The most noticeable of these enhancements is the ability to easily encrypt the files that are already in a Zip file previously, files could be encrypted only while they were being added to the Zip file.
In addition to the new AES encryption technology, WinZip 9.0 provides a number of usability enhancements that make it easier for you to use encryption. WinZip's AES encryption is just as easy to use as traditional Zip 2.0 encryption: all you have to do is select the encryption strength and specify your password. When properly implemented as a key component of an overall security protocol, the AES permits a very high degree of cryptographic security, yet is fast and efficient in operation. government, private businesses, and individuals.
WinZip 9.0's advanced encryption (FIPS-197 certified) uses the Rijndael cryptographic algorithm which, in 2001, was specified by the National Institute of Standards and Technology (NIST) in Federal Information Processing Standards (FIPS) Publication 197 as the Advanced Encryption Standard (AES).Īfter a three-year competition, the AES was announced by NIST as an approved encryption technique for use by the U.S. In addition, i would realize this only with the Rebex-Librarys, because the Zip-Arichives send via Mail.WinZip 9.0 supports 128- and 256-bit key AES encryption, which provide much greater cryptographic security than the traditional Zip 2.0 encryption method used in earlier versions of WinZip. But this Library have no equal PasswordRequired-Event. I have another Library (DevExpress) here, that can handle those Archives. Is there any way to force the extraction of the files (for example overwriting the ZipItem.ItemType-Property or additional Options )? Tried several Events of the ZipArchive-Class I have nothing found in the options under ZipArchive.Options, especially. ZipItem.ExtractToDirectory("C:\", Rebex.IO.TraversalMode.NonRecursive, Rebex.IO.ActionOnExistingFiles.OverwriteAll)Įxtracting the whole Archive with ZipArchive.ExtractAll("C:\test", Rebex.IO.TransferMethod.Copy, Rebex.IO.ActionOnExistingFiles.OverwriteAll) ZipItem.ExtractToFile("C:\test\" & ZipItem.Name, Rebex.IO.ActionOnExistingFiles.OverwriteAll) Is it possible in any way to extract the files? Follwing i have tried: It seems that 7-zip does not store the File-Attribute in the Archive to the file ( ZipItem.IsFile or ZipItem.ItemType = ArchiveItemType.File).Įxtracting of the files with any Zip-Programs (WinRAR, WinZip, 7-zip) is possible without problems. The archive was created with 7-zip 9.20 64-Bit on Ubuntu 16.04 TLS. I have here a ZIP-Archive from a external team, that i must extract automatically to using in another program.
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