Struct SipRand 

pub struct SipRand {
    key: SipState,
    counter: u64,
}

HashX-style random number generator built on SipHash1,3

This is an implementation of Rng using SipHash1,3 as the 64-bit PRNG layer needed by HashX’s program generator.

Fields

key: SipState

SipHash state vector used as input to SipHash1,3 in counter mode

counter: u64

Next unused counter value

Implementations

impl SipRand

pub fn new(key: SipState) -> Self

Build a new SipHash random number generator.

The internal SipHash1,3 generator is initialized to a supplied internal state, and the counter is reset to zero.

pub fn new_with_counter(key: SipState, counter: u64) -> Self

Build a new SipRand with a specific initial counter value.

Trait Implementations

impl Clone for SipRand

fn clone(&self) -> SipRand

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SipRand

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

Formats the value using the given formatter.

impl TryRng for SipRand

fn try_next_u64(&mut self) -> Result<u64, Infallible>

Generate a full 64-bit random result using SipHash1,3.

fn try_next_u32(&mut self) -> Result<u32, Infallible>

Return a 32-bit value by discarding the upper half of a 64-bit result.

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

Fill dest with random data.

type Error = Infallible

The type returned in the event of a RNG error.