diff --git a/__crypto/curve25519/src/main.rs b/__crypto/curve25519/src/main.rs
index 39650ab..022bd6b 100644
--- a/__crypto/curve25519/src/main.rs
+++ b/__crypto/curve25519/src/main.rs
@@ -1,7 +1,7 @@
 use std::convert::TryInto;
-use bech32::{ToBase32, Variant};
 
-use ed25519_dalek::{Keypair, Signer, Verifier};
+use bech32::{ToBase32, Variant};
+use ed25519_dalek::{Keypair, PublicKey as EdPublicKey, Signature, Signer, Verifier};
 use rand::rngs::OsRng;
 use x25519_dalek::{EphemeralSecret, PublicKey};
 
@@ -50,4 +50,15 @@ fn main() {
     println!("New public key: {}", hex::encode(new_public.as_bytes()));
     let new_card_shared_secret = new_secret.diffie_hellman(&public_key_card);
     println!("New&card shared secret: {}", hex::encode(new_card_shared_secret.as_bytes()));
+
+    println!("{}", "-".repeat(88));
+    let public_key_bytes = hex::decode("d57a081448c6d3d6076b1cca0216f319e45cc2ad986541caf0d3d62f5b318263").unwrap();
+    // let public_key_bytes: [u8; 32] = public_key_bytes.try_into().unwrap();
+    let public_key_card = EdPublicKey::from_bytes(&public_key_bytes).unwrap();
+    let message = hex::decode("1dc91001cb69b0dbfab0347d684d7551227484f57a5ac414680414b855051159").unwrap();
+    let signature = hex::decode("4b2355918b92ca8e5490a30775aa4603a76efe344e3eecfd888b10018a5cb86d3d7095c298b34b39c4e1d46841098dd2514101a9eba5b7a271cf9b5c9d078306").unwrap();
+    let signature_bytes: [u8; 64] = signature.try_into().unwrap();
+    let signature = Signature::new(signature_bytes);
+    let verify_result = public_key_card.verify(&message, &signature);
+    println!("Verify result: {:?}", verify_result);
 }