@tomo-inc/ledger-bitcoin-babylon
Version:
Ledger Hardware Wallet Babylon Application Client
211 lines • 20 kB
JavaScript
;
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}) : function(o, v) {
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var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
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};
Object.defineProperty(exports, "__esModule", { value: true });
exports.createTaprootBip322Signature = exports.createSegwitBip322Signature = exports.bip0322Hash = void 0;
const ecc = __importStar(require("@bitcoinerlab/secp256k1"));
const bitcoinjs_lib_1 = require("bitcoinjs-lib");
const bip32_1 = require("bip32");
const varuint_bitcoin_1 = require("varuint-bitcoin");
const __1 = require("../..");
const _1 = require("./");
const types_1 = require("./types");
const BBN_MESSAGE_ADDR_STR_MIN_SIZE = 32;
const BBN_MSG_HASH_BYTE_SIZE = 64;
const bip32 = (0, bip32_1.BIP32Factory)(ecc);
const encodeVarString = (b) => Buffer.concat([(0, varuint_bitcoin_1.encode)(b.byteLength), b]);
const DUMMY_INPUT_HASH = Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex');
const DUMMY_INPUT_INDEX = 0xffffffff;
const DUMMY_INPUT_SEQUENCE = 0;
function bip0322Hash(message) {
const { sha256 } = bitcoinjs_lib_1.crypto;
const tag = 'BIP0322-signed-message';
const tagHash = sha256(Buffer.from(tag));
const result = sha256(Buffer.concat([tagHash, tagHash, Buffer.from(message)]));
return result.toString('hex');
}
exports.bip0322Hash = bip0322Hash;
const createMessageSignature = async (app, accountPolicy, message, witnessScript, inputArgs, isSegwit) => {
const scriptSig = Buffer.concat([
Buffer.from('0020', 'hex'),
Buffer.from(bip0322Hash(message), 'hex'),
]);
const txToSpend = new bitcoinjs_lib_1.Transaction();
txToSpend.version = 0;
txToSpend.addInput(DUMMY_INPUT_HASH, DUMMY_INPUT_INDEX, DUMMY_INPUT_SEQUENCE, scriptSig);
txToSpend.addOutput(witnessScript, 0);
const psbtToSign = new bitcoinjs_lib_1.Psbt();
psbtToSign.setVersion(0);
psbtToSign.addInput(Object.assign({ hash: txToSpend.getHash(), index: 0, sequence: 0, witnessUtxo: {
script: witnessScript,
value: 0,
} }, inputArgs));
psbtToSign.addOutput({ script: Buffer.from('6a', 'hex'), value: 0 });
const signatures = await app.signPsbt(psbtToSign.toBase64(), accountPolicy, null);
for (const signature of signatures) {
if (isSegwit) {
psbtToSign.updateInput(signature[0], {
partialSig: [signature[1]],
});
}
else {
psbtToSign.updateInput(signature[0], {
tapKeySig: signature[1].signature,
});
}
}
psbtToSign.finalizeAllInputs();
const txToSign = psbtToSign.extractTransaction();
const len = (0, varuint_bitcoin_1.encode)(txToSign.ins[0].witness.length);
const result = Buffer.concat([
len,
...txToSign.ins[0].witness.map((w) => encodeVarString(w)),
]);
const signature = result.toString('base64');
return {
signature,
protocol: types_1.MessageSigningProtocols.BIP322,
};
};
function getPublicKeyFromXpubAtIndex(xpub, index, isTestnet) {
const btcNetwork = isTestnet ? bitcoinjs_lib_1.networks.testnet : bitcoinjs_lib_1.networks.bitcoin;
const { publicKey } = bip32
.fromBase58(xpub, btcNetwork)
.derivePath(`0/${index}`);
return publicKey;
}
function getNativeSegwitAccountDataFromXpub(xpub, index, isTestnet = false) {
(0, bitcoinjs_lib_1.initEccLib)(ecc);
const publicKey = getPublicKeyFromXpubAtIndex(xpub, index, isTestnet);
const btcNetwork = isTestnet ? bitcoinjs_lib_1.networks.testnet : bitcoinjs_lib_1.networks.bitcoin;
const p2wpkh = bitcoinjs_lib_1.payments.p2wpkh({ pubkey: publicKey, network: btcNetwork });
const address = p2wpkh.address;
if (!address) {
throw new Error('Address is null');
}
if (!p2wpkh.output) {
throw new Error('p2wpkh output is null');
}
return {
publicKey,
address,
witnessScript: p2wpkh.output,
};
}
async function createSegwitBip322Signature({ message, app, derivationPath = `m/84'/0'/0'`, isTestnet = false, }) {
const masterFingerPrint = await app.getMasterFingerprint();
const extendedPublicKey = await app.getExtendedPubkey(derivationPath);
const { publicKey, witnessScript } = getNativeSegwitAccountDataFromXpub(extendedPublicKey, 0, isTestnet);
const inputDerivation = {
path: `${derivationPath}/0/0`,
pubkey: publicKey,
masterFingerprint: Buffer.from(masterFingerPrint, 'hex'),
};
const accountPolicy = new __1.WalletPolicy('Sign message', 'wpkh(@0/**)', [
`[${derivationPath.replace('m/', `${masterFingerPrint}/`)}]${extendedPublicKey}`,
]);
return createMessageSignature(app, accountPolicy, message, witnessScript, {
bip32Derivation: [inputDerivation],
}, true);
}
exports.createSegwitBip322Signature = createSegwitBip322Signature;
function getTaprootAccountDataFromXpub(xpub, index, isTestnet = false) {
(0, bitcoinjs_lib_1.initEccLib)(ecc);
const publicKey = getPublicKeyFromXpubAtIndex(xpub, index, isTestnet);
const p2tr = bitcoinjs_lib_1.payments.p2tr({
internalPubkey: publicKey.slice(1),
network: isTestnet ? bitcoinjs_lib_1.networks.testnet : bitcoinjs_lib_1.networks.bitcoin,
});
if (!p2tr.output || !p2tr.address || !p2tr.internalPubkey) {
throw new Error('p2tr output, address or internalPubkey is null');
}
return {
publicKey,
address: p2tr.address,
internalPubkey: p2tr.internalPubkey,
taprootScript: p2tr.output,
};
}
function _padHexString(hexString, dataLength) {
const len = dataLength;
const lenHex = len.toString(16).padStart(2, '0');
let result = lenHex + hexString;
const padNeeded = 64 - result.length;
if (padNeeded > 0) {
result += 'fc'.repeat(padNeeded / 2);
}
return result;
}
function _formatMessage(data, prefix) {
let hexString = '';
for (let i = 0; i < data.length; i++) {
const byte = data[i].toString(16).padStart(2, '0');
hexString += byte;
}
const prefixBuffer = Buffer.from(prefix, 'ascii');
const prefixLenHex = prefixBuffer.length.toString(16).padStart(2, '0');
hexString += prefixLenHex + prefixBuffer.toString('hex');
return _padHexString(hexString, data.length);
}
async function createTaprootBip322Signature({ message, app, derivationPath = `m/86'/0'/0'`, isTestnet = false, }) {
const OriginalMessage = message;
let hashHex;
let formattedHash;
if (message.length > BBN_MESSAGE_ADDR_STR_MIN_SIZE + BBN_MSG_HASH_BYTE_SIZE) {
hashHex = message.slice(0, BBN_MSG_HASH_BYTE_SIZE);
message = message.slice(BBN_MSG_HASH_BYTE_SIZE);
formattedHash = (0, _1.formatKey)(hashHex, isTestnet);
}
else {
hashHex = Buffer.alloc(32, 0xff).toString('hex');
formattedHash = (0, _1.formatKey)(hashHex, isTestnet);
}
const masterFingerPrint = await app.getMasterFingerprint();
const extendedPublicKey = await app.getExtendedPubkey(derivationPath);
const { internalPubkey, taprootScript } = getTaprootAccountDataFromXpub(extendedPublicKey, 0, isTestnet);
// Need to update input derivation path so the ledger can recognize the inputs to sign
const inputDerivation = {
path: `${derivationPath}/0/0`,
pubkey: internalPubkey,
masterFingerprint: Buffer.from(masterFingerPrint, 'hex'),
leafHashes: [],
};
const addressResult = (0, _1.validadteAddress)(message);
if (!addressResult || !addressResult.data) {
throw new Error('The message should be a valid bbn address.');
}
const address = addressResult.data;
const accountPolicy = new __1.WalletPolicy('Sign message', 'tr(@0/**,and_v(pk_k(@1/**),and_v(pk_k(@2/**),pk_k(@3/**))))', [
`[${derivationPath.replace('m/', `${masterFingerPrint}/`)}]${extendedPublicKey}`,
`[${derivationPath.replace('m/', `${types_1.MagicCode.BIP322_MESSAGE_FP}/`)}]${(0, _1.formatKey)(_formatMessage(address, addressResult.prefix), isTestnet)}`,
`[${derivationPath.replace('m/', `${types_1.MagicCode.BIP322_TAP_PUBKEY_FP}/`)}]${(0, _1.formatKey)(taprootScript.slice(2), isTestnet)}`,
`[${derivationPath.replace('m/', `${types_1.MagicCode.BIP322_HASH_FP}/`)}]${formattedHash}`,
]);
return createMessageSignature(app, accountPolicy, OriginalMessage, taprootScript, {
tapBip32Derivation: [inputDerivation],
tapInternalKey: internalPubkey,
}, false);
}
exports.createTaprootBip322Signature = createTaprootBip322Signature;
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