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Merge pull request #306 from isislovecruft/feature/236-merge-rebase

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Implement Zeroize for Scalar and MontgomeryPoint
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isis agora lovecruft 2019-10-28 20:28:34 +00:00 committed by GitHub
commit 77203aa1cb
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2 changed files with 18 additions and 2 deletions
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8
src/montgomery.rs
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@ -61,6 +61,8 @@ use subtle::Choice;
use subtle::ConditionallySelectable; use subtle::ConditionallySelectable;
use subtle::ConstantTimeEq; use subtle::ConstantTimeEq;
use zeroize::Zeroize;
/// Holds the \\(u\\)-coordinate of a point on the Montgomery form of /// Holds the \\(u\\)-coordinate of a point on the Montgomery form of
/// Curve25519 or its twist. /// Curve25519 or its twist.
#[derive(Copy, Clone, Debug)] #[derive(Copy, Clone, Debug)]
@ -91,6 +93,12 @@ impl PartialEq for MontgomeryPoint {
impl Eq for MontgomeryPoint {} impl Eq for MontgomeryPoint {}
impl Zeroize for MontgomeryPoint {
fn zeroize(&mut self) {
self.0.zeroize();
}
}
impl MontgomeryPoint { impl MontgomeryPoint {
/// View this `MontgomeryPoint` as an array of bytes. /// View this `MontgomeryPoint` as an array of bytes.
pub fn as_bytes<'a>(&'a self) -> &'a [u8; 32] { pub fn as_bytes<'a>(&'a self) -> &'a [u8; 32] {

8
src/scalar.rs
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@ -160,6 +160,8 @@ use subtle::Choice;
use subtle::ConditionallySelectable; use subtle::ConditionallySelectable;
use subtle::ConstantTimeEq; use subtle::ConstantTimeEq;
use zeroize::Zeroize;
use backend; use backend;
use constants; use constants;
@ -522,6 +524,12 @@ impl From<u128> for Scalar {
} }
} }
impl Zeroize for Scalar {
fn zeroize(&mut self) {
self.bytes.zeroize();
}
}
impl Scalar { impl Scalar {
/// Return a `Scalar` chosen uniformly at random using a user-provided RNG. /// Return a `Scalar` chosen uniformly at random using a user-provided RNG.
/// ///