lighthouse-encryption-sdk-browser/dist/methods/recoverKey/index.js

Encryption SDK: Build your trustless, decentralized and fault resistance Application using distributed key shades with threshold cryptography

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.recoverKey = void 0;
const browser_1 = __importDefault(require("bls-eth-wasm/browser"));
const recoverKey = async (keyShards) => {
    if (!Array.isArray(keyShards) ||
        !(typeof keyShards[0].index == "string") ||
        !(typeof keyShards[0].key == "string")) {
        throw new Error("keyShards must be an array of objects containing these keys [index, key]");
    }
    try {
        const idVec = [];
        const secVec = [];
        await browser_1.default.init(browser_1.default.BLS12_381).then(() => browser_1.default.getCurveOrder());
        keyShards.map((keyShard) => {
            const sk = new browser_1.default.SecretKey();
            //convert readable string into secretKey vectors
            sk.deserializeHexStr(keyShard.key);
            secVec.push(sk);
            //convert readable string into Id vectors
            const id = new browser_1.default.Id();
            id.deserializeHexStr(keyShard.index);
            idVec.push(id);
        });
        const sec = new browser_1.default.SecretKey();
        //recover key
        sec.recover(secVec, idVec);
        const s = sec.serializeToHexStr();
        return { masterKey: s, error: null };
    }
    catch (err) {
        return { masterKey: null, error: "can't recover Key" };
    }
};
exports.recoverKey = recoverKey;