jsotp
Version:
Javascript One-Time Password module.
141 lines (114 loc) • 6.73 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.TOTP = undefined;
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };
var _otp = require('./otp');
var _util = require('./util');
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* @module : TOTP module to generate and verify TOTP password
* @author : Gin (gin.lance.inside@hotmail.com)
*/
var TOTP = exports.TOTP = function (_OTP) {
_inherits(TOTP, _OTP);
/* ＊
* @param {secret}
* @type {String}
* @desc random base32-encoded key to generate OTP.
*
* @param {interval}
* @type {int}
* @desc the time interval in seconds for OTP.
* This defaults to 30.
*
* @return {OTP}
*/
function TOTP(secret) {
var interval = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 30;
_classCallCheck(this, TOTP);
var _this = _possibleConstructorReturn(this, (TOTP.__proto__ || Object.getPrototypeOf(TOTP)).call(this, secret));
_this.interval = interval;
return _this;
}
/* ＊
* Generate the OTP with current time.
*
* @return {OTP}
*
* @example
* ```javascript
* let totp = jsotp.TOTP('BASE32ENCODEDSECRET');
* totp.now(); // => 432143
* ```
*/
_createClass(TOTP, [{
key: 'now',
value: function now() {
// get now time string
var now = _util.Util.timecode(new Date(), this.interval);
// generate the one-time password
var digit = _get(TOTP.prototype.__proto__ || Object.getPrototypeOf(TOTP.prototype), 'generate_otp', this).call(this, now);
return digit;
}
/* ＊
* Verifies the OTP passed in against the current time OTP.
*
* @param {otp}
* @type {String}
* @desc the OTP waiting for checking
*
* @param {time}
* @type {int or datetime}
* @desc Time to check OTP at (defaults to now)
*
* @return {Boolean}
*
* @example
* ```javascript
* let totp = jsotp.TOTP('BASE32ENCODEDSECRET');
* totp.now(); // => 432143
* // Verify for current time
* totp.verify(432143); // => true
* // Verify after 30s
* totp.verify(432143); // => false
* ```
*/
}, {
key: 'verify',
value: function verify(otp) {
var time = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;
var otp_time = void 0;
if (time == null) {
time = new Date();
}
otp_time = _get(TOTP.prototype.__proto__ || Object.getPrototypeOf(TOTP.prototype), 'generate_otp', this).call(this, _util.Util.timecode(time, this.interval));
if (typeof otp === 'number') {
otp = otp.toString();
}
if (otp === otp_time) {
return true;
}
return false;
}
/* ＊
* Generate a url with TOTP instance.
*
* @param {issuer}
* @type {String}
* @desc maybe it is the Service name
*
* @return {String}
*/
}, {
key: 'url_gen',
value: function url_gen() {
var issuer = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';
return _get(TOTP.prototype.__proto__ || Object.getPrototypeOf(TOTP.prototype), 'url_gen', this).call(this, issuer, 'totp');
}
}]);
return TOTP;
}(_otp.OTP);