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Fill in missing Serde impl for MontgomeryPoint.

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Henry de Valence 2019-10-23 15:55:03 -07:00
parent 0fc534d989
commit 70e46c9826
2 changed files with 18 additions and 1 deletions
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2
Cargo.toml
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@ -42,7 +42,7 @@ byteorder = { version = "^1.2.3", default-features = false, features = ["i128"]
digest = { version = "0.8", default-features = false }
clear_on_drop = "=0.2.3"
subtle = { version = "2", default-features = false }
serde = { version = "1.0", default-features = false, optional = true }
serde = { version = "1.0", default-features = false, optional = true, features = ["derive"] }
packed_simd = { version = "0.3.0", features = ["into_bits"], optional = true }
[features]

17
src/montgomery.rs
View file

@ -64,6 +64,7 @@ use subtle::ConstantTimeEq;
/// Holds the \\(u\\)-coordinate of a point on the Montgomery form of
/// Curve25519 or its twist.
#[derive(Copy, Clone, Debug)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct MontgomeryPoint(pub [u8; 32]);
/// Equality of `MontgomeryPoint`s is defined mod p.
@ -312,6 +313,22 @@ mod test {
#[cfg(feature = "rand")]
use rand_os::OsRng;
#[test]
#[cfg(feature = "serde")]
fn serde_bincode_basepoint_roundtrip() {
use bincode;
let encoded = bincode::serialize(&constants::X25519_BASEPOINT).unwrap();
let decoded: MontgomeryPoint = bincode::deserialize(&encoded).unwrap();
assert_eq!(encoded.len(), 32);
assert_eq!(decoded, constants::X25519_BASEPOINT);
let raw_bytes = constants::X25519_BASEPOINT.as_bytes();
let bp: MontgomeryPoint = bincode::deserialize(raw_bytes).unwrap();
assert_eq!(bp, constants::X25519_BASEPOINT);
}
/// Test Montgomery -> Edwards on the X/Ed25519 basepoint
#[test]
fn basepoint_montgomery_to_edwards() {