Older Version Of Winzip For Mac

WinZip 8.0 is a Windows utility that's incompatible with Mac OS X or older versions of the Mac operating system including OS 9, 8 and 7. Attempting to install WinZip 8.0 on a Mac system results in your computer not recognizing the file or its installation wizard.

The main new features of WinZip 9.0 are: • Advanced encryption 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. 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). After a three-year competition, the AES was announced by NIST as an approved encryption technique for use by the U.S. Government, private businesses, and individuals. 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.

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. Microsoft internet explorer mac download. 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.

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. Note: Recipients to whom you send AES-encrypted Zip files must have a compatible Zip file utility in order to decrypt the files. We have published the full specification for creating WinZip-compatible AES-encrypted Zip files, and we expect that other Zip file utility vendors will provide support for the format. • Greater capacity In addition to supporting the original Zip file format, WinZip 9.0 also supports the 64-bit extensions to the Zip file format. The extended format lets you store all the data you need in Zip files of virtually unlimited size. The original Zip file format limited the number of member files in a Zip file to 65,535, and the maximum size of both the Zip file itself and any member file to 4 gigabytes. For all practical purposes, the 64-bit extended format eliminates all these restrictions.

Using the extended format, the member file size, Zip file size, and number of member files you can add to a Zip file are limited only by your system's resources. WinZip remains fully compatible with the original file format and uses the original format whenever possible. WinZip uses the 64-bit extended format only when the limits of the original format are exceeded. Note: Zip files that are created using the 64-bit Zip file extensions require a Zip utility, such as WinZip 9.0, that supports this format in order to open these Zip files. • Improved compression WinZip 9.0 now both zips and unzips files with the 'enhanced deflate' compression method. This compression method provides greater compression for many types of files and reduces the size of your Zip files, saving you data transmission time and valuable disk space.