Struct SpeculativeExecutionSource 

pub struct SpeculativeExecutionSource;

Measures timing variations from the CPU’s speculative execution engine. The branch predictor maintains per-address history that depends on ALL previously executed code. Mispredictions cause pipeline flushes (~15 cycle penalty on M4). By running data-dependent branches and measuring timing, we capture the predictor’s internal state which is influenced by all prior program activity on the core.

Trait Implementations

impl EntropySource for SpeculativeExecutionSource

fn info(&self) -> &SourceInfo

Source metadata.

fn is_available(&self) -> bool

Check if this source can operate on the current machine.

fn collect(&self, n_samples: usize) -> Vec<u8>

Collect raw entropy samples. Returns a Vec<u8> of up to n_samples bytes.

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

Convenience: name from info.

fn set_config(&self, _key: &str, _value: &str) -> Result<(), String>

Optional runtime configuration. Returns Err if unsupported.

fn config_options(&self) -> Vec<(&'static str, String)>

List configurable keys and their current values.