I have a password-protected ZIP file that contains a single file. Also I have the same file outside the archive in a plain version. I know for sure that this is the same file. Is it possible to **determine the password used** for this archive?

To be clear, I want to know the *actual* password used for the ZIP file; I'm not trying to simply gain access to the ZIP file's content without knowing the password.

My question is not answered by this proposed [duplicate question](https://superuser.com/questions/96172/is-it-feasible-to-crack-zip-passwords). That question deals with accessing the ZIP file without knowing the password. I am trying to compute the password leveraging the fact I have the same file inside and outside the archive.