CrococryptFile is a file encryption tool which creates encrypted archives of arbitrary files and folders.
The encryption features of CrococryptFile can be compared to a ZIP utility that uses ZIP's AES encryption. However, there are significant differences. CrococryptFile...

- encrypts all file and folder information including filenames, time/date and filesize information,
- disguises any information of the archive's content, because all data and meta-data is simply integrated into a giant file dump.

A *.croco file solely shows that it is indeed a CrococryptFile archive and which crypto suite (e.g., password-based or PGP-based AES-256 encryption ) is used.
CrococryptFile and all its clients are open-source.