pkijs/build/RSAPublicKey.js

Public Key Infrastructure (PKI) is the basis of how identity and key management is performed on the web today. PKIjs is a pure JavaScript library implementing the formats that are used in PKI applications. It is built on WebCrypto and aspires to make it p

"use strict";

Object.defineProperty(exports, "__esModule", {
	value: true
});

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 _asn1js = require("asn1js");

var asn1js = _interopRequireWildcard(_asn1js);

var _pvutils = require("pvutils");

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

//**************************************************************************************
/**
 * Class from RFC3447
 */
var RSAPublicKey = function () {
	//**********************************************************************************
	/**
  * Constructor for RSAPublicKey class
  * @param {Object} [parameters={}]
  * @property {Object} [schema] asn1js parsed value
  * @property {Integer} [modulus]
  * @property {Integer} [publicExponent]
  */
	function RSAPublicKey() {
		var parameters = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

		_classCallCheck(this, RSAPublicKey);

		//region Internal properties of the object
		/**
   * @type {Integer}
   * @description Modulus part of RSA public key
   */
		this.modulus = (0, _pvutils.getParametersValue)(parameters, "modulus", RSAPublicKey.defaultValues("modulus"));
		/**
   * @type {Integer}
   * @description Public exponent of RSA public key
   */
		this.publicExponent = (0, _pvutils.getParametersValue)(parameters, "publicExponent", RSAPublicKey.defaultValues("publicExponent"));
		//endregion

		//region If input argument array contains "schema" for this object
		if ("schema" in parameters) this.fromSchema(parameters.schema);
		//endregion
		//region If input argument array contains "json" for this object
		if ("json" in parameters) this.fromJSON(parameters.json);
		//endregion
	}
	//**********************************************************************************
	/**
  * Return default values for all class members
  * @param {string} memberName String name for a class member
  */


	_createClass(RSAPublicKey, [{
		key: "fromSchema",

		//**********************************************************************************
		/**
   * Convert parsed asn1js object into current class
   * @param {!Object} schema
   */
		value: function fromSchema(schema) {
			//region Check the schema is valid
			var asn1 = asn1js.compareSchema(schema, schema, RSAPublicKey.schema({
				names: {
					modulus: "modulus",
					publicExponent: "publicExponent"
				}
			}));

			if (asn1.verified === false) throw new Error("Object's schema was not verified against input data for RSAPublicKey");
			//endregion

			//region Get internal properties from parsed schema
			this.modulus = asn1.result.modulus.convertFromDER(256);
			this.publicExponent = asn1.result.publicExponent;
			//endregion
		}
		//**********************************************************************************
		/**
   * Convert current object to asn1js object and set correct values
   * @returns {Object} asn1js object
   */

	}, {
		key: "toSchema",
		value: function toSchema() {
			//region Construct and return new ASN.1 schema for this object
			return new asn1js.Sequence({
				value: [this.modulus.convertToDER(), this.publicExponent]
			});
			//endregion
		}
		//**********************************************************************************
		/**
   * Convertion for the class to JSON object
   * @returns {Object}
   */

	}, {
		key: "toJSON",
		value: function toJSON() {
			return {
				n: (0, _pvutils.toBase64)((0, _pvutils.arrayBufferToString)(this.modulus.valueBlock.valueHex), true, true, true),
				e: (0, _pvutils.toBase64)((0, _pvutils.arrayBufferToString)(this.publicExponent.valueBlock.valueHex), true, true, true)
			};
		}
		//**********************************************************************************
		/**
   * Convert JSON value into current object
   * @param {Object} json
   */

	}, {
		key: "fromJSON",
		value: function fromJSON(json) {
			if ("n" in json) {
				var array = (0, _pvutils.stringToArrayBuffer)((0, _pvutils.fromBase64)(json.n, true));
				this.modulus = new asn1js.Integer({ valueHex: array.slice(0, Math.pow(2, (0, _pvutils.nearestPowerOf2)(array.byteLength))) });
			} else throw new Error("Absent mandatory parameter \"n\"");

			if ("e" in json) this.publicExponent = new asn1js.Integer({ valueHex: (0, _pvutils.stringToArrayBuffer)((0, _pvutils.fromBase64)(json.e, true)).slice(0, 3) });else throw new Error("Absent mandatory parameter \"e\"");
		}
		//**********************************************************************************

	}], [{
		key: "defaultValues",
		value: function defaultValues(memberName) {
			switch (memberName) {
				case "modulus":
					return new asn1js.Integer();
				case "publicExponent":
					return new asn1js.Integer();
				default:
					throw new Error("Invalid member name for RSAPublicKey class: " + memberName);
			}
		}
		//**********************************************************************************
		/**
   * Return value of asn1js schema for current class
   * @param {Object} parameters Input parameters for the schema
   * @returns {Object} asn1js schema object
   */

	}, {
		key: "schema",
		value: function schema() {
			var parameters = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

			//RSAPublicKey ::= Sequence {
			//    modulus           Integer,  -- n
			//    publicExponent    Integer   -- e
			//}

			/**
    * @type {Object}
    * @property {string} utcTimeName Name for "utcTimeName" choice
    * @property {string} generalTimeName Name for "generalTimeName" choice
    */
			var names = (0, _pvutils.getParametersValue)(parameters, "names", {});

			return new asn1js.Sequence({
				name: names.blockName || "",
				value: [new asn1js.Integer({ name: names.modulus || "" }), new asn1js.Integer({ name: names.publicExponent || "" })]
			});
		}
	}]);

	return RSAPublicKey;
}();
//**************************************************************************************


exports.default = RSAPublicKey;
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