diff --git a/hermineConnect.php b/hermineConnect.php
index eb1400d..e0ea02c 100644
--- a/hermineConnect.php
+++ b/hermineConnect.php
@@ -1,7 +1,7 @@
 <?php
 /*
     Nenninger N-Tools.de
-    Version 1.15
+    Version 1.16
 
   */
 
@@ -116,7 +116,7 @@ class UUID {
 
 
 class hermineConnect{
-	private $VERSION = '1.15';
+	private $VERSION = '1.16';
 	private $MACHINENAME = 'default';
 	private $hermineServer = 'https://api.thw-messenger.de';
 	private $connectorID = "";
@@ -188,7 +188,7 @@ class hermineConnect{
 		curl_close($this->cURL);
 	}
 
-	function request($_url,$_data,$_files=[]){   
+	function request($_url,$_data,$_files=[],$_rowData=false){   
 		$_data['device_id'] = $this->connectorID;
 		if($this->client_key != '')
 			$_data['client_key'] = $this->client_key;
@@ -224,13 +224,17 @@ class hermineConnect{
 				echo "\n\nSendheader->:\n".print_r(curl_getinfo($this->cURL, CURLINFO_HEADER_OUT),true); 
 				echo "\n\nretdata->:\n".print_r($data,true);        
 			} 
-			$data = json_decode($data);
-			if($data->status->value === "OK"){
-				$this->lasterror = '';
-				return $data->payload;
+			if(!$_rowData){
+				$data = json_decode($data);
+				if($data->status->value === "OK"){
+					$this->lasterror = '';
+					return $data->payload;
+				}else{
+					$this->lasterror = $data;
+					return false;
+				}
 			}else{
-				$this->lasterror = $data;
-				return false;
+				return $data;
 			}
 		} else {
 			$this->lasterror = 'Curl error: ' . curl_error($this->cURL);
@@ -278,31 +282,38 @@ class hermineConnect{
 		}
 	}
 
-	function _get_conversation_key($_target){
-		if($_target[0]=='conversation'){
-			if(!isset($this->key_cache_conversations[$_target[1]])){
-				$data = [ "conversation_id" => $_target[1]
-						];
-				$response = $this->request($this->hermineServer."/message/conversation",$data);
-				$this->key_cache_conversations[$_target[1]] = $response->conversation->key;
-			}
-			if(openssl_private_decrypt(base64_decode($this->key_cache_conversations[$_target[1]]),$ret,$this->private_key,OPENSSL_PKCS1_OAEP_PADDING))
-				return $ret;
-			else
-				return false;
-		}else if($_target[0]=='channel'){
-			if(!isset($this->key_cache_channels[$_target[1]])){
-				$data = [ "channel_id" => $_target[1],
-						 "without_members" => true
-						];
-				$response = $this->request($this->hermineServer."/channels/info",$data);
-				$this->key_cache_channels[$_target[1]] = $response->channels->key;
+	function _get_conversation_key($_target,$_key=''){
+		if($_key == ''){
+			if($_target[0]=='conversation'){
+				if(!isset($this->key_cache_conversations[$_target[1]])){
+					$data = [ "conversation_id" => $_target[1]
+							];
+					$response = $this->request($this->hermineServer."/message/conversation",$data);
+					$this->key_cache_conversations[$_target[1]] = $response->conversation->key;
+				}
+				if(openssl_private_decrypt(base64_decode($this->key_cache_conversations[$_target[1]]),$ret,$this->private_key,OPENSSL_PKCS1_OAEP_PADDING))
+					return $ret;
+				else
+					return false;
+			}else if($_target[0]=='channel'){
+				if(!isset($this->key_cache_channels[$_target[1]])){
+					$data = [ "channel_id" => $_target[1],
+							 "without_members" => true
+							];
+					$response = $this->request($this->hermineServer."/channels/info",$data);
+					$this->key_cache_channels[$_target[1]] = $response->channels->key;
 
+				}
+				if(openssl_private_decrypt(base64_decode($this->key_cache_channels[$_target[1]]),$ret,$this->private_key,OPENSSL_PKCS1_OAEP_PADDING))
+					return $ret;
+				else
+					return false;
 			}
-			if(openssl_private_decrypt(base64_decode($this->key_cache_channels[$_target[1]]),$ret,$this->private_key,OPENSSL_PKCS1_OAEP_PADDING))
-				return $ret;
-			else
-				return false;
+		}else{
+			if(openssl_private_decrypt(base64_decode($_key),$ret,$this->private_key,OPENSSL_PKCS1_OAEP_PADDING))
+					return $ret;
+				else
+					return false;
 		}
 	}
 
@@ -516,6 +527,48 @@ class hermineConnect{
 			return false;
 		}
 	}
+	
+	function _file_info($_id){
+		$data = [
+			"file_id" => $_id
+		];
+		
+		$response = $this->request($this->hermineServer."/file/info",$data);
+
+		if($response !== false){
+			return $response;
+		}else{
+			return false;
+		}
+	}
+	
+	function _download_file($_id){
+		$fileInfo = $this->_file_info($_id);
+		//print_r($fileInfo);
+		$response = $this->request($this->hermineServer."/file/download?id=".$_id,[],[],true);
+		
+		$ret = [];
+
+		if($response !== false){
+			$ret[0]['name'] = $fileInfo->file->name;
+			$ret[0]['mime'] = $fileInfo->file->mime;
+			if($fileInfo->file->encrypted){
+				$key = $fileInfo->file->keys[0];
+				$conversation_key = $this->_get_conversation_key([$key->type,$key->chat_id],$key->chat_key);
+				$decryptedkey = $this->_decrypt_aes(base64_encode(hex2bin($key->key)), $conversation_key, hex2bin($key->iv));
+				$decrypted = $this->_decrypt_aes(base64_encode($response), $decryptedkey, hex2bin($fileInfo->file->e2e_iv));
+				if($decrypted !== false)
+					$ret[1] = $decrypted;
+				else
+					return '[!!decrypterror!!]';
+			}else{
+				$ret[1] = $response;
+			}
+		}else{
+			$ret = false;
+		}
+		return $ret;
+	}
 
 	function _delete_files($_ids=[]){
 		$data = [
@@ -714,6 +767,10 @@ class hermineConnect{
 		return $this->_delete_files($_ids);
 	}
 	
+	public function download_file($_id){
+		return $this->_download_file($_id);
+	}
+	
 	public function open_conversation($_members){
 		return $this->_open_conversation($_members);
 	}
diff --git a/readme.txt b/readme.txt
index 58c7f92..2fc9f17 100644
--- a/readme.txt
+++ b/readme.txt
@@ -12,6 +12,7 @@ Das Speichern von Zugangsdaten auf öffentlichen Servern stellt ein hohes Risiko
     * V1.13  26.11.2023 -> open_conversation eingebaut
     * V1.14 -> 231220 sendmsg: Text wird jetzt als Markdown formatiert markiert (Parameter "metainfo")
     * V1.15 -> 240208 Die Logindaten und der Keks werden jetzt von der php Datei aus im Unterverzeichnis /data gespeichert (muss von Hand erstellt werden)
+    * V1.16 -> 240820 neue Funktion "download_file($_id)"
 
 
     Formatierungen Markdown:
@@ -51,6 +52,8 @@ Das Speichern von Zugangsdaten auf öffentlichen Servern stellt ein hohes Risiko
       
       list_uploaded_chat_files($_search); -< array
       
+      download_file($_id) -< array
+      
       delete_files($_ids=[]) -< boolean
       
       open_conversation($_members) -< array