first commit

src/utils.py

@@ -0,0 +1,34 @@
+import hashlib
+import random
+import uuid
+
+ValidUsername = set(map(lambda x:chr(x), range(48, 58, 1))) | set(map(lambda x:chr(x), range(65, 91, 1))) | set(map(lambda x:chr(x), range(97, 123, 1)))
+ValidPassword = set(map(lambda x:chr(x), range(33, 127, 1)))
+
+def IsValidUsername(strl):
+    return (len(set(strl) - ValidUsername) == 0)
+
+def IsValidPassword(strl):
+    return (len(set(strl) - ValidPassword) == 0)
+
+def ComputePasswordHash(password):
+    s = hashlib.sha256()
+    s.update(password)
+    return s.hexdigest()
+
+def GenerateUUID():
+    return str(uuid.uuid1())
+
+def GenerateToken(username):
+    s = hashlib.sha256()
+    s.update(username)
+    s.update(str(GenerateSalt()))
+    return s.hexdigest()
+
+def GenerateSalt():
+    return random.randint(0, 6172748)
+
+def ComputePasswordHashWithSalt(passwordHashed, salt):
+    s = hashlib.sha256()
+    s.update(passwordHashed + str(salt))
+    return s.hexdigest()