241 lines
11 KiB
HTML
241 lines
11 KiB
HTML
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<title>JSDoc: Source: keyring/keyring.js</title>
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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
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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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* The class that deals with storage of the keyring. Currently the only option is to use HTML5 local storage.
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* @requires openpgp
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* @module keyring/keyring
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*/
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var openpgp = require('openpgp');
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/**
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* Callback to check if a key matches the input
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* @callback module:keyring/keyring.checkCallback
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* @param {String} input input to search for
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* @param {module:key~Key} key The key to be checked.
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* @return {Boolean} True if the input matches the specified key
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*/
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/**
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* Initialization routine for the keyring. This method reads the
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* keyring from HTML5 local storage and initializes this instance.
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* @constructor
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* @param {class} [storeHandler] class implementing load() and store() methods
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*/
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module.exports = function(storeHandler) {
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if (!storeHandler) {
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storeHandler = new (require('./localstore.js'))();
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}
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this.storeHandler = storeHandler;
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this.keys = this.storeHandler.load();
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/**
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* Calls the storeHandler to save the keys
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*/
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this.store = function () {
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this.storeHandler.store(this.keys);
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};
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/**
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* Clear the keyring - erase all the keys
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*/
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this.clear = function() {
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this.keys = [];
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};
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/**
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* Checks a key to see if it matches the specified email address
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* @param {String} email email address to search for
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* @param {module:key~Key} key The key to be checked.
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* @return {Boolean} True if the email address is defined in the specified key
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*/
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function emailCheck(email, key) {
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email = email.toLowerCase();
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var keyEmails = key.getUserIds();
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for (var i; i < keyEmails.length; i++) {
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//we need to get just the email from the userid key
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keyEmail = keyEmails[i].split('<')[1].split('>')[0].trim().toLowerCase();
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if (keyEmail == email) {
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return true;
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}
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}
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return false;
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}
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/**
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* Checks a key to see if it matches the specified keyid
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* @param {String} id hex string keyid to search for
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* @param {module:key~Key} key the key to be checked.
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* @return {Boolean} true if the email address is defined in the specified key
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* @inner
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*/
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function idCheck(id, key) {
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var keyids = key.getKeyIds();
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for (var i = 0; i < keyids.length; i++) {
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if (openpgp.util.hexstrdump(keyids[i].write()) == id) {
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return true;
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}
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}
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return false;
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}
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/**
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* searches all public keys in the keyring matching the address or address part of the user ids
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* @param {Array<module:key~Key>} keys array of keys to search
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* @param {module:keyring/keyring.checkCallback} identityFunction callback function which checks for a match
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* @param {String} identityInput input to check against
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* @param {module:enums.packet} keyType packet types of keys to check
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* @return {Array<module:key~Key>} array of keys which match
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*/
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function checkForIdentityAndKeyTypeMatch(keys, identityFunction, identityInput, keyType) {
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var results = [];
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for (var p = 0; p < keys.length; p++) {
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var key = keys[p];
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switch (keyType) {
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case openpgp.enums.packet.public_key:
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if (key.isPublic() && identityFunction(identityInput, key)) {
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results.push(key);
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}
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break;
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case openpgp.enums.packet.private_key:
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if (key.isPrivate() && identityFunction(identityInput, key)) {
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results.push(key);
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}
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break;
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}
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}
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return results;
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}
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/**
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* searches all public keys in the keyring matching the address or address part of the user ids
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* @param {String} email email address to search for
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* @return {Array<module:key~Key>} The public keys associated with provided email address.
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*/
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this.getPublicKeyForAddress = function (email) {
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return checkForIdentityAndKeyTypeMatch(this.keys, emailCheck, email, openpgp.enums.packet.public_key);
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};
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/**
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* Searches the keyring for a private key containing the specified email address
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* @param {String} email email address to search for
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* @return {Array<module:key~Key>} private keys found
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*/
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this.getPrivateKeyForAddress = function (email) {
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return checkForIdentityAndKeyTypeMatch(this.keys, emailCheck, email, openpgp.enums.packet.secret_key);
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};
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/**
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* Searches the keyring for public keys having the specified key id
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* @param {String} keyId provided as string of hex number (lowercase)
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* @return {Array<module:key~Key>} public keys found
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*/
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this.getKeysForKeyId = function (keyId) {
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return checkForIdentityAndKeyTypeMatch(this.keys, idCheck, keyId, openpgp.enums.packet.public_key);
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};
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/**
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* Imports a key from an ascii armored message
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* @param {String} armored message to read the keys/key from
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*/
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this.importKey = function (armored) {
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this.keys = this.keys.concat(openpgp.key.readArmored(armored).keys);
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return true;
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};
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/**
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* returns the armored message representation of the key at key ring index
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* @param {Integer} index the index of the key within the array
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* @return {String} armored message representing the key object
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*/
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this.exportKey = function (index) {
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return this.keys[index].armor();
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};
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/**
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* Removes a public key from the public key keyring at the specified index
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* @param {Integer} index the index of the public key within the publicKeys array
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* @return {module:key~Key} The public key object which has been removed
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*/
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this.removeKey = function (index) {
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var removed = this.keys.splice(index, 1);
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return removed;
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};
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/**
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* returns the armored message representation of the public key portion of the key at key ring index
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* @param {Integer} index the index of the key within the array
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* @return {String} armored message representing the public key object
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*/
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this.exportPublicKey = function (index) {
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return this.keys[index].toPublic().armor();
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};
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};
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</code></pre>
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</article>
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</section>
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<h2><a href="index.html">Index</a></h2><h3>Modules</h3><ul><li><a href="module-armor.html">armor</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-keyid.html">keyid</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-mpi.html">mpi</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="module-s2k.html">s2k</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><li><a href="util.html">util/util</a></li></ul><h3>Classes</h3><ul><li><a href="JXG.Util.html">Util</a></li><li><a href="module-cleartext-CleartextMessage.html">CleartextMessage</a></li><li><a href="module-key-Key.html">Key</a></li><li><a href="module-key-SubKey.html">SubKey</a></li><li><a href="module-key-User.html">User</a></li><li><a href="module-message-Message.html">Message</a></li></ul>
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