If we were to take the word " polo" - a string of 4 characters and run it through an MD5 hashing algorithm, we end up with an output of b53759f3ce692de7aff1b5779d3964da - a standard 32 character MD5 hash. There are many popular hashing algorithms, such as MD4, MD5, SHA1 and NTLM. This masks the original value of the data and is done by running the original data through a hashing algorithm. A hash is a way of taking a piece of data of any length and representing it in another form that is a fixed length.
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