fn hash_to_curve()

in src/group/mod.rs [60:90]

• 19 lines of code
• 1 McCabe index (conditional complexity)

    fn hash_to_curve<CS: CipherSuite>(
        input: &[&[u8]],
        dst: &[u8],
    ) -> Result<Self::Elem, InternalError>
    where
        <CS::Hash as OutputSizeUser>::OutputSize:
            IsLess<U256> + IsLessOrEqual<<CS::Hash as BlockSizeUser>::BlockSize>;

    /// Hashes a slice of pseudo-random bytes to a scalar
    ///
    /// # Errors
    /// [`Error::Input`](crate::Error::Input) if the `input` is empty or longer
    /// then [`u16::MAX`].
    fn hash_to_scalar<CS: CipherSuite>(
        input: &[&[u8]],
        dst: &[u8],
    ) -> Result<Self::Scalar, InternalError>
    where
        <CS::Hash as OutputSizeUser>::OutputSize:
            IsLess<U256> + IsLessOrEqual<<CS::Hash as BlockSizeUser>::BlockSize>;

    /// Get the base point for the group
    fn base_elem() -> Self::Elem;

    /// Returns the identity group element
    fn identity_elem() -> Self::Elem;

    /// Returns `true` if the element is equal to the identity element
    fn is_identity_elem(elem: Self::Elem) -> Choice {
        Self::identity_elem().ct_eq(&elem)
    }