What Is Hashing and How Does It Work?

The notion of a hash is one that you’ll come across repeatedly in any discussion regarding cybersecurity.

These seemingly random sequences of numbers and letters are created and employed in a variety of ways. Even though this is a very restricted and easily overcome method of detecting current viruses, hashes bring a lot of value and help to prove identification but are also used in a variety of ways. We’ll go through a few of them in this post as we learn more about what a hash is and how it works.

What Is a Hash?

Hashes are the result of a mathematical function that converts a text string (no matter the length) into an encrypted string of a fixed length. For every given piece of data input, algorithms such as MD5 (Message Digest 5) or SHA (Secure Hash Algorithm) fundamentally generate a unique, fixed-length string – the hash value.

How Do Hashes Work?

Hashing is basically a one-way cryptographic function. Because hashes are irreversible, knowing the output of a hashing method does not allow you to recreate the contents of a file. It does, however, allow you to assess whether two files are similar without knowing their contents.


Read More: https://heimdalsecurity.com/blog/what-is-hashing/