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Re: freeware to decrypt password-protected Winzip files
de Franklin 06/20/2006 11:36
On 20 Jun 2006, Dave Turner<3@2.1> wrote:
> the best one for ZIPs is probably Advanced ZIP Recovery made by
> that Russian guy who's name escapes me at the moment - he was
> arrested when he went to the US for developing the tool, causing a
> furore in the programming and related communities.
>
> However your question essentially boils down to "what freeware can
> I use to break AES?". All I can say is - good luck. ;)
>
Hi Dave, I think I may have explained my need badly.
Maybe it's my criminal-looking face that makes people think I want to
crack open password-protected zip files. Heh! This is what I
actually want to do:
(1) I create an ordinary zip file "archive" with Winzip ($$$ware).
(2) I password-protect the zip file. In other words, I encrypt it
using 'AES 256' built into Winzip. (AES 256 is stronger than AES 128
or Zip 2.0).
(3) I send the zip file to my recipient by email and I tell them the
password by phone. The recipient may vary and may be someone I have
not sent zip files to in the past.
(4) Sometimes the recipent CAN NOT OPEN MY ZIP FILE USING MY
PASSWORD. All my recipients will be using a WinXP PC provided by
their employer and the problem may be some limitation of the
unzipper.
(5) To get around this I would like my recipient to download a
freeware UNZIP utility in order to open my passworded/encrypted zip
file. Or I could send them a copy of the freeware with my zip file.
I keep hearing that there is a lot of extremely good zip freeware but
I know that not all of it can handle strong encryptionsuch as AES
256.
In my ideal world the zip freeware would work WITHOUT needing to be
installed because I'm sure not all my recipients will have WinXP
installation rights.