ECNTT

ECNTT Method

The ecntt function computes the Elliptic Curve Number Theoretic Transform (EC-NTT) or its inverse on a batch of points of a curve.

pub fn ecntt<C: Curve>(
    input: &(impl HostOrDeviceSlice<Projective<C>> + ?Sized),
    dir: NTTDir,
    cfg: &NTTConfig<C::ScalarField>,
    output: &mut (impl HostOrDeviceSlice<Projective<C>> + ?Sized),
) -> IcicleResult<()>
where
    C::ScalarField: FieldImpl,
    <C::ScalarField as FieldImpl>::Config: ECNTT<C>,
{
    // ... function implementation ...
}

Parameters

• input: The input data as a slice of Projective<C>. This represents points on a specific elliptic curve C.
• dir: The direction of the NTT. It can be NTTDir::kForward for forward NTT or NTTDir::kInverse for inverse NTT.
• cfg: The NTT configuration object of type NTTConfig<C::ScalarField>. This object specifies parameters for the NTT computation, such as the batch size and algorithm to use.
• output: The output buffer to write the results into. This should be a slice of Projective<C> with the same size as the input.

Return Value

• IcicleResult<()>: This function returns an IcicleResult which is a wrapper type that indicates success or failure of the NTT computation. On success, it contains Ok(()).