curve25519_dalek::ristretto

Struct VartimeRistrettoPrecomputation

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pub struct VartimeRistrettoPrecomputation(/* private fields */);
Available on crate feature alloc only.
Expand description

Precomputation for variable-time multiscalar multiplication with RistrettoPoints.

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impl VartimePrecomputedMultiscalarMul for VartimeRistrettoPrecomputation

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type Point = RistrettoPoint

The type of point to be multiplied, e.g., RistrettoPoint.
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fn new<I>(static_points: I) -> Self
where I: IntoIterator, I::Item: Borrow<Self::Point>,

Given the static points \( B_i \), perform precomputation and return the precomputation data.
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fn optional_mixed_multiscalar_mul<I, J, K>( &self, static_scalars: I, dynamic_scalars: J, dynamic_points: K, ) -> Option<Self::Point>
where I: IntoIterator, I::Item: Borrow<Scalar>, J: IntoIterator, J::Item: Borrow<Scalar>, K: IntoIterator<Item = Option<Self::Point>>,

Given static_scalars, an iterator of public scalars \(b_i\), dynamic_scalars, an iterator of public scalars \(a_i\), and dynamic_points, an iterator of points \(A_i\), compute $$ Q = a_1 A_1 + \cdots + a_n A_n + b_1 B_1 + \cdots + b_m B_m, $$ where the \(B_j\) are the points that were supplied to new. Read more
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fn vartime_multiscalar_mul<I>(&self, static_scalars: I) -> Self::Point
where I: IntoIterator, I::Item: Borrow<Scalar>,

Given static_scalars, an iterator of public scalars \(b_i\), compute $$ Q = b_1 B_1 + \cdots + b_m B_m, $$ where the \(B_j\) are the points that were supplied to new. Read more
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fn vartime_mixed_multiscalar_mul<I, J, K>( &self, static_scalars: I, dynamic_scalars: J, dynamic_points: K, ) -> Self::Point
where I: IntoIterator, I::Item: Borrow<Scalar>, J: IntoIterator, J::Item: Borrow<Scalar>, K: IntoIterator, K::Item: Borrow<Self::Point>,

Given static_scalars, an iterator of public scalars \(b_i\), dynamic_scalars, an iterator of public scalars \(a_i\), and dynamic_points, an iterator of points \(A_i\), compute $$ Q = a_1 A_1 + \cdots + a_n A_n + b_1 B_1 + \cdots + b_m B_m, $$ where the \(B_j\) are the points that were supplied to new. Read more

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Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes