Struct HardwareEntropySource 

pub struct HardwareEntropySource { /* private fields */ }

Hardware random number generator entropy source

On x86 / x86_64 with the std feature, this uses RDRAND when the CPU advertises support and a probe read succeeds. Without std, runtime CPUID-based detection is unavailable and this source reports as unavailable.

AArch64 and PowerPC do not use in-process RNDR / DARN in this crate on stable Rust; use OsEntropySource for those targets.

Implementations

impl HardwareEntropySource

pub fn new() -> Self

Create a new hardware entropy source

Trait Implementations

impl Clone for HardwareEntropySource

fn clone(&self) -> HardwareEntropySource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HardwareEntropySource

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

Formats the value using the given formatter.

impl Default for HardwareEntropySource

fn default() -> Self

Returns the “default value” for a type.

impl EntropySource for HardwareEntropySource

fn get_entropy(&mut self, dest: &mut [u8]) -> Result<()>

Get entropy from the source

fn initialize(&mut self, config: &EntropyConfig) -> Result<()>

Initialize the entropy source

fn is_available(&self) -> bool

Check if the entropy source is available

fn quality(&self) -> f64

Get the entropy source’s quality estimate (0.0 to 1.0)

fn name(&self) -> &'static str

Get the entropy source’s name

fn source_type(&self) -> EntropySourceType

Get the entropy source’s type

fn max_entropy_per_call(&self) -> Option<usize>

Get the maximum entropy that can be obtained in one call

fn requires_initialization(&self) -> bool

Check if the entropy source requires initialization