The folder is encrypted, can anyone help me see what software?

This is the business in order to protect their own copyright encryption, is encrypted do not want people to copy. It may be set up with read-only permissions. I have seen a U disk memory card batch read-only encryption expert software, that is, you can encrypt the U disk or memory card, do not allow others to copy copy set read-only permissions, so it is also impossible to delete 。。。。