pkijs/build/DigestInfo.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");

var _AlgorithmIdentifier = require("./AlgorithmIdentifier.js");

var _AlgorithmIdentifier2 = _interopRequireDefault(_AlgorithmIdentifier);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

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

		_classCallCheck(this, DigestInfo);

		//region Internal properties of the object
		/**
   * @type {AlgorithmIdentifier}
   * @description digestAlgorithm
   */
		this.digestAlgorithm = (0, _pvutils.getParametersValue)(parameters, "digestAlgorithm", DigestInfo.defaultValues("digestAlgorithm"));
		/**
   * @type {OctetString}
   * @description digest
   */
		this.digest = (0, _pvutils.getParametersValue)(parameters, "digest", DigestInfo.defaultValues("digest"));
		//endregion

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


	_createClass(DigestInfo, [{
		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, DigestInfo.schema({
				names: {
					digestAlgorithm: {
						names: {
							blockName: "digestAlgorithm"
						}
					},
					digest: "digest"
				}
			}));

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

			//region Get internal properties from parsed schema
			this.digestAlgorithm = new _AlgorithmIdentifier2.default({ schema: asn1.result.digestAlgorithm });
			this.digest = asn1.result.digest;
			//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.digestAlgorithm.toSchema(), this.digest]
			});
			//endregion
		}
		//**********************************************************************************
		/**
   * Convertion for the class to JSON object
   * @returns {Object}
   */

	}, {
		key: "toJSON",
		value: function toJSON() {
			return {
				digestAlgorithm: this.digestAlgorithm.toJSON(),
				digest: this.digest.toJSON()
			};
		}
		//**********************************************************************************

	}], [{
		key: "defaultValues",
		value: function defaultValues(memberName) {
			switch (memberName) {
				case "digestAlgorithm":
					return new _AlgorithmIdentifier2.default();
				case "digest":
					return new asn1js.OctetString();
				default:
					throw new Error("Invalid member name for DigestInfo class: " + memberName);
			}
		}
		//**********************************************************************************
		/**
   * Compare values with default values for all class members
   * @param {string} memberName String name for a class member
   * @param {*} memberValue Value to compare with default value
   */

	}, {
		key: "compareWithDefault",
		value: function compareWithDefault(memberName, memberValue) {
			switch (memberName) {
				case "digestAlgorithm":
					return _AlgorithmIdentifier2.default.compareWithDefault("algorithmId", memberValue.algorithmId) && "algorithmParams" in memberValue === false;
				case "digest":
					return memberValue.isEqual(DigestInfo.defaultValues(memberName));
				default:
					throw new Error("Invalid member name for DigestInfo 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] : {};

			//DigestInfo ::= SEQUENCE {
			//    digestAlgorithm DigestAlgorithmIdentifier,
			//    digest Digest }

			//Digest ::= OCTET STRING

			/**
    * @type {Object}
    * @property {string} [blockName]
    * @property {string} [type]
    * @property {string} [setName]
    * @property {string} [values]
    */
			var names = (0, _pvutils.getParametersValue)(parameters, "names", {});

			return new asn1js.Sequence({
				name: names.blockName || "",
				value: [_AlgorithmIdentifier2.default.schema(names.digestAlgorithm || {
					names: {
						blockName: "digestAlgorithm"
					}
				}), new asn1js.OctetString({ name: names.digest || "digest" })]
			});
		}
	}]);

	return DigestInfo;
}();
//**************************************************************************************


exports.default = DigestInfo;
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