Description of the Issue

When I test the MD5 sum generator with cyrillic text it give me wrong sum

Steps to Reproduce the Issue

1. Type (or copy/paste) тест in the main window of Npp
2. Select the text and go to Tools > MD5 > Generate into clipboard
3. Paste the checksum - it is ebb5e89e8a94e9dd22abf5d915d112b2
4. Go to Tools > MD5 > Genetare...
5. Type (or copy/paste) тест in the MD5 window
6. The generated checksum is 98554ea0cb509620815fe5bf980246ec

Expected Behavior

Proper md5 chechsums in cyrillic

Actual Behavior

Wrong md5 checksums in cyrillic

Debug Information

Notepad++ v7.3 (32-bit)
Build time : Jan 1 2017 - 20:04:42
Path : D:\Install\Office Programs\Notepad++\notepad++.exe
Admin mode : ON
Local Conf mode : ON
OS : Windows 7
Plugins : ComparePlugin.dll mimeTools.dll NativeLang.dll NppExport.dll NppHasher.dll NppTextFX.dll PluginManager.dll

For the test I also use WinHasher and some online md5 generators

The wrong checksum is also generated with NppHasher.dll plugin