diff --git a/solvable/src/webservice/crypto.py b/solvable/src/webservice/crypto.py
index ff050a4..8bd034b 100644
--- a/solvable/src/webservice/crypto.py
+++ b/solvable/src/webservice/crypto.py
@@ -3,17 +3,22 @@ from hashlib import scrypt
 
 
 class PasswordHasher:
-    @staticmethod
-    def hash(password):
-        salt = urandom(32)
-        return PasswordHasher.scrypt(password, salt).hex()+salt.hex()
+    n = 16384
+    r = 8
+    p = 1
+    dklen = 32
 
-    @staticmethod
-    def verify(password, salted_hash):
+    @classmethod
+    def hash(cls, password):
+        salt = urandom(32)
+        return cls.scrypt(password, salt).hex() + salt.hex()
+
+    @classmethod
+    def verify(cls, password, salted_hash):
         salt = bytes.fromhex(salted_hash)[32:]
         hashdigest = bytes.fromhex(salted_hash)[:32]
-        return PasswordHasher.scrypt(password, salt) == hashdigest
+        return cls.scrypt(password, salt) == hashdigest
 
-    @staticmethod
-    def scrypt(password, salt):
-        return scrypt(password.encode(), salt=salt, n=16384, r=8, p=1, dklen=32)
+    @classmethod
+    def scrypt(cls, password, salt):
+        return scrypt(password.encode(), salt=salt, n=cls.n, r=cls.r, p=cls.p, dklen=cls.dklen)