241 lines
14 KiB
HTML
241 lines
14 KiB
HTML
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<title>JSDoc: Source: openpgp.msg.privatekey.js</title>
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<h1 class="page-title">Source: openpgp.msg.privatekey.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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* @class
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* @classdesc Class that represents a decoded private key for internal openpgp.js use
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*/
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function openpgp_msg_privatekey() {
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this.subKeys = new Array();
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this.privateKeyPacket = null;
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this.userIds = new Array();
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this.userAttributes = new Array();
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this.revocationSignatures = new Array();
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this.subKeys = new Array();
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/**
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*
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* @return last position
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*/
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function read_nodes(parent_node, input, position, len) {
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this.privateKeyPacket = parent_node;
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var pos = position;
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while (input.length > pos) {
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var result = openpgp_packet.read_packet(input, pos, input.length - pos);
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if (result == null) {
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util.print_error("openpgp.msg.messge decrypt:\n"+'[pub/priv_key]parsing ends here @:' + pos + " l:" + len);
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break;
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} else {
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switch (result.tagType) {
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case 2: // public key revocation signature
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if (result.signatureType == 32)
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this.revocationSignatures[this.revocationSignatures.length] = result;
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else if (result.signatureType > 15 && result.signatureType < 20) {
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if (this.certificationsignatures == null)
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this.certificationSignatures = new Array();
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this.certificationSignatures[this.certificationSignatures.length] = result;
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} else
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util.print_error("openpgp.msg.messge decrypt:\n"+"unknown signature type directly on key "+result.signatureType+" @"+pos);
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pos += result.packetLength + result.headerLength;
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break;
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case 7: // PrivateSubkey Packet
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this.subKeys[this.subKeys.length] = result;
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pos += result.packetLength + result.headerLength;
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pos += result.read_nodes(this.privateKeyPacket,input, pos, input.length - pos);
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break;
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case 17: // User Attribute Packet
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this.userAttributes[this.userAttributes.length] = result;
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pos += result.packetLength + result.headerLength;
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pos += result.read_nodes(this.privateKeyPacket,input, pos, input.length - pos);
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break;
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case 13: // User ID Packet
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this.userIds[this.userIds.length] = result;
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pos += result.packetLength + result.headerLength;
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pos += result.read_nodes(this.privateKeyPacket, input, pos, input.length - pos);
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break;
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default:
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this.position = position - this.privateKeyPacket.packetLength - this.privateKeyPacket.headerLength;
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this.len = pos - position;
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return this.len;
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}
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}
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}
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this.position = position - this.privateKeyPacket.packetLength - this.privateKeyPacket.headerLength;
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this.len = pos - position;
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return this.len;
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}
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function getKeyId() {
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return this.privateKeyPacket.publicKey.getKeyId();
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}
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function getSubKeyIds() {
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if (this.privateKeyPacket.publicKey.version == 4) // V3 keys MUST NOT have subkeys.
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var result = new Array();
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for (var i = 0; i < this.subKeys.length; i++) {
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result[i] = str_sha1(this.subKeys[i].publicKey.header+this.subKeys[i].publicKey.data).substring(12,20);
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}
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return result;
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}
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function getSigningKey() {
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if ((this.privateKeyPacket.publicKey.publicKeyAlgorithm == 17 ||
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this.privateKeyPacket.publicKey.publicKeyAlgorithm != 2)
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&& this.privateKeyPacket.publicKey.verifyKey() == 3)
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return this.privateKeyPacket;
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else if (this.privateKeyPacket.publicKey.version == 4) // V3 keys MUST NOT have subkeys.
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for (var j = 0; j < this.privateKeyPacket.subKeys.length; j++) {
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if ((this.privateKeyPacket.subKeys[j].publicKey.publicKeyAlgorithm == 17 ||
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this.privateKeyPacket.subKeys[j].publicKey.publicKeyAlgorithm != 2) &&
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this.privateKeyPacket.subKeys[j].publicKey.verifyKey() == 3)
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return this.privateKeyPacket.subKeys[j];
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}
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return null;
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}
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function getPreferredSignatureHashAlgorithm() {
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var pkey = this.getSigningKey();
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if (pkey == null) {
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util.print_error("private key is for encryption only! Cannot create a signature.")
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return null;
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}
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if (pkey.publicKey.publicKeyAlgorithm == 17) {
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var dsa = new DSA();
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return dsa.select_hash_algorithm(pkey.publicKey.MPIs[1].toBigInteger()); // q
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}
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return openpgp.config.config.prefer_hash_algorithm;
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}
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function decryptSecretMPIs(str_passphrase) {
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return this.privateKeyPacket.decryptSecretMPIs(str_passphrase);
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}
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function getFingerprint() {
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return this.privateKeyPacket.publicKey.getFingerprint();
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}
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// TODO need to implement this
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function revoke() {
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}
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/**
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* extracts the public key part
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* @return {String} OpenPGP armored text containing the public key
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* returns null if no sufficient data to extract public key
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*/
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function extractPublicKey() {
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// add public key
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var key = this.privateKeyPacket.publicKey.header + this.privateKeyPacket.publicKey.data;
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for (var i = 0; i < this.userIds.length; i++) {
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// verify userids
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if (this.userIds[i].certificationSignatures.length === 0) {
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util.print_error("extractPublicKey - missing certification signatures");
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return null;
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}
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var userIdPacket = new openpgp_packet_userid();
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// add userids
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key += userIdPacket.write_packet(this.userIds[i].text);
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for (var j = 0; j < this.userIds[i].certificationSignatures.length; j++) {
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var certSig = this.userIds[i].certificationSignatures[j];
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// add signatures
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key += openpgp_packet.write_packet_header(2, certSig.data.length) + certSig.data;
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}
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}
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for (var k = 0; k < this.subKeys.length; k++) {
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var pubSubKey = this.subKeys[k].publicKey;
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// add public subkey package
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key += openpgp_packet.write_old_packet_header(14, pubSubKey.data.length) + pubSubKey.data;
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var subKeySig = this.subKeys[k].subKeySignature;
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if (subKeySig !== null) {
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// add subkey signature
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key += openpgp_packet.write_packet_header(2, subKeySig.data.length) + subKeySig.data;
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} else {
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util.print_error("extractPublicKey - missing subkey signature");
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return null;
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}
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}
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var publicArmored = openpgp_encoding_armor(4, key);
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return publicArmored;
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}
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this.extractPublicKey = extractPublicKey;
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this.getSigningKey = getSigningKey;
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this.getFingerprint = getFingerprint;
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this.getPreferredSignatureHashAlgorithm = getPreferredSignatureHashAlgorithm;
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this.read_nodes = read_nodes;
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this.decryptSecretMPIs = decryptSecretMPIs;
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this.getSubKeyIds = getSubKeyIds;
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this.getKeyId = getKeyId;
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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>Classes</h3><ul><li><a href="_openpgp_packet.html">_openpgp_packet</a></li><li><a href="JXG.Util.html">Util</a></li><li><a href="openpgp.html">openpgp</a></li><li><a href="openpgp_config.html">openpgp_config</a></li><li><a href="openpgp_keyring.html">openpgp_keyring</a></li><li><a href="openpgp_msg_message.html">openpgp_msg_message</a></li><li><a href="openpgp_msg_privatekey.html">openpgp_msg_privatekey</a></li><li><a href="openpgp_msg_publickey.html">openpgp_msg_publickey</a></li><li><a href="openpgp_packet_compressed.html">openpgp_packet_compressed</a></li><li><a href="openpgp_packet_encrypteddata.html">openpgp_packet_encrypteddata</a></li><li><a href="openpgp_packet_encryptedintegrityprotecteddata.html">openpgp_packet_encryptedintegrityprotecteddata</a></li><li><a href="openpgp_packet_encryptedsessionkey.html">openpgp_packet_encryptedsessionkey</a></li><li><a href="openpgp_packet_keymaterial.html">openpgp_packet_keymaterial</a></li><li><a href="openpgp_packet_literaldata.html">openpgp_packet_literaldata</a></li><li><a href="openpgp_packet_marker.html">openpgp_packet_marker</a></li><li><a href="openpgp_packet_modificationdetectioncode.html">openpgp_packet_modificationdetectioncode</a></li><li><a href="openpgp_packet_onepasssignature.html">openpgp_packet_onepasssignature</a></li><li><a href="openpgp_packet_signature.html">openpgp_packet_signature</a></li><li><a href="openpgp_packet_userattribute.html">openpgp_packet_userattribute</a></li><li><a href="openpgp_packet_userid.html">openpgp_packet_userid</a></li><li><a href="openpgp_type_keyid.html">openpgp_type_keyid</a></li><li><a href="openpgp_type_mpi.html">openpgp_type_mpi</a></li><li><a href="openpgp_type_s2k.html">openpgp_type_s2k</a></li></ul><h3>Global</h3><ul><li><a href="global.html#bin2str">bin2str</a></li><li><a href="global.html#calc_checksum">calc_checksum</a></li><li><a href="global.html#crc_table">crc_table</a></li><li><a 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