@ledgerhq/hw-app-btc/lib/getTrustedInputBIP143.js

Ledger Hardware Wallet Bitcoin Application API

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getTrustedInputBIP143 = getTrustedInputBIP143;
const sha256_1 = require("@noble/hashes/sha256");
const serializeTransaction_1 = require("./serializeTransaction");
function getTrustedInputBIP143(indexLookup, transaction, additionals = []) {
    if (!transaction) {
        throw new Error("getTrustedInputBIP143: missing tx");
    }
    const isDecred = additionals.includes("decred");
    if (isDecred) {
        throw new Error("Decred does not implement BIP143");
    }
    let hash = Buffer.from((0, sha256_1.sha256)((0, sha256_1.sha256)((0, serializeTransaction_1.serializeTransaction)(transaction, true))));
    const data = Buffer.alloc(4);
    data.writeUInt32LE(indexLookup, 0);
    const { outputs, locktime } = transaction;
    if (!outputs || !locktime) {
        throw new Error("getTrustedInputBIP143: locktime & outputs is expected");
    }
    if (!outputs[indexLookup]) {
        throw new Error("getTrustedInputBIP143: wrong index");
    }
    hash = Buffer.concat([hash, data, outputs[indexLookup].amount]);
    return hash.toString("hex");
}
//# sourceMappingURL=getTrustedInputBIP143.js.map