Trait lambdaworks_crypto::hash::poseidon::parameters::PermutationParameters

pub trait PermutationParameters {
    type F: IsPrimeField + 'static;

    const RATE: usize;
    const CAPACITY: usize;
    const ALPHA: u32;
    const N_FULL_ROUNDS: usize;
    const N_PARTIAL_ROUNDS: usize;
    const MDS_MATRIX: &'static [FE<Self::F>];
    const N_MDS_MATRIX_ROWS: usize;
    const N_MDS_MATRIX_COLS: usize;
    const ROUND_CONSTANTS: &'static [FE<Self::F>];
    const N_ROUND_CONSTANTS_ROWS: usize;
    const N_ROUND_CONSTANTS_COLS: usize;
    const STATE_SIZE: usize = _;
}

Parameters for Poseidon MDS constants and rounds constants are stored as references to slices representing matrices of N_MDS_MATRIX_ROWS * N_MDS_MATRIX_COLS and N_ROUND_CONSTANTS_ROWS * N_ROUND_CONSTANTS_COLS respectively. We use this representation rather than an array because we can’t use the associated constants for dimension, requiring many generic parameters otherwise.

Required Associated Types

type F: IsPrimeField + 'static

Required Associated Constants

const RATE: usize

const CAPACITY: usize

const ALPHA: u32

const N_FULL_ROUNDS: usize

const N_PARTIAL_ROUNDS: usize

const MDS_MATRIX: &'static [FE<Self::F>]

const N_MDS_MATRIX_ROWS: usize

const N_MDS_MATRIX_COLS: usize

const ROUND_CONSTANTS: &'static [FE<Self::F>]

const N_ROUND_CONSTANTS_ROWS: usize

const N_ROUND_CONSTANTS_COLS: usize

Provided Associated Constants

const STATE_SIZE: usize = _

Object Safety

This trait is not object safe.

Implementors

impl PermutationParameters for PoseidonCairoStark252

type F = MontgomeryBackendPrimeField<MontgomeryConfigStark252PrimeField, 4>

const RATE: usize = 2usize

const CAPACITY: usize = 1usize

const ALPHA: u32 = 3u32

const N_FULL_ROUNDS: usize = 8usize

const N_PARTIAL_ROUNDS: usize = 83usize

const MDS_MATRIX: &'static [FE<Stark252PrimeField>] = _

const N_MDS_MATRIX_ROWS: usize = 3usize

const N_MDS_MATRIX_COLS: usize = 3usize

const ROUND_CONSTANTS: &'static [FE<Stark252PrimeField>] = _

const N_ROUND_CONSTANTS_ROWS: usize = 91usize

const N_ROUND_CONSTANTS_COLS: usize = 3usize