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Correct secq256k1/embedwards25519 Zeroize implementations

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This commit is contained in:
Luke Parker
2025-08-25 04:54:08 -04:00
parent 738babf7e9
commit c24b694fb2
2 changed files with 26 additions and 2 deletions
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14
crypto/evrf/embedwards25519/src/point.rs
View File

@@ -30,7 +30,7 @@ fn recover_y(x: FieldElement) -> CtOption<FieldElement> {
} }
/// Point. /// Point.
#[derive(Clone, Copy, Debug, Zeroize)] #[derive(Clone, Copy, Debug)]
#[repr(C)] #[repr(C)]
pub struct Point { pub struct Point {
x: FieldElement, // / Z x: FieldElement, // / Z
@@ -38,6 +38,18 @@ pub struct Point {
z: FieldElement, z: FieldElement,
} }
impl Zeroize for Point {
fn zeroize(&mut self) {
self.x.zeroize();
self.y.zeroize();
self.z.zeroize();
let identity = Self::identity();
self.x = identity.x;
self.y = identity.y;
self.z = identity.z;
}
}
impl ConstantTimeEq for Point { impl ConstantTimeEq for Point {
fn ct_eq(&self, other: &Self) -> Choice { fn ct_eq(&self, other: &Self) -> Choice {
let x1 = self.x * other.z; let x1 = self.x * other.z;

14
crypto/evrf/secq256k1/src/point.rs
View File

@@ -24,7 +24,7 @@ fn recover_y(x: FieldElement) -> CtOption<FieldElement> {
} }
/// Point. /// Point.
#[derive(Clone, Copy, Debug, Zeroize)] #[derive(Clone, Copy, Debug)]
#[repr(C)] #[repr(C)]
pub struct Point { pub struct Point {
x: FieldElement, // / Z x: FieldElement, // / Z
@@ -32,6 +32,18 @@ pub struct Point {
z: FieldElement, z: FieldElement,
} }
impl Zeroize for Point {
fn zeroize(&mut self) {
self.x.zeroize();
self.y.zeroize();
self.z.zeroize();
let identity = Self::identity();
self.x = identity.x;
self.y = identity.y;
self.z = identity.z;
}
}
impl ConstantTimeEq for Point { impl ConstantTimeEq for Point {
fn ct_eq(&self, other: &Self) -> Choice { fn ct_eq(&self, other: &Self) -> Choice {
let x1 = self.x * other.z; let x1 = self.x * other.z;