Struct rand::os::OsRng [−] [src]

pub struct OsRng(_);

A random number generator that retrieves randomness straight from the operating system. Platform sources:

Unix-like systems (Linux, Android, Mac OSX): read directly from /dev/urandom, or from getrandom(2) system call if available.
Windows: calls CryptGenRandom, using the default cryptographic service provider with the PROV_RSA_FULL type.
iOS: calls SecRandomCopyBytes as /dev/(u)random is sandboxed.
PNaCl: calls into the nacl-irt-random-0.1 IRT interface.

This does not block.

Methods

`impl OsRng`

`fn new() -> Result<OsRng>`

Create a new OsRng.

Trait Implementations

`impl Rng for OsRng`

`fn next_u32(&mut self) -> u32`

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

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

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

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

`fn gen<T: Rand>(&mut self) -> T where Self: Sized`

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

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

`fn gen_weighted_bool(&mut self, n: u32) -> bool where Self: Sized`

`fn gen_ascii_chars<'a>(&'a mut self) -> AsciiGenerator<'a, Self> where Self: Sized`

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

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