What Are Checksums & Why Should You Be Using Them?

A checksum is a small-sized block of data that is used to identify faults in files introduced during transmission or storage. Checksums are frequently used to verify data integrity but are not used to validate data validity. In simple terms, it is just a sequence of numbers and letters used to check data for errors.

Now you may be wondering: what is the point of a checksum? Well, it is the fact that they are used to detect download errors prior to transmission or in-transit which can help detect whether a file has been tampered with. In this article, we will explore checksums, different checksum algorithms, and why you should implement the use of them when downloading files.

Brief Overview: What Are Checksums?

As stated, checksums is a small-sized block of data that is used to identify faults in files introduced during transmission or storage. They are essentially digital fingerprints that are created from a series of bytes. The contents of a file are the most typical example of this series of bytes. Checksums are normally generated for whole files and can also be generated at a more detailed level, such as for individual frames in a movie or data recorded in a database. A checksum is always unique meaning that any alteration to the checksum, no matter how minor, will cause the checksum value to change completely. A checksum value is the result of performing a cryptographic hash function algorithm to generate it. In the next

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