Fixed doc warnings

This commit is contained in:
Michael Rosenberg 2022-10-22 14:39:40 -04:00
parent 45d6adba73
commit a743ea5348
No known key found for this signature in database
8 changed files with 40 additions and 40 deletions

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@ -207,7 +207,7 @@ $$
(S\_8 \cdot S\_9 &&,&& S\_5 \cdot S\_6 &&,&& S\_8 \cdot S\_6 &&,&& S\_5 \cdot S\_9)
\end{aligned}
$$
to obtain \\( P\_3 = (X\_3 : Y\_3 : Z\_3 : T\_3) = [2]P\_1 \\).
to obtain \\( P\_3 = (X\_3 : Y\_3 : Z\_3 : T\_3) = \[2\]P\_1 \\).
The intermediate step between the squaring and multiplication requires
a long chain of additions. For the IFMA-based implementation, this is not a problem; for the AVX2-based implementation, it is, but with some care and finesse, it's possible to arrange the computation without requiring an intermediate reduction.

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@ -14,8 +14,7 @@
//! When the vector backend is disabled, the crate uses the
//! mixed-model strategy for implementing point operations and scalar
//! multiplication; see the [`curve_models`](self::curve_models) and
//! [`scalar_mul`](self::scalar_mul) documentation for more
//! information.
//! [`scalar_mul`] documentation for more information.
//!
//! When the vector backend is enabled, the field and scalar
//! implementations are still used for non-vectorized operations.

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@ -122,14 +122,14 @@ pub const ED25519_BASEPOINT_POINT: EdwardsPoint = EdwardsPoint {
]),
};
/// The 8-torsion subgroup \\(\mathcal E [8]\\).
/// The 8-torsion subgroup \\(\mathcal E \[8\]\\).
///
/// In the case of Curve25519, it is cyclic; the \\(i\\)-th element of
/// the array is \\([i]P\\), where \\(P\\) is a point of order \\(8\\)
/// generating \\(\mathcal E[8]\\).
/// generating \\(\mathcal E\[8\]\\).
///
/// Thus \\(\mathcal E[4]\\) is the points indexed by `0,2,4,6`, and
/// \\(\mathcal E[2]\\) is the points indexed by `0,4`.
/// Thus \\(\mathcal E\[4\]\\) is the points indexed by `0,2,4,6`, and
/// \\(\mathcal E\[2\]\\) is the points indexed by `0,4`.
/// The Ed25519 basepoint has y = 4/5. This is called `_POINT` to
/// distinguish it from `_TABLE`, which should be used for scalar
/// multiplication (it's much faster).

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@ -167,14 +167,14 @@ pub const ED25519_BASEPOINT_POINT: EdwardsPoint = EdwardsPoint {
]),
};
/// The 8-torsion subgroup \\(\mathcal E [8]\\).
/// The 8-torsion subgroup \\(\mathcal E \[8\]\\).
///
/// In the case of Curve25519, it is cyclic; the \\(i\\)-th element of
/// the array is \\([i]P\\), where \\(P\\) is a point of order \\(8\\)
/// generating \\(\mathcal E[8]\\).
/// the array is \\(\[i\]P\\), where \\(P\\) is a point of order \\(8\\)
/// generating \\(\mathcal E\[8\]\\).
///
/// Thus \\(\mathcal E[4]\\) is the points indexed by `0,2,4,6`, and
/// \\(\mathcal E[2]\\) is the points indexed by `0,4`.
/// Thus \\(\mathcal E\[4\]\\) is the points indexed by `0,2,4,6`, and
/// \\(\mathcal E\[2\]\\) is the points indexed by `0,4`.
pub const EIGHT_TORSION: [EdwardsPoint; 8] = EIGHT_TORSION_INNER_DOC_HIDDEN;
/// Inner item used to hide limb constants from cargo doc output.

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@ -18,7 +18,7 @@
//!
//! ## Equality Testing
//!
//! The `EdwardsPoint` struct implements the `subtle::ConstantTimeEq`
//! The `EdwardsPoint` struct implements the [`subtle::ConstantTimeEq`]
//! trait for constant-time equality checking, and the Rust `Eq` trait
//! for variable-time equality checking.
//!
@ -26,26 +26,26 @@
//!
//! The order of the group of points on the curve \\(\mathcal E\\)
//! is \\(|\mathcal E| = 8\ell \\), so its structure is \\( \mathcal
//! E = \mathcal E[8] \times \mathcal E[\ell]\\). The torsion
//! subgroup \\( \mathcal E[8] \\) consists of eight points of small
//! E = \mathcal E\[8\] \times \mathcal E[\ell]\\). The torsion
//! subgroup \\( \mathcal E\[8\] \\) consists of eight points of small
//! order. Technically, all of \\(\mathcal E\\) is torsion, but we
//! use the word only to refer to the small \\(\mathcal E[8]\\) part, not
//! use the word only to refer to the small \\(\mathcal E\[8\]\\) part, not
//! the large prime-order \\(\mathcal E[\ell]\\) part.
//!
//! To test if a point is in \\( \mathcal E[8] \\), use
//! `EdwardsPoint::is_small_order()`.
//! To test if a point is in \\( \mathcal E\[8\] \\), use
//! [`EdwardsPoint::is_small_order`].
//!
//! To test if a point is in \\( \mathcal E[\ell] \\), use
//! `EdwardsPoint::is_torsion_free()`.
//! [`EdwardsPoint::is_torsion_free`].
//!
//! To multiply by the cofactor, use `EdwardsPoint::mul_by_cofactor()`.
//! To multiply by the cofactor, use [`EdwardsPoint::mul_by_cofactor`].
//!
//! To avoid dealing with cofactors entirely, consider using Ristretto.
//!
//! ## Scalars
//!
//! Scalars are represented by the `Scalar` struct. To construct a scalar with a specific bit
//! pattern, see `Scalar::from_bits()`.
//! Scalars are represented by the [`Scalar`] struct. To construct a scalar with a specific bit
//! pattern, see [`Scalar::from_bits`].
//!
//! ## Scalar Multiplication
//!
@ -825,7 +825,7 @@ macro_rules! impl_basepoint_table {
(Name = $name:ident, LookupTable = $table:ident, Point = $point:ty, Radix = $radix:expr, Additions = $adds:expr) => {
/// A precomputed table of multiples of a basepoint, for accelerating
/// fixed-base scalar multiplication. One table, for the Ed25519
/// basepoint, is provided in the `constants` module.
/// basepoint, is provided in the [`constants`] module.
///
/// The basepoint tables are reasonably large, so they should probably be boxed.
///
@ -833,7 +833,8 @@ macro_rules! impl_basepoint_table {
/// multiplication are as follows:
///
/// * [`EdwardsBasepointTableRadix16`]: 30KB, 64A
/// (this is the default size, and is used for [`ED25519_BASEPOINT_TABLE`])
/// (this is the default size, and is used for
/// [`constants::ED25519_BASEPOINT_TABLE`])
/// * [`EdwardsBasepointTableRadix64`]: 120KB, 43A
/// * [`EdwardsBasepointTableRadix128`]: 240KB, 37A
/// * [`EdwardsBasepointTableRadix256`]: 480KB, 33A
@ -978,7 +979,7 @@ impl_basepoint_table! {Name = EdwardsBasepointTableRadix128, LookupTable = Looku
impl_basepoint_table! {Name = EdwardsBasepointTableRadix256, LookupTable = LookupTableRadix256, Point = EdwardsPoint, Radix = 8, Additions = 33}
/// A type-alias for [`EdwardsBasepointTable`] because the latter is
/// used as a constructor in the `constants` module.
/// used as a constructor in the [`constants`] module.
//
// Same as for `LookupTableRadix16`, we have to define `EdwardsBasepointTable`
// first, because it's used as a constructor, and then provide a type alias for
@ -1016,7 +1017,7 @@ impl_basepoint_table_conversions! {LHS = EdwardsBasepointTableRadix64, RHS = Edw
impl_basepoint_table_conversions! {LHS = EdwardsBasepointTableRadix128, RHS = EdwardsBasepointTableRadix256}
impl EdwardsPoint {
/// Multiply by the cofactor: return \\([8]P\\).
/// Multiply by the cofactor: return \\(\[8\]P\\).
pub fn mul_by_cofactor(&self) -> EdwardsPoint {
self.mul_by_pow_2(3)
}
@ -1038,8 +1039,8 @@ impl EdwardsPoint {
///
/// # Return
///
/// * `true` if `self` is in the torsion subgroup \\( \mathcal E[8] \\);
/// * `false` if `self` is not in the torsion subgroup \\( \mathcal E[8] \\).
/// * `true` if `self` is in the torsion subgroup \\( \mathcal E\[8\] \\);
/// * `false` if `self` is not in the torsion subgroup \\( \mathcal E\[8\] \\).
///
/// # Example
///

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@ -253,7 +253,7 @@ impl ProjectivePoint {
/// and the affine difference
/// \\( u\_{P-Q} = u(P-Q) \\), set
/// $$
/// (U\_P : W\_P) \gets u([2]P)
/// (U\_P : W\_P) \gets u(\[2\]P)
/// $$
/// and
/// $$
@ -317,7 +317,7 @@ define_mul_variants!(
impl<'a, 'b> Mul<&'b Scalar> for &'a MontgomeryPoint {
type Output = MontgomeryPoint;
/// Given `self` \\( = u\_0(P) \\), and a `Scalar` \\(n\\), return \\( u\_0([n]P) \\).
/// Given `self` \\( = u\_0(P) \\), and a `Scalar` \\(n\\), return \\( u\_0(\[n\]P) \\).
fn mul(self, scalar: &'b Scalar) -> MontgomeryPoint {
// Algorithm 8 of Costello-Smith 2017
let affine_u = FieldElement::from_bytes(&self.0);

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@ -124,7 +124,7 @@
//! ## Implementation
//!
//! The Decaf suggestion is to use a quotient group, such as \\(\mathcal
//! E / \mathcal E[4]\\) or \\(2 \mathcal E / \mathcal E[2] \\), to
//! E / \mathcal E\[4\]\\) or \\(2 \mathcal E / \mathcal E\[2\] \\), to
//! implement a prime-order group using a non-prime-order curve.
//!
//! This requires only changing
@ -498,7 +498,7 @@ impl RistrettoPoint {
///
/// However, given input points \\( P\_1, \ldots, P\_n, \\)
/// it is possible to compute the encodings of their doubles \\(
/// \mathrm{enc}( [2]P\_1), \ldots, \mathrm{enc}( [2]P\_n ) \\)
/// \mathrm{enc}( \[2\]P\_1), \ldots, \mathrm{enc}( \[2\]P\_n ) \\)
/// in a batch.
///
/// ```
@ -605,7 +605,7 @@ impl RistrettoPoint {
.collect()
}
/// Return the coset self + E[4], for debugging.
/// Return the coset self + E\[4\], for debugging.
fn coset4(&self) -> [EdwardsPoint; 4] {
[
self.0,

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@ -263,15 +263,15 @@ pub trait VartimeMultiscalarMul {
///
/// This trait has three methods for performing this computation:
///
/// * [`vartime_multiscalar_mul`], which handles the special case
/// where \\(n = 0\\) and there are no dynamic points;
/// * [`Self::vartime_multiscalar_mul`], which handles the special case where
/// \\(n = 0\\) and there are no dynamic points;
///
/// * [`vartime_mixed_multiscalar_mul`], which takes the dynamic
/// points as already-validated `Point`s and is infallible;
/// * [`Self::vartime_mixed_multiscalar_mul`], which takes the dynamic points as
/// already-validated `Point`s and is infallible;
///
/// * [`optional_mixed_multiscalar_mul`], which takes the dynamic
/// points as `Option<Point>`s and returns an `Option<Point>`,
/// allowing decompression to be composed into the input iterators.
/// * [`Self::optional_mixed_multiscalar_mul`], which takes the dynamic points
/// as `Option<Point>`s and returns an `Option<Point>`, allowing decompression
/// to be composed into the input iterators.
///
/// All methods require that the lengths of the input iterators be
/// known and matching, as if they were `ExactSizeIterator`s. (It