diff --git a/4sem/isaip/02/RSA/rsaNk.ipynb b/4sem/isaip/02/RSA/rsaNk.ipynb
index 561743e..8c54f03 100644
--- a/4sem/isaip/02/RSA/rsaNk.ipynb
+++ b/4sem/isaip/02/RSA/rsaNk.ipynb
@@ -6,7 +6,7 @@
       "name": "rsaNk.ipynb",
       "provenance": [],
       "collapsed_sections": [],
-      "authorship_tag": "ABX9TyNwOFNsjAv2wzqEX4neiNx2",
+      "authorship_tag": "ABX9TyNs17sm1WEvHs2dGv38ySe7",
       "include_colab_link": true
     },
     "kernelspec": {
@@ -246,11 +246,14 @@
         "outputId": "0555f9a9-d86a-4063-fed7-1ae8da28b2e8"
       },
       "source": [
-        "message = \"sosait\"\n",
-        "encrypted_message = encrypt(message, e, n)\n",
-        "decrypted_message = decrypt(encrypted_message, d, n)\n",
-        "\n",
-        "print(message, \"Encrypted message will be really long\", decrypted_message, sep=\"\\n\")"
+        "messages = [\n",
+        "    \"sosait\", \"test\", \"somewhat long message\", \"really long message repeated 10 times \"*10\n",
+        "]\n",
+        "for message in messages:\n",
+        "    encrypted_message = encrypt(message, e, n)\n",
+        "    decrypted_message = decrypt(encrypted_message, d, n)\n",
+        "    \n",
+        "    assert message == decrypted_message, \"Cypher error!\""
       ],
       "execution_count": null,
       "outputs": [