Create password protected zip file? [duplicate]

Question

I'm using following code to create password protected zip file, from a file uploaded by user, in my Python34 application using zipFile. But when I open the zip file from windows, it doesn't ask for the password. I will be using the same password to read zip files from python later on. What am I doing wrong?

Here's my code:

pwdZipFilePath = uploadFilePath + "encryptedZipFiles/"
filePath = uploadFilePath

if not os.path.exists(pwdZipFilePath):        
      os.makedirs(pwdZipFilePath)

#save csv file to a path
fd, filePath = tempfile.mkstemp(suffix=source.name, dir=filePath)

with open(filePath, 'wb') as dest:
    shutil.copyfileobj(source, dest)

#convert that csv to zip
fd, pwdZipFilePath = tempfile.mkstemp(suffix=source.name + ".zip", dir=pwdZipFilePath)

with zipfile.ZipFile(pwdZipFilePath, 'w') as myzip:
    myzip.write(filePath)

    myzip.setpassword(b"tipi")

Answer 1

The builtin zipfile module does not support writing password-encrypted files (only reading). Either you could use pyminizip:

import pyminizip
pyminizip.compress("dummy.txt", "myzip.zip", "noneshallpass", compression_level)

Or, if you're on Windows/msysgit, and agnostic to the format:

import os
os.system('tar cz dummy.txt | openssl enc -aes-256-cbc -e -k noneshallpass > mypacked.enc')
os.remove('dummy.txt')
os.system('openssl enc -aes-256-cbc -d -k noneshallpass -in mypacked.enc | tar xz')

Answer 2

The documentation for zipfile indicates that ZipFile.setpassword sets the "default password to extract encrypted files."

At the very top of the documentation: "It supports decryption of encrypted files in ZIP archives, but it currently cannot create an encrypted file."

Edit: To create a password protected ZIP file, try a package like pyminizip.