cryptorandomUUID

cryptorandomUUID is a function or method available in various programming languages and libraries that generates a Universally Unique Identifier (UUID) using a cryptographically secure pseudorandom number generator (CSPRNG). UUIDs are 128-bit numbers used to uniquely identify information in computer systems. Version 4 UUIDs are typically generated randomly.

The "crypto" prefix indicates that the randomness source is designed to be unpredictable and suitable for security-sensitive applications, such as generating session IDs, unique keys, or cryptographic nonces. Unlike standard pseudorandom number generators, CSPRNGs are designed to resist prediction even if an attacker has some knowledge of the generator's internal state. This makes cryptorandomUUID a preferred choice when uniqueness is critical and the identifier might be exposed to potential adversarial analysis.

The output of cryptorandomUUID conforms to the standard UUID format, usually represented as a 32-character hexadecimal string separated by hyphens, for example, `a1b2c3d4-e5f6-7890-1234-567890abcdef`. Different programming environments might offer this functionality through built-in modules or external libraries.