diff --git a/example/wv_cas_ecm_example b/example/wv_cas_ecm_example
index 1b4651b..d341ba0 100644
Binary files a/example/wv_cas_ecm_example and b/example/wv_cas_ecm_example differ
diff --git a/libmedia_cas_packager_sdk.so b/libmedia_cas_packager_sdk.so
index 889c083..cd3e69e 100755
Binary files a/libmedia_cas_packager_sdk.so and b/libmedia_cas_packager_sdk.so differ
diff --git a/media_cas_packager_sdk/public/wv_cas_ecm.h b/media_cas_packager_sdk/public/wv_cas_ecm.h
index 2b76cc2..47d5b20 100644
--- a/media_cas_packager_sdk/public/wv_cas_ecm.h
+++ b/media_cas_packager_sdk/public/wv_cas_ecm.h
@@ -17,9 +17,6 @@
 #include <vector>
 
 #include "util/status.h"
-#include "media_cas_packager_sdk/internal/ecm.h"
-#include "media_cas_packager_sdk/internal/ecm_generator.h"
-#include "protos/public/media_cas.pb.h"
 
 namespace widevine {
 namespace cas {
@@ -106,7 +103,9 @@ class WvCasEcm {
 
  private:
   bool initialized_ = false;
-  EcmInitParameters ecm_init_params_;
+  int content_iv_size_;
+  bool key_rotation_enabled_;
+  int crypto_mode_;
 };
 
 }  // namespace cas