A Cryptographic Random Number Generator (CRNG) is a tool used to produce random numbers that are secure enough for cryptographic applications. Unlike regular random number generators, which may produce predictable sequences, CRNGs ensure that the numbers generated are truly random and cannot be easily guessed. This is crucial for tasks like creating secure passwords, encryption keys, and digital signatures. CRNGs rely on complex algorithms and often incorporate unpredictable sources of entropy, such as mouse movements or system events, to enhance randomness. By providing high-quality random numbers, CRNGs help protect sensitive information and maintain the integrity of cryptographic systems, making them essential in cybersecurity.