init

alice.py

@@ -0,0 +1,30 @@
+from Crypto.Cipher import AES
+from Crypto.Util.Padding import pad
+from Crypto.Random import get_random_bytes
+
+
+# Generate new secret key
+with open('key', 'wb') as f:
+    f.write(get_random_bytes(16))
+
+plaintext = input("Please input the message: ")
+
+# Pad plaintext
+plaintext = plaintext.encode()
+
+plaintext = pad(plaintext, 16)
+
+# Read Key
+with open('key', 'rb') as f:
+    aes_key = f.read()
+
+# Encrypt and send (write) message
+cipher = AES.new(aes_key, AES.MODE_CBC)
+
+ciphertext = cipher.encrypt(plaintext)
+
+with open('ctext', 'wb') as f:
+    f.write(ciphertext)
+
+
+