'Python's zipfile library can't extract password protected file

For some reason, Python's zipfile library cannot extract the files in this password-protected zipfile archive. Here is the code I used:

import zipfile

zip_filename = 'extract_public_2018_20201006094007483_71129_20201001-20201006Texas.zip'

zipfile_password = b'&CkN52mKji3R8^4aI#7Z'

with zipfile.ZipFile(zip_filename) as myzip:
    myzip.extractall(pwd=zipfile_password)

This is the error I get: NotImplementedError: That compression method is not supported

I dug a little deeper and found that the compression method for the files inside this archive is 99. Where can I find what this compression method really is? And does this just mean I can't unzip this file using Python's zipfile librabry?

I'm using Python 3.8.

Solution 1:^[1]

PKWare's appnote says that 99 is:

99 - AE-x encryption marker (see APPENDIX E)

...

APPENDIX E - AE-x encryption marker

E.1 AE-x defines an alternate password-based encryption method used in ZIP files that is based on a file encryption utility developed by Dr. Brian Gladman. Information on Dr. Gladman's method is available at

http://www.gladman.me.uk/cryptography_technology/fileencrypt/

I'm guessing there are no libraries to help with that. You're probably stuck using 7z or PKZIP.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1

'Python's zipfile library can't extract password protected file

Solution 1:[1]

Sources

Related Questions

Solution 1:^[1]