348 lines
16 KiB
HTML
348 lines
16 KiB
HTML
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<title>JSDoc: Source: worker/async_proxy.js</title>
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<h1 class="page-title">Source: worker/async_proxy.js</h1>
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<section>
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<article>
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<pre class="prettyprint source"><code>// GPG4Browsers - An OpenPGP implementation in javascript
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// Copyright (C) 2011 Recurity Labs GmbH
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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/**
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* @requires crypto
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* @requires enums
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* @requires packet
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* @requires type_keyid
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* @requires key
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* @module async_proxy
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*/
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var crypto = require('../crypto'),
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packet = require('../packet'),
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key = require('../key.js'),
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type_keyid = require('../type/keyid.js'),
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enums = require('../enums.js');
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var INITIAL_RANDOM_SEED = 50000, // random bytes seeded to worker
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RANDOM_SEED_REQUEST = 20000; // random bytes seeded after worker request
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/**
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* Initializes a new proxy and loads the web worker
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* @constructor
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* @param {String} path The path to the worker or 'openpgp.worker.js' by default
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*/
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function AsyncProxy(path) {
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this.worker = new Worker(path || 'openpgp.worker.js');
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this.worker.onmessage = this.onMessage.bind(this);
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this.seedRandom(INITIAL_RANDOM_SEED);
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// FIFO
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this.tasks = [];
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}
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/**
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* Message handling
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*/
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AsyncProxy.prototype.onMessage = function(event) {
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var msg = event.data;
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switch (msg.event) {
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case 'method-return':
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this.tasks.shift()(msg.err ? new Error(msg.err) : null, msg.data);
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break;
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case 'request-seed':
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this.seedRandom(RANDOM_SEED_REQUEST);
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break;
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default:
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throw new Error('Unknown Worker Event.');
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}
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};
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/**
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* Send message to worker with random data
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* @param {Integer} size Number of bytes to send
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*/
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AsyncProxy.prototype.seedRandom = function(size) {
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var buf = this.getRandomBuffer(size);
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this.worker.postMessage({event: 'seed-random', buf: buf});
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};
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/**
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* Get Uint8Array with random numbers
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* @param {Integer} size Length of buffer
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* @return {Uint8Array}
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*/
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AsyncProxy.prototype.getRandomBuffer = function(size) {
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if (!size) return null;
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var buf = new Uint8Array(size);
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crypto.random.getRandomValues(buf);
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return buf;
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};
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/**
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* Terminates the worker
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*/
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AsyncProxy.prototype.terminate = function() {
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this.worker.terminate();
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};
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/**
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* Encrypts message text with keys
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* @param {Array<module:key~Key>} keys array of keys, used to encrypt the message
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* @param {String} text message as native JavaScript string
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* @param {Function} callback receives encrypted ASCII armored message
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*/
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AsyncProxy.prototype.encryptMessage = function(keys, text, callback) {
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keys = keys.map(function(key) {
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return key.toPacketlist();
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});
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this.worker.postMessage({
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event: 'encrypt-message',
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keys: keys,
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text: text
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});
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this.tasks.push(callback);
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};
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/**
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* Signs message text and encrypts it
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* @param {Array<module:key~Key>} publicKeys array of keys, used to encrypt the message
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* @param {module:key~Key} privateKey private key with decrypted secret key data for signing
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* @param {String} text message as native JavaScript string
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* @param {Function} callback receives encrypted ASCII armored message
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*/
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AsyncProxy.prototype.signAndEncryptMessage = function(publicKeys, privateKey, text, callback) {
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publicKeys = publicKeys.map(function(key) {
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return key.toPacketlist();
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});
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privateKey = privateKey.toPacketlist();
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this.worker.postMessage({
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event: 'sign-and-encrypt-message',
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publicKeys: publicKeys,
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privateKey: privateKey,
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text: text
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});
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this.tasks.push(callback);
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};
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/**
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* Decrypts message
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* @param {module:key~Key} privateKey private key with decrypted secret key data
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* @param {module:message~Message} message the message object with the encrypted data
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* @param {Function} callback receives decrypted message as as native JavaScript string
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* or null if no literal data found
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*/
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AsyncProxy.prototype.decryptMessage = function(privateKey, message, callback) {
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privateKey = privateKey.toPacketlist();
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this.worker.postMessage({
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event: 'decrypt-message',
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privateKey: privateKey,
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message: message
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});
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this.tasks.push(callback);
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};
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/**
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* Decrypts message and verifies signatures
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* @param {module:key~Key} privateKey private key with decrypted secret key data
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* @param {Array<module:key~Key>} publicKeys public keys to verify signatures
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* @param {module:message~Message} message the message object with signed and encrypted data
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* @param {Function} callback receives decrypted message as as native JavaScript string
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* with verified signatures or null if no literal data found
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*/
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AsyncProxy.prototype.decryptAndVerifyMessage = function(privateKey, publicKeys, message, callback) {
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privateKey = privateKey.toPacketlist();
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publicKeys = publicKeys.map(function(key) {
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return key.toPacketlist();
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});
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this.worker.postMessage({
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event: 'decrypt-and-verify-message',
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privateKey: privateKey,
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publicKeys: publicKeys,
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message: message
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});
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this.tasks.push(function(err, data) {
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if (data) {
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data.signatures = data.signatures.map(function(sig) {
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sig.keyid = type_keyid.fromClone(sig.keyid);
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return sig;
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});
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}
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callback(err, data);
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});
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};
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/**
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* Signs a cleartext message
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* @param {Array<module:key~Key>} privateKeys private key with decrypted secret key data to sign cleartext
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* @param {String} text cleartext
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* @param {Function} callback receives ASCII armored message
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*/
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AsyncProxy.prototype.signClearMessage = function(privateKeys, text, callback) {
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privateKeys = privateKeys.map(function(key) {
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return key.toPacketlist();
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});
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this.worker.postMessage({
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event: 'sign-clear-message',
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privateKeys: privateKeys,
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text: text
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});
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this.tasks.push(callback);
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};
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/**
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* Verifies signatures of cleartext signed message
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* @param {Array<module:key~Key>} publicKeys public keys to verify signatures
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* @param {module:cleartext~CleartextMessage} message cleartext message object with signatures
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* @param {Function} callback receives cleartext with status of verified signatures
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*/
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AsyncProxy.prototype.verifyClearSignedMessage = function(publicKeys, message, callback) {
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publicKeys = publicKeys.map(function(key) {
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return key.toPacketlist();
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});
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this.worker.postMessage({
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event: 'verify-clear-signed-message',
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publicKeys: publicKeys,
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message: message
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});
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this.tasks.push(function(err, data) {
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if (data) {
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data.signatures = data.signatures.map(function(sig) {
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sig.keyid = type_keyid.fromClone(sig.keyid);
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return sig;
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});
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}
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callback(err, data);
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});
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};
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/**
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* Generates a new OpenPGP key pair. Currently only supports RSA keys.
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* Primary and subkey will be of same type.
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* @param {module:enums.publicKey} keyType to indicate what type of key to make.
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* RSA is 1. See {@link http://tools.ietf.org/html/rfc4880#section-9.1}
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* @param {Integer} numBits number of bits for the key creation. (should be 1024+, generally)
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* @param {String} userId assumes already in form of "User Name <username@email.com>"
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* @param {String} passphrase The passphrase used to encrypt the resulting private key
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* @param {Function} callback receives object with key and public and private armored texts
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*/
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AsyncProxy.prototype.generateKeyPair = function(keyType, numBits, userId, passphrase, callback) {
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this.worker.postMessage({
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event: 'generate-key-pair',
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keyType: keyType,
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numBits: numBits,
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userId: userId,
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passphrase: passphrase
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});
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this.tasks.push(function(err, data) {
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if (data) {
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var packetlist = packet.List.fromStructuredClone(data.key);
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data.key = new key.Key(packetlist);
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}
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callback(err, data);
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});
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};
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/**
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* Decrypts secret part of all secret key packets of key.
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* @param {module:key~Key} privateKey private key with encrypted secret key data
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* @param {String} password password to unlock the key
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* @param {Function} callback receives decrypted key
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*/
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AsyncProxy.prototype.decryptKey = function(privateKey, password, callback) {
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privateKey = privateKey.toPacketlist();
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this.worker.postMessage({
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event: 'decrypt-key',
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privateKey: privateKey,
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password: password
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});
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this.tasks.push(function(err, data) {
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if (data) {
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var packetlist = packet.List.fromStructuredClone(data);
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data = new key.Key(packetlist);
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}
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callback(err, data);
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});
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};
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/**
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* Decrypts secret part of key packets matching array of keyids.
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* @param {module:key~Key} privateKey private key with encrypted secret key data
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* @param {Array<module:type/keyid>} keyIds
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* @param {String} password password to unlock the key
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* @param {Function} callback receives decrypted key
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*/
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AsyncProxy.prototype.decryptKeyPacket = function(privateKey, keyIds, password, callback) {
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privateKey = privateKey.toPacketlist();
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this.worker.postMessage({
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event: 'decrypt-key-packet',
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privateKey: privateKey,
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keyIds: keyIds,
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password: password
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});
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this.tasks.push(function(err, data) {
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if (data) {
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var packetlist = packet.List.fromStructuredClone(data);
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data = new key.Key(packetlist);
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}
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callback(err, data);
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});
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};
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module.exports = AsyncProxy;
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</code></pre>
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</article>
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</section>
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</div>
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<nav>
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<h2><a href="index.html">Index</a></h2><h3>Modules</h3><ul><li><a href="module-async_proxy.html">async_proxy</a></li><li><a href="module-cleartext.html">cleartext</a></li><li><a href="module-config.html">config</a></li><li><a href="config.html">config/config</a></li><li><a href="localStorage.html">config/localStorage</a></li><li><a href="module-crypto.html">crypto</a></li><li><a href="cfb.html">crypto/cfb</a></li><li><a href="cipher.html">crypto/cipher</a></li><li><a href="aes.html">crypto/cipher/aes</a></li><li><a href="blowfish.html">crypto/cipher/blowfish</a></li><li><a href="cast5.html">crypto/cipher/cast5</a></li><li><a href="des.html">crypto/cipher/des</a></li><li><a href="twofish.html">crypto/cipher/twofish</a></li><li><a href="crypto.html">crypto/crypto</a></li><li><a href="hash.html">crypto/hash</a></li><li><a href="md5.html">crypto/hash/md5</a></li><li><a href="ripe-md.html">crypto/hash/ripe-md</a></li><li><a href="sha.html">crypto/hash/sha</a></li><li><a href="pkcs1.html">crypto/pkcs1</a></li><li><a href="public_key.html">crypto/public_key</a></li><li><a href="dsa.html">crypto/public_key/dsa</a></li><li><a href="elgamal.html">crypto/public_key/elgamal</a></li><li><a href="jsbn.html">crypto/public_key/jsbn</a></li><li><a href="rsa.html">crypto/public_key/rsa</a></li><li><a href="random.html">crypto/random</a></li><li><a href="signature.html">crypto/signature</a></li><li><a href="armor.html">encoding/armor</a></li><li><a href="base64.html">encoding/base64</a></li><li><a href="module-enums.html">enums</a></li><li><a href="module-key.html">key</a></li><li><a href="module-keyring.html">keyring</a></li><li><a href="keyring.html">keyring/keyring</a></li><li><a href="localstore.html">keyring/localstore</a></li><li><a href="module-message.html">message</a></li><li><a href="module-openpgp.html">openpgp</a></li><li><a href="module-packet.html">packet</a></li><li><a href="compressed.html">packet/compressed</a></li><li><a href="literal.html">packet/literal</a></li><li><a href="marker.html">packet/marker</a></li><li><a href="one_pass_signature.html">packet/one_pass_signature</a></li><li><a href="packet.html">packet/packet</a></li><li><a href="packetlist.html">packet/packetlist</a></li><li><a href="public_key_.html">packet/public_key</a></li><li><a href="public_key_encrypted_session_key.html">packet/public_key_encrypted_session_key</a></li><li><a href="public_subkey.html">packet/public_subkey</a></li><li><a href="secret_key.html">packet/secret_key</a></li><li><a href="secret_subkey.html">packet/secret_subkey</a></li><li><a href="signature_.html">packet/signature</a></li><li><a href="sym_encrypted_integrity_protected.html">packet/sym_encrypted_integrity_protected</a></li><li><a href="sym_encrypted_session_key.html">packet/sym_encrypted_session_key</a></li><li><a href="symmetrically_encrypted.html">packet/symmetrically_encrypted</a></li><li><a href="trust.html">packet/trust</a></li><li><a href="user_attribute.html">packet/user_attribute</a></li><li><a href="userid.html">packet/userid</a></li><li><a href="keyid.html">type/keyid</a></li><li><a href="mpi.html">type/mpi</a></li><li><a href="s2k.html">type/s2k</a></li><li><a href="module-util.html">util</a></li></ul><h3>Classes</h3><ul><li><a href="JXG.Util.html">JXG.Util</a></li><li><a href="module-async_proxy-AsyncProxy.html">async_proxy~AsyncProxy</a></li><li><a href="module-cleartext-CleartextMessage.html">cleartext~CleartextMessage</a></li><li><a href="localStorage-LocalStorage.html">config/localStorage~LocalStorage</a></li><li><a href="keyring-Keyring.html">keyring/keyring~Keyring</a></li><li><a href="module-key-Key.html">key~Key</a></li><li><a href="module-key-SubKey.html">key~SubKey</a></li><li><a href="module-key-User.html">key~User</a></li><li><a href="module-message-Message.html">message~Message</a></li><li><a href="compressed-Compressed.html">packet/compressed~Compressed</a></li><li><a href="literal-Literal.html">packet/literal~Literal</a></li><li><a href="marker-Marker.html">packet/marker~Marker</a></li><li><a href="one_pass_signature-OnePassSignature.html">packet/one_pass_signature~OnePassSignature</a></li><li><a href="packetlist-Packetlist.html">packet/packetlist~Packetlist</a></li><li><a href="public_key_encrypted_session_key-PublicKeyEncryptedSessionKey.html">packet/public_key_encrypted_session_key~PublicKeyEncryptedSessionKey</a></li><li><a href="public_key-PublicKey.html">packet/public_key~PublicKey</a></li><li><a href="public_subkey-PublicSubkey.html">packet/public_subkey~PublicSubkey</a></li><li><a href="secret_key-SecretKey.html">packet/secret_key~SecretKey</a></li><li><a href="secret_subkey-SecretSubkey.html">packet/secret_subkey~SecretSubkey</a></li><li><a href="signature-Signature.html">packet/signature~Signature</a></li><li><a href="sym_encrypted_integrity_protected-SymEncryptedIntegrityProtected.html">packet/sym_encrypted_integrity_protected~SymEncryptedIntegrityProtected</a></li><li><a href="sym_encrypted_session_key-SymEncryptedSessionKey.html">packet/sym_encrypted_session_key~SymEncryptedSessionKey</a></li><li><a href="symmetrically_encrypted-SymmetricallyEncrypted.html">packet/symmetrically_encrypted~SymmetricallyEncrypted</a></li><li><a href="trust-Trust.html">packet/trust~Trust</a></li><li><a href="user_attribute-UserAttribute.html">packet/user_attribute~UserAttribute</a></li><li><a href="userid-Userid.html">packet/userid~Userid</a></li><li><a href="keyid-Keyid.html">type/keyid~Keyid</a></li><li><a href="mpi-MPI.html">type/mpi~MPI</a></li><li><a href="s2k-S2K.html">type/s2k~S2K</a></li></ul>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.2.2</a> on Wed Feb 12 2014 15:09:01 GMT+0100 (MEZ)
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