Serhiy Storchaka <storchaka+cpyt...@gmail.com> added the comment:

>From the official ZIP files specification:

    This form of encryption is considered weak by today's standards
    and its use is recommended only for situations with
    low security needs or for compatibility with older .ZIP
    applications.

I think that the support of encrypting ZIP files using the traditional PKWARE 
encryption was intentionally omitted in the zipfile module, because we don't 
want to encourage using such weak encryption method. If you need to add 
encrypted data in the ZIP file, use third-party tools for encrypting it before 
adding to the ZIP file or encrypting the whole ZIP file after creating.

I'm -1 for adding support of weak encrypting.

Of course, adding support for the strong (AES) encryption in ZIP files would be 
nice. But this task is much more difficult.

----------
nosy: +alanmcintyre, serhiy.storchaka, twouters

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<https://bugs.python.org/issue34546>
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