diff --git a/lang/js/src/Key.js b/lang/js/src/Key.js
index f431a283..88c49d3f 100644
--- a/lang/js/src/Key.js
+++ b/lang/js/src/Key.js
@@ -1,608 +1,608 @@
 /* gpgme.js - Javascript integration for gpgme
  * Copyright (C) 2018 Bundesamt für Sicherheit in der Informationstechnik
  *
  * This file is part of GPGME.
  *
  * GPGME 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.
  *
  * GPGME 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 program; if not, see <http://www.gnu.org/licenses/>.
  * SPDX-License-Identifier: LGPL-2.1+
  *
  * Author(s):
  *     Maximilian Krambach <mkrambach@intevation.de>
  */
 
 import { isFingerprint, isLongId } from './Helpers';
 import { gpgme_error } from './Errors';
 import { createMessage } from './Message';
 
 /**
  * Validates the given fingerprint and creates a new {@link GPGME_Key}
  * @param {String} fingerprint
  * @param {Boolean} async If True, Key properties (except fingerprint) will be
  * queried from gnupg on each call, making the operation up-to-date, the
  * answers will be Promises, and the performance will likely suffer
  * @returns {GPGME_Key|GPGME_Error}
  */
 export function createKey(fingerprint, async = false){
     if (!isFingerprint(fingerprint) || typeof(async) !== 'boolean'){
         return gpgme_error('PARAM_WRONG');
     }
     else return Object.freeze(new GPGME_Key(fingerprint, async));
 }
 
 /**
  * Represents the Keys as stored in the gnupg backend
  * It allows to query almost all information defined in gpgme Key Objects
  * Refer to {@link validKeyProperties} for available information, and the gpgme
  * documentation on their meaning
  * (https://www.gnupg.org/documentation/manuals/gpgme/Key-objects.html)
  *
  * @class
  */
 export class GPGME_Key {
 
     constructor(fingerprint, async){
 
         /**
          * @property {Boolean} If true, most answers will be asynchronous
          */
         this.isAsync = async;
 
         let _data = {fingerprint: fingerprint};
         this.getFingerprint = function(){
             if (!_data.fingerprint || !isFingerprint(_data.fingerprint)){
                 return gpgme_error('KEY_INVALID');
             }
             return _data.fingerprint;
         };
 
         /**
          * Property indicating if the Key possesses a private/secret part. If
          * this information is not yet cached, it returns an
          * {@link GPGME_Error} with code 'KEY_NO_INIT'. Running
          * {@link refreshKey} may help in this case.
          * @returns {Boolean} If the Key has a secret subkey.
          */
         this.hasSecret= function (){
-            return this.get('hasSecret', true);
+            return this.get('hasSecret');
         };
 
         /**
          * @param {Object} data Bulk set the data for this key, with an Object
          * sent by gpgme-json.
          * @returns {GPGME_Key|GPGME_Error} Itself after values have been set,
          * an error if something went wrong.
          * @private
          */
         this.setKeyData = function (data){
             if (typeof(data) !== 'object') {
                 return gpgme_error('KEY_INVALID');
             }
             if (!data.fingerprint || data.fingerprint !== _data.fingerprint){
                 return gpgme_error('KEY_INVALID');
             }
             let keys = Object.keys(data);
             for (let i=0; i< keys.length; i++){
                 if (!validKeyProperties.hasOwnProperty(keys[i])){
                     return gpgme_error('KEY_INVALID');
                 }
                 //running the defined validation function
                 if (validKeyProperties[keys[i]](data[keys[i]]) !== true ){
                     return gpgme_error('KEY_INVALID');
                 }
                 switch (keys[i]){
                 case 'subkeys':
                     _data.subkeys = [];
                     for (let i=0; i< data.subkeys.length; i++) {
                         _data.subkeys.push(Object.freeze(
                             new GPGME_Subkey(data.subkeys[i])));
                     }
                     break;
                 case 'userids':
                     _data.userids = [];
                     for (let i=0; i< data.userids.length; i++) {
                         _data.userids.push(Object.freeze(
                             new GPGME_UserId(data.userids[i])));
                     }
                     break;
                 case 'last_update':
                     _data[keys[i]] = new Date( data[keys[i]] * 1000 );
                     break;
                 default:
                     _data[keys[i]] = data[keys[i]];
                 }
             }
             return this;
         };
 
         /**
          * Query any property of the Key listed in {@link validKeyProperties}
          * @param {String} property property to be retreived
          * @returns {*|Promise<*>} the value (Boolean, String, Array, Object).
          * If 'cached' is false, the value will be resolved as a Promise.
          */
         this.get = function(property) {
             if (this.isAsync === true) {
                 let me = this;
                 return new Promise(function(resolve, reject) {
                     if (property === 'armored'){
                         resolve(me.getArmor());
                     } else if (property === 'hasSecret'){
                         resolve(me.getHasSecret());
                     } else if (validKeyProperties.hasOwnProperty(property)){
                         let msg = createMessage('keylist');
                         msg.setParameter('keys', _data.fingerprint);
                         msg.post().then(function(result){
                             if (result.keys && result.keys.length === 1 &&
                                 result.keys[0].hasOwnProperty(property)){
                                 resolve(result.keys[0][property]);
                             } else {
                                 reject(gpgme_error('CONN_UNEXPECTED_ANSWER'));
                             }
                         }, function(error){
                             reject(gpgme_error(error));
                         });
                     } else {
                         reject(gpgme_error('PARAM_WRONG'));
                     }
                 });
             } else {
                 if (!validKeyProperties.hasOwnProperty(property)){
                     return gpgme_error('PARAM_WRONG');
                 }
                 if (!_data.hasOwnProperty(property)){
                     return gpgme_error('KEY_NO_INIT');
                 } else {
                     return (_data[property]);
                 }
             }
         };
 
         /**
          * Reloads the Key information from gnupg. This is only useful if you
          * use the GPGME_Keys cached. Note that this is a performance hungry
          * operation. If you desire more than a few refreshs, it may be
          * advisable to run {@link Keyring.getKeys} instead.
          * @returns {Promise<GPGME_Key|GPGME_Error>}
          * @async
          */
         this.refreshKey = function() {
             let me = this;
             return new Promise(function(resolve, reject) {
                 if (!_data.fingerprint){
                     reject(gpgme_error('KEY_INVALID'));
                 }
                 let msg = createMessage('keylist');
                 msg.setParameter('sigs', true);
                 msg.setParameter('keys', _data.fingerprint);
                 msg.post().then(function(result){
                     if (result.keys.length === 1){
                         me.setKeyData(result.keys[0]);
                         me.getHasSecret().then(function(){
                             me.getArmor().then(function(){
                                 resolve(me);
                             }, function(error){
                                 reject(error);
                             });
                         }, function(error){
                             reject(error);
                         });
                     } else {
                         reject(gpgme_error('KEY_NOKEY'));
                     }
                 }, function (error) {
                     reject(gpgme_error('GNUPG_ERROR'), error);
                 });
             });
         };
 
         /**
          * Query the armored block of the Key directly from gnupg. Please note
          * that this will not get you any export of the secret/private parts of
          * a Key
          * @returns {Promise<String|GPGME_Error>}
          * @async
          */
         this.getArmor = function(){
             return new Promise(function(resolve, reject) {
                 if (!_data.fingerprint){
                     reject(gpgme_error('KEY_INVALID'));
                 }
                 let msg = createMessage('export');
                 msg.setParameter('armor', true);
                 msg.setParameter('keys', _data.fingerprint);
                 msg.post().then(function(result){
                     _data.armored = result.data;
                     resolve(result.data);
                 }, function(error){
                     reject(error);
                 });
             });
         };
 
         /**
          * Find out if the Key includes a secret part. Note that this is a
          * rather nonperformant operation, as it needs to query gnupg twice.
          * If you want this inforrmation about more than a few Keys, it may be
          * advisable to run {@link Keyring.getKeys} instead.
          * @returns {Promise<Boolean|GPGME_Error>} True if a secret/private Key
          * is available in the gnupg Keyring
          * @async
          */
         this.getHasSecret = function (){
             return new Promise(function(resolve, reject) {
                 if (!_data.fingerprint){
                     reject(gpgme_error('KEY_INVALID'));
                 }
                 let msg = createMessage('keylist');
                 msg.setParameter('keys', _data.fingerprint);
                 msg.setParameter('secret', true);
                 msg.post().then(function(result){
                     _data.hasSecret = null;
                     if (
                         result.keys &&
                         result.keys.length === 1 &&
                         result.keys[0].secret === true
                     ) {
                         _data.hasSecret = true;
                         resolve(true);
                     } else {
                         _data.hasSecret = false;
                         resolve(false);
                     }
                 }, function(error){
                     reject(error);
                 });
             });
         };
 
         /**
          * Deletes the (public) Key from the GPG Keyring. Note that a deletion
          * of a secret key is not supported by the native backend.
          * @returns {Promise<Boolean|GPGME_Error>} Success if key was deleted,
          * rejects with a GPG error otherwise.
          */
         this.delete= function (){
             return new Promise(function(resolve, reject){
                 if (!_data.fingerprint){
                     reject(gpgme_error('KEY_INVALID'));
                 }
                 let msg = createMessage('delete');
                 msg.setParameter('key', _data.fingerprint);
                 msg.post().then(function(result){
                     resolve(result.success);
                 }, function(error){
                     reject(error);
                 });
             });
         };
     }
 
     /**
      * @returns {String} The fingerprint defining this Key
      */
     get fingerprint(){
         return this.getFingerprint();
     }
 
     /**
      * Property for the export of armored Key. If the armored Key is not
      * cached, it returns an {@link GPGME_Error} with code 'KEY_NO_INIT'.
      * Running {@link refreshKey} may help in this case.
      * @returns {String|GPGME_Error} The armored public Key block.
      */
     get armored(){
         return this.get('armored', true);
     }
 }
 
 /**
  * Representing a subkey of a Key.
  * @class
  * @protected
  */
 class GPGME_Subkey {
 
     /**
      * Initializes with the json data sent by gpgme-json
      * @param {Object} data
      * @private
      */
     constructor(data){
         let _data = {};
         let keys = Object.keys(data);
 
         /**
          * Validates a subkey property against {@link validSubKeyProperties} and
          * sets it if validation is successful
          * @param {String} property
          * @param {*} value
          * @param private
          */
         const setProperty = function (property, value){
             if (validSubKeyProperties.hasOwnProperty(property)){
                 if (validSubKeyProperties[property](value) === true) {
                     if (property === 'timestamp' || property === 'expires'){
                         _data[property] = new Date(value * 1000);
                     } else {
                         _data[property] = value;
                     }
                 }
             }
         };
         for (let i=0; i< keys.length; i++) {
             setProperty(keys[i], data[keys[i]]);
         }
 
         /**
          * Fetches any information about this subkey
          * @param {String} property Information to request
          * @returns {String | Number | Date}
          */
         this.get = function(property) {
             if (_data.hasOwnProperty(property)){
                 return (_data[property]);
             }
         };
     }
 }
 
 /**
  * Representing user attributes associated with a Key or subkey
  * @class
  * @protected
  */
 class GPGME_UserId {
 
     /**
      * Initializes with the json data sent by gpgme-json
      * @param {Object} data
      * @private
      */
     constructor(data){
         let _data = {};
         let keys = Object.keys(data);
         const setProperty = function(property, value){
             if (validUserIdProperties.hasOwnProperty(property)){
                 if (validUserIdProperties[property](value) === true) {
                     if (property === 'last_update'){
                         _data[property] = new Date(value*1000);
                     } else {
                         _data[property] = value;
                     }
                 }
             }
         };
         for (let i=0; i< keys.length; i++) {
             setProperty(keys[i], data[keys[i]]);
         }
 
         /**
          * Validates a subkey property against {@link validUserIdProperties} and
          * sets it if validation is successful
          * @param {String} property
          * @param {*} value
          * @param private
          */
 
 
         /**
          * Fetches information about the user
          * @param {String} property Information to request
          * @returns {String | Number}
          */
         this.get = function (property) {
             if (_data.hasOwnProperty(property)){
                 return (_data[property]);
             }
         };
     }
 }
 
 /**
  * Validation definition for userIds. Each valid userId property is represented
  * as a key- Value pair, with their value being a validation function to check
  * against
  * @protected
  * @const
  */
 const validUserIdProperties = {
     'revoked': function(value){
         return typeof(value) === 'boolean';
     },
     'invalid':  function(value){
         return typeof(value) === 'boolean';
     },
     'uid': function(value){
         if (typeof(value) === 'string' || value === ''){
             return true;
         }
         return false;
     },
     'validity': function(value){
         if (typeof(value) === 'string'){
             return true;
         }
         return false;
     },
     'name': function(value){
         if (typeof(value) === 'string' || value === ''){
             return true;
         }
         return false;
     },
     'email': function(value){
         if (typeof(value) === 'string' || value === ''){
             return true;
         }
         return false;
     },
     'address': function(value){
         if (typeof(value) === 'string' || value === ''){
             return true;
         }
         return false;
     },
     'comment': function(value){
         if (typeof(value) === 'string' || value === ''){
             return true;
         }
         return false;
     },
     'origin':  function(value){
         return Number.isInteger(value);
     },
     'last_update':  function(value){
         return Number.isInteger(value);
     }
 };
 
 /**
  * Validation definition for subKeys. Each valid userId property is represented
  * as a key-value pair, with the value being a validation function
  * @protected
  * @const
  */
 const validSubKeyProperties = {
     'invalid': function(value){
         return typeof(value) === 'boolean';
     },
     'can_encrypt': function(value){
         return typeof(value) === 'boolean';
     },
     'can_sign': function(value){
         return typeof(value) === 'boolean';
     },
     'can_certify':  function(value){
         return typeof(value) === 'boolean';
     },
     'can_authenticate':  function(value){
         return typeof(value) === 'boolean';
     },
     'secret': function(value){
         return typeof(value) === 'boolean';
     },
     'is_qualified': function(value){
         return typeof(value) === 'boolean';
     },
     'is_cardkey':  function(value){
         return typeof(value) === 'boolean';
     },
     'is_de_vs':  function(value){
         return typeof(value) === 'boolean';
     },
     'pubkey_algo_name': function(value){
         return typeof(value) === 'string';
         // TODO: check against list of known?['']
     },
     'pubkey_algo_string': function(value){
         return typeof(value) === 'string';
         // TODO: check against list of known?['']
     },
     'keyid': function(value){
         return isLongId(value);
     },
     'pubkey_algo': function(value) {
         return (Number.isInteger(value) && value >= 0);
     },
     'length': function(value){
         return (Number.isInteger(value) && value > 0);
     },
     'timestamp': function(value){
         return (Number.isInteger(value) && value > 0);
     },
     'expires': function(value){
         return (Number.isInteger(value) && value > 0);
     }
 };
 
 /**
  * Validation definition for Keys. Each valid Key property is represented
  * as a key-value pair, with their value being a validation function
  * @protected
  * @const
  */
 const validKeyProperties = {
     'fingerprint': function(value){
         return isFingerprint(value);
     },
     'armored': function(value){
         return typeof(value === 'string');
     },
     'revoked': function(value){
         return typeof(value) === 'boolean';
     },
     'expired': function(value){
         return typeof(value) === 'boolean';
     },
     'disabled': function(value){
         return typeof(value) === 'boolean';
     },
     'invalid': function(value){
         return typeof(value) === 'boolean';
     },
     'can_encrypt': function(value){
         return typeof(value) === 'boolean';
     },
     'can_sign': function(value){
         return typeof(value) === 'boolean';
     },
     'can_certify': function(value){
         return typeof(value) === 'boolean';
     },
     'can_authenticate': function(value){
         return typeof(value) === 'boolean';
     },
     'secret': function(value){
         return typeof(value) === 'boolean';
     },
     'is_qualified': function(value){
         return typeof(value) === 'boolean';
     },
     'protocol': function(value){
         return typeof(value) === 'string';
         //TODO check for implemented ones
     },
     'issuer_serial': function(value){
         return typeof(value) === 'string';
     },
     'issuer_name': function(value){
         return typeof(value) === 'string';
     },
     'chain_id': function(value){
         return typeof(value) === 'string';
     },
     'owner_trust': function(value){
         return typeof(value) === 'string';
     },
     'last_update': function(value){
         return (Number.isInteger(value));
         //TODO undefined/null possible?
     },
     'origin': function(value){
         return (Number.isInteger(value));
     },
     'subkeys': function(value){
         return (Array.isArray(value));
     },
     'userids': function(value){
         return (Array.isArray(value));
     },
     'tofu': function(value){
         return (Array.isArray(value));
     },
     'hasSecret': function(value){
         return typeof(value) === 'boolean';
     }
 
 };
diff --git a/lang/js/src/Keyring.js b/lang/js/src/Keyring.js
index 31c4f92b..8715a47d 100644
--- a/lang/js/src/Keyring.js
+++ b/lang/js/src/Keyring.js
@@ -1,413 +1,415 @@
 /* gpgme.js - Javascript integration for gpgme
  * Copyright (C) 2018 Bundesamt für Sicherheit in der Informationstechnik
  *
  * This file is part of GPGME.
  *
  * GPGME 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.
  *
  * GPGME 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 program; if not, see <http://www.gnu.org/licenses/>.
  * SPDX-License-Identifier: LGPL-2.1+
  *
  * Author(s):
  *     Maximilian Krambach <mkrambach@intevation.de>
  */
 
 
 import {createMessage} from './Message';
 import {createKey} from './Key';
 import { isFingerprint } from './Helpers';
 import { gpgme_error } from './Errors';
 
 /**
  * This class offers access to the gnupg keyring
  */
 export class GPGME_Keyring {
     constructor(){
 
         /**
          * Queries Keys (all Keys or a subset) from gnupg.
          *
          * @param {String | Array<String>} pattern (optional) A pattern to
          * search for in userIds or KeyIds.
          * @param {Boolean} prepare_sync (optional) if set to true, the
          * 'hasSecret' and 'armored' properties will be fetched for the Keys as
          * well. These require additional calls to gnupg, resulting in a
          * performance hungry operation. Calling them here enables direct,
          * synchronous use of these properties for all keys, without having to
          * resort to a refresh() first.
          * @param {Boolean} search (optional) retrieve Keys from external
          * servers with the method(s) defined in gnupg (e.g. WKD/HKP lookup)
-         * @returns {Promise.<Array<GPGME_Key>|GPGME_Error>}
+         * @returns {Promise<Array<GPGME_Key>>}
          * @static
          * @async
          */
         this.getKeys = function(pattern, prepare_sync=false, search=false){
             return new Promise(function(resolve, reject) {
                 let msg = createMessage('keylist');
                 if (pattern !== undefined && pattern !== null){
                     msg.setParameter('keys', pattern);
                 }
                 msg.setParameter('sigs', true);
                 if (search === true){
                     msg.setParameter('locate', true);
                 }
                 msg.post().then(function(result){
                     let resultset = [];
                     if (result.keys.length === 0){
                         resolve([]);
                     } else {
                         let secondrequest;
                         if (prepare_sync === true) {
                             secondrequest = function() {
                                 let msg2 = createMessage('keylist');
                                 msg2.setParameter('keys', pattern);
                                 msg2.setParameter('secret', true);
                                 return msg2.post();
                             };
                         } else {
                             secondrequest = function() {
                                 return Promise.resolve(true);
                             };
                         }
                         secondrequest().then(function(answer) {
-                            for (let i=0; i < result.keys.length; i++){
+                            for (let i=0; i < answer.keys.length; i++){
                                 if (prepare_sync === true){
-                                    result.keys[i].hasSecret = false;
+                                    result.keys[i].hasSecret = undefined;
                                     if (answer && answer.keys) {
                                         for (let j=0;
                                             j < answer.keys.length; j++ ){
                                             const a = answer.keys[j];
                                             const b = result.keys[i];
                                             if (
                                                 a.fingerprint === b.fingerprint
                                             ) {
                                                 if (a.secret === true){
-                                                    a.hasSecret = true;
+                                                    b.hasSecret = true;
+                                                } else {
+                                                    b.hasSecret = false;
                                                 }
                                                 break;
                                             }
                                         }
                                         // TODO getArmor() to be used in sync
                                     }
                                 }
                                 let k = createKey(result.keys[i].fingerprint);
                                 k.setKeyData(result.keys[i]);
                                 resultset.push(k);
                             }
                             resolve(resultset);
                         }, function(error){
                             reject(error);
                         });
                     }
                 });
             });
         };
 
         /**
          * @typedef {Object} exportResult The result of a getKeysArmored
          * operation.
          * @property {String} armored The public Key(s) as armored block. Note
          * that the result is one armored block, and not a block per key.
          * @property {Array<String>} secret_fprs (optional) list of
          * fingerprints for those Keys that also have a secret Key available in
          * gnupg. The secret key will not be exported, but the fingerprint can
          * be used in operations needing a secret key.
          */
 
         /**
          * Fetches the armored public Key blocks for all Keys matching the
          * pattern (if no pattern is given, fetches all keys known to gnupg).
          * @param {String|Array<String>} pattern (optional) The Pattern to
          * search for
          * @param {Boolean} with_secret_fpr (optional) also return a list of
          * fingerprints for the keys that have a secret key available
          * @returns {Promise<exportResult|GPGME_Error>} Object containing the
          * armored Key(s) and additional information.
          * @static
          * @async
          */
         this.getKeysArmored = function(pattern, with_secret_fpr) {
             return new Promise(function(resolve, reject) {
                 let msg = createMessage('export');
                 msg.setParameter('armor', true);
                 if (with_secret_fpr === true) {
                     msg.setParameter('with-sec-fprs', true);
                 }
                 if (pattern !== undefined && pattern !== null){
                     msg.setParameter('keys', pattern);
                 }
                 msg.post().then(function(answer){
                     const result = {armored: answer.data};
                     if (with_secret_fpr === true
                         && answer.hasOwnProperty('sec-fprs')
                     ) {
                         result.secret_fprs = answer['sec-fprs'];
                     }
                     resolve(result);
                 }, function(error){
                     reject(error);
                 });
             });
         };
 
         /**
          * Returns the Key used by default in gnupg.
          * (a.k.a. 'primary Key or 'main key').
          * It looks up the gpg configuration if set, or the first key that
          * contains a secret key.
          *
          * @returns {Promise<GPGME_Key|GPGME_Error>}
          * @async
          * @static
          */
         this.getDefaultKey = function() {
             let me = this;
             return new Promise(function(resolve, reject){
                 let msg = createMessage('config_opt');
                 msg.setParameter('component', 'gpg');
                 msg.setParameter('option', 'default-key');
                 msg.post().then(function(response){
                     if (response.value !== undefined
                         && response.value.hasOwnProperty('string')
                         && typeof(response.value.string) === 'string'
                     ){
                         me.getKeys(response.value.string,true).then(
                             function(keys){
                                 if(keys.length === 1){
                                     resolve(keys[0]);
                                 } else {
                                     reject(gpgme_error('KEY_NO_DEFAULT'));
                                 }
                             }, function(error){
                                 reject(error);
                             });
                     } else {
                         // TODO: this is overly 'expensive' in communication
                         // and probably performance, too
                         me.getKeys(null,true).then(function(keys){
                             for (let i=0; i < keys.length; i++){
                                 if (keys[i].get('hasSecret') === true){
                                     resolve(keys[i]);
                                     break;
                                 }
                                 if (i === keys.length -1){
                                     reject(gpgme_error('KEY_NO_DEFAULT'));
                                 }
                             }
                         }, function(error){
                             reject(error);
                         });
                     }
                 }, function(error){
                     reject(error);
                 });
             });
         };
 
         /**
          * @typedef {Object} importResult The result of a Key update
          * @property {Object} summary Numerical summary of the result. See the
          * feedbackValues variable for available Keys values and the gnupg
          * documentation.
          * https://www.gnupg.org/documentation/manuals/gpgme/Importing-Keys.html
          * for details on their meaning.
          * @property {Array<importedKeyResult>} Keys Array of Object containing
          * GPGME_Keys with additional import information
          *
          */
 
         /**
          * @typedef {Object} importedKeyResult
          * @property {GPGME_Key} key The resulting key
          * @property {String} status:
          *  'nochange' if the Key was not changed,
          *  'newkey' if the Key was imported in gpg, and did not exist
          *    previously,
          *  'change' if the key existed, but details were updated. For details,
          *    Key.changes is available.
          * @property {Boolean} changes.userId Changes in userIds
          * @property {Boolean} changes.signature Changes in signatures
          * @property {Boolean} changes.subkey Changes in subkeys
          */
 
         /**
          * Import an armored Key block into gnupg. Note that this currently
          * will not succeed on private Key blocks.
          * @param {String} armored Armored Key block of the Key(s) to be
          * imported into gnupg
          * @param {Boolean} prepare_sync prepare the keys for synched use
          * (see {@link getKeys}).
          * @returns {Promise<importResult>} A summary and Keys considered.
          * @async
          * @static
          */
         this.importKey = function (armored, prepare_sync) {
             let feedbackValues = ['considered', 'no_user_id', 'imported',
                 'imported_rsa', 'unchanged', 'new_user_ids', 'new_sub_keys',
                 'new_signatures', 'new_revocations', 'secret_read',
                 'secret_imported', 'secret_unchanged', 'skipped_new_keys',
                 'not_imported', 'skipped_v3_keys'];
             if (!armored || typeof(armored) !== 'string'){
                 return Promise.reject(gpgme_error('PARAM_WRONG'));
             }
             let me = this;
             return new Promise(function(resolve, reject){
                 let msg = createMessage('import');
                 msg.setParameter('data', armored);
                 msg.post().then(function(response){
                     let infos = {};
                     let fprs = [];
                     for (let res=0; res<response.result.imports.length; res++){
                         let result = response.result.imports[res];
                         let status = '';
                         if (result.status === 0){
                             status = 'nochange';
                         } else if ((result.status & 1) === 1){
                             status = 'newkey';
                         } else {
                             status = 'change';
                         }
                         let changes = {};
                         changes.userId = (result.status & 2) === 2;
                         changes.signature = (result.status & 4) === 4;
                         changes.subkey = (result.status & 8) === 8;
                         //16 new secret key: not implemented
 
                         fprs.push(result.fingerprint);
                         infos[result.fingerprint] = {
                             changes: changes,
                             status: status
                         };
                     }
                     let resultset = [];
                     if (prepare_sync === true){
                         me.getKeys(fprs, true).then(function(result){
                             for (let i=0; i < result.length; i++) {
                                 resultset.push({
                                     key: result[i],
                                     changes:
                                         infos[result[i].fingerprint].changes,
                                     status: infos[result[i].fingerprint].status
                                 });
                             }
                             let summary = {};
                             for (let i=0; i < feedbackValues.length; i++ ){
                                 summary[feedbackValues[i]] =
                                     response[feedbackValues[i]];
                             }
                             resolve({
                                 Keys:resultset,
                                 summary: summary
                             });
                         }, function(error){
                             reject(error);
                         });
                     } else {
                         for (let i=0; i < fprs.length; i++) {
                             resultset.push({
                                 key: createKey(fprs[i]),
                                 changes: infos[fprs[i]].changes,
                                 status: infos[fprs[i]].status
                             });
                         }
                         resolve(resultset);
                     }
 
                 }, function(error){
                     reject(error);
                 });
 
 
             });
 
 
         };
 
         /**
          * Convenience function for deleting a Key. See {@link Key.delete} for
          * further information about the return values.
          * @param {String} fingerprint
          * @returns {Promise<Boolean|GPGME_Error>}
          * @async
          * @static
          */
         this.deleteKey = function(fingerprint){
             if (isFingerprint(fingerprint) === true) {
                 let key = createKey(fingerprint);
                 return key.delete();
             } else {
                 return Promise.reject(gpgme_error('KEY_INVALID'));
             }
         };
 
         /**
          * Generates a new Key pair directly in gpg, and returns a GPGME_Key
          * representing that Key. Please note that due to security concerns,
          * secret Keys can not be deleted or exported from inside gpgme.js.
          *
          * @param {String} userId The user Id, e.g. 'Foo Bar <foo@bar.baz>'
          * @param {String} algo (optional) algorithm (and optionally key size)
          * to be used. See {@link supportedKeyAlgos} below for supported
          * values.
          * @param {Date} expires (optional) Expiration date. If not set,
          * expiration will be set to 'never'
          *
          * @return {Promise<Key|GPGME_Error>}
          * @async
          */
         this.generateKey = function (userId, algo = 'default', expires){
             if (
                 typeof(userId) !== 'string' ||
                 supportedKeyAlgos.indexOf(algo) < 0 ||
                 (expires && !(expires instanceof Date))
             ){
                 return Promise.reject(gpgme_error('PARAM_WRONG'));
             }
             let me = this;
             return new Promise(function(resolve, reject){
                 let msg = createMessage('createkey');
                 msg.setParameter('userid', userId);
                 msg.setParameter('algo', algo );
                 if (expires){
                     msg.setParameter('expires',
                         Math.floor(expires.valueOf()/1000));
                 }
                 msg.post().then(function(response){
                     me.getKeys(response.fingerprint, true).then(
                         // TODO prepare_sync?
                         function(result){
                             resolve(result);
                         }, function(error){
                             reject(error);
                         });
                 }, function(error) {
                     reject(error);
                 });
             });
         };
     }
 }
 
 /**
  * List of algorithms supported for key generation. Please refer to the gnupg
  * documentation for details
  */
 const supportedKeyAlgos = [
     'default',
     'rsa', 'rsa2048', 'rsa3072', 'rsa4096',
     'dsa', 'dsa2048', 'dsa3072', 'dsa4096',
     'elg', 'elg2048', 'elg3072', 'elg4096',
     'ed25519',
     'cv25519',
     'brainpoolP256r1', 'brainpoolP384r1', 'brainpoolP512r1',
     'NIST P-256', 'NIST P-384', 'NIST P-521'
 ];
\ No newline at end of file