Re: building compatible zip files "by hand" that are encrypted and compressed
Greg Roelofs <[email protected]> Fri, 19 Sep 2003 08:29:18 -0700
| Newsgroups | gmane.comp.archivers.info-zip |
|---|---|
| Message-ID | <[email protected]> |
Ed Fair <ed_fair-/[email protected]> wrote: > I must ensure, during client preprocessing, that files > are compressed and encrypted in a manner compatible > with the common UNZIP utilities. That rules out AES. Only the newest WinZip or PKZIP supports it-- the two are not compatible with each other, and I think the other one uses a different strong-crypto algorithm. Info-ZIP supports only the old-style 96-bit, known-plaintext-susceptible variant that everybody supports. So either use that or forget about portability. Greg