==== ISDB_download_protection_descriptor

Defined by ARIB in <<ARIB-B61>>.

[source,xml]
----
<ISDB_download_protection_descriptor
    DL_system_ID="uint8, required"
    PID="uint13, required"
    encrypt_protocol_number="uint8, required">

  <encrypt_info>
    Hexadecimal content
  </encrypt_info>

</ISDB_download_protection_descriptor>
----
