Re: Protected ZIP file with password

Petrus Bastos wrote: > Hey folks, > > I got access to exec method for test! But, it's not working... :( > the function returns 127 and don't create the zip file, I've tested on > Linux command tool and works! Do you have any idea why didn't work? > > Thanks again and sorry for the inconvenience, > Petrus Bastos. > > On Feb 18, 2008 2:37 PM, Nick Stinemates <nick@stinemates.org > <mailto:nick@stinemates.org>> wrote: > > Petrus Bastos wrote: > > Richard, > > > > Unfortunately, I can't get out of the zip password rut > because the > > destination system read only this file format. I can't change the > > destination system. > > > > Thanks, > > Petrus. > > > > On Feb 18, 2008 2:11 PM, Richard Lynch <ceo@l-i-e.com > <mailto:ceo@l-i-e.com>> wrote: > > > > > >> On Mon, February 18, 2008 5:59 am, Petrus Bastos wrote: > >> > >>> Thanks again for your worry. So, let's go, here goes my > situation. > >>> I'm > >>> exporting data to another system. That system have an option to be > >>> feed by a > >>> password protected zip file. The export activity will be occur > in this > >>> way: > >>> the user will generate the file on my application and will put > this > >>> file > >>> into that another system. So, I need generate that file. Maybe one > >>> solution > >>> is to generate the file unzipped and determine that user > should zip > >>> the file > >>> with password on his Windows or Linux operating system. But, I > can't > >>> let > >>> that responsibility on user hands. So, because that I need to > generate > >>> the > >>> file already protected. > >>> > >> Perhaps you could use SCP (or SSH tunneling) to transfer the > file from > >> system to system, so that it need not ever be visible to the > outside > >> world, and thus not need the rather lame zip password. > >> > >> Another option would be to take the whole file and 2-way encrypt it > >> with a public/private key pair, and install the private key on the > >> receiving server. > >> > >> In other words, get out of the zip password rut, and protect > the file > >> some other way. > >> > >> -- > >> Some people have a "gift" link here. > >> Know what I want? > >> I want you to buy a CD from some indie artist. > >> http://cdbaby.com/from/lynch > >> Yeah, I get a buck. So? > >> > >> > >> > > > > > Sounds like a creative challenge... this is what makes programmers > problem solvers. You can write the code, you have the knowledge.. and > then you get requirements like this one. How annoying! > > I found out some interesting information researching your issue. It > seems that encryption by password is actually not built in to ZIP > itself, but was an implementation detail apps like WinZip added to the > mix. Because of that, the original ZIP libs don't have any notions of > password protection. > > It seems like this isn't a language specific issue, either. > > I think it's time to get creative, Petros. You're in a bind, and I > assume you need to get this done, so you have the following > options (in > the order I would do it in..) > -> Turn on exec() > -> You can use/modify an app I wrote (in python) which accepts UDP > packets and executed commands based off of it. You can strip out the > really insecure things and just accept 'zip' commands. The lib/app is > really small and lightweight. There are no dependencies outside of I > think 3 python modules. If I couldn't turn on exec(), this is the > route > I would go. > -> Use some form of file/directory montoring + zip. > -> Pass the request on to an environment that has zip() > > -- > ================== > Nick Stinemates (nick@stinemates.org > <mailto:nick@stinemates.org>) > http://nick.stinemates.org > > AIM: Nick Stinemates > MSN: nickstinemates@hotmail.com > <mailto:nickstinemates@hotmail.com> > Yahoo: nickstinemates@yahoo.com > <mailto:nickstinemates@yahoo.com> > ================== > > > What platform are you testing on? You got it to work under Linux but not on Windows? Am I understanding that properly? For windows, I read you should be using a tool called PkZIP. -- ================== Nick Stinemates (nick@stinemates.org) http://nick.stinemates.org AIM: Nick Stinemates MSN: nickstinemates@hotmail.com Yahoo: nickstinemates@yahoo.com ==================