Show the encryption method used on a Zip file in Linux?

Question

I’d like to see what encryption method was used on a Zip file on Linux. How can I do this?

See the following posts for reference:

• This question which shows the need to verify the encryption: 7-zip files on Linux with AES-256 encryption
• This question for the Windows equivalent: Show the encryption method used on a zip file in WinZip 9.0

Answer 1

Using 7za (available in package "p7zip") with the l (list) function and the -slt (technical mode for list) switch:

7za l -slt my_archive.zip