1 files changed, 14 insertions, 0 deletions
diff --git a/lang/js/src/Message.js b/lang/js/src/Message.js
index 6a59c3e0..932212a6 100644
--- a/lang/js/src/Message.js
+++ b/lang/js/src/Message.js
@@ -41,6 +41,7 @@ export class GPGME_Message {
 
     constructor(operation){
         this.operation = operation;
+        this._expected = 'string';
     }
 
     set operation (op){
@@ -58,6 +59,19 @@ export class GPGME_Message {
         return this._msg.op;
     }
 
+    set expected(string){
+        if (string === 'base64'){
+            this._expected = 'base64';
+        }
+    }
+
+    get expected() {
+       if (this._expected === "base64"){
+           return this._expected;
+       }
+       return "string";
+    }
+
     /**
      * Sets a parameter for the message. Note that the operation has to be set
      * first, to be able to check if the parameter is permittted