Applies the Poseidon2 permutation function from https://eprint.iacr.org/2023/323 . This algorithm was implemented using https://github.com/HorizenLabs/poseidon2 as a reference. More...

Public Types
using	FF = typename Params::FF

using	State = std::array< FF, t >

using	RoundConstants = std::array< FF, t >

using	MatrixDiagonal = std::array< FF, t >

using	RoundConstantsContainer = std::array< RoundConstants, NUM_ROUNDS >

Static Public Member Functions
static constexpr void	matrix_multiplication_4x4 (State &input)

static constexpr void	add_round_constants (State &input, const RoundConstants &rc)

static constexpr void	matrix_multiplication_internal (State &input)

static constexpr void	matrix_multiplication_external (State &input)

static constexpr void	apply_single_sbox (FF &input)

static constexpr void	apply_sbox (State &input)

static constexpr State	permutation (const State &input)

Static Public Attributes
static constexpr size_t	t = Params::t

static constexpr size_t	d = Params::d

static constexpr size_t	sbox_size = Params::sbox_size

static constexpr size_t	rounds_f = Params::rounds_f

static constexpr size_t	rounds_p = Params::rounds_p

static constexpr size_t	NUM_ROUNDS = Params::rounds_f + Params::rounds_p

static constexpr MatrixDiagonal	internal_matrix_diagonal

static constexpr RoundConstantsContainer	round_constants = Poseidon2Bn254ScalarFieldParams::round_constants

Detailed Description

template<typename Params>
class crypto::Poseidon2Permutation< Params >

Applies the Poseidon2 permutation function from https://eprint.iacr.org/2023/323 . This algorithm was implemented using https://github.com/HorizenLabs/poseidon2 as a reference.

Template Parameters

Params

Member Function Documentation

template<typename Params >

static constexpr void crypto::Poseidon2Permutation< Params >::matrix_multiplication_4x4 ( State & input )

inlinestaticconstexpr

hardcoded algorithm that evaluates matrix multiplication using the following MDS matrix: / \ | 5 7 1 3 | | 4 6 1 1 | | 1 3 5 7 | | 1 1 4 6 | \ /

Algorithm is taken directly from the Poseidon2 paper.

template<typename Params >

constexpr MatrixDiagonal crypto::Poseidon2Permutation< Params >::internal_matrix_diagonal

staticconstexpr

Initial value:

=

Poseidon2Bn254ScalarFieldParams::internal_matrix_diagonal

The documentation for this class was generated from the following file: