optimize code structure

Cargo.toml

@@ -34,7 +34,7 @@ members = [
     "protos",
     "third_party/fisco_bcos",
     "third_party/fisco_bcos_java_sdk",
-    "third_party/ecdh_psi/psi_utils",
-    "third_party/ecdh_psi/ffi_java_ecdh_psi",
-    "third_party/ecdh_psi/ffi_wasm_ecdh_psi",
+    "crypto/ecc/ecc_ed25519",
+    "crypto/ecc/ffi_java_ecc_ed25519",
+    "crypto/ecc/ffi_wasm_ecc_ed25519",
 ]

third_party/ecdh_psi/psi_utils/Cargo.toml → crypto/ecc/ecc_ed25519/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "psi_utils"
+name = "ecc_ed25519"
 version = "0.1.0"
 edition = "2021"
 

crypto/ecc/ecc_ed25519/src/lib.rs

@@ -0,0 +1,58 @@
+use sha2::Sha512;
+// use sha2::Digest;
+use rand::rngs::ThreadRng;
+// use rand::RngCore;
+use curve25519_dalek::{edwards::CompressedEdwardsY, Scalar};
+
+const SCALAR_SIZE: usize = 32;
+const POINT_SIZE: usize = 32;
+
+pub fn random_scalar() -> Vec<u8> {
+    // 创建一个随机数生成器
+    let mut rng: ThreadRng = rand::thread_rng();
+
+    // 生成一个随机的 Scalar
+    let scalar = Scalar::random(&mut rng);
+
+    // 将 Scalar 转换成 &[u8]
+    scalar.to_bytes().to_vec()
+}
+
+pub fn hash_to_curve(message: &[u8]) -> Vec<u8> {
+    let hash_scalar = Scalar::hash_from_bytes::<Sha512>(message).to_bytes();
+    let opt_point = match CompressedEdwardsY::from_slice(&hash_scalar) {
+        Ok(v) => v,
+        Err(_) => return Vec::new(),
+    };
+
+    return opt_point.to_bytes().to_vec();
+}
+
+pub fn point_scalar_multi(point: &[u8], scalar: &[u8]) -> Vec<u8> {
+    // 检查输入切片是否具有正确的大小
+    if point.len() != POINT_SIZE || scalar.len() != SCALAR_SIZE {
+        return Vec::new(); // 如果大小不正确，返回空的 Vec<u8>
+    }
+
+    // 将输入 &[u8] 转换成 CompressedEdwardsY 表示的点
+    let mut point_bytes = [0u8; POINT_SIZE];
+    point_bytes.copy_from_slice(point);
+    let compressed_point = match CompressedEdwardsY(point_bytes).decompress() {
+        Some(point) => point,
+        None => return Vec::new(), // 解析点失败，返回空的 Vec<u8>
+    };
+
+    // 将输入 &[u8] 转换成 Scalar
+    let mut scalar_bytes = [0u8; SCALAR_SIZE];
+    scalar_bytes.copy_from_slice(scalar);
+    let scalar = Scalar::from_bytes_mod_order(scalar_bytes);
+
+    // 执行点乘操作
+    let result_point = compressed_point * scalar;
+
+    // 将结果转换成压缩格式的点
+    let compressed_result = result_point.compress();
+
+    // 将结果转换成 &[u8]
+    compressed_result.as_bytes().to_vec()
+}

third_party/ecdh_psi/ffi_java_ecdh_psi/Cargo.toml → crypto/ecc/ffi_java_ecc_ed25519/Cargo.toml

@@ -1,14 +1,14 @@
 [package]
-name = "ffi_java_ecdh_psi"
+name = "ffi_java_ecc_ed25519"
 version = "0.1.0"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [lib]
-name = "ffi_java_ecdh_psi"
+name = "ffi_java_ecc_ed25519"
 crate-type = [ "cdylib", "staticlib" ]
 
 [dependencies]
 jni = "0.13.0"
-psi_utils = { path = "../psi_utils"}
+ecc_ed25519 = { path = "../ecc_ed25519"}

third_party/ecdh_psi/ffi_java_ecdh_psi/src/lib.rs → crypto/ecc/ffi_java_ecc_ed25519/src/lib.rs

@@ -1,7 +1,7 @@
 extern crate jni;
 
-use psi_utils::{
-    hash_to_curve, point_scalar_multi, random_scalar, scalar_inverse,
+use ecc_ed25519::{
+    hash_to_curve, point_scalar_multi, random_scalar,
 };
 
 use jni::{objects::JClass, sys::jbyteArray, JNIEnv};
@@ -45,28 +45,6 @@ pub extern "system" fn Java_com_webank_wedpr_crypto_NativeInterface_hashToCurve(
     }
 }
 
-#[no_mangle]
-pub extern "system" fn Java_com_webank_wedpr_crypto_NativeInterface_scalarInverse(
-    env: JNIEnv,
-    _class: JClass,
-    scalar: jbyteArray,
-) -> jbyteArray {
-    // 将 jbyteArray 转换成 Vec<u8>
-    let scalar_bytes = match env.convert_byte_array(scalar) {
-        Ok(bytes) => bytes,
-        Err(_) => return env.new_byte_array(0).unwrap(), /* 返回空的 jbyteArray */
-    };
-
-    // 调用原始函数
-    let result = scalar_inverse(&scalar_bytes);
-
-    // 将 Vec<u8> 转换成 jbyteArray 并返回给Java层
-    match env.byte_array_from_slice(&result) {
-        Ok(array) => array,
-        Err(_) => env.new_byte_array(0).unwrap(), // 返回空的 jbyteArray
-    }
-}
-
 #[no_mangle]
 pub extern "system" fn Java_com_webank_wedpr_crypto_NativeInterface_pointScalarMulti(
     env: JNIEnv,

third_party/ecdh_psi/ffi_wasm_ecdh_psi/Cargo.toml → crypto/ecc/ffi_wasm_ecc_ed25519/Cargo.toml

@@ -1,14 +1,14 @@
 [package]
-name = "ffi_wasm_ecdh_psi"
+name = "ffi_wasm_ecc_ed25519"
 version = "0.1.0"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [lib]
-name = "ffi_wasm_ecdh_psi"
+name = "ffi_wasm_ecc_ed25519"
 crate-type = ["rlib", "cdylib"]
 
 [dependencies]
 wasm-bindgen = "0.2"
 getrandom = { version = "0.2", features = ["js"] }
-psi_utils = { path = "../psi_utils"}
+ecc_ed25519 = { path = "../ecc_ed25519"}

third_party/ecdh_psi/ffi_wasm_ecdh_psi/src/lib.rs → crypto/ecc/ffi_wasm_ecc_ed25519/src/lib.rs

@@ -1,15 +1,10 @@
 extern crate wasm_bindgen;
 
-use psi_utils::{
-    hash_to_curve, point_scalar_multi, random_scalar, scalar_inverse,
+use ecc_ed25519::{
+    hash_to_curve, point_scalar_multi, random_scalar,
 };
 use wasm_bindgen::prelude::wasm_bindgen;
 
-#[wasm_bindgen]
-pub fn wasm_scalar_inverse(scalar: &[u8]) -> Vec<u8> {
-    scalar_inverse(scalar)
-}
-
 #[wasm_bindgen]
 pub fn wasm_point_scalar_multi(point: &[u8], scalar: &[u8]) -> Vec<u8> {
     point_scalar_multi(point, scalar)