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Rename k_fold_scalar_mult to multiscalar_mult

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Henry de Valence 2017-07-30 22:16:22 -07:00
parent 9c4046c3d9
commit aaefb90ed3
2 changed files with 12 additions and 12 deletions
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20
src/curve.rs
View file

@ -935,14 +935,14 @@ impl<'a, 'b> Mul<&'b ExtendedPoint> for &'a Scalar {
/// (possibly secret) points, compute `c_1 P_1 + ... + c_n P_n`. /// (possibly secret) points, compute `c_1 P_1 + ... + c_n P_n`.
/// ///
/// This function has the same behaviour as /// This function has the same behaviour as
/// `vartime::k_fold_scalar_mult` but is constant-time. /// `vartime::multiscalar_mult` but is constant-time.
/// ///
/// # Input /// # Input
/// ///
/// A vector of `Scalar`s and a vector of `ExtendedPoints`. It is an /// A vector of `Scalar`s and a vector of `ExtendedPoints`. It is an
/// error to call this function with two vectors of different lengths. /// error to call this function with two vectors of different lengths.
#[cfg(any(feature = "alloc", feature = "std"))] #[cfg(any(feature = "alloc", feature = "std"))]
pub fn k_fold_scalar_mult<'a, 'b, I, J>(scalars: I, points: J) -> ExtendedPoint pub fn multiscalar_mult<'a, 'b, I, J>(scalars: I, points: J) -> ExtendedPoint
where I: IntoIterator<Item = &'a Scalar>, where I: IntoIterator<Item = &'a Scalar>,
J: IntoIterator<Item = &'b ExtendedPoint> J: IntoIterator<Item = &'b ExtendedPoint>
{ {
@ -1281,7 +1281,7 @@ pub mod vartime {
/// A vector of `Scalar`s and a vector of `ExtendedPoints`. It is an /// A vector of `Scalar`s and a vector of `ExtendedPoints`. It is an
/// error to call this function with two vectors of different lengths. /// error to call this function with two vectors of different lengths.
#[cfg(any(feature = "alloc", feature = "std"))] #[cfg(any(feature = "alloc", feature = "std"))]
pub fn k_fold_scalar_mult<'a, 'b, I, J>(scalars: I, points: J) -> ExtendedPoint pub fn multiscalar_mult<'a, 'b, I, J>(scalars: I, points: J) -> ExtendedPoint
where I: IntoIterator<Item = &'a Scalar>, where I: IntoIterator<Item = &'a Scalar>,
J: IntoIterator<Item = &'b ExtendedPoint> J: IntoIterator<Item = &'b ExtendedPoint>
{ {
@ -1713,9 +1713,9 @@ mod test {
} }
#[test] #[test]
fn k_fold_scalar_mult_vs_ed25519py() { fn multiscalar_mult_vs_ed25519py() {
let A = A_TIMES_BASEPOINT.decompress().unwrap(); let A = A_TIMES_BASEPOINT.decompress().unwrap();
let result = vartime::k_fold_scalar_mult( let result = vartime::multiscalar_mult(
&[A_SCALAR, B_SCALAR], &[A_SCALAR, B_SCALAR],
&[A, constants::ED25519_BASEPOINT] &[A, constants::ED25519_BASEPOINT]
); );
@ -1723,13 +1723,13 @@ mod test {
} }
#[test] #[test]
fn k_fold_scalar_mult_vartime_vs_consttime() { fn multiscalar_mult_vartime_vs_consttime() {
let A = A_TIMES_BASEPOINT.decompress().unwrap(); let A = A_TIMES_BASEPOINT.decompress().unwrap();
let result_vartime = vartime::k_fold_scalar_mult( let result_vartime = vartime::multiscalar_mult(
&[A_SCALAR, B_SCALAR], &[A_SCALAR, B_SCALAR],
&[A, constants::ED25519_BASEPOINT] &[A, constants::ED25519_BASEPOINT]
); );
let result_consttime = k_fold_scalar_mult( let result_consttime = multiscalar_mult(
&[A_SCALAR, B_SCALAR], &[A_SCALAR, B_SCALAR],
&[A, constants::ED25519_BASEPOINT] &[A, constants::ED25519_BASEPOINT]
); );
@ -1871,7 +1871,7 @@ mod bench {
let B = &constants::ED25519_BASEPOINT_TABLE; let B = &constants::ED25519_BASEPOINT_TABLE;
let points: Vec<_> = scalars.iter().map(|s| B * &s).collect(); let points: Vec<_> = scalars.iter().map(|s| B * &s).collect();
b.iter(|| k_fold_scalar_mult(&scalars, &points)); b.iter(|| multiscalar_mult(&scalars, &points));
} }
mod vartime { mod vartime {
@ -1900,7 +1900,7 @@ mod bench {
// //
// Since this is a variable-time function, this means the // Since this is a variable-time function, this means the
// benchmark is only useful as a ballpark measurement. // benchmark is only useful as a ballpark measurement.
b.iter(|| vartime::k_fold_scalar_mult(&scalars, &points)); b.iter(|| vartime::multiscalar_mult(&scalars, &points));
} }
} }
} }

4
src/decaf.rs
View file

@ -683,12 +683,12 @@ pub mod vartime {
/// ///
/// A vector of `Scalar`s and a vector of `ExtendedPoints`. It is an /// A vector of `Scalar`s and a vector of `ExtendedPoints`. It is an
/// error to call this function with two vectors of different lengths. /// error to call this function with two vectors of different lengths.
pub fn k_fold_scalar_mult<'a, 'b, I, J>(scalars: I, points: J) -> DecafPoint pub fn multiscalar_mult<'a, 'b, I, J>(scalars: I, points: J) -> DecafPoint
where I: IntoIterator<Item = &'a Scalar>, where I: IntoIterator<Item = &'a Scalar>,
J: IntoIterator<Item = &'b DecafPoint> J: IntoIterator<Item = &'b DecafPoint>
{ {
let extended_points = points.into_iter().map(|P| &P.0); let extended_points = points.into_iter().map(|P| &P.0);
DecafPoint(curve::vartime::k_fold_scalar_mult(scalars, extended_points)) DecafPoint(curve::vartime::multiscalar_mult(scalars, extended_points))
} }
} }