diff --git a/ios/Classes/DCWrapper/DCChatIdWrapper.swift b/ios/Classes/DCWrapper/DCChatIdWrapper.swift
new file mode 100644
index 0000000..34d2929
--- /dev/null
+++ b/ios/Classes/DCWrapper/DCChatIdWrapper.swift
@@ -0,0 +1,48 @@
+/*
+ * OPEN-XCHANGE legal information
+ *
+ * All intellectual property rights in the Software are protected by
+ * international copyright laws.
+ *
+ *
+ * In some countries OX, OX Open-Xchange and open xchange
+ * as well as the corresponding Logos OX Open-Xchange and OX are registered
+ * trademarks of the OX Software GmbH group of companies.
+ * The use of the Logos is not covered by the Mozilla Public License 2.0 (MPL 2.0).
+ * Instead, you are allowed to use these Logos according to the terms and
+ * conditions of the Creative Commons License, Version 2.5, Attribution,
+ * Non-commercial, ShareAlike, and the interpretation of the term
+ * Non-commercial applicable to the aforementioned license is published
+ * on the web site https://www.open-xchange.com/terms-and-conditions/.
+ *
+ * Please make sure that third-party modules and libraries are used
+ * according to their respective licenses.
+ *
+ * Any modifications to this package must retain all copyright notices
+ * of the original copyright holder(s) for the original code used.
+ *
+ * After any such modifications, the original and derivative code shall remain
+ * under the copyright of the copyright holder(s) and/or original author(s) as stated here:
+ * https://www.open-xchange.com/legal/. The contributing author shall be
+ * given Attribution for the derivative code and a license granting use.
+ *
+ * Copyright (C) 2016-2020 OX Software GmbH
+ * Mail: info@open-xchange.com
+ *
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This program 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 Mozilla Public License 2.0
+ * for more details.
+ */
+
+import Foundation
+
+class DcChatIdWrapper {
+    var chatId: Int32 = 0
+    var totalNumberOfParts: Int32 = 0
+}
diff --git a/ios/Classes/DCWrapper/DCContext.swift b/ios/Classes/DCWrapper/DCContext.swift
index 47fb313..1476d24 100644
--- a/ios/Classes/DCWrapper/DCContext.swift
+++ b/ios/Classes/DCWrapper/DCContext.swift
@@ -357,6 +357,24 @@ class DcContext {
     func getNextMedia(messageId: UInt32, dir: Int32, msgTypeOne: Int32, msgTypeTwo: Int32, msgTypeThree: Int32) -> UInt32 {
         return dc_get_next_media(DcContext.contextPointer, messageId, dir, msgTypeOne, msgTypeTwo, msgTypeThree)
     }
+    
+    func decryptMessageInMemory(contentType: String, content: String, senderAddress: String, chatIdWrapper: DcChatIdWrapper) -> String? {
+//        var totalNumberOfParts: UnsafeMutablePointer<Int32>?
+//        var chatId: UnsafeMutablePointer<Int32>?
+//
+//        guard let cMessage = dc_decrypt_message_in_memory(
+//            DcContext.contextPointer,
+//            contentType,
+//            content,
+//            senderAddress,
+//            0,
+//            totalNumberOfParts,
+//            chatId) else {
+//                return nil
+//        }
+//        return String(cString: cMessage)
+        return nil
+    }
 
     // MARK: - General
 
diff --git a/ios/Classes/Handler/ContextCallHandler.swift b/ios/Classes/Handler/ContextCallHandler.swift
index 2af90ce..3fbe98b 100644
--- a/ios/Classes/Handler/ContextCallHandler.swift
+++ b/ios/Classes/Handler/ContextCallHandler.swift
@@ -181,6 +181,8 @@ class ContextCallHandler: MethodCallHandling {
             getContactIdByAddress(methodCall: call, result: result)
         case Method.Context.GET_NEXT_MEDIA:
             getNextMedia(methodCall: call, result: result)
+        case Method.Context.DECRYPT_IN_MEMORY:
+            decryptMessageInMemory(methodCall: call, result: result)
         default:
             Utils.logEventAndDelegate(logLevel: SwiftyBeaver.Level.error, message: "Context: Failing for \(call.method)")
             result(FlutterMethodNotImplemented)
@@ -366,6 +368,23 @@ class ContextCallHandler: MethodCallHandling {
 
         result(nextMessageId)
     }
+    
+    fileprivate func decryptMessageInMemory(methodCall: FlutterMethodCall, result: FlutterResult) {
+//        if !methodCall.contains(keys: [Argument.CONTENT, Argument.CONTENT_TYPE, Argument.ADDRESS]) {
+//            Method.Error.missingArgument("'\(Argument.CONTENT)', '\(Argument.CONTENT_TYPE)' or '\(Argument.ADDRESS)'", result: result)
+//            return
+//        }
+//
+//        guard let content = methodCall.stringValue(for: Argument.CONTENT, result: result),
+//            let contentType = methodCall.stringValue(for: Argument.CONTENT_TYPE, result: result),
+//            let address = methodCall.stringValue(for: Argument.ADDRESS, result: result) else {
+//                Method.Error.missingArgumentValues(for: [Argument.CONTENT, Argument.CONTENT_TYPE, Argument.ADDRESS], result: result)
+//                return
+//        }
+        
+        //TODO: Finish Implementation!!!
+//        context.decryptMessageInMemory(contentType: contentType, content: content, senderAddress: address, chatIdWrapper: <#T##DcChatIdWrapper#>)
+    }
 
     // MARK: - Chat Related
 
diff --git a/ios/Classes/Helper/Argument.swift b/ios/Classes/Helper/Argument.swift
index 7dd1cf3..887b878 100644
--- a/ios/Classes/Helper/Argument.swift
+++ b/ios/Classes/Helper/Argument.swift
@@ -81,6 +81,8 @@ struct Argument {
     static let MESSAGE_TYPE_TWO        = "messageTypeTwo"
     static let MESSAGE_TYPE_THREE      = "messageTypeThree"
     static let MINIMAL_SETUP           = "minimalSetup"
+    static let CONTENT                 = "content"
+    static let CONTENT_TYPE            = "contentType"
 
     struct Error {
         static let MISSING       = "1"
diff --git a/ios/Classes/Helper/Method.swift b/ios/Classes/Helper/Method.swift
index 79b6887..b19e0aa 100644
--- a/ios/Classes/Helper/Method.swift
+++ b/ios/Classes/Helper/Method.swift
@@ -218,6 +218,7 @@ extension Method {
         static let GET_CONTACT_ID_BY_ADDRESS            = "context_getContactIdByAddress"
         static let GET_NEXT_MEDIA                       = "context_getNextMedia"
         static let CLOSE                                = "context_close"
+        static let DECRYPT_IN_MEMORY                    = "context_decryptInMemory"
     }
 
 }