saymrwulf/curve25519-dalek-source
1
0
Fork 0
mirror of https://github.com/saymrwulf/curve25519-dalek-source.git synced 2026-09-04 20:24:10 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

implement Zeroize trait on Ristretto curve point types

Browse source 
This is helpful for hardening some of our cryptographic implementations
that use Ristretto curve points
This commit is contained in:
Chris Beck 2021-02-10 12:14:32 -07:00
parent 73100b74ff
commit 0154ebbfaf
3 changed files with 9 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
Cargo.toml
View file

@ -48,7 +48,7 @@ serde = { version = "1.0", default-features = false, optional = true, features =
# The original packed_simd package was orphaned, see
# https://github.com/rust-lang/packed_simd/issues/303#issuecomment-701361161
packed_simd = { version = "0.3.4", package = "packed_simd_2", features = ["into_bits"], optional = true }
zeroize = { version = "1", default-features = false }
zeroize = { version = "1", default-features = false, features = ["zeroize_derive"] }
[features]
nightly = ["subtle/nightly"]

6
src/edwards.rs
View file

@ -105,6 +105,8 @@ use subtle::ConditionallyNegatable;
use subtle::ConditionallySelectable;
use subtle::ConstantTimeEq;
use zeroize::Zeroize;
use constants;
use field::FieldElement;
@ -150,7 +152,7 @@ use backend::vector::scalar_mul;
///
/// The first 255 bits of a `CompressedEdwardsY` represent the
/// \\(y\\)-coordinate. The high bit of the 32nd byte gives the sign of \\(x\\).
#[derive(Copy, Clone, Eq, PartialEq, Hash)]
#[derive(Copy, Clone, Eq, PartialEq, Hash, Zeroize)]
pub struct CompressedEdwardsY(pub [u8; 32]);
impl ConstantTimeEq for CompressedEdwardsY {
@ -307,7 +309,7 @@ impl<'de> Deserialize<'de> for CompressedEdwardsY {
// ------------------------------------------------------------------------
/// An `EdwardsPoint` represents a point on the Edwards form of Curve25519.
#[derive(Copy, Clone)]
#[derive(Copy, Clone, Zeroize)]
#[allow(missing_docs)]
pub struct EdwardsPoint {
pub(crate) X: FieldElement,

6
src/ristretto.rs
View file

@ -177,6 +177,8 @@ use subtle::ConditionallySelectable;
use subtle::ConditionallyNegatable;
use subtle::ConstantTimeEq;
use zeroize::Zeroize;
use edwards::EdwardsBasepointTable;
use edwards::EdwardsPoint;
@ -208,7 +210,7 @@ use backend::vector::scalar_mul;
///
/// The Ristretto encoding is canonical, so two points are equal if and
/// only if their encodings are equal.
#[derive(Copy, Clone, Eq, PartialEq, Hash)]
#[derive(Copy, Clone, Eq, PartialEq, Hash, Zeroize)]
pub struct CompressedRistretto(pub [u8; 32]);
impl ConstantTimeEq for CompressedRistretto {
@ -434,7 +436,7 @@ impl<'de> Deserialize<'de> for CompressedRistretto {
/// operations on `RistrettoPoint`s are exactly as fast as operations on
/// `EdwardsPoint`s.
///
#[derive(Copy, Clone)]
#[derive(Copy, Clone, Zeroize)]
pub struct RistrettoPoint(pub(crate) EdwardsPoint);
impl RistrettoPoint {