It fully supports all functions, including file encryption. If you are thinking how to open 7z format, then the best option for you is to use the native 7Zip archiver. WinRAR has a built-in conversion utility that can convert a 7z compressed archive of files (and other compression formats) to RAR archives. On GUI, the easiest way to convert a 7z archive is to unpack it using the 7-zip program or open the contents with any other archiver of your choice. Compression and encryption of archive headers.We can list down the offered features of 7Z in brief : But the unRAR code is under the GNU LGPL with unRAR restriction which does not permit the developers to use the code to reverse-engineer the RAR compression algorithm. Big part of the 7-Zip source code is under the GNU LGPL license. In addition, the 7-ZIP encrypted password undergoes many different mathematical transformations, which makes its archives even more secure than with the simple use of AES-256.ħ-ZIP program can be used from a command line interface with the command p7zip or through a graphical user interface with shell integration. This provides a double protection, which is almost impossible to crack. High-strength encryption using the AES-256 algorithm uses the key generated by the SHA-256 function (just for quick recall, we used SHA-256 for SSL/TLSS certificate tutorial), which is generated based on the password entered by the user. Also, with the open architecture, it is possible to use any other algorithm that was not originally included in 7Z. As a result of this adjustment, the compression ratio can be significantly higher than that of universal algorithms. The 7z file format specification is distributed with 7-Zip’s source code in plain text format.įirst of all, 7Z file extension provides a choice of compression algorithm depending on the file type. However, we must be very careful and not to forget the password, since hacking 7Z is very difficult and almost impossible. Thus, no one else can access the files, except for you. Also, we can set a password for the archive. Also, thanks to the applied technology, the archiving process allows to reduce the number of files packed in a single package for transferring them to media with less memory being occupied. The main advantage of 7-Z archiver is associated with its convenience: a group of files can be packed into one package, especially when needed to forward a group of files by e-mail. These files are created using a compression method called LZMA, which is an algorithm for lossless data compression. 7-Zip is a free and open-source file archiver with own 7z archive format with it’s source code under the GNU LGPL license. May be many computer users thought for a while what is a 7Z File but never got the time to read a brief about it, some command line users are not aware. In this article, we will learn how to open 7z file and many things more. 7Z has similarity of features with tar, rather has more features compared to tar. We have guide on tar for the command line users. Tape Archive (tar) is one of the oldest and supports POSIX attributes but lacks built-in compression. Considering the fact that 7-Z archiver works no worse than WinRar, it has now replaced WinRar program. WinRar archiving program works flawlessly, but has one drawback – it is actually paid. These formats have become the standard of archiving, providing a good level of compression and user-friendly interface. Even if the term ‘file archiving’ is not be familiar to some, the file types “TAR”, “ZIP” and “RAR” are definitely known by every computer user. Possibly many of the computer user know the process of archiving files is and how to reduce the size of a file.
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