Windows 10: How do I add aes-256 decryption support for zip files to Windows 10

Discus and support How do I add aes-256 decryption support for zip files to Windows 10 in Windows 10 Network and Sharing to solve the problem; We are in the medical industry and our users receive zip files that are password protected using AES encryption. How can I add support to the Windows... Discussion in 'Windows 10 Network and Sharing' started by EReedVC, Jun 4, 2024.

  1. EREEDVC
    EReedVC Win User

    How do I add aes-256 decryption support for zip files to Windows 10


    We are in the medical industry and our users receive zip files that are password protected using AES encryption. How can I add support to the Windows File Explorer for AES encryption? We do not want to install third party apps like 7-Zip or WinRAR for this support. Is there an update to Windows 10, or an additional Windows component like PowerToys, that can enable the additional decryption methods for zip files?

    :)
     
    EReedVC, Jun 4, 2024
    #1
  2. DAI
    Dai Win User

    Do Windows 8.1 or 10 support AES-256 in zip files?

    I tried this right now. I used 7-Zip to create an AES-256 encrypted *.zip (PKZip) file and then open it in Windows 10 File Explorer.

    I'm using Windows 10 1709 (OS build 16299.125) aka "Fall Creator's Update".

    File Explorer listed the files in the zip file correctly (this is expected as zip files do not encrypt filenames), but gave me an error when attempting to extract a file:

    So, no, Windows 10 (and presumably Windows 8.1, 8.0, 7, etc) does not support AES-256 encryption in zip files - however the "ZipCrypto" mode in 7-Zip does seem to be supported.
     
    Dai, Jun 4, 2024
    #2
  3. KEVIN
    Kevin Win User
    Do Windows 8.1 or 10 support AES-256 in zip files?

    I am aware that many versions of Windows do not have built-in explorer support for zip files (PKZip format) that use AES-256 encryption as opposed to the broken zip crypto. In particular I have tried it on Windows 7 and Server 2012 and it doesn't work on either.

    I don't have access to test newer Windows versions. Can users of Windows 8.1 and/or Windows 10 extract AES-256 encrypted files in zip archives using Windows Explorer or anything that comes with the OS? (I know they can do so by installing freely available programs, but don't want to require them to do so if it's not necessary.)
     
    Kevin, Jun 4, 2024
    #3
  4. LX07
    lx07 Win User

    How do I add aes-256 decryption support for zip files to Windows 10

    Unzipping password protected Zip files issue

    Some more testing : extraction using standard Windows only works if the zip is created using ZipCrypto encryption method.


    How do I add aes-256 decryption support for zip files to Windows 10 203316d1536583318t-unzipping-password-protected-zip-files-issue-capture1.png


    If you chose AES-256 then while 7-zip will open it, Windows built in extractor fails with this error :


    How do I add aes-256 decryption support for zip files to Windows 10 203317d1536583428t-unzipping-password-protected-zip-files-issue-capture2.png


    A bit of googling indicates WinRAR uses AES encryption so I'd suggest using 7-zip to compress/password protect your zip using the ZipCrypto encryption method.
     
    lx07, Jun 4, 2024
    #4
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How do I add aes-256 decryption support for zip files to Windows 10

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