<?xml version="1.0"?>
<block>
  <name>Decryption</name>
  <key>gsm_decryption</key>
  <import>import grgsm</import>
  <make>grgsm.decryption($k_c, $a5_version)</make>

  <param>
    <name>Kc session key</name>
    <key>k_c</key>
    <value>[0,0,0,0,0,0,0,0]</value>
    <type>int_vector</type>
  </param>

  <param>
    <name>A5 version</name>
    <key>a5_version</key>
    <value>1</value>
    <type>int</type>
  </param>

  <check>$a5_version &gt; 0</check>
  <check>$a5_version &lt; 5</check>

  <sink>
    <name>bursts</name>
    <type>message</type>
  </sink>
  <source>
    <name>bursts</name>
    <type>message</type>
  </source>

</block>