Éloïs
--- a/crypto/keys/mod.rs
+++ b/crypto/keys/mod.rs
+        serializer.serialize_str(&format!("{}", self))
+    }
+}
+
+impl PublicKey for PubKey {
+    type Signature = Sig;
+
+    fn from_base58(_base58_string: &str) -> Result<Self, BaseConvertionError> {
+        unimplemented!()
+    }
+    fn verify(&self, message: &[u8], signature: &Self::Signature) -> bool {
+        match *self {
+            PubKey::Ed25519(ed25519_pubkey) => if let Sig::Ed25519(ed25519_sig) = signature {
+                ed25519_pubkey.verify(message, ed25519_sig)
+            } else {
+                panic!("Try to verify a signature with public key of a different algorithm !\nSignature={:?}\nPublickey={:?}", signature, self)