Struct snarkvm_curves::edwards_bls12::fr::FrParameters

pub struct FrParameters;

Trait Implementations

impl FftParameters for FrParameters

type BigInteger = BigInteger256

const TWO_ADICITY: u32 = 1u32

Let N be the size of the multiplicative group defined by the field. Then TWO_ADICITY is the two-adicity of N, i.e. the integer s such that N = 2^s * t for some odd integer t. 2^s * t = MODULUS - 1 with t odd. This is the two-adicity of the prime.

const TWO_ADIC_ROOT_OF_UNITY: BigInteger = _

2^s root of unity computed by GENERATOR^t

const SMALL_SUBGROUP_BASE: Option<u32> =

An integer b such that there exists a multiplicative subgroup of size b^k for some integer k.

const SMALL_SUBGROUP_BASE_ADICITY: Option<u32> =

The integer k such that there exists a multiplicative subgroup of size Self::SMALL_SUBGROUP_BASE^k.

const LARGE_SUBGROUP_ROOT_OF_UNITY: Option<Self::BigInteger> =

GENERATOR^((MODULUS-1) / (2^s * SMALL_SUBGROUP_BASE^SMALL_SUBGROUP_BASE_ADICITY)) Used for mixed-radix FFT.

impl FieldParameters for FrParameters

const GENERATOR: BigInteger = _

70865795004005329077606947863872807680085016823885970091001235374859923341923

const MODULUS: BigInteger = _

MODULUS = 2111115437357092606062206234695386632838870926408408195193685246394721360383

const CAPACITY: u32 = 250u32

The number of bits that can be reliably stored. (Should equal SELF::MODULUS_BITS - 1)

const INV: u64 = 9_659_935_179_256_617_473u64

INV = -(MODULUS^{-1} mod MODULUS) mod MODULUS

const MODULUS_BITS: u32 = 251u32

The number of bits needed to represent the Self::MODULUS.

const MODULUS_MINUS_ONE_DIV_TWO: BigInteger = _

(Self::MODULUS - 1) / 2

const R: BigInteger = _

R = 2^256 % Self::MODULUS

const R2: BigInteger = _

R2 = R^2 % Self::MODULUS

const REPR_SHAVE_BITS: u32 = 5u32

The number of bits that must be shaved from the beginning of the representation when randomly sampling.

const T: BigInteger = _

t for 2^s * t = MODULUS - 1

const T_MINUS_ONE_DIV_TWO: BigInteger = _

(t - 1) / 2

impl PoseidonDefaultParameters for FrParameters

const PARAMS_OPT_FOR_CONSTRAINTS: [PoseidonDefaultParametersEntry; 7] = _

An array of the parameters optimized for constraints (rate, alpha, full_rounds, partial_rounds, skip_matrices) for rate = 2, 3, 4, 5, 6, 7, 8

impl Fp256Parameters for FrParameters