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

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3 Answers 3

up vote 22 down vote accepted

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.

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Is there a better option from the standard encryption? –  David Oneill Dec 15 '10 at 20:47
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Using gnupg on the final zip with a key for yourself or your destination. –  Pete Ashdown Dec 15 '10 at 21:43

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.

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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

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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

An alternative to the password protected zip volume if you're concerned with security may be:

  • a local/remove encfs partition, or;
  • a file/partition based Truecrypt volume (many options to obscure, hide and increase the security complexity several times with this).
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