Struct urandom::rng::ChaCha20

pub struct ChaCha20 { /* private fields */ }

Daniel J. Bernstein’s ChaCha20 adapted as a deterministic random number generator.

Examples

let mut rng = urandom::rng::ChaCha20::new();
let value: i32 = rng.next();

Implementations

impl ChaCha20

pub fn new() -> Random<ChaCha20>

Creates a new instance seeded securely from system entropy.

See the SeedRng trait for more information.

pub fn from_rng<R: Rng + ?Sized>(rng: &mut Random<R>) -> Random<ChaCha20>

Creates a new PRNG seeded from another Rng.

See the SeedRng trait for more information.

pub fn from_seed(seed: u64) -> Random<ChaCha20>

Creates a new PRNG using the given seed.

See the SeedRng trait for more information.

Trait Implementations

impl Clone for ChaCha20

fn clone(&self) -> ChaCha20

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ChaCha20

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Rng for ChaCha20

fn next_u32(&mut self) -> u32

Returns the next u32 in the sequence.

fn next_u64(&mut self) -> u64

Returns the next u64 in the sequence.

fn fill_u32(&mut self, buffer: &mut [u32])

Fills the next u32 elements in the sequence.

fn fill_u64(&mut self, buffer: &mut [u64])

Fills the next u64 elements in the sequence.

fn fill_bytes(&mut self, buffer: &mut [u8])

Fills the byte slice with uniform random bytes.

fn jump(&mut self)

Advances the internal state significantly.

fn next_f32(&mut self) -> f32

Returns a uniform random f32 in the half-open interval [1.0, 2.0).

fn next_f64(&mut self) -> f64

Returns a uniform random f64 in the half-open interval [1.0, 2.0).

impl SeedRng for ChaCha20

fn new() -> Random<ChaCha20>

Creates a new instance seeded securely from system entropy.

fn from_rng<R: Rng + ?Sized>(rng: &mut Random<R>) -> Random<ChaCha20>

Creates a new PRNG seeded from another Rng.

fn from_seed(seed: u64) -> Random<ChaCha20>

Creates a new PRNG using the given seed.