x, receiverPublicKeyString.y, senderPrivateKey);
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return senderDerivedKey;
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}
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function deriveSharedKeyReceiver(senderPublicKeyString, receiverPrivateKey) {
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return ellipticCurveEncryption.receiverSharedKeyDerivation(
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senderPublicKeyString.XValuePublicString, senderPublicKeyString.YValuePublicString, receiverPrivateKey);
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}
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function getReceiverPublicKeyString(privateKey) {
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return ellipticCurveEncryption.receiverPublicString(privateKey);
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}
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function wifToDecimal(pk_wif, isPubKeyCompressed = false) {
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let pk = Bitcoin.Base58.decode(pk_wif)
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pk.shift()
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pk.splice(-4, 4)
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//If the private key corresponded to a compressed public key, also drop the last byte (it should be 0x01).
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if (isPubKeyCompressed == true) pk.pop()
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pk.unshift(0)
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let privateKeyDecimal = BigInteger(pk).toString()
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let privateKeyHex = Crypto.util.bytesToHex(pk)
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return {
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privateKeyDecimal: privateKeyDecimal,
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privateKeyHex: privateKeyHex
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}
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}
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//generate a random Interger within range
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floCrypto.randInt = function (min, max) {
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min = Math.ceil(min);
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max = Math.floor(max);
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return Math.floor(securedMathRandom() * (max - min + 1)) + min;
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}
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//generate a random String within length (options : alphaNumeric chars only)
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floCrypto.randString = function (length, alphaNumeric = true) {
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var result = '';
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var characters = alphaNumeric ? 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789' :
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'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_+-./*?@#&$<>=[]{}():';
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for (var i = 0; i < length; i++)
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result += characters.charAt(Math.floor(securedMathRandom() * characters.length));
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return result;
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}
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//Encrypt Data using public-key
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floCrypto.encryptData = function (data, receiverPublicKeyHex) {
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var senderECKeyData = getSenderPublicKeyString();
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var senderDerivedKey = deriveSharedKeySender(receiverPublicKeyHex, senderECKeyData.privateKey);
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let senderKey = senderDerivedKey.XValue + senderDerivedKey.YValue;
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let secret = Crypto.AES.encrypt(data, senderKey);
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return {
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secret: secret,
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senderPublicKeyString: senderECKeyData.senderPublicKeyString
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};
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}
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//Decrypt Data using private-key
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floCrypto.decryptData = function (data, privateKeyHex) {
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var receiverECKeyData = {};
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if (typeof privateKeyHex !== "string") throw new Error("No private key found.");
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let privateKey = wifToDecimal(privateKeyHex, true);
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if (typeof privateKey.privateKeyDecimal !== "string") throw new Error("Failed to detremine your private key.");
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receiverECKeyData.privateKey = privateKey.privateKeyDecimal;
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var receiverDerivedKey = deriveSharedKeyReceiver(data.senderPublicKeyString, receiverECKeyData.privateKey);
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let receiverKey = receiverDerivedKey.XValue + receiverDerivedKey.YValue;
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let decryptMsg = Crypto.AES.decrypt(data.secret, receiverKey);
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return decryptMsg;
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}
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//Sign data using private-key
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floCrypto.signData = function (data, privateKeyHex) {
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var key = new Bitcoin.ECKey(privateKeyHex);
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var messageHash = Crypto.SHA256(data);
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var messageSign = Bitcoin.ECDSA.sign(messageHash, key.priv);
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var sighex = Crypto.util.bytesToHex(messageSign);
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return sighex;
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}
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//Verify signatue of the data using public-key
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floCrypto.verifySign = function (data, signatureHex, publicKeyHex) {
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var msgHash = Crypto.SHA256(data);
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var sigBytes = Crypto.util.hexToBytes(signatureHex);
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var publicKeyPoint = ecparams.getCurve().decodePointHex(publicKeyHex);
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var verify = Bitcoin.ECDSA.verify(msgHash, sigBytes, publicKeyPoint);
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return verify;
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}
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//Generates a new flo ID and returns private-key, public-key and floID
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const generateNewID = floCrypto.generateNewID = function () {
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var key = new Bitcoin.ECKey(false);
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key.setCompressed(true);
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return {
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floID: key.getBitcoinAddress(),
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pubKey: key.getPubKeyHex(),
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privKey: key.getBitcoinWalletImportFormat()
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}
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}
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Object.defineProperties(floCrypto, {
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newID: {
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get: () => generateNewID()
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},
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tmpID: {
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get: () => {
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let bytes = Crypto.util.randomBytes(20);
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bytes.unshift(bitjs.pub);
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var hash = Crypto.SHA256(Crypto.SHA256(bytes, {
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asBytes: true
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}), {
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asBytes: true
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});
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var checksum = hash.slice(0, 4);
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return bitjs.Base58.encode(bytes.concat(checksum));
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}
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}
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});
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//Returns public-key from private-key
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floCrypto.getPubKeyHex = function (privateKeyHex) {
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if (!privateKeyHex)
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return null;
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var key = new Bitcoin.ECKey(privateKeyHex);
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if (key.priv == null)
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return null;
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key.setCompressed(true);
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return key.getPubKeyHex();
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}
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//Returns flo-ID from public-key or private-key
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floCrypto.getFloID = function (keyHex) {
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if (!keyHex)
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return null;
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try {
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var key = new Bitcoin.ECKey(keyHex);
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if (key.priv == null)
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key.setPub(keyHex);
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return key.getBitcoinAddress();
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} catch {
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return null;
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}
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}
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floCrypto.getAddress = function (privateKeyHex, strict = false) {
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if (!privateKeyHex)
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return;
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var key = new Bitcoin.ECKey(privateKeyHex);
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if (key.priv == null)
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return null;
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key.setCompressed(true);
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let pubKey = key.getPubKeyHex(),
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version = bitjs.Base58.decode(privateKeyHex)[0];
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switch (version) {
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case coinjs.priv: //BTC
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return coinjs.bech32Address(pubKey).address;
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case bitjs.priv: //FLO
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return bitjs.pubkey2address(pubKey);
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default:
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return strict ? false : bitjs.pubkey2address(pubKey); //default to FLO address (if strict=false)
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}
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}
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//Verify the private-key for the given public-key or flo-ID
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floCrypto.verifyPrivKey = function (privateKeyHex, pubKey_floID, isfloID = true) {
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if (!privateKeyHex || !pubKey_floID)
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return false;
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try {
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var key = new Bitcoin.ECKey(privateKeyHex);
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if (key.priv == null)
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return false;
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key.setCompressed(true);
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if (isfloID && pubKey_floID == key.getBitcoinAddress())
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return true;
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else if (!isfloID && pubKey_floID == key.getPubKeyHex())
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return true;
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else
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return false;
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} catch {
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return null;
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}
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}
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floCrypto.getMultisigAddress = function (publicKeyList, requiredSignatures) {
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if (!Array.isArray(publicKeyList) || !publicKeyList.length)
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return null;
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if (!Number.isInteger(requiredSignatures) || requiredSignatures < 1)
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return null;
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try {
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var multisig = bitjs.pubkeys2multisig(publicKeyList, requiredSignatures);
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return multisig;
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} catch {
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return null;
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}
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}
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floCrypto.decodeRedeemScript = function (redeemScript) {
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try {
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var decoded = bitjs.transaction().decodeRedeemScript(redeemScript);
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return decoded;
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} catch {
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return null;
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}
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}
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//Check if the given flo-id is valid or not
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floCrypto.validateFloID = function (floID, regularOnly = false) {
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if (!floID)
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return false;
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try {
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let addr = new Bitcoin.Address(floID);
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if (regularOnly && addr.version != Bitcoin.Address.standardVersion)
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return false;
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return true;
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} catch {
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return false;
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}
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}
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//Check if the given address (any blockchain) is valid or not
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floCrypto.validateAddr = function (address, std = true, bech = true) {
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let raw = decodeAddress(address);
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if (!raw)
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return false;
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if (typeof raw.version !== 'undefined') { //legacy or segwit
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if (std == false)
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return false;
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else if (std === true || (!Array.isArray(std) && std === raw.version) || (Array.isArray(std) && std.includes(raw.version)))
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return true;
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else
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return false;
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} else if (typeof raw.bech_version !== 'undefined') { //bech32
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if (bech === false)
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return false;
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else if (bech === true || (!Array.isArray(bech) && bech === raw.bech_version) || (Array.isArray(bech) && bech.includes(raw.bech_version)))
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return true;
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else
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return false;
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} else //unknown
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return false;
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}
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//Check the public-key for the address (any blockchain)
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floCrypto.verifyPubKey = function (pubKeyHex, address) {
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let raw = decodeAddress(address),
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pub_hash = Crypto.util.bytesToHex(ripemd160(Crypto.SHA256(Crypto.util.hexToBytes(pubKeyHex), {
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asBytes: true
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})));
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return raw ? pub_hash === raw.hex : false;
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}
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//Convert the given address (any blockchain) to equivalent floID
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floCrypto.toFloID = function (address, options = null) {
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if (!address)
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return;
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let raw = decodeAddress(address);
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if (!raw)
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return;
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else if (options) {
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if (typeof raw.version !== 'undefined' && (!options.std || !options.std.includes(raw.version)))
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return;
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if (typeof raw.bech_version !== 'undefined' && (!options.bech || !options.bech.includes(raw.bech_version)))
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return;
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}
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raw.bytes.unshift(bitjs.pub);
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let hash = Crypto.SHA256(Crypto.SHA256(raw.bytes, {
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asBytes: true
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}), {
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asBytes: true
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});
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return bitjs.Base58.encode(raw.bytes.concat(hash.slice(0, 4)));
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}
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//Checks if the given addresses (any blockchain) are same (w.r.t keys)
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floCrypto.isSameAddr = function (addr1, addr2) {
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if (!addr1 || !addr2)
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return;
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let raw1 = decodeAddress(addr1),
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raw2 = decodeAddress(addr2);
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if (!raw1 || !raw2)
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return false;
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else
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return raw1.hex === raw2.hex;
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}
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const decodeAddress = floCrypto.decodeAddr = function (address) {
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if (!address)
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return;
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else if (address.length == 33 || address.length == 34) { //legacy encoding
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let decode = bitjs.Base58.decode(address);
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let bytes = decode.slice(0, decode.length - 4);
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let checksum = decode.slice(decode.length - 4),
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hash = Crypto.SHA256(Crypto.SHA256(bytes, {
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asBytes: true
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}), {
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asBytes: true
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});
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return (hash[0] != checksum[0] || hash[1] != checksum[1] || hash[2] != checksum[2] || hash[3] != checksum[3]) ? null : {
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version: bytes.shift(),
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hex: Crypto.util.bytesToHex(bytes),
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bytes
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}
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} else if (address.length == 42) { //bech encoding
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let decode = coinjs.bech32_decode(address);
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if (decode) {
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let bytes = decode.data;
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let bech_version = bytes.shift();
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bytes = coinjs.bech32_convert(bytes, 5, 8, false);
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return {
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bech_version,
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hrp: decode.hrp,
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hex: Crypto.util.bytesToHex(bytes),
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bytes
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}
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} else
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return null;
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}
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}
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//Split the str using shamir's Secret and Returns the shares
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floCrypto.createShamirsSecretShares = function (str, total_shares, threshold_limit) {
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try {
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if (str.length > 0) {
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var strHex = shamirSecretShare.str2hex(str);
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var shares = shamirSecretShare.share(strHex, total_shares, threshold_limit);
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return shares;
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}
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return false;
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} catch {
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return false
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}
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}
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//Returns the retrived secret by combining the shamirs shares
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const retrieveShamirSecret = floCrypto.retrieveShamirSecret = function (sharesArray) {
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try {
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if (sharesArray.length > 0) {
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var comb = shamirSecretShare.combine(sharesArray.slice(0, sharesArray.length));
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comb = shamirSecretShare.hex2str(comb);
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return comb;
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}
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return false;
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} catch {
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return false;
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}
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}
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//Verifies the shares and str
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floCrypto.verifyShamirsSecret = function (sharesArray, str) {
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if (!str)
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return null;
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else if (retrieveShamirSecret(sharesArray) === str)
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return true;
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else
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return false;
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}
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const validateASCII = floCrypto.validateASCII = function (string, bool = true) {
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if (typeof string !== "string")
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return null;
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if (bool) {
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let x;
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for (let i = 0; i < string.length; i++) {
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x = string.charCodeAt(i);
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if (x < 32 || x > 127)
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return false;
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}
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return true;
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} else {
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let x, invalids = {};
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for (let i = 0; i < string.length; i++) {
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x = string.charCodeAt(i);
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if (x < 32 || x > 127)
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if (x in invalids)
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invalids[string[i]].push(i)
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else
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invalids[string[i]] = [i];
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}
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if (Object.keys(invalids).length)
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return invalids;
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else
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return true;
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}
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}
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floCrypto.convertToASCII = function (string, mode = 'soft-remove') {
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let chars = validateASCII(string, false);
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if (chars === true)
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return string;
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else if (chars === null)
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return null;
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let convertor, result = string,
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refAlt = {};
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ascii_alternatives.split('\n').forEach(a => refAlt[a[0]] = a.slice(2));
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mode = mode.toLowerCase();
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if (mode === "hard-unicode")
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convertor = (c) => `\\u${('000' + c.charCodeAt().toString(16)).slice(-4)}`;
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else if (mode === "soft-unicode")
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convertor = (c) => refAlt[c] || `\\u${('000' + c.charCodeAt().toString(16)).slice(-4)}`;
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else if (mode === "hard-remove")
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convertor = c => "";
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else if (mode === "soft-remove")
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convertor = c => refAlt[c] || "";
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else
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return null;
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for (let c in chars)
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result = result.replaceAll(c, convertor(c));
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return result;
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}
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floCrypto.revertUnicode = function (string) {
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return string.replace(/\\u[\dA-F]{4}/gi,
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m => String.fromCharCode(parseInt(m.replace(/\\u/g, ''), 16)));
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}
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})('object' === typeof module ? module.exports : window.floCrypto = {}); |