Struct AnemoiVesta_2_1

pub struct AnemoiVesta_2_1;

An Anemoi instantiation over Vesta basefield with 1 column and rate 1.

Trait Implementations

impl<'a> Anemoi<'a, Fp<MontBackend<FrConfig, 4>, 4>> for AnemoiVesta_2_1

const NUM_COLUMNS: usize = 1usize

Number of columns of this Anemoi instance.

const NUM_ROUNDS: usize = 21usize

Number of rounds of this Anemoi instance.

const WIDTH: usize = 2usize

Width of this Anemoi instance. Should always be equal to twice the number of columns.

const RATE: usize = 1usize

The rate of this Anemoi instance when used in Sponge mode.

const OUTPUT_SIZE: usize = 1usize

The output size of this Anemoi instance, in both Sponge or Jive mode.

const ARK_C: &'a [Felt]

The first set of additive round constants (C) used for this Anemoi instance.

const ARK_D: &'a [Felt]

The first set of additive round constants (D) used for this Anemoi instance.

const GROUP_GENERATOR: u32 = 5u32

The group generator of the underlying field of this Anemoi instance. It is defined to possibly speed up the MDS layer for small instances.

const ALPHA: u32 = 5u32

The alpha exponent used for this Anemoi instance’s S-Box layer.

const INV_ALPHA: Felt = sbox::INV_ALPHA

The inv_alpha exponent used for this Anemoi instance’s S-Box layer.

const BETA: u32 = 5u32

The beta constant used for this Anemoi instance’s S-Box layer.

const DELTA: Felt = sbox::DELTA

The delta constant used for this Anemoi instance’s S-Box layer.

fn exp_by_inv_alpha(x: Felt) -> Felt

Helper method to exponentiate by this Anemoi instance’s INV_ALPHA parameter. It is left to implementors to provide efficient multiplication chains.

const MDS: Option<&'a [F]> = None

The MDS matrix used for this Anemoi instance’s linear layer. It is optional as short instances benefit from a custom low-cost matrix-vector product for the Anemoi linear layer.

const QUAD: u32 = 2u32

The quadratic factor used for this Anemoi instance’s S-Box layer. Binary fields are not supported here, hence it is always set to 2.

fn mul_by_generator(x: &F) -> F

Helper method to possibly speed-up the linear layer. It is also used by the S-Box layer as Self::BETA is defined as the generator.

fn exp_by_alpha(x: F) -> F

Helper method to exponentiate by this Anemoi instance’s ALPHA parameter.

fn ark_layer(state: &mut [F], round_ctr: usize)

Additive Round Constants (ARK) layer.

fn mds_layer(state: &mut [F])

Linear layer.

fn mds_internal(state: &mut [F])

Utility method for the mds_layer.

fn sbox_layer(state: &mut [F])

The S-Box layer.

fn round(state: &mut [F], round_ctr: usize)

A full round of a permutation for this Anemoi instance.

fn permutation(state: &mut [F])

An entire permutation for this Anemoi instance.

impl Clone for AnemoiVesta_2_1

fn clone(&self) -> AnemoiVesta_2_1

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AnemoiVesta_2_1

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

Formats the value using the given formatter.

impl Jive<Fp<MontBackend<FrConfig, 4>, 4>> for AnemoiVesta_2_1

fn compress(elems: &[Felt]) -> Vec<Felt>

Compresses the provided field element slice as input by 2.

fn compress_k(elems: &[Felt], k: usize) -> Vec<Felt>

Compresses the provided field element slice as input by a factor k.

impl Sponge<Fp<MontBackend<FrConfig, 4>, 4>> for AnemoiVesta_2_1

type Digest = AnemoiDigest

Specifies a digest type returned by this hasher.

fn hash(bytes: &[u8]) -> Self::Digest

Returns a hash of the provided sequence of bytes.

fn hash_field(elems: &[Felt]) -> Self::Digest

Returns a hash of the provided sequence of field elements.

fn merge(digests: &[Self::Digest; 2]) -> Self::Digest

Compresses two given digests into one.