dusk-core: added serde support

core/Cargo.toml

@@ -28,8 +28,14 @@ ark-bn254 = { workspace = true, features = ["curve"], optional = true }
 ark-relations = { workspace = true, optional = true }
 ark-serialize = { workspace = true, optional = true }
 
+# serde support dependencies
+serde = { workspace = true, features = ["derive"], optional = true }
+hex = { workspace = true, optional = true }
+base64 = { workspace = true, optional = true }
+
 [dev-dependencies]
 rand = { workspace = true, features = ["std", "std_rng"] }
+serde_json = { workspace = true }
 
 [features]
 parallel = [
@@ -63,3 +69,12 @@ groth16 = [
 
 # Enables std feature for dusk-plonk
 std = ["dusk-plonk/std"]
+
+serde = [
+    "dep:serde",
+    "hex",
+    "base64",
+    "piecrust-uplink/serde",
+    "bls12_381-bls/serde",
+    "phoenix-core/serde",
+]

core/Makefile

@@ -5,7 +5,7 @@ help: ## Display this help screen
 	@grep -h -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-15s\033[0m %s\n", $$1, $$2}'
 
 test:
-	cargo test --release --features zk 
+	cargo test --release --features zk,serde
 	cargo test --release --no-run
 
 clippy: ## Run clippy

core/src/lib.rs

@@ -28,6 +28,9 @@ pub use error::Error;
 mod dusk;
 pub use dusk::{dusk, from_dusk, Dusk, LUX};
 
+#[cfg(feature = "serde")]
+mod serde_support;
+
 // elliptic curve types
 pub use dusk_bls12_381::BlsScalar;
 pub use dusk_jubjub::{
@@ -135,3 +138,10 @@ fn read_arr<const N: usize>(buf: &mut &[u8]) -> Result<[u8; N], BytesError> {
     *buf = &buf[N..];
     Ok(a)
 }
+
+#[cfg(test)]
+mod tests {
+    // the `unused_crate_dependencies` lint complains for dev-dependencies that
+    // are only used in integration tests, so adding this work-around here
+    use serde_json as _;
+}