Version: 2.14 (using KDE 4.4.4)
7zip offers two ways to encrypt files: encrypt file contents only, or encrypt the header, making it impossible to see the list of files without the password.
Ark supports the first type properly, by prompting for a password when the user tries to extract a file.
However it fails with the second type, trying for a while (~1 min) to read the archive, then failing with a "Reading the archive xxx. failed with the error 'Incorrect password'.
Steps to Reproduce:
1. Create archive with 7zip: 7z -ptoto -mhe=on a somefile.txt
2. Try to open it with ark.
It would be nice to have ark fully support these files, however, it should at least fail immediately with a "Ark doesn't support encrypted-header 7z files at the moment" type of error message.
*** This bug has been marked as a duplicate of bug 35371 ***
Note that 7z and zip are entirely different formats, which is why I created a new bug for this.
I'm actually concentrating all the password-related bugs there -- many of the other duplicates are related to Ark failing with RAR files as well.