@okxweb3/coin-bitcoin
Version:
@okxweb3/coin-bitcoin is a Bitcoin SDK for building Web3 wallets and applications. It supports BTC, BSV, DOGE, LTC, and TBTC, enabling private key management, transaction signing, address generation, and inscriptions like BRC-20, Runes, CAT, and Atomicals
53 lines • 2.06 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.canAddToArray = exports.check = exports.expected = exports.encode = exports.decode = void 0;
const typeFields_1 = require("../../typeFields");
function decode(keyVal) {
if (keyVal.key[0] !== typeFields_1.InputTypes.TAP_SCRIPT_SIG) {
throw new Error('Decode Error: could not decode tapScriptSig with key 0x' +
keyVal.key.toString('hex'));
}
if (keyVal.key.length !== 65) {
throw new Error('Decode Error: tapScriptSig has invalid key 0x' +
keyVal.key.toString('hex'));
}
if (keyVal.value.length !== 64 && keyVal.value.length !== 65) {
throw new Error('Decode Error: tapScriptSig has invalid signature in key 0x' +
keyVal.key.toString('hex'));
}
const pubkey = keyVal.key.slice(1, 33);
const leafHash = keyVal.key.slice(33);
return {
pubkey,
leafHash,
signature: keyVal.value,
};
}
exports.decode = decode;
function encode(tSig) {
const head = Buffer.from([typeFields_1.InputTypes.TAP_SCRIPT_SIG]);
return {
key: Buffer.concat([head, tSig.pubkey, tSig.leafHash]),
value: tSig.signature,
};
}
exports.encode = encode;
exports.expected = '{ pubkey: Buffer; leafHash: Buffer; signature: Buffer; }';
function check(data) {
return (Buffer.isBuffer(data.pubkey) &&
Buffer.isBuffer(data.leafHash) &&
Buffer.isBuffer(data.signature) &&
data.pubkey.length === 32 &&
data.leafHash.length === 32 &&
(data.signature.length === 64 || data.signature.length === 65));
}
exports.check = check;
function canAddToArray(array, item, dupeSet) {
const dupeString = item.pubkey.toString('hex') + item.leafHash.toString('hex');
if (dupeSet.has(dupeString))
return false;
dupeSet.add(dupeString);
return (array.filter(v => v.pubkey.equals(item.pubkey) && v.leafHash.equals(item.leafHash)).length === 0);
}
exports.canAddToArray = canAddToArray;
//# sourceMappingURL=tapScriptSig.js.map