@bitgo-beta/utxo-lib
Version:
Client-side Bitcoin JavaScript library
41 lines • 8.63 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.verifySignatureWithUnspent = exports.signInputWithUnspent = exports.isWalletUnspent = void 0;
const outputScripts_1 = require("../outputScripts");
const address_1 = require("../../address");
const signature_1 = require("../signature");
const Unspent_1 = require("../Unspent");
function isWalletUnspent(u) {
return u.chain !== undefined;
}
exports.isWalletUnspent = isWalletUnspent;
function signInputWithUnspent(txBuilder, inputIndex, unspent, unspentSigner) {
const { walletKeys, signer, cosigner } = unspentSigner.deriveForChainAndIndex(unspent.chain, unspent.index);
const scriptType = outputScripts_1.scriptTypeForChain(unspent.chain);
const pubScript = outputScripts_1.createOutputScript2of3(walletKeys.publicKeys, scriptType).scriptPubKey;
const pubScriptExpected = address_1.toOutputScript(unspent.address, txBuilder.network);
if (!pubScript.equals(pubScriptExpected)) {
throw new Error(`pubscript mismatch: expected ${pubScriptExpected.toString('hex')} got ${pubScript.toString('hex')}`);
}
signature_1.signInput2Of3(txBuilder, inputIndex, scriptType, walletKeys.publicKeys, signer, cosigner.publicKey, unspent.value);
}
exports.signInputWithUnspent = signInputWithUnspent;
/**
* @param tx
* @param inputIndex
* @param unspents
* @param walletKeys
* @return triple of booleans indicating a valid signature for each pubkey
*/
function verifySignatureWithUnspent(tx, inputIndex, unspents, walletKeys) {
if (tx.ins.length !== unspents.length) {
throw new Error(`input length must match unspents length`);
}
const unspent = unspents[inputIndex];
if (!isWalletUnspent(unspent)) {
return [false, false, false];
}
return signature_1.verifySignatureWithPublicKeys(tx, inputIndex, unspents.map((u) => Unspent_1.toOutput(u, tx.network)), walletKeys.deriveForChainAndIndex(unspent.chain, unspent.index).publicKeys);
}
exports.verifySignatureWithUnspent = verifySignatureWithUnspent;
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