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curve: Implement ConditionallySelectable for MontgomeryPoint (#677)

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Elichai Turkel 2024-07-30 08:51:44 +03:00 committed by GitHub
parent a7a9fffdc9
commit 79ab6c29bd
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2 changed files with 7 additions and 1 deletions
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2
curve25519-dalek/Cargo.toml
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@ -51,7 +51,7 @@ ff = { version = "0.13", default-features = false, optional = true }
group = { version = "0.13", default-features = false, optional = true } group = { version = "0.13", default-features = false, optional = true }
rand_core = { version = "0.6.4", default-features = false, optional = true } rand_core = { version = "0.6.4", default-features = false, optional = true }
digest = { version = "0.10", default-features = false, optional = true } digest = { version = "0.10", default-features = false, optional = true }
subtle = { version = "2.6.0", default-features = false } subtle = { version = "2.6.0", default-features = false, features = ["const-generics"]}
serde = { version = "1.0", default-features = false, optional = true, features = ["derive"] } serde = { version = "1.0", default-features = false, optional = true, features = ["derive"] }
zeroize = { version = "1", default-features = false, optional = true } zeroize = { version = "1", default-features = false, optional = true }

6
curve25519-dalek/src/montgomery.rs
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@ -84,6 +84,12 @@ impl ConstantTimeEq for MontgomeryPoint {
} }
} }
impl ConditionallySelectable for MontgomeryPoint {
fn conditional_select(a: &Self, b: &Self, choice: Choice) -> Self {
Self(<[u8; 32]>::conditional_select(&a.0, &b.0, choice))
}
}
impl PartialEq for MontgomeryPoint { impl PartialEq for MontgomeryPoint {
fn eq(&self, other: &MontgomeryPoint) -> bool { fn eq(&self, other: &MontgomeryPoint) -> bool {
self.ct_eq(other).into() self.ct_eq(other).into()