diff --git a/README.md b/README.md
index f7e0b0c..229f012 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,13 @@ TODO
 
 * Only supports v3.
 
+# Argon2 support
+
+root directory contains shared libraris (libargon2*) which are built from
+https://github.com/authpass/argon2_ffi
+
+# OLD INFO:
+
 # TODO
 
 * For v4 argon2 support would be required. Unfortunately there are no dart 
diff --git a/lib/kdbx.dart b/lib/kdbx.dart
index 553522f..b5a9c2d 100644
--- a/lib/kdbx.dart
+++ b/lib/kdbx.dart
@@ -9,6 +9,7 @@ export 'src/kdbx_dao.dart' show KdbxDao;
 export 'src/kdbx_entry.dart';
 export 'src/kdbx_format.dart';
 export 'src/kdbx_group.dart';
+export 'src/crypto/key_encrypter_kdf.dart' show Argon2;
 export 'src/kdbx_header.dart'
     show
         KdbxException,
diff --git a/test/kdbx4_test.dart b/test/kdbx4_test.dart
index 71f98f7..c124abc 100644
--- a/test/kdbx4_test.dart
+++ b/test/kdbx4_test.dart
@@ -41,7 +41,6 @@ typedef Argon2Hash = Pointer<Utf8> Function(
 
 class Argon2Test implements Argon2 {
   Argon2Test() {
-//    final argon2lib = DynamicLibrary.open('libargon2.1.dylib');
     final argon2lib = Platform.isMacOS
         ? DynamicLibrary.open('libargon2_ffi.dylib')
         : DynamicLibrary.open('libargon2_ffi.so');