Crate mina_poseidon

This crate provides a generic implementation of the Poseidon hash function. It provides a Sponge trait that can be implemented for any field.

Some parameters for the Pasta fields are provided in the sub-crate crate::pasta.

To instantiate an object that can be used to generate challenges for the Fiat-Shamir transformation, use the DefaultFqSponge struct. For instance, to instantiate with the parameters used by the Mina hard-fork called Berkeley, use:

use mina_curves::pasta::{VestaParameters};
use mina_poseidon::sponge::DefaultFqSponge;
use mina_poseidon::FqSponge;
use mina_poseidon::constants::PlonkSpongeConstantsKimchi;
use mina_poseidon::pasta::fq_kimchi;

let mut sponge = DefaultFqSponge::<VestaParameters, PlonkSpongeConstantsKimchi>::new(
  fq_kimchi::static_params(),
);
let challenge = sponge.challenge();

Re-exports

• pub use sponge::FqSponge;

Modules

• constants
• dummy_values
• pasta
• permutation
  The permutation module contains the function implementing the permutation used in Poseidon.
• poseidon
  This module implements Poseidon Hash Function primitive
• sponge