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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Appendix G. Cryptographic software and export control</title><link rel="stylesheet" href="docbook.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="PowerDNS manual" /><link rel="up" href="index.html" title="PowerDNS manual" /><link rel="prev" href="further-copyrights.html" title="Appendix F. Further copyright statements" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix G. Cryptographic software and export control</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="further-copyrights.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> </td></tr></table><hr /></div><div class="appendix" title="Appendix G. Cryptographic software and export control"><div class="titlepage"><div><div><h2 class="title"><a id="cryptographic-notes-eccn"></a>Appendix G. Cryptographic software and export control</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="cryptographic-notes-eccn.html#idp10506800">1. Specific United States Export Control Notes</a></span></dt></dl></div><p>
In certain legal climates, PowerDNS might potentially require an export control status, particularly
since PowerDNS software contains cryptographic primitives.
</p><p>
PowerDNS does not itself implement any cryptographic algorithms but relies on third party implementations
of AES, RSA, ECDSA, GOST, MD5 and various SHA-based hashing algorithms.
</p><p>
For AES, we rely on Brian Gladman's code, as outlined in <a class="xref" href="further-copyrights.html" title="Appendix F. Further copyright statements">Appendix F, <i>Further copyright statements</i></a>. Furthermore,
RSA, MD5 and the SHA-based algorithms are supplied as a copy of <a class="ulink" href="http://www.polarssl.org" target="_top">PolarSSL</a>.
</p><p>
Optionally, PowerDNS can link in a copy of the open source <a class="ulink" href="http://botan.randombits.org" target="_top">Botan cryptographic</a> library.
</p><p>
Optionally, PowerDNS can link in a copy of the open source <a class="ulink" href="http://www.cryptopp.com" target="_top">Crypto++</a> library.
</p><div class="sect1" title="1. Specific United States Export Control Notes"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="idp10506800"></a>1. Specific United States Export Control Notes</h2></div></div></div><p>
PowerDNS is not "US Origin" software. For re-export, like most open source, publicly available "mass market" projects, PowerDNS is
considered to be governed by section 740.13(e) of the US EAR, "Unrestricted encryption source code", under which PowerDNS source code
would be considered re-exportable from the US without an export license under License Exception TSU (Technology and Software - Unrestricted).
</p><p>
Like most open source projects containing some encryption, the ECCN that best fits PowerDNS software is 5D002.
</p><p>
The official link to the publicly available source code is <a class="ulink" href="http://downloads.powerdns.com/releases/" target="_top">http://downloads.powerdns.com/releases</a>.
</p><p>
If absolute certainty is required, we recommend consulting an expert in US Export Control, or asking the BIS for confirmation.
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