What is entropy in cryptography?

In the context of cryptography, entropy is used to generate random numbers or keys that are essential for secure communication and encryption. Without a good source of entropy, cryptographic protocols can become vulnerable to attacks that exploit the predictability of the generated keys. What is Entropy?

What is entropy in Computer Science?

In computing, entropy is the randomness collected by an operating system or application for use in cryptography or other uses that require random data. This randomness is often collected from hardware sources (variance in fan noise or HDD), either pre-existing ones such as mouse movements or specially provided randomness generators.

What is entropy used for?

In addition to traditional cryptographic schemes, entropy has been used in research on cutting edge cryptographic schemes and paradigms, such as quantum cryptography, homomorphic encryption, white-box cryptography, and attribute-based encryption. Some related research works are briefly reviewed in the following: