diff --git a/utils/crypto/elliptic_curve.py b/utils/crypto/elliptic_curve.py
index 5cdbef3..dbf396c 100644
--- a/utils/crypto/elliptic_curve.py
+++ b/utils/crypto/elliptic_curve.py
@@ -1,7 +1,9 @@
 import hashlib
+
+from cryptography.hazmat.backends import default_backend
 from cryptography.hazmat.primitives import serialization
 from cryptography.hazmat.primitives.asymmetric import ec
-from cryptography.hazmat.backends import default_backend
+
 
 class EllipticCurve:
     def __init__(self):
@@ -14,12 +16,19 @@ def generate_key_pair(self):
         return private_key, public_key
 
     def sign(self, private_key, message):
-        signer = private_key.signer(padding=ec.ECDSA(max_size=32).padding, algorithm=ec.ECDSA(hash_func=hashlib.sha256))
+        signer = private_key.signer(
+            padding=ec.ECDSA(max_size=32).padding,
+            algorithm=ec.ECDSA(hash_func=hashlib.sha256),
+        )
         signature = signer.sign(message.encode())
         return signature
 
     def verify(self, public_key, message, signature):
-        verifier = public_key.verifier(signature, padding=ec.ECDSA(max_size=32).padding, algorithm=ec.ECDSA(hash_func=hashlib.sha256))
+        verifier = public_key.verifier(
+            signature,
+            padding=ec.ECDSA(max_size=32).padding,
+            algorithm=ec.ECDSA(hash_func=hashlib.sha256),
+        )
         try:
             verifier.verify(message.encode())
             return True