119 lines
3.4 KiB
JavaScript
119 lines
3.4 KiB
JavaScript
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//*******************************************************************************
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//
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// Copyright 2014 Microsoft
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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//*******************************************************************************
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/// #region JSCop/JsHint
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/* global msrcryptoUtilities */
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/// <reference path="utilities.js" />
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/// <dictionary>alg,Jwk,msrcrypto,utils</dictionary>
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/// <disable>JS3092.DeclarePropertiesBeforeUse</disable>
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/// #endregion JSCop/JsHint
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var msrcryptoJwk = (function () {
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var utils = msrcryptoUtilities;
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function stringToArray(stringData) {
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var result = [];
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for (var i = 0; i < stringData.length; i++) {
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result[i] = stringData.charCodeAt(i);
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}
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if (result[result.length - 1] === 0) {
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result.pop();
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}
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return result;
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}
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function getKeyType(keyHandle) {
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var algType = keyHandle.algorithm.name.slice(0, 3).toLowerCase();
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if (algType === "rsa") {
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return "RSA";
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}
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if (algType === "ecd") {
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return "EC";
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}
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return "oct";
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}
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function keyToJwk(keyHandle, keyData) {
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var key = {};
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key.kty = getKeyType(keyHandle);
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key.extractable = keyHandle.extractable;
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// Using .pop to determine if a property value is an array.
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if (keyData.pop) {
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key.k = utils.toBase64(keyData, true);
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} else {
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// Convert the base64Url properties to byte arrays
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for (var property in keyData) {
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if (keyData[property].pop) {
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key[property] = utils.toBase64(keyData[property], true);
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}
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}
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}
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if (keyHandle.algorithm.namedCurve) {
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key["crv"] = keyHandle.algorithm.namedCurve;
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}
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var stringData = JSON.stringify(key, null, '\t');
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return stringToArray(stringData);
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}
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// 'jwkKeyData' is an array of bytes. Each byte is a charCode for a json key string
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function jwkToKey(keyData, algorithm, propsToArray) {
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// Convert array of string data to a json string
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var jsonString = String.fromCharCode.apply(null, keyData);
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// Convert the json string to an object
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var jsonKeyObject = JSON.parse(jsonString);
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// Convert the base64url encoded properties to byte arrays
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for (var i = 0; i < propsToArray.length; i += 1) {
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var propValue = jsonKeyObject[propsToArray[i]];
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if (propValue) {
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jsonKeyObject[propsToArray[i]] =
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utils.base64ToBytes(propValue);
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}
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}
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return jsonKeyObject;
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}
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return {
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keyToJwk: keyToJwk,
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jwkToKey: jwkToKey
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};
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})();
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