Struct crypto::fortuna::Fortuna

pub struct Fortuna { /* fields omitted */ }

The Fortuna CSPRNG (PC 9.5)

Methods

impl Fortuna

pub fn new_unseeded() -> Fortuna

Creates a new unseeded Fortuna (PC 9.5.4)

pub fn add_random_event(&mut self, s: u8, i: usize, e: &[u8])

Adds a random event e from source s to entropy pool i (PC 9.5.6)

Trait Implementations

impl Rng for Fortuna

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

Generate a bunch of random data into dest (PC 9.5.5)

Failure modes

If the RNG has not been seeded, and there is less than MIN_POOL_SIZE bytes of data in the first accumulator pool, this function will fail the task.

fn next_u32(&mut self) -> u32

Return the next random u32.

fn next_u64(&mut self) -> u64

Return the next random u64.

fn next_f32(&mut self) -> f32

Return the next random f32 selected from the half-open interval [0, 1).

fn next_f64(&mut self) -> f64

Return the next random f64 selected from the half-open interval [0, 1).

fn gen<T>(&mut self) -> T where
    T: Rand, 

Return a random value of a Rand type.

fn gen_iter<T>(&'a mut self) -> Generator<'a, T, Self> where
    T: Rand, 

Return an iterator that will yield an infinite number of randomly generated items.

fn gen_range<T>(&mut self, low: T, high: T) -> T where
    T: SampleRange + PartialOrd<T>, 

Generate a random value in the range [low, high).

fn gen_weighted_bool(&mut self, n: u32) -> bool

Return a bool with a 1 in n chance of true

fn gen_ascii_chars(&'a mut self) -> AsciiGenerator<'a, Self>

Return an iterator of random characters from the set A-Z,a-z,0-9.

fn choose<T>(&mut self, values: &'a [T]) -> Option<&'a T>

Return a random element from values.

fn choose_mut<T>(&mut self, values: &'a mut [T]) -> Option<&'a mut T>

Return a mutable pointer to a random element from values.

fn shuffle<T>(&mut self, values: &mut [T])

Shuffle a mutable slice in place.

impl<'a> SeedableRng<&'a [u8]> for Fortuna

fn from_seed(seed: &'a [u8]) -> Fortuna

Create a new RNG with the given seed.

fn reseed(&mut self, seed: &'a [u8])

Reseed an RNG with the given seed.