pkijs
Version:
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
315 lines (263 loc) • 11.1 kB
JavaScript
;
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 _common = require("./common.js");
var _EncryptedContentInfo = require("./EncryptedContentInfo.js");
var _EncryptedContentInfo2 = _interopRequireDefault(_EncryptedContentInfo);
var _Attribute = require("./Attribute.js");
var _Attribute2 = _interopRequireDefault(_Attribute);
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 RFC5652
*/
var EncryptedData = function () {
//**********************************************************************************
/**
* Constructor for EncryptedData class
* @param {Object} [parameters={}]
* @property {Object} [schema] asn1js parsed value
*/
function EncryptedData() {
var parameters = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
_classCallCheck(this, EncryptedData);
//region Internal properties of the object
/**
* @type {number}
* @description version
*/
this.version = (0, _pvutils.getParametersValue)(parameters, "version", EncryptedData.defaultValues("version"));
/**
* @type {EncryptedContentInfo}
* @description encryptedContentInfo
*/
this.encryptedContentInfo = (0, _pvutils.getParametersValue)(parameters, "encryptedContentInfo", EncryptedData.defaultValues("encryptedContentInfo"));
if ("unprotectedAttrs" in parameters)
/**
* @type {Array.<Attribute>}
* @description unprotectedAttrs
*/
this.unprotectedAttrs = (0, _pvutils.getParametersValue)(parameters, "unprotectedAttrs", EncryptedData.defaultValues("unprotectedAttrs"));
//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(EncryptedData, [{
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, EncryptedData.schema({
names: {
version: "version",
encryptedContentInfo: {
names: {
blockName: "encryptedContentInfo"
}
},
unprotectedAttrs: "unprotectedAttrs"
}
}));
if (asn1.verified === false) throw new Error("Object's schema was not verified against input data for EncryptedData");
//endregion
//region Get internal properties from parsed schema
this.version = asn1.result.version.valueBlock.valueDec;
this.encryptedContentInfo = new _EncryptedContentInfo2.default({ schema: asn1.result.encryptedContentInfo });
if ("unprotectedAttrs" in asn1.result) this.unprotectedAttrs = Array.from(asn1.result.unprotectedAttrs, function (element) {
return new _Attribute2.default({ schema: element });
});
//endregion
}
//**********************************************************************************
/**
* Convert current object to asn1js object and set correct values
* @returns {Object} asn1js object
*/
}, {
key: "toSchema",
value: function toSchema() {
//region Create array for output sequence
var outputArray = [];
outputArray.push(new asn1js.Integer({ value: this.version }));
outputArray.push(this.encryptedContentInfo.toSchema());
if ("unprotectedAttrs" in this) {
outputArray.push(new asn1js.Constructed({
optional: true,
idBlock: {
tagClass: 3, // CONTEXT-SPECIFIC
tagNumber: 1 // [1]
},
value: Array.from(this.unprotectedAttrs, function (element) {
return element.toSchema();
})
}));
}
//endregion
//region Construct and return new ASN.1 schema for this object
return new asn1js.Sequence({
value: outputArray
});
//endregion
}
//**********************************************************************************
/**
* Convertion for the class to JSON object
* @returns {Object}
*/
}, {
key: "toJSON",
value: function toJSON() {
var _object = {
version: this.version,
encryptedContentInfo: this.encryptedContentInfo.toJSON()
};
if ("unprotectedAttrs" in this) _object.unprotectedAttrs = Array.from(this.unprotectedAttrs, function (element) {
return element.toJSON();
});
return _object;
}
//**********************************************************************************
/**
* Create a new CMS Encrypted Data content
* @param {Object} parameters Parameters neccessary for encryption
* @returns {Promise}
*/
}, {
key: "encrypt",
value: function encrypt(parameters) {
var _this = this;
//region Check for input parameters
if (parameters instanceof Object === false) return Promise.reject("Parameters must have type \"Object\"");
//endregion
//region Get cryptographic engine
var engine = (0, _common.getEngine)();
if (typeof engine === "undefined") return Promise.reject("Unable to initialize cryptographic engine");
//endregion
//region Set "contentType" parameter
parameters.contentType = "1.2.840.113549.1.7.1"; // "data"
//endregion
if ("encryptEncryptedContentInfo" in engine.subtle) {
return engine.subtle.encryptEncryptedContentInfo(parameters).then(function (result) {
_this.encryptedContentInfo = result;
});
}
return Promise.reject("No support for \"encryptEncryptedContentInfo\" in current crypto engine " + engine.name);
}
//**********************************************************************************
/**
* Create a new CMS Encrypted Data content
* @param {Object} parameters Parameters neccessary for encryption
*/
}, {
key: "decrypt",
value: function decrypt(parameters) {
//region Check for input parameters
if (parameters instanceof Object === false) return Promise.reject("Parameters must have type \"Object\"");
//endregion
//region Get cryptographic engine
var engine = (0, _common.getEngine)();
if (typeof engine === "undefined") return Promise.reject("Unable to initialize cryptographic engine");
//endregion
//region Set "encryptedContentInfo" value
parameters.encryptedContentInfo = this.encryptedContentInfo;
//endregion
if ("decryptEncryptedContentInfo" in engine.subtle) return engine.subtle.decryptEncryptedContentInfo(parameters);
return Promise.reject("No support for \"decryptEncryptedContentInfo\" in current crypto engine " + engine.name);
}
//**********************************************************************************
}], [{
key: "defaultValues",
value: function defaultValues(memberName) {
switch (memberName) {
case "version":
return 0;
case "encryptedContentInfo":
return new _EncryptedContentInfo2.default();
case "unprotectedAttrs":
return [];
default:
throw new Error("Invalid member name for EncryptedData 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 "version":
return memberValue === 0;
case "encryptedContentInfo":
return _EncryptedContentInfo2.default.compareWithDefault("contentType", memberValue.contentType) && _EncryptedContentInfo2.default.compareWithDefault("contentEncryptionAlgorithm", memberValue.contentEncryptionAlgorithm) && _EncryptedContentInfo2.default.compareWithDefault("encryptedContent", memberValue.encryptedContent);
case "unprotectedAttrs":
return memberValue.length === 0;
default:
throw new Error("Invalid member name for EncryptedData 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] : {};
//id-encryptedData OBJECT IDENTIFIER ::= { iso(1) member-body(2)
// us(840) rsadsi(113549) pkcs(1) pkcs7(7) 6 }
//EncryptedData ::= SEQUENCE {
// version CMSVersion,
// encryptedContentInfo EncryptedContentInfo,
// unprotectedAttrs [1] IMPLICIT UnprotectedAttributes OPTIONAL }
/**
* @type {Object}
* @property {string} [blockName]
* @property {string} [version]
* @property {string} [encryptedContentInfo]
* @property {string} [unprotectedAttrs]
*/
var names = (0, _pvutils.getParametersValue)(parameters, "names", {});
return new asn1js.Sequence({
name: names.blockName || "",
value: [new asn1js.Integer({ name: names.version || "" }), _EncryptedContentInfo2.default.schema(names.encryptedContentInfo || {}), new asn1js.Constructed({
optional: true,
idBlock: {
tagClass: 3, // CONTEXT-SPECIFIC
tagNumber: 1 // [1]
},
value: [new asn1js.Repeated({
name: names.unprotectedAttrs || "",
value: _Attribute2.default.schema()
})]
})]
});
}
}]);
return EncryptedData;
}();
//**************************************************************************************
exports.default = EncryptedData;
//# sourceMappingURL=EncryptedData.js.map