rustmax::cxx_build::std::random

Struct DefaultRandomSource

Source 
pub struct DefaultRandomSource;
🔬This is a nightly-only experimental API. (random)
Expand description

The default random source.

This asks the system for random data suitable for cryptographic purposes such as key generation. If security is a concern, consult the platform documentation below for the specific guarantees your target provides.

The high quality of randomness provided by this source means it can be quite slow on some targets. If you need a large quantity of random numbers and security is not a concern, consider using an alternative random number generator (potentially seeded from this one).

§Underlying sources

PlatformSource
Linuxgetrandom or /dev/urandom after polling /dev/random
WindowsProcessPrng
AppleCCRandomGenerateBytes
DragonFlyarc4random_buf
ESP-IDFesp_fill_random
FreeBSDarc4random_buf
Fuchsiacprng_draw
Haikuarc4random_buf
Illumosarc4random_buf
NetBSDarc4random_buf
OpenBSDarc4random_buf
Solarisarc4random_buf
Vitaarc4random_buf
Hermitread_entropy
Horizongetrandom shim
AIX, Hurd, L4Re, QNX/dev/urandom
Redox/scheme/rand
RTEMSarc4random_buf
SGXrdrand
SOLIDSOLID_RNG_SampleRandomBytes
TEEOSTEE_GenerateRandom
UEFIEFI_RNG_PROTOCOL
VxWorksrandABytes after waiting for randSecure to become ready
WASIrandom_get
ZKVMsys_rand

Note that the sources used might change over time.

Consult the documentation for the underlying operations on your supported targets to determine whether they provide any particular desired properties, such as support for reseeding on VM fork operations.

Trait Implementations§

Source§

impl Clone for DefaultRandomSource

Source§

fn clone(&self) -> DefaultRandomSource

Returns a copy of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
Source§

impl Debug for DefaultRandomSource

Source§

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

Formats the value using the given formatter. Read more
Source§

impl Default for DefaultRandomSource

Source§

fn default() -> DefaultRandomSource

Returns the “default value” for a type. Read more
Source§

impl RandomSource for DefaultRandomSource

Source§

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

🔬This is a nightly-only experimental API. (random)
Fills bytes with random bytes.
Source§

impl Copy for DefaultRandomSource

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> CloneToUninit for T
where T: Clone,

Source§

unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T> FromRef<T> for T
where T: Clone,

Source§

fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.
Source§

impl<T> Instrument for T

Source§

fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Source§

fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> IntoEither for T

Source§

fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

impl<T> Pointable for T

Source§

const ALIGN: usize = _

The alignment of pointer.
Source§

type Init = T

The type for initializers.
Source§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
Source§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
Source§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
Source§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
Source§

impl<T> QuickClone<T> for T
where T: Clone,

Source§

fn C(&self) -> T

Source§

impl<T> QuickToOwned for T
where T: ToOwned,

Source§

type Owned = <T as ToOwned>::Owned

Source§

fn O(&self) -> <T as QuickToOwned>::Owned

Source§

impl<T> Same for T

Source§

type Output = T

Should always be Self
Source§

impl<T> ToOwned for T
where T: Clone,

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

Source§

fn vzip(self) -> V

Source§

impl<T> WithSubscriber for T

Source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

impl<T> ErasedDestructor for T
where T: 'static,

Source§

impl<T> MaybeSendSync for T