Struct Poseidon2 

pub struct Poseidon2<P: PoseidonParams<F>, F: PrimeField> { /* private fields */ }

Poseidon2 sponge that can absorb any number of F field elements and be squeezed to a finite number of F field elements.

Security Notice

This is a low-level primitive that does not implement padding or domain separation. Users must ensure proper input formatting and security practices for their specific cryptographic protocols.

Implementations

impl<P: PoseidonParams<F>, F: PrimeField> Poseidon2<P, F>

pub fn new() -> Self

Create a new Poseidon sponge.

pub const fn state_size() -> usize

Size of poseidon sponge’s state.

pub fn absorb(&mut self, elem: &F)

Absorb a single element into the sponge.

Transitions from Mode::Absorbing to Mode::Squeezing mode are unidirectional.

Panics

May panic if absorbing while squeezing.

pub fn absorb_batch(&mut self, elems: &[F])

Absorb batch of elements into the sponge.

pub fn permute(&mut self)

Permute elements in the sponge.

pub fn squeeze(&mut self) -> F

Squeeze a single element from the sponge.

When invoked from Mode::Absorbing mode, this function triggers a permutation and transitions to Mode::Squeezing mode.

pub fn squeeze_batch(&mut self, n: usize) -> Vec<F>

Squeeze a batch of elements from the sponge.

Trait Implementations

impl<P: Clone + PoseidonParams<F>, F: Clone + PrimeField> Clone for Poseidon2<P, F>

fn clone(&self) -> Poseidon2<P, F>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<P: Debug + PoseidonParams<F>, F: Debug + PrimeField> Debug for Poseidon2<P, F>

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

Formats the value using the given formatter.

impl<P: PoseidonParams<F>, F: PrimeField> Default for Poseidon2<P, F>

fn default() -> Self

Returns the “default value” for a type.