Unifomize license headers

photo21/hashers.py

@@ -1,3 +1,7 @@
+# This file is part of photo21
+# Copyright (C) 2022  Amicale des élèves de l'ENS Paris-Saclay
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 import hashlib
 import base64
 from collections import OrderedDict
@@ -15,11 +19,12 @@ class SHA512PasswordHasher(BasePasswordHasher):
     It is used to migrate passwords from old Symfony2 photos server.
     https://github.com/symfony/symfony/blob/2.8/src/Symfony/Component/Security/Core/Encoder/MessageDigestPasswordEncoder.php
     """
+
     algorithm = "sha512"
 
     def encode(self, password, iteration, salt):
         assert password is not None
-        assert salt and '$' not in salt
+        assert salt and "$" not in salt
         salted = force_bytes(password + "{" + salt + "}")
         digest = hashlib.sha512(salted).digest()
         # "stretch" hash
@@ -30,19 +35,21 @@ class SHA512PasswordHasher(BasePasswordHasher):
         return encoded[:128]
 
     def verify(self, password, encoded):
-        algorithm, iteration, salt, hash = encoded.split('$', 3)
+        algorithm, iteration, salt, hash = encoded.split("$", 3)
         assert algorithm == self.algorithm
         encoded_2 = self.encode(password, iteration, salt)
         return constant_time_compare(encoded, encoded_2)
 
     def safe_summary(self, encoded):
-        algorithm, iteration, salt, hash = encoded.split('$', 3)
+        algorithm, iteration, salt, hash = encoded.split("$", 3)
         assert algorithm == self.algorithm
-        return OrderedDict([
-            (_('algorithm'), algorithm),
-            (_('salt'), mask_hash(salt, show=2)),
-            (_('hash'), mask_hash(hash)),
-        ])
+        return OrderedDict(
+            [
+                (_("algorithm"), algorithm),
+                (_("salt"), mask_hash(salt, show=2)),
+                (_("hash"), mask_hash(hash)),
+            ]
+        )
 
     def harden_runtime(self, password, encoded):
         pass