Derive rkyv for Encryption

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Added Rkyv derivation for Encryption struct
+
 ## [0.4.0] - 2025-03-12
 
 ### Added

Cargo.toml

@@ -10,6 +10,8 @@ exclude = [".github/workflows/dusk-ci.yml", ".gitignore"]
 [dependencies]
 dusk-jubjub = { version = "0.15", default-features = false, features = ["zeroize"] }
 dusk-plonk = { version = "0.21", default-features = false, features = ["alloc"], optional = true }
+rkyv = { version = "0.7", optional = true, default-features = false }
+bytecheck = { version = "0.6", optional = true, default-features = false }
 dusk-bytes = "0.1"
 
 [dev-dependencies]
@@ -18,3 +20,8 @@ rand = { version = "0.8", default-features = false, features = ["std_rng"] }
 
 [features]
 zk = ["dusk-plonk"]
+rkyv-impl = [
+    "dusk-jubjub/rkyv-impl",
+    "rkyv",
+    "bytecheck",
+]

src/lib.rs

@@ -14,6 +14,9 @@ use dusk_jubjub::{
     JubJubAffine, JubJubExtended, JubJubScalar, GENERATOR_EXTENDED,
 };
 
+#[cfg(feature = "rkyv-impl")]
+use rkyv::{Archive, Deserialize, Serialize};
+
 /// This module implements the equivalent plonk-gadgets for encrypting and
 /// decrypting. These gadgets can be used as part of a larger circuit.
 #[cfg(feature = "zk")]
@@ -29,6 +32,11 @@ pub enum DecryptFrom {
 
 /// `ElGamal` encryption of a [`JubJubExtended`] plaintext
 #[derive(Default, Debug, Clone, Copy, PartialEq, Eq)]
+#[cfg_attr(
+    feature = "rkyv-impl",
+    derive(Archive, Deserialize, Serialize),
+    archive_attr(derive(bytecheck::CheckBytes))
+)]
 pub struct Encryption {
     ciphertext_1: JubJubExtended,
     ciphertext_2: JubJubExtended,

src/zk.rs

@@ -20,6 +20,11 @@ pub enum DecryptFrom {
 /// `ElGamal` encryption of a [`JubJubExtended`] plaintext
 /// in a Witness form, meant to be used in-circuit
 #[derive(Debug)]
+#[cfg_attr(
+    feature = "rkyv-impl",
+    derive(Archive, Deserialize, Serialize),
+    archive_attr(derive(bytecheck::CheckBytes))
+)]
 pub struct Encryption {
     pub(crate) ciphertext_1: WitnessPoint,
     pub(crate) ciphertext_2: WitnessPoint,