From f3637d20811bc1f24cbd610546d7a01799110790 Mon Sep 17 00:00:00 2001
From: timotheyca <tim@ongoteam.yaconnect.com>
Date: Wed, 5 Aug 2020 03:25:44 +0300
Subject: [PATCH] initial commit

---
 v25/messaging/encoding.py | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 v25/messaging/encoding.py

diff --git a/v25/messaging/encoding.py b/v25/messaging/encoding.py
new file mode 100644
index 0000000..0c31231
--- /dev/null
+++ b/v25/messaging/encoding.py
@@ -0,0 +1,21 @@
+from typing import Any, Optional
+
+import nacl.encoding
+import nacl.utils
+
+ENCODER = nacl.encoding.URLSafeBase64Encoder
+NONCE_SIZE = 32
+
+
+class Encoding:
+    @staticmethod
+    def encode(raw: Any) -> Optional[str]:
+        return None if raw is None else ENCODER.encode(bytes(raw)).decode('ascii')
+
+    @staticmethod
+    def decode(s: str) -> bytes:
+        return None if s is None else ENCODER.decode(s.encode('ascii'))
+
+    @classmethod
+    def nonce(cls):
+        return nacl.utils.random(NONCE_SIZE)