Shulou(Shulou.com)06/03 Report--

In this issue, the editor will bring you about the difference between the compressed format rar and zip. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

The difference between the compression format rar and zip:

Popularization rate and scope of application

The origin of zip is much earlier than that of rar, and its popularity is wider than that of the latter. For zip, the operating system directly supports extracting files, which is much better than rar. To take a simple example, if you want to compress a bunch of photos and send them to your friends, you will generally give priority to zip format compression. Because you don't know if the other party has a decompression tool like WinRAR installed. For the zip format, you don't have to worry about it at all.

Compression ratio and compression speed

Many people choose rar compression on the one hand because rar compression ratio will be higher than zip, small size and more convenient for network transmission. This is due to the unique solid compression method of rar, which can improve the file compression ratio to a greater extent.

And the high compression ratio naturally comes at a price. Rar compression or decompression is generally slower than zip. The fast compression and decompression speed is naturally the advantage of the zip method.

Differences in nature and function

As we all know, zip is open source software and rar is paid for. The reason why they have a big difference in compression ratio is also due to different algorithms. Rar is more powerful than zip. For example, the unique solid compression method of rar, or the ability to lock compressed files to prevent modification, or to restore records, to recover physically damaged data, and so on. This is not available on zip.

Security differences

Both zip and rar can be password protected, but rar is more secure. Because zip is widely used and the code is open source, it is common for compressed files to be violently cracked. For zip passwords, "plaintext attack" is even more deadly. If you know a section of the encrypted compressed zip file, you can deduce the zip password.

And rar is a "lesson from the past", its emergence is good to make up for the security problems of zip. It adopts the currently recognized AES symmetric encryption algorithm with high security factor, and the password length can reach 128bit characters. Even if you run a dictionary and crack it violently, you won't be able to solve it forever.

What is the difference between the compressed format rar and zip shared by Xiaobian? if you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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