Pkware zip zip#

zip extension.ДЇor instance, if you select PGP encryption in PentaZip, your file will have the double extension. 'Д«oth Aladdin and PentaWare, which makes PentaZip, get around the encryption-versus-compatibility dilemma by offering a high-quality encryption option that doesn't use the. Obviously if PKWare withholds information we can't support. His company's strategy? 'Our goal is to fully support both versions. 'What we found when we investigated was that PKWare had not fully revealed all of their extensions,' says Mathew Covington, product manager for Aladdin Systems' compression program Stuff-It. But like WinZip, some companies have become suspicious of PKWare's intent. zip-compatible programs, and the other players must find a middle ground.

Other companies besides the two leaders publish. He couldn't say whether PKZip will add WinZip's extensions, 'given the fact that it is still a beta product.' And later? 'We'll cross that bridge when we get there,' Crawford says. WinZip, by contrast, released its new specification May 12, when its beta test for the encryption-enabled version 9 went public.Д«ut the spec should not come out until a product is done, says Steve Crawford, PKWare's chief marketing officer. 'They try to keep it to themselves, and if the pressure gets hot they can dribble out stuff.We think there's a legitimate claim that they're going against their stated claim to keep an open standard,' Kearney says. WinZip's Kearney is skeptical of that reasoning. 'We're not publishing it because we still have a number of features to add.' 'Certificate-based encryption is still a work in progress,' says Jim Peterson, PKZip chief technology officer. Although the feature was introduced in PKZip 5.0 for Windows nearly a year ago, it has not yet appeared in PKZip for other platforms-specifically mainframes-and PKWare doesn't consider it complete. 'Then PKWare themselves did something that wasn't in the specs.' WinZip eventually decided to go it alone.Д®ven PKWare's new specs aren't complete, lacking important information on certificate-based encryption. 'We went a very long time trying to never be incompatible,' says Kevin Kearney, WinZip technical consultant. Until PKWare's recent release, the company hadn't updated its posted specification since 2001 the encryption details simply weren't available. Since PKZip's encryption hit the market first, why didn't WinZip make its product compatible? Because PKWare didn't tell WinZip how. Although both programs use AES, the encrypted archives aren't compatible. The recently released beta version of WinZip 9 boasts 256-bit AES encryption as well (without certificates). PKWare responded to these needs, slowly rolling out options such as certificate-based security and 256-bit AES encryption.

Pkware zip password#

zip 2.04g specification's password protection couldn't stop a reasonably knowledgeable hacker.

For one thing, it desperately needed adequate encryption. zip format couldn't stay the same forever.