feat: optimize code

src/util_ecdh.rs

@@ -1,35 +0,0 @@
-use p256::ecdh::EphemeralSecret;
-use rand::rngs::OsRng;
-use rust_util::{opt_result, XResult};
-
-use p256::pkcs8::EncodePublicKey;
-use p256::{EncodedPoint, PublicKey};
-use p256::elliptic_curve::sec1::FromEncodedPoint;
-// use p256::elliptic_curve::sec1::{FromEncodedPoint, ToEncodedPoint};
-
-// #[derive(Debug)]
-// pub struct EphemeralKeyBytes(EncodedPoint);
-//
-// impl EphemeralKeyBytes {
-//     pub fn from_public_key(epk: &PublicKey) -> Self {
-//         EphemeralKeyBytes(epk.to_encoded_point(true))
-//     }
-//
-//     pub fn decompress(&self) -> EncodedPoint {
-//         // EphemeralKeyBytes is a valid compressed encoding by construction.
-//         let p = PublicKey::from_encoded_point(&self.0).unwrap();
-//         p.to_encoded_point(false)
-//     }
-// }
-
-pub fn compute_shared_secret(public_key_point_hex: &str) -> XResult<(Vec<u8>, Vec<u8>)> {
-    let public_key_point_bytes = opt_result!(hex::decode(public_key_point_hex), "Parse public key point hex failed: {}");
-    let encoded_point = opt_result!(EncodedPoint::from_bytes(public_key_point_bytes), "Parse public key point failed: {}");
-    let public_key = PublicKey::from_encoded_point(&encoded_point).unwrap();
-
-    let esk = EphemeralSecret::random(&mut OsRng);
-    let epk = esk.public_key();
-    let shared_secret = esk.diffie_hellman(&public_key);
-    let epk_public_key_der = opt_result!(epk.to_public_key_der(), "Convert epk to SPKI failed: {}");
-    Ok((shared_secret.raw_secret_bytes().as_slice().to_vec(), epk_public_key_der.to_vec()))
-}