Update app.py

app.py

@@ -53,13 +53,13 @@ def rsa_encrypt_eth():
 
 
 def generate_keys1():
-    key = RSA.generate(2048)
-    private_key = key.export_key()
+    key = RSA.generate(1024)
+    private_key = key.export_key('PEM')
     file_out = open("private.pem", "wb")
     file_out.write(private_key)
     file_out.close()
     
-    public_key = key.publickey().export_key()
+    public_key = key.publickey().export_key('PEM')
     file_out = open("receiver.pem", "wb")
     file_out.write(public_key)
     file_out.close()