Jacksum

Checking a file’s hash value is the most convenient way to make sure it has not been tampered with, either by malware or an ill-intentioned person.

Jacksum is one of the apps you can turn when you want to not only verify checksums but also generate them.

Since this utility is based on Java, it can be run on several platforms without any issue or difference in functionality, making it ideal for those who work on several computers with different OSes.

However, this is a command-line tool, which means that expert users will be able to benefit from its features. For example, rather than run the JAR file, as is usually the case with Java-based apps, you need to look for and access the BAT file.

It needs to be mentioned that you can get a very detailed presentation of all the supported algorithms by entering a dedicated command (-h en). Not only does it show the name and type, but also the length and a brief comment.

Considering the many types of algorithms Jacksum supports, you first need to select the file you are interested in. Next, you need to specify the full path to the file you want to generate the hash for and it will be instantly displayed. Alternatively, you can calculate the checksum for a user-defined string of text.

Before Jacksum calculates the checksums for your selected file, you can take some time and customize the output string. As such, assuming you are familiar with the commands, you can add separators, file size info and a timestamp, in addition to the actual checksum and the file’s name.

Jacksum can be the go-to solution for all those who prefer command-line tools when it comes to generating checksums. Nonetheless, you need to be familiar with the syntax to make the most of this app.