There are a number of mathematical algorithms for generating Checksum for a file in Linux. It is basically a string that uniquely represents the file thus if a file is ‘ tampered‘ with or ‘ modified‘, its checksum value will change and the user will know that the file has been changed. What is a SHA256 Checksum?Ī Checksum is a cryptographic signature of a file. In this article, we will learn about checksums and how they can be used to authenticate a downloaded file from the Internet. As thousands and thousands of people download these files regularly, it becomes especially important to protect such files. There has been constant research and development to improve the security of applications and files on the Internet and thus to prevent malicious use.ĭownloadable files over the Internet are often the target of attacks on the Internet. Internet security is one of the most important aspects when it comes to the world wide web.
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