Commit 5c7711d

@@ -34,6 +34,7 @@ module Xml
           asymmetric_cipher: asymmetric_cipher,
           symmetric_cipher: symmetric_cipher
         ).to_xml(xml: xml)
+        yield xml if block_given?
       end
 
       # @deprecated Use {#encrypt_data_for} instead of this

@@ -3,7 +3,16 @@ xml.instruct!
 xml.Envelope do
   xml.Header do
     xml.Security do
-      encrypt_key_for(xml: xml, id: key_id)
+      encrypt_key_for(xml: xml, id: key_id) do |xml|
+        xml.KeyInfo do
+          xml.x509Data do
+            xml.X509IssuerSerial do
+              xml.X509IssuerName "blah"
+              xml.X509IssuerNumber 1
+            end
+          end
+        end
+      end
       xml.BinarySecurityToken ''
     end
   end