From 4c19491b7a0f24fa1aa6294273bab29e9790dce4 Mon Sep 17 00:00:00 2001
From: andrea <andrea@iflabs.network>
Date: Wed, 12 Feb 2025 14:36:00 -0800
Subject: [PATCH] WASM: add bindings for `EphemeralKeyPair`

---
 ironfish-rust-wasm/src/keys/ephemeral.rs | 47 ++++++++++++++++++++++++
 ironfish-rust-wasm/src/keys/mod.rs       |  2 +
 2 files changed, 49 insertions(+)
 create mode 100644 ironfish-rust-wasm/src/keys/ephemeral.rs

diff --git a/ironfish-rust-wasm/src/keys/ephemeral.rs b/ironfish-rust-wasm/src/keys/ephemeral.rs
new file mode 100644
index 0000000000..6aa0b96f85
--- /dev/null
+++ b/ironfish-rust-wasm/src/keys/ephemeral.rs
@@ -0,0 +1,47 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use crate::{
+    errors::IronfishError,
+    primitives::{Fr, SubgroupPoint},
+    wasm_bindgen_wrapper,
+};
+use wasm_bindgen::prelude::*;
+
+wasm_bindgen_wrapper! {
+    #[derive(Clone, PartialEq, Eq, Debug)]
+    pub struct EphemeralKeyPair(ironfish::keys::EphemeralKeyPair);
+}
+
+#[wasm_bindgen]
+impl EphemeralKeyPair {
+    #[wasm_bindgen(constructor)]
+    pub fn deserialize(bytes: &[u8]) -> Result<Self, IronfishError> {
+        Ok(Self(ironfish::keys::EphemeralKeyPair::read(bytes)?))
+    }
+
+    #[wasm_bindgen]
+    pub fn serialize(&self) -> Vec<u8> {
+        let mut buf = Vec::new();
+        self.0
+            .write(&mut buf)
+            .expect("failed to serialize ephemeral key pair");
+        buf
+    }
+
+    #[wasm_bindgen]
+    pub fn random() -> Self {
+        Self(ironfish::keys::EphemeralKeyPair::new())
+    }
+
+    #[wasm_bindgen(getter)]
+    pub fn secret(&self) -> Fr {
+        self.0.secret().to_owned().into()
+    }
+
+    #[wasm_bindgen(getter)]
+    pub fn public(&self) -> SubgroupPoint {
+        self.0.public().to_owned().into()
+    }
+}
diff --git a/ironfish-rust-wasm/src/keys/mod.rs b/ironfish-rust-wasm/src/keys/mod.rs
index b6ed99d489..51c86e8760 100644
--- a/ironfish-rust-wasm/src/keys/mod.rs
+++ b/ironfish-rust-wasm/src/keys/mod.rs
@@ -2,12 +2,14 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
+mod ephemeral;
 mod mnemonics;
 mod proof_generation_key;
 mod public_address;
 mod sapling_key;
 mod view_keys;
 
+pub use ephemeral::EphemeralKeyPair;
 pub use mnemonics::Language;
 pub use proof_generation_key::ProofGenerationKey;
 pub use public_address::PublicAddress;