nkn-sdk
Version:
NKN client and wallet SDK
327 lines (326 loc) • 23.1 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = void 0;
var _webworkify = _interopRequireDefault(require("webworkify"));
var crypto = _interopRequireWildcard(require("./crypto"));
var errors = _interopRequireWildcard(require("./errors"));
var util = _interopRequireWildcard(require("./util"));
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(e) { return e ? t : r; })(e); }
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != _typeof(e) && "function" != typeof e) return { "default": e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n["default"] = e, t && t.set(e, n), n; }
function _interopRequireDefault(e) { return e && e.__esModule ? e : { "default": e }; }
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function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
var Key = exports["default"] = /*#__PURE__*/function () {
function Key(seed) {
var _this = this;
var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
_classCallCheck(this, Key);
_defineProperty(this, "seed", void 0);
_defineProperty(this, "publicKey", void 0);
_defineProperty(this, "privateKey", void 0);
_defineProperty(this, "curvePrivateKey", void 0);
_defineProperty(this, "sharedKeyCache", void 0);
_defineProperty(this, "useWorker", void 0);
_defineProperty(this, "worker", void 0);
_defineProperty(this, "workerMsgID", void 0);
_defineProperty(this, "workerMsgCache", void 0);
if (!seed) {
seed = util.randomBytesHex(crypto.seedLength);
}
var key = crypto.keyPair(seed);
this.seed = seed;
this.publicKey = util.bytesToHex(key.publicKey);
this.privateKey = key.privateKey;
this.curvePrivateKey = key.curvePrivateKey;
this.sharedKeyCache = new Map();
this.useWorker = this._shouldUseWorker(options.worker);
this.worker = null;
this.workerMsgID = 0;
this.workerMsgCache = new Map();
if (this.useWorker) {
_asyncToGenerator(/*#__PURE__*/_regeneratorRuntime().mark(function _callee() {
var Worker;
return _regeneratorRuntime().wrap(function _callee$(_context) {
while (1) switch (_context.prev = _context.next) {
case 0:
_context.prev = 0;
if (!(typeof options.worker === "function")) {
_context.next = 7;
break;
}
_context.next = 4;
return options.worker();
case 4:
_this.worker = _context.sent;
_context.next = 21;
break;
case 7:
_context.prev = 7;
_this.worker = (0, _webworkify["default"])(require("../worker/worker.js"));
_context.next = 21;
break;
case 11:
_context.prev = 11;
_context.t0 = _context["catch"](7);
_context.prev = 13;
Worker = require("../worker/webpack.worker.js");
_this.worker = new Worker();
_context.next = 21;
break;
case 18:
_context.prev = 18;
_context.t1 = _context["catch"](13);
throw "neither browserify nor webpack worker-loader is detected";
case 21:
_this.worker.onmessage = function (e) {
if (e.data.id !== undefined && _this.workerMsgCache.has(e.data.id)) {
var msgPromise = _this.workerMsgCache.get(e.data.id);
if (e.data.error) {
msgPromise.reject(e.data.error);
} else {
msgPromise.resolve(e.data.result);
}
_this.workerMsgCache["delete"](e.data.id);
}
};
_context.next = 24;
return _this._sendToWorker({
action: "setSeed",
seed: _this.seed
});
case 24:
_context.next = 30;
break;
case 26:
_context.prev = 26;
_context.t2 = _context["catch"](0);
console.warn("Launch web worker failed:", _context.t2);
_this.useWorker = false;
case 30:
case "end":
return _context.stop();
}
}, _callee, null, [[0, 26], [7, 11], [13, 18]]);
}))();
}
}
return _createClass(Key, [{
key: "_shouldUseWorker",
value: function _shouldUseWorker(useWorker) {
if (!useWorker) {
return false;
}
if (typeof window === "undefined") {
return false;
}
if (!window.Worker) {
return false;
}
return true;
}
}, {
key: "_sendToWorker",
value: function _sendToWorker(data) {
var _this2 = this;
return new Promise(function (resolve, reject) {
var id = _this2.workerMsgID;
_this2.workerMsgID++;
_this2.workerMsgCache.set(id, {
resolve: resolve,
reject: reject
});
_this2.worker.postMessage(Object.assign({
id: id
}, data));
});
}
}, {
key: "computeSharedKey",
value: function () {
var _computeSharedKey = _asyncToGenerator(/*#__PURE__*/_regeneratorRuntime().mark(function _callee2(otherPubkey) {
return _regeneratorRuntime().wrap(function _callee2$(_context2) {
while (1) switch (_context2.prev = _context2.next) {
case 0:
if (!this.useWorker) {
_context2.next = 10;
break;
}
_context2.prev = 1;
_context2.next = 4;
return this._sendToWorker({
action: "computeSharedKey",
otherPubkey: otherPubkey
});
case 4:
return _context2.abrupt("return", _context2.sent);
case 7:
_context2.prev = 7;
_context2.t0 = _context2["catch"](1);
console.warn("worker computeSharedKey failed, fallback to main thread:", _context2.t0);
case 10:
_context2.next = 12;
return crypto.computeSharedKey(this.curvePrivateKey, otherPubkey);
case 12:
return _context2.abrupt("return", _context2.sent);
case 13:
case "end":
return _context2.stop();
}
}, _callee2, this, [[1, 7]]);
}));
function computeSharedKey(_x) {
return _computeSharedKey.apply(this, arguments);
}
return computeSharedKey;
}()
}, {
key: "getOrComputeSharedKey",
value: function () {
var _getOrComputeSharedKey = _asyncToGenerator(/*#__PURE__*/_regeneratorRuntime().mark(function _callee3(otherPubkey) {
var sharedKey;
return _regeneratorRuntime().wrap(function _callee3$(_context3) {
while (1) switch (_context3.prev = _context3.next) {
case 0:
sharedKey = this.sharedKeyCache.get(otherPubkey);
if (sharedKey) {
_context3.next = 6;
break;
}
_context3.next = 4;
return this.computeSharedKey(otherPubkey);
case 4:
sharedKey = _context3.sent;
this.sharedKeyCache.set(otherPubkey, sharedKey);
case 6:
return _context3.abrupt("return", sharedKey);
case 7:
case "end":
return _context3.stop();
}
}, _callee3, this);
}));
function getOrComputeSharedKey(_x2) {
return _getOrComputeSharedKey.apply(this, arguments);
}
return getOrComputeSharedKey;
}()
}, {
key: "encrypt",
value: function () {
var _encrypt = _asyncToGenerator(/*#__PURE__*/_regeneratorRuntime().mark(function _callee4(message, destPubkey) {
var options,
sharedKey,
nonce,
_args4 = arguments;
return _regeneratorRuntime().wrap(function _callee4$(_context4) {
while (1) switch (_context4.prev = _context4.next) {
case 0:
options = _args4.length > 2 && _args4[2] !== undefined ? _args4[2] : {};
_context4.next = 3;
return this.getOrComputeSharedKey(destPubkey);
case 3:
sharedKey = _context4.sent;
sharedKey = Buffer.from(sharedKey, "hex");
nonce = options.nonce || util.randomBytes(crypto.nonceLength);
_context4.next = 8;
return crypto.encryptSymmetric(message, nonce, sharedKey);
case 8:
_context4.t0 = _context4.sent;
_context4.t1 = nonce;
return _context4.abrupt("return", {
message: _context4.t0,
nonce: _context4.t1
});
case 11:
case "end":
return _context4.stop();
}
}, _callee4, this);
}));
function encrypt(_x3, _x4) {
return _encrypt.apply(this, arguments);
}
return encrypt;
}()
}, {
key: "decrypt",
value: function () {
var _decrypt = _asyncToGenerator(/*#__PURE__*/_regeneratorRuntime().mark(function _callee5(message, nonce, srcPubkey) {
var options,
sharedKey,
_args5 = arguments;
return _regeneratorRuntime().wrap(function _callee5$(_context5) {
while (1) switch (_context5.prev = _context5.next) {
case 0:
options = _args5.length > 3 && _args5[3] !== undefined ? _args5[3] : {};
_context5.next = 3;
return this.getOrComputeSharedKey(srcPubkey);
case 3:
sharedKey = _context5.sent;
sharedKey = Buffer.from(sharedKey, "hex");
_context5.next = 7;
return crypto.decryptSymmetric(message, nonce, sharedKey);
case 7:
return _context5.abrupt("return", _context5.sent);
case 8:
case "end":
return _context5.stop();
}
}, _callee5, this);
}));
function decrypt(_x5, _x6, _x7) {
return _decrypt.apply(this, arguments);
}
return decrypt;
}()
}, {
key: "sign",
value: function () {
var _sign = _asyncToGenerator(/*#__PURE__*/_regeneratorRuntime().mark(function _callee6(message) {
return _regeneratorRuntime().wrap(function _callee6$(_context6) {
while (1) switch (_context6.prev = _context6.next) {
case 0:
if (!this.useWorker) {
_context6.next = 10;
break;
}
_context6.prev = 1;
_context6.next = 4;
return this._sendToWorker({
action: "sign",
message: message
});
case 4:
return _context6.abrupt("return", _context6.sent);
case 7:
_context6.prev = 7;
_context6.t0 = _context6["catch"](1);
console.warn("worker sign failed, fallback to main thread:", _context6.t0);
case 10:
_context6.next = 12;
return crypto.sign(this.privateKey, message);
case 12:
return _context6.abrupt("return", _context6.sent);
case 13:
case "end":
return _context6.stop();
}
}, _callee6, this, [[1, 7]]);
}));
function sign(_x8) {
return _sign.apply(this, arguments);
}
return sign;
}()
}]);
}();