sunnypilot v2026.002.000

version: sunnypilot v2026.002.000 (staging)
date: 2026-07-21T07:44:02
master commit: 2c334ede443d7391d27575af8c854a095ba702a8

openpilot/sunnypilot/sunnylink/backups/AESCipher.py

@@ -0,0 +1,34 @@
+"""
+Copyright (c) 2021-, Haibin Wen, sunnypilot, and a number of other contributors.
+
+This file is part of sunnypilot and is licensed under the MIT License.
+See the LICENSE.md file in the root directory for more details.
+"""
+
+from Crypto.Cipher import AES
+
+
+class AESCipher:
+  def __init__(self, key: bytes, iv: bytes):
+    if len(key) not in (16, 32):
+      raise ValueError("Key must be 16 bytes (AES-128) or 32 bytes (AES-256).")
+    if len(iv) != 16:
+      raise ValueError("IV must be 16 bytes.")
+
+    self.key = key
+    self.iv = iv
+
+  def encrypt(self, data: bytes) -> bytes:
+    block_size = 16
+    padding_length = block_size - (len(data) % block_size)
+    padding = bytes([padding_length]) * padding_length
+    padded_data = data + padding
+
+    cipher = AES.new(self.key, AES.MODE_CBC, self.iv)
+    return cipher.encrypt(padded_data)
+
+  def decrypt(self, encrypted_data: bytes) -> bytes:
+    cipher = AES.new(self.key, AES.MODE_CBC, self.iv)
+    decrypted_data = cipher.decrypt(encrypted_data)
+    padding_length = decrypted_data[-1]
+    return decrypted_data[:-padding_length]