# Struct crypto::fortuna::Fortuna [−] [src]

    pub struct Fortuna { /* fields omitted */ }

The `Fortuna` CSPRNG (PC 9.5)

## Methods

### `impl Fortuna`
[src]

#### `fn new_unseeded() -> Fortuna`

Creates a new unseeded `Fortuna` (PC 9.5.4)

#### `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`
[src]

#### `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. Read more

#### `fn next_u64(&mut self) -> u64`

Return the next random u64. Read more

#### `fn next_f32(&mut self) -> f32`

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

#### `fn next_f64(&mut self) -> f64`

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

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

Return a random value of a `Rand` type. Read more

#### `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. Read more

#### `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`). Read more

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

Return a bool with a 1 in n chance of true Read more

#### `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. Read more

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

Return a random element from `values`. Read more

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

Return a mutable pointer to a random element from `values`. Read more

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

Shuffle a mutable slice in place. Read more

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

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

Create a new RNG with the given seed. Read more

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

Reseed an RNG with the given seed. Read more

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