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 fromgetrandom(2)
system call if available. - Windows: calls
CryptGenRandom
, using the default cryptographic service provider with thePROV_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
[src]
Trait Implementations
impl Rng for OsRng
[src]
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 fill_bytes(&mut self, v: &mut [u8])
Fill dest
with random data. 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: Rand>(&mut self) -> T where Self: Sized
Return a random value of a Rand
type. Read more
fn gen_iter<'a, T: Rand>(&'a mut self) -> Generator<'a, T, Self> where Self: Sized
Return an iterator that will yield an infinite number of randomly generated items. Read more
fn gen_range<T: PartialOrd + SampleRange>(&mut self, low: T, high: T) -> T where Self: Sized
Generate a random value in the range [low
, high
). Read more
fn gen_weighted_bool(&mut self, n: u32) -> bool where Self: Sized
Return a bool with a 1 in n chance of true Read more
fn gen_ascii_chars<'a>(&'a mut self) -> AsciiGenerator<'a, Self> where Self: Sized
Return an iterator of random characters from the set A-Z,a-z,0-9. Read more
fn choose<'a, T>(&mut self, values: &'a [T]) -> Option<&'a T> where Self: Sized
Return a random element from values
. Read more
fn shuffle<T>(&mut self, values: &mut [T]) where Self: Sized
Shuffle a mutable slice in place. Read more