Remove known password from zip files

Soldato
Joined
25 Nov 2004
Posts
3,754
Hi all

I have a requirement to remove a password set on a number of zip files (the password is known). Does anyone know if this is possible and more so, via cli?

Thanks!
 
Associate
Joined
31 Dec 2010
Posts
1,658
Location
Sussex
About the best you'd be able to do use a CLI tool (7zip is free) to extract and then add them to the same archive (in a different folder) without the password.
Once you set a password the whole archive uses that password for everything so it's not just some header you have to remove.
See, for instance, the answers here.
https://superuser.com/questions/550097/remove-known-password-from-zip-archive-without-extracting
Might be best off looking for Powershell examples as what you really want is a pipe which takes the output of one command and sends it to the next command (in a 'nix kind of way) and normal Windows CLI isn't that great at that I think whereas Powershell is good at those.
https://docs.microsoft.com/en-us/po....archive/compress-archive?view=powershell-7.1
https://docs.microsoft.com/en-us/po...ll.archive/expand-archive?view=powershell-7.1
 
Soldato
OP
Joined
25 Nov 2004
Posts
3,754
That is what I expected and told my boss but I wanted to make sure I wasn't talking from a place of ignorance. All this rigmarole to avoid telling a client to install 7zip lol.

Thanks for the help guys much appreciated :)
 
Top Bottom