Update app.py

app.py

@@ -1,7 +1,41 @@
 import gradio as gr
+from datetime import datetime
+import random
+import math
+import base64
+import hashlib
+from Crypto import Random
+from Crypto.Cipher import AES
+import rsa
+import string
+
+
+
 
 def greet(name):
     return "Hello " + name + "!!"
 
 iface = gr.Interface(fn=greet, inputs="text", outputs="text")
-iface.launch()
+iface.launch()
+
+
+
+class AESCipher(object):
+    def __init__(self, key):
+        self.bs = AES.block_size
+        self.key = hashlib.sha256(key.encode()).digest()
+    def encrypt(self, raw):
+        raw = self._pad(raw)
+        iv = Random.new().read(AES.block_size)
+        cipher = AES.new(self.key, AES.MODE_CBC, iv)
+        return base64.b64encode(iv + cipher.encrypt(raw.encode()))
+    def decrypt(self, enc):
+        enc = base64.b64decode(enc)
+        iv = enc[:AES.block_size]
+        cipher = AES.new(self.key, AES.MODE_CBC, iv)
+        return AESCipher._unpad(cipher.decrypt(enc[AES.block_size:])).decode('utf-8')
+    def _pad(self, s):
+        return s + (self.bs - len(s) % self.bs) * chr(self.bs - len(s) % self.bs)
+    @staticmethod
+    def _unpad(s):
+        return s[:-ord(s[len(s)-1:])]