Enum Rng 

pub enum Rng {
    Os,
    Seeded(SeededRng),
}

A random number generator that can be either OS-backed or seeded/deterministic.

Variants

Os

Uses OS entropy via getrandom (non-deterministic).

Seeded(SeededRng)

Uses a seeded PRNG for deterministic output (e.g. testing).

Implementations

impl Rng

pub fn seeded(seed: u64) -> Self

Create a deterministic RNG from the given seed.

pub fn bytes_16(&self) -> [u8; 16]

Generate 16 random bytes (suitable for UUID v4).

pub fn bytes_32(&self) -> [u8; 32]

Generate 32 random bytes (suitable for token generation).

pub fn bytes_10(&self) -> [u8; 10]

Generate 10 random bytes (suitable for UUID v7 random portion).

Trait Implementations

impl Clone for Rng

fn clone(&self) -> Rng

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for Rng

fn default() -> Self

Returns the “default value” for a type.