109

How do I create an encrypted (password protected) zip file?

127

This will prompt for a password:

zip --encrypt file.zip files

This is more insecure, as the password is entered/shown as plain text:

zip --password (password) file.zip files

Warning, the standard zip encryption is very weak and is easily cracked.

  • 2
    Is there a better option from the standard encryption? – David Oneill Dec 15 '10 at 20:47
  • 5
    Using gnupg on the final zip with a key for yourself or your destination. – Pete Ashdown Dec 15 '10 at 21:43
  • 1
    Does not work file.zip is empty – Black Aug 29 '17 at 12:15
  • 5
    @Black If you're trying to compress a folder, then you need to use -r switch. So it'll be zip --encrypt file.zip -r your_folder – H G Sur Jan 20 '18 at 11:55
27

You can also right-click on a folder or file(s) in Nautilus and select "Compress...". In the resulting window, you can expand the "Other Options" section to enter a password.

alt text

If the password field or any of the other options are not enabled, then the selected compression option does not support it. Select a different one from the list after the filename. According to the documentation:

Currently, only 7-Zip, ZIP, RAR and ARJ archives support encryption

  • 4
    It's worth noting that you need to install .rar before you can use it in the compressor. – Xeoncross Feb 20 '12 at 0:59
  • 9
    I don't see "Other Options" anymore in Ubuntu 17.10 (I remember seeing it in earlier version though) – Jonathan Dec 12 '17 at 22:04
11

Starting from Ubuntu 17.10, right-clicking and selecting "Compress" no longer has "Other Options" listed.

To resolve this, open "Archive Manager" and then drag & drop the files/folders from your File Manager into it and it will appear.

1
sudo apt-get install zip
zip -r --encrypt result.zip folder
  1. Install zip
  2. Use -r to zip directory and subdirectory
  3. Use --encrypt to secure your files

    with a simple password-based symmetric encryption system, which is documented in the ZIP specification

    Wikipedia

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