Struct DeterministicRng 

pub struct DeterministicRng { /* private fields */ }

Self-contained deterministic PRNG.

A 64-bit splitmix64 generator seeded from the vector’s seed field. Same seed, same call sequence, same bytes — no platform entropy. The stream is reproducible across machines, which is the whole point for NIST vectors.

Not cryptographically secure — this exists to make protocol transcripts reproducible, not to be the production RNG. Schemes under test plug this in via their nonce/ephemeral-value hooks.

Implementations

impl DeterministicRng

pub fn from_seed(seed: u64) -> Self

Seed a fresh generator. A zero seed is allowed and produces a well-defined stream (the first output is non-zero because splitmix64 mixes the state before returning).

pub fn next_u64(&mut self) -> u64

Next raw 64-bit output.

pub fn fill(&mut self, out: &mut [u8])

Fill out with deterministic bytes derived from the stream.

Trait Implementations

impl Clone for DeterministicRng

fn clone(&self) -> DeterministicRng

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DeterministicRng

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

Formats the value using the given formatter.