Software creators often take a file download-like a Linux. MD5, SHA-1, and SHA-256 are all different hash functions. Even if someone modifies a very small piece of the input data, the hash will change dramatically. You’ll see that, despite a very minor change in the input data, the resulting hashes are all very different from one another. Now compare the second example in the chart to the third, fourth, and fifth. Often these strings have a fixed length, regardless of the size of the input data. Take a look at the above chart and you’ll see that both “Fox” and “The red fox jumps over the blue dog” yield the same length output. Hashes are the products of cryptographic algorithms designed to produce a string of characters. How Hashes Work, and How They’re Used for Data Verification
You can do this with the commands built into Windows, macOS, and Linux. These seemingly random strings of text allow you to verify files you download aren’t corrupted or tampered with. You’ll sometimes see MD5, SHA-1, or SHA-256 hashes displayed alongside downloads during your internet travels, but not really known what they are.
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