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Omit 'infinity' field from affine coordinates structure.

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This commit is contained in:
Andy Polyakov 2022-04-13 22:23:23 +02:00
parent 872065c8a1
commit 3507ba6ffe
1 changed files with 0 additions and 25 deletions
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25
src/curves.rs
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@ -53,8 +53,6 @@ macro_rules! new_curve_impl {
$($privacy)* struct $name_affine { $($privacy)* struct $name_affine {
x: $base, x: $base,
y: $base, y: $base,
#[cfg(not(feature = "repr-c"))]
infinity: Choice,
} }
impl fmt::Debug for $name_affine { impl fmt::Debug for $name_affine {
@ -84,8 +82,6 @@ macro_rules! new_curve_impl {
let p = $name_affine { let p = $name_affine {
x, x,
y, y,
#[cfg(not(feature = "repr-c"))]
infinity: Choice::from(0u8),
}; };
break p.to_curve(); break p.to_curve();
} }
@ -204,8 +200,6 @@ macro_rules! new_curve_impl {
q.x = p.x * tmp2; q.x = p.x * tmp2;
q.y = p.y * tmp3; q.y = p.y * tmp3;
#[cfg(not(feature = "repr-c"))]
{ q.infinity = Choice::from(0u8); }
*q = $name_affine::conditional_select(&q, &$name_affine::identity(), skip); *q = $name_affine::conditional_select(&q, &$name_affine::identity(), skip);
} }
@ -221,8 +215,6 @@ macro_rules! new_curve_impl {
let tmp = $name_affine { let tmp = $name_affine {
x, x,
y, y,
#[cfg(not(feature = "repr-c"))]
infinity: Choice::from(0u8),
}; };
$name_affine::conditional_select(&tmp, &$name_affine::identity(), zinv.is_zero()) $name_affine::conditional_select(&tmp, &$name_affine::identity(), zinv.is_zero())
@ -508,8 +500,6 @@ macro_rules! new_curve_impl {
$name_affine { $name_affine {
x: self.x, x: self.x,
y: -self.y, y: -self.y,
#[cfg(not(feature = "repr-c"))]
infinity: self.infinity,
} }
} }
} }
@ -628,16 +618,9 @@ macro_rules! new_curve_impl {
Self { Self {
x: $base::zero(), x: $base::zero(),
y: $base::zero(), y: $base::zero(),
#[cfg(not(feature = "repr-c"))]
infinity: Choice::from(1u8),
} }
} }
#[cfg(not(feature = "repr-c"))]
fn is_identity(&self) -> Choice {
self.infinity
}
#[cfg(feature = "repr-c")]
fn is_identity(&self) -> Choice { fn is_identity(&self) -> Choice {
self.x.is_zero() & self.y.is_zero() self.x.is_zero() & self.y.is_zero()
} }
@ -692,8 +675,6 @@ macro_rules! new_curve_impl {
$name_affine { $name_affine {
x, x,
y, y,
#[cfg(not(feature = "repr-c"))]
infinity: Choice::from(0u8),
}, },
Choice::from(1u8), Choice::from(1u8),
) )
@ -741,8 +722,6 @@ macro_rules! new_curve_impl {
fn from_xy(x: Self::Base, y: Self::Base) -> CtOption<Self> { fn from_xy(x: Self::Base, y: Self::Base) -> CtOption<Self> {
let p = $name_affine { let p = $name_affine {
x, y, x, y,
#[cfg(not(feature = "repr-c"))]
infinity: 0u8.into()
}; };
CtOption::new(p, p.is_on_curve()) CtOption::new(p, p.is_on_curve())
} }
@ -796,8 +775,6 @@ macro_rules! new_curve_impl {
$name_affine { $name_affine {
x: $base::conditional_select(&a.x, &b.x, choice), x: $base::conditional_select(&a.x, &b.x, choice),
y: $base::conditional_select(&a.y, &b.y, choice), y: $base::conditional_select(&a.y, &b.y, choice),
#[cfg(not(feature = "repr-c"))]
infinity: Choice::conditional_select(&a.infinity, &b.infinity, choice),
} }
} }
} }
@ -968,8 +945,6 @@ macro_rules! impl_affine_curve_specific {
Self { Self {
x: NEGATIVE_ONE, x: NEGATIVE_ONE,
y: TWO, y: TWO,
#[cfg(not(feature = "repr-c"))]
infinity: Choice::from(0u8),
} }
} }
}; };