Randomness generation refers to the process of creating sequences of numbers or symbols that lack any predictable pattern. This can be achieved through various methods, including algorithms or physical processes. Randomness is essential in fields like cryptography, where secure communication relies on unpredictable keys, and in simulations, where random inputs can help model complex systems. There are two main types of randomness: pseudo-randomness and true randomness. Pseudo-randomness is generated by algorithms that produce sequences that appear random but are actually deterministic. In contrast, true randomness is derived from unpredictable physical phenomena, such as radioactive decay or thermal noise, making it more suitable for applications requiring high security.