Trait spake2::Group

pub trait Group {
    type Scalar;
    type Element;
    type TranscriptHash;

    // Required methods
    fn name() -> &'static str;
    fn const_m() -> Self::Element;
    fn const_n() -> Self::Element;
    fn const_s() -> Self::Element;
    fn hash_to_scalar(s: &[u8]) -> Self::Scalar;
    fn random_scalar<T>(cspring: &mut T) -> Self::Scalar
       where T: RngCore + CryptoRng;
    fn scalar_neg(s: &Self::Scalar) -> Self::Scalar;
    fn element_to_bytes(e: &Self::Element) -> Vec<u8> ;
    fn bytes_to_element(b: &[u8]) -> Option<Self::Element>;
    fn element_length() -> usize;
    fn basepoint_mult(s: &Self::Scalar) -> Self::Element;
    fn scalarmult(e: &Self::Element, s: &Self::Scalar) -> Self::Element;
    fn add(a: &Self::Element, b: &Self::Element) -> Self::Element;
}

Group trait.

Required Associated Types

type Scalar

Scalar element

type Element

Base field element

type TranscriptHash

Transcript hash

Required Methods

fn name() -> &'static str

Name

fn const_m() -> Self::Element

m constant

fn const_n() -> Self::Element

n constant

fn const_s() -> Self::Element

s constant

fn hash_to_scalar(s: &[u8]) -> Self::Scalar

Hash to scalar

fn random_scalar<T>(cspring: &mut T) -> Self::Scalarwhere T: RngCore + CryptoRng,

Generate a random scalar

fn scalar_neg(s: &Self::Scalar) -> Self::Scalar

Scalar negation

fn element_to_bytes(e: &Self::Element) -> Vec<u8>

Convert base field element to bytes

fn bytes_to_element(b: &[u8]) -> Option<Self::Element>

Convert bytes to base field element

fn element_length() -> usize

Length of a base field element

fn basepoint_mult(s: &Self::Scalar) -> Self::Element

Fixed-base scalar multiplication

fn scalarmult(e: &Self::Element, s: &Self::Scalar) -> Self::Element

Variable-base scalar multiplication

fn add(a: &Self::Element, b: &Self::Element) -> Self::Element

Group operation

Implementors

impl Group for Ed25519Group

type Scalar = Scalar

type Element = EdwardsPoint

type TranscriptHash = CoreWrapper<CtVariableCoreWrapper<Sha256VarCore, UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, OidSha256>>