In cryptography, entropy is randomness. The higher degree of randomness something has the more entropy it has. You'll often see entropy expressed in bits. Here

In cryptography, entropy is randomness. The higher degree of randomness something has the more entropy it has. You'll often see entropy expressed in bits. Here's an XKCD comic that uses entropy. It may give you more context: https://xkcd.com/936/ https://xkcd.com/936/