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<title>List of supported algorithms — HACL* and EverCrypt Manual documentation</title><link rel="stylesheet" href="static/css/theme.css" type="text/css" />
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<div class="section" id="list-of-supported-algorithms">
<h1>List of supported algorithms<a class="headerlink" href="#list-of-supported-algorithms" title="Permalink to this headline">¶</a></h1>
<p>This table provides an overview of all the algorithms we currently support. This
only lists algorithms for which verification is complete. Please refer to
documentation for each individual API for the full details.</p>
<table border="1" class="docutils">
<colgroup>
<col width="24%" />
<col width="30%" />
<col width="33%" />
<col width="14%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">Algorithm</th>
<th class="head">Portable C
(HACL*)</th>
<th class="head">Intel ASM
(Vale)</th>
<th class="head">Agile API
(EverCrypt)</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td><strong>AEAD</strong></td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr class="row-odd"><td>AES-GCM</td>
<td> </td>
<td>✔︎ (AES-NI + CLMUL)</td>
<td>✔︎</td>
</tr>
<tr class="row-even"><td>Chacha20-Poly1305</td>
<td>✔︎ (+ 128-bit, 256-bit)</td>
<td> </td>
<td>✔︎</td>
</tr>
<tr class="row-odd"><td><strong>ECDH</strong></td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr class="row-even"><td>Curve25519</td>
<td>✔︎</td>
<td>✔︎ (BMI2 + ADX)</td>
<td> </td>
</tr>
<tr class="row-odd"><td>P-256</td>
<td>✔︎</td>
<td> </td>
<td> </td>
</tr>
<tr class="row-even"><td><strong>Signatures</strong></td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr class="row-odd"><td>Ed25519</td>
<td>✔︎</td>
<td> </td>
<td> </td>
</tr>
<tr class="row-even"><td>P-256</td>
<td>✔︎</td>
<td> </td>
<td> </td>
</tr>
<tr class="row-odd"><td><strong>Hashes</strong></td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr class="row-even"><td>MD5</td>
<td>✔︎</td>
<td> </td>
<td>✔︎</td>
</tr>
<tr class="row-odd"><td>SHA1</td>
<td>✔︎</td>
<td> </td>
<td>✔︎</td>
</tr>
<tr class="row-even"><td>SHA2-224,256</td>
<td>✔︎</td>
<td>✔︎ (SHAEXT)</td>
<td>✔︎</td>
</tr>
<tr class="row-odd"><td>SHA2-384,512</td>
<td>✔︎</td>
<td> </td>
<td>✔︎</td>
</tr>
<tr class="row-even"><td>SHA3</td>
<td>✔︎</td>
<td> </td>
<td> </td>
</tr>
<tr class="row-odd"><td>Blake2</td>
<td>✔︎ (+ 128-bit, 256-bit)</td>
<td> </td>
<td> </td>
</tr>
<tr class="row-even"><td><strong>Key Derivation</strong></td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr class="row-odd"><td>HKDF</td>
<td>✔︎</td>
<td>✔︎ (see notes below)</td>
<td>✔︎</td>
</tr>
<tr class="row-even"><td><strong>Ciphers</strong></td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr class="row-odd"><td>Chacha20</td>
<td>✔︎ (+ 128-bit, 256-bit)</td>
<td> </td>
<td> </td>
</tr>
<tr class="row-even"><td>AES-128,256</td>
<td> </td>
<td>✔︎ (AES-NI + CLMUL)</td>
<td> </td>
</tr>
<tr class="row-odd"><td><strong>MACS</strong></td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr class="row-even"><td>HMAC</td>
<td>✔︎</td>
<td>✔︎ (see notes below)</td>
<td>✔︎</td>
</tr>
<tr class="row-odd"><td>Poly1305</td>
<td>✔︎ (+ 128-bit, 256-bit)</td>
<td>✔︎ (X64)</td>
<td> </td>
</tr>
</tbody>
</table>
<p>Points of interest:</p>
<ul class="simple">
<li>Some C implementations also have verified vectorized versions using compiler
intrinsics (there is no inline assembly).
The 128-bit implementations are supported on Intel AVX, ARM Neon, and recent
Power8 and IBM Z platforms. The 256-bit implementations are supported on Intel AVX2.</li>
<li>MD5 and SHA1 are provided for legacy purposes and backwards-compatibility
(e.g. TLS applications); no particular effort has been made to make them
efficient</li>
<li>HMAC/HKDF only use ASM implementations if the underlying hash algorithm has
one</li>
</ul>
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