How can I copy binary data in Windows (preferably with Notepad++)?

I want to duplicate some binary data. The normal Ctrl+C command doesn't work in my editor (Notepad++), it copies data only up to the first NUL char. Is there any workaround?

In the Edit menu of Notepad++ (I'm using v5.9.2) under Paste Special there are actions to Copy, Cut, and Paste Binary Content.

The Notepad++ MIME Tools plugin and Base64 Encode/Decode feature can be used to copy small binary files (typically small jar or zip files) between remote systems using the clipboard.

1. Open the Binary file binary1.bin in Notepad++
2. Edit -> Select All (Ctrl+A)
3. Plugins -> MIME Tools -> Base64 Encode
4. Edit -> Select All (Ctrl+A)
5. Edit -> Copy (Ctrl+C)
6. Edit -> Undo (Ctrl+Z)
7. Move focus to a new Notepad++ tab
8. Edit -> Paste (Ctrl+v)
9. Edit -> Select All (Ctrl+A)
10. Plugins -> MIME Tools -> Base64 Decode
11. File -> Save As... binary2.bin