How to detect zip file encryption algorithm

Question

As we know zip files supports a simple password-based symmetric encryption system and some vendors use other algorithms. I used the zipinfo command in Linux but it doesn't say what encryption algorithm is used. How can I find that out?

score 9 · Accepted Answer · answered Jun 07 '16 at 05:55

9

7Zip archiver (freeware) has an info button that among other useful things tell you the encryption type an archive is using.

As a general note, .Zips usually use something called "ZipCrypto Deflatte".

answered Jun 07 '16 at 05:55

Overmind

8,779
3
19
28

8

thanks! I used: `7z l -slt file.zip` and got it :) – arman Jun 07 '16 at 10:20

score 0 · Answer 2 · answered Jul 14 '22 at 11:36

0

If you're on Windows in Total Commander you can press Ctrl+PageDown to enter the archive. Right click > Properties on any file will tell you the encryption type.

answered Jul 14 '22 at 11:36

icguy

101

This is a Linux question – schroeder Jul 14 '22 at 11:51
Please read the question more precisely and keep note of the tags used... – Sir Muffington Jul 14 '22 at 17:34
right, sorry about that – icguy Jul 29 '22 at 10:23

How to detect zip file encryption algorithm

2 Answers2