fork-openpgpjs/doc/keyring.js.html
2013-12-22 13:01:24 -08:00

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<h1 class="page-title">Source: keyring/keyring.js</h1>
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<pre class="prettyprint source"><code>// GPG4Browsers - An OpenPGP implementation in javascript
// Copyright (C) 2011 Recurity Labs GmbH
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
/** @module keyring/keyring */
var openpgp = require('openpgp');
/**
* @class
* @classdesc The class that deals with storage of the keyring. Currently the only option is to use HTML5 local storage.
*/
module.exports = function() {
this.keys = [];
/**
* Initialization routine for the keyring. This method reads the
* keyring from HTML5 local storage and initializes this instance.
* This method is called by openpgp.init().
*/
this.init = function (storeHandler) {
if (!storeHandler) {
var localstore = require('./localstore.js');
storeHandler = new localstore();
}
this.storeHandler = storeHandler;
this.keys = [];
this.storeHandler.init(this.keys);
}
this.store = function () {
this.storeHandler.store(this.keys);
}
function emailCheck(email, key) {
email = email.toLowerCase();
var keyEmails = key.getUserIds();
for (var i; i &lt; keyEmails.length; i++) {
//we need to get just the email from the userid key
keyEmail = keyEmails[i].split('&lt;')[1].split('>')[0].trim().toLowerCase();
if (keyEmail == email) {
return true;
}
}
return false;
}
function idCheck(id, key) {
var keyids = key.getKeyIds();
for (var i = 0; i &lt; keyids.length; i++) {
if (openpgp.util.hexstrdump(keyids[i].write()) == id) {
return true;
}
}
return false;
}
function checkForIdentityAndKeyTypeMatch(keys, identityFunction, identityInput, keyType) {
var results = [];
for (var p = 0; p &lt; keys.length; p++) {
var key = keys[p];
switch (keyType) {
case openpgp.enums.packet.public_key:
if (key.isPublic() &amp;&amp; identityFunction(identityInput, key)) {
results.push(key);
}
break;
case openpgp.enums.packet.private_key:
if (key.isPrivate() &amp;&amp; identityFunction(identityInput, key)) {
results.push(key);
}
break;
}
}
return results;
}
this.checkForIdentityAndKeyTypeMatch = checkForIdentityAndKeyTypeMatch;
/**
* searches all public keys in the keyring matching the address or address part of the user ids
* @param {String} email email address to search for
* @return {Array&lt;openpgp.key.Key>} The public keys associated with provided email address.
*/
this.getPublicKeyForAddress = function (email) {
return checkForIdentityAndKeyTypeMatch(this.keys, emailCheck, email, openpgp.enums.packet.public_key);
}
/**
* Searches the keyring for a private key containing the specified email address
* @param {String} email email address to search for
* @return {Array&lt;openpgp.key.Key>} private keys found
*/
function getPrivateKeyForAddress(email) {
return checkForIdentityAndKeyTypeMatch(this.keys, emailCheck, email, openpgp.enums.packet.secret_key);
}
this.getPrivateKeyForAddress = getPrivateKeyForAddress;
/**
* Searches the keyring for public keys having the specified key id
* @param {String} keyId provided as string of hex number (lowercase)
* @return {Array&lt;openpgp.key.Key>} public keys found
*/
function getKeysForKeyId(keyId) {
return this.checkForIdentityAndKeyTypeMatch(this.keys, idCheck, keyId, openpgp.enums.packet.public_key);
}
this.getKeysForKeyId = getKeysForKeyId;
/**
* Imports a key from an ascii armored message
* @param {String} armored message to read the keys/key from
*/
function importKey(armored) {
this.keys = this.keys.concat(openpgp.key.readArmored(armored).keys);
return true;
}
this.importKey = importKey;
/**
* returns the armored message representation of the key at key ring index
* @param {Integer} index the index of the key within the array
* @return {String} armored message representing the key object
*/
function exportKey(index) {
return this.keys[index].armor();
}
this.exportKey = exportKey;
/**
* Removes a public key from the public key keyring at the specified index
* @param {Integer} index the index of the public key within the publicKeys array
* @return {openpgp.key.Key} The public key object which has been removed
*/
function removeKey(index) {
var removed = this.keys.splice(index, 1);
return removed;
}
this.removeKey = removeKey;
/**
* returns the armored message representation of the public key portion of the key at key ring index
* @param {Integer} index the index of the key within the array
* @return {String} armored message representing the public key object
*/
function exportPublicKey(index) {
return this.keys[index].toPublic().armor();
}
this.exportPublicKey = exportPublicKey;
};
</code></pre>
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