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`impl ConstantTimeEq for {Extended}SpendingKey`

This commit is contained in:
Jack Grigg 2021-11-30 23:24:50 +00:00
parent 68b790c7da
commit 674ceb54c8
2 changed files with 17 additions and 0 deletions
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6
src/keys.rs
View File

@ -35,6 +35,12 @@ const ZIP32_PURPOSE: u32 = 32;
#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord)]
pub struct SpendingKey([u8; 32]);
impl ConstantTimeEq for SpendingKey {
fn ct_eq(&self, other: &Self) -> Choice {
self.to_bytes().ct_eq(other.to_bytes())
}
}
impl SpendingKey {
/// Generates a random spending key.
///

11
src/zip32.rs
View File

@ -6,6 +6,7 @@ use std::{
};
use blake2b_simd::Params as Blake2bParams;
use subtle::{Choice, ConstantTimeEq};
use crate::{
keys::{FullViewingKey, SpendingKey},
@ -101,6 +102,16 @@ pub(crate) struct ExtendedSpendingKey {
sk: SpendingKey,
}
impl ConstantTimeEq for ExtendedSpendingKey {
fn ct_eq(&self, rhs: &Self) -> Choice {
self.depth.ct_eq(&rhs.depth)
& self.parent_fvk_tag.0.ct_eq(&rhs.parent_fvk_tag.0)
& self.child_index.0.ct_eq(&rhs.child_index.0)
& self.chain_code.0.ct_eq(&rhs.chain_code.0)
& self.sk.ct_eq(&rhs.sk)
}
}
impl std::cmp::PartialEq for ExtendedSpendingKey {
fn eq(&self, rhs: &ExtendedSpendingKey) -> bool {
self.depth == rhs.depth