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Rename lminus1 to l_minus_1

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Henry de Valence 2017-04-28 22:54:00 -07:00
parent 057c84abd5
commit b5ccb42759
2 changed files with 8 additions and 6 deletions
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11
src/constants.rs
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@ -159,12 +159,13 @@ pub const l: Scalar = Scalar([ 0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10 ]);
/// `lminus1` is the order of base point minus one, i.e. 2^252 +
/// `l_minus_1` is the order of base point minus one, i.e. 2^252 +
/// 27742317777372353535851937790883648493 - 1, in little-endian form
pub const lminus1: Scalar = Scalar([ 0xec, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10 ]);
pub const l_minus_1: Scalar = Scalar([ 0xec, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10 ]);
/// The 8-torsion subgroup Ɛ[8].
///
/// In the case of Curve25519, it is cyclic; the `i`th element of the

3
src/scalar.rs
View file

@ -106,7 +106,8 @@ impl Neg for Scalar {
/// Negate this scalar by computing (l - 1) * self - 0 (mod l).
fn neg(self) -> Scalar {
Scalar::multiply_add(&constants::lminus1, &self, &Scalar::zero())
// XXX this could be more efficient
Scalar::multiply_add(&constants::l_minus_1, &self, &Scalar::zero())
}
}