From 1a9cabbbf008ad919294d815ade3e44cb96c441d Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@osmocom.org>
Date: Sun, 9 Jun 2024 16:15:28 +0200
Subject: [PATCH] pySim/ota: Don't modify input argument in
 OtaDialectSms.encode_cmd

Change-Id: I4c4c44002762696b931ed3580ffe54daf62ffa61
---
 pySim/ota.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pySim/ota.py b/pySim/ota.py
index 10de6116..54e8f75f 100644
--- a/pySim/ota.py
+++ b/pySim/ota.py
@@ -332,6 +332,7 @@ class OtaDialectSms(OtaDialect):
             len_cipher = 6 + len_sig + len(apdu)
             padding = otak.crypt._get_padding(len_cipher, otak.crypt.blocksize)
             pad_cnt = len(padding)
+            apdu = bytes(apdu) # make a copy so we don't modify the input data
             apdu += padding
 
         kic = {'key': otak.kic_idx, 'algo': otak.algo_crypt}