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
297 lines (248 loc) • 10.7 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 _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 RFC5652
*/
var EncryptedContentInfo = function () {
//**********************************************************************************
/**
* Constructor for EncryptedContentInfo class
* @param {Object} [parameters={}]
* @property {Object} [schema] asn1js parsed value
*/
function EncryptedContentInfo() {
var parameters = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
_classCallCheck(this, EncryptedContentInfo);
//region Internal properties of the object
/**
* @type {string}
* @description contentType
*/
this.contentType = (0, _pvutils.getParametersValue)(parameters, "contentType", EncryptedContentInfo.defaultValues("contentType"));
/**
* @type {AlgorithmIdentifier}
* @description contentEncryptionAlgorithm
*/
this.contentEncryptionAlgorithm = (0, _pvutils.getParametersValue)(parameters, "contentEncryptionAlgorithm", EncryptedContentInfo.defaultValues("contentEncryptionAlgorithm"));
if ("encryptedContent" in parameters) {
/**
* @type {OctetString}
* @description encryptedContent (!!!) could be contructive or primitive value (!!!)
*/
this.encryptedContent = parameters.encryptedContent;
if (this.encryptedContent.idBlock.tagClass === 1 && this.encryptedContent.idBlock.tagNumber === 4) {
//region Divide OCTETSTRING value down to small pieces
if (this.encryptedContent.idBlock.isConstructed === false) {
var constrString = new asn1js.OctetString({
idBlock: { isConstructed: true },
isConstructed: true
});
var offset = 0;
var length = this.encryptedContent.valueBlock.valueHex.byteLength;
while (length > 0) {
var pieceView = new Uint8Array(this.encryptedContent.valueBlock.valueHex, offset, offset + 1024 > this.encryptedContent.valueBlock.valueHex.byteLength ? this.encryptedContent.valueBlock.valueHex.byteLength - offset : 1024);
var _array = new ArrayBuffer(pieceView.length);
var _view = new Uint8Array(_array);
for (var i = 0; i < _view.length; i++) {
_view[i] = pieceView[i];
}constrString.valueBlock.value.push(new asn1js.OctetString({ valueHex: _array }));
length -= pieceView.length;
offset += pieceView.length;
}
this.encryptedContent = constrString;
}
//endregion
}
}
//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(EncryptedContentInfo, [{
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, EncryptedContentInfo.schema({
names: {
contentType: "contentType",
contentEncryptionAlgorithm: {
names: {
blockName: "contentEncryptionAlgorithm"
}
},
encryptedContent: "encryptedContent"
}
}));
if (asn1.verified === false) throw new Error("Object's schema was not verified against input data for EncryptedContentInfo");
//endregion
//region Get internal properties from parsed schema
this.contentType = asn1.result.contentType.valueBlock.toString();
this.contentEncryptionAlgorithm = new _AlgorithmIdentifier2.default({ schema: asn1.result.contentEncryptionAlgorithm });
if ("encryptedContent" in asn1.result) {
this.encryptedContent = asn1.result.encryptedContent;
this.encryptedContent.idBlock.tagClass = 1; // UNIVERSAL
this.encryptedContent.idBlock.tagNumber = 4; // OCTETSTRING (!!!) The value still has instance of "in_window.org.pkijs.asn1.ASN1_CONSTRUCTED / ASN1_PRIMITIVE"
}
//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 sequenceLengthBlock = {
isIndefiniteForm: false
};
var outputArray = [];
outputArray.push(new asn1js.ObjectIdentifier({ value: this.contentType }));
outputArray.push(this.contentEncryptionAlgorithm.toSchema());
if ("encryptedContent" in this) {
sequenceLengthBlock.isIndefiniteForm = this.encryptedContent.idBlock.isConstructed;
var encryptedValue = this.encryptedContent;
encryptedValue.idBlock.tagClass = 3; // CONTEXT-SPECIFIC
encryptedValue.idBlock.tagNumber = 0; // [0]
encryptedValue.lenBlock.isIndefiniteForm = this.encryptedContent.idBlock.isConstructed;
outputArray.push(encryptedValue);
}
//endregion
//region Construct and return new ASN.1 schema for this object
return new asn1js.Sequence({
lenBlock: sequenceLengthBlock,
value: outputArray
});
//endregion
}
//**********************************************************************************
/**
* Convertion for the class to JSON object
* @returns {Object}
*/
}, {
key: "toJSON",
value: function toJSON() {
var _object = {
contentType: this.contentType,
contentEncryptionAlgorithm: this.contentEncryptionAlgorithm.toJSON()
};
if ("encryptedContent" in this) _object.encryptedContent = this.encryptedContent.toJSON();
return _object;
}
//**********************************************************************************
}], [{
key: "defaultValues",
value: function defaultValues(memberName) {
switch (memberName) {
case "contentType":
return "";
case "contentEncryptionAlgorithm":
return new _AlgorithmIdentifier2.default();
case "encryptedContent":
return new asn1js.OctetString();
default:
throw new Error("Invalid member name for EncryptedContentInfo 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 "contentType":
return memberValue === "";
case "contentEncryptionAlgorithm":
return memberValue.algorithmId === "" && "algorithmParams" in memberValue === false;
case "encryptedContent":
return memberValue.isEqual(EncryptedContentInfo.defaultValues(memberName));
default:
throw new Error("Invalid member name for EncryptedContentInfo 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] : {};
//EncryptedContentInfo ::= SEQUENCE {
// contentType ContentType,
// contentEncryptionAlgorithm ContentEncryptionAlgorithmIdentifier,
// encryptedContent [0] IMPLICIT EncryptedContent OPTIONAL }
//
// Comment: Strange, but modern crypto engines create "encryptedContent" as "[0] EXPLICIT EncryptedContent"
//
//EncryptedContent ::= OCTET STRING
/**
* @type {Object}
* @property {string} [blockName]
* @property {string} [contentType]
* @property {string} [contentEncryptionAlgorithm]
* @property {string} [encryptedContent]
*/
var names = (0, _pvutils.getParametersValue)(parameters, "names", {});
return new asn1js.Sequence({
name: names.blockName || "",
value: [new asn1js.ObjectIdentifier({ name: names.contentType || "" }), _AlgorithmIdentifier2.default.schema(names.contentEncryptionAlgorithm || {}),
// The CHOICE we need because "EncryptedContent" could have either "constructive"
// or "primitive" form of encoding and we need to handle both variants
new asn1js.Choice({
value: [new asn1js.Constructed({
name: names.encryptedContent || "",
idBlock: {
tagClass: 3, // CONTEXT-SPECIFIC
tagNumber: 0 // [0]
},
value: [new asn1js.Repeated({
value: new asn1js.OctetString()
})]
}), new asn1js.Primitive({
name: names.encryptedContent || "",
idBlock: {
tagClass: 3, // CONTEXT-SPECIFIC
tagNumber: 0 // [0]
}
})]
})]
});
}
}]);
return EncryptedContentInfo;
}();
//**************************************************************************************
exports.default = EncryptedContentInfo;
//# sourceMappingURL=EncryptedContentInfo.js.map