Struct curve25519_dalek::backend::vector::scalar_mul::pippenger::spec_avx512ifma_avx512vl::Pippenger

pub struct Pippenger;

Available on curve25519_dalek_backend="simd" and crate feature alloc and nightly only.

Implements a version of Pippenger’s algorithm.

See the documentation in the serial scalar_mul::pippenger module for details.

Trait Implementations

impl VartimeMultiscalarMul for Pippenger

type Point = EdwardsPoint

The type of point being multiplied, e.g., RistrettoPoint.

fn optional_multiscalar_mul<I, J>(scalars: I, points: J) -> Option<EdwardsPoint>where I: IntoIterator, I::Item: Borrow<Scalar>, J: IntoIterator<Item = Option<EdwardsPoint>>,

Given an iterator of public scalars and an iterator of Options of points, compute either Some(Q), where $$ Q = c_1 P_1 + \cdots + c_n P_n, $$ if all points were Some(P_i), or else return None.

fn vartime_multiscalar_mul<I, J>(scalars: I, points: J) -> Self::Pointwhere I: IntoIterator, I::Item: Borrow<Scalar>, J: IntoIterator, J::Item: Borrow<Self::Point>, Self::Point: Clone,

Given an iterator of public scalars and an iterator of public points, compute $$ Q = c_1 P_1 + \cdots + c_n P_n, $$ using variable-time operations.