Take advantage of md5 checksums for download validity
I'm fairly confident that you have, at one time or another, run across an md5checksum file as you have perused the internet. Whether it was a download file or even an application upgrade, those md5 files are there for a reason. But just what is the reason?
When someone puts a file up on a server for download, how does the host or the end-user know, for sure, the file they are about to download (or are serving up) is the valid file? What if someone hacked into the server and replaced the file with a bogus file that contained malicious code? It's happened before and it will happen again. Fortunately there is a way to avoid downloading invalid files – checking the md5 hash. The only problem is that this method only works if the host and user knows how to use md5 tools. In this tutorial you will learn how to add an md5 checksum to a file and how to run a check on a file you have downloaded.
I'm fairly confident that you have, at one time or another, run across an md5checksum file as you have perused the internet. Whether it was a download file or even an application upgrade, those md5 files are there for a reason. But just what is the reason?
When someone puts a file up on a server for download, how does the host or the end-user know, for sure, the file they are about to download (or are serving up) is the valid file? What if someone hacked into the server and replaced the file with a bogus file that contained malicious code? It's happened before and it will happen again. Fortunately there is a way to avoid downloading invalid files – checking the md5 hash. The only problem is that this method only works if the host and user knows how to use md5 tools. In this tutorial you will learn how to add an md5 checksum to a file and how to run a check on a file you have downloaded.
