WASM: add bindings for EphemeralKeyPair

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()
+    }
+}