listener event

app/utils/fs_utils.py

@@ -0,0 +1,34 @@
+import hashlib
+import base64
+from Crypto.Cipher import AES
+
+
+class AESCipher(object):
+    def __init__(self, key):
+        self.bs = AES.block_size
+        self.key = hashlib.sha256(AESCipher.str_to_bytes(key)).digest()
+
+    @staticmethod
+    def str_to_bytes(data):
+        u_type = type(b"".decode("utf8"))
+        if isinstance(data, u_type):
+            return data.encode("utf8")
+        return data
+
+    @staticmethod
+    def _unpad(s):
+        return s[: -ord(s[len(s) - 1 :])]
+
+    def decrypt(self, enc):
+        iv = enc[: AES.block_size]
+        cipher = AES.new(self.key, AES.MODE_CBC, iv)
+        return self._unpad(cipher.decrypt(enc[AES.block_size :]))
+
+    def decrypt_string(self, enc):
+        enc = base64.b64decode(enc)
+        return self.decrypt(enc).decode("utf8")
+
+if __name__ == "__main__":
+    encrypt = "P37w+VZImNgPEO1RBhJ6RtKl7n6zymIbEG1pReEzghk="
+    cipher = AESCipher("test key")
+    print("明文:\n{}".format(cipher.decrypt_string(encrypt)))