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xbot/include/openssl-3.2.1/html/man7/life_cycle-mac.html
Aaron Blakely 92900c71ed openssl works on windows
2024-03-13 06:50:58 -05:00

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<?xml version="1.0" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>life_cycle-mac</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<link rev="made" href="mailto:" />
</head>
<body>
<ul id="index">
<li><a href="#NAME">NAME</a></li>
<li><a href="#DESCRIPTION">DESCRIPTION</a>
<ul>
<li><a href="#State-Transition-Diagram">State Transition Diagram</a></li>
<li><a href="#Formal-State-Transitions">Formal State Transitions</a></li>
</ul>
</li>
<li><a href="#NOTES">NOTES</a></li>
<li><a href="#SEE-ALSO">SEE ALSO</a></li>
<li><a href="#HISTORY">HISTORY</a></li>
<li><a href="#COPYRIGHT">COPYRIGHT</a></li>
</ul>
<h1 id="NAME">NAME</h1>
<p>life_cycle-mac - The MAC algorithm life-cycle</p>
<h1 id="DESCRIPTION">DESCRIPTION</h1>
<p>All message authentication codes (MACs) go through a number of stages in their life-cycle:</p>
<dl>
<dt id="start">start</dt>
<dd>
<p>This state represents the MAC before it has been allocated. It is the starting state for any life-cycle transitions.</p>
</dd>
<dt id="newed">newed</dt>
<dd>
<p>This state represents the MAC after it has been allocated.</p>
</dd>
<dt id="initialised">initialised</dt>
<dd>
<p>This state represents the MAC when it is set up and capable of processing input.</p>
</dd>
<dt id="updated">updated</dt>
<dd>
<p>This state represents the MAC when it is set up and capable of processing additional input or generating output.</p>
</dd>
<dt id="finaled">finaled</dt>
<dd>
<p>This state represents the MAC when it has generated output.</p>
</dd>
<dt id="freed">freed</dt>
<dd>
<p>This state is entered when the MAC is freed. It is the terminal state for all life-cycle transitions.</p>
</dd>
</dl>
<h2 id="State-Transition-Diagram">State Transition Diagram</h2>
<p>The usual life-cycle of a MAC is illustrated:</p>
<img src="img/mac.png">
<h2 id="Formal-State-Transitions">Formal State Transitions</h2>
<p>This section defines all of the legal state transitions. This is the canonical list.</p>
<table style="border:1px solid; border-collapse:collapse">
<tr><th style="border:1px solid" align="left">Function Call</th>
<th style="border:1px solid" colspan="6">Current State</th></tr>
<tr><th style="border:1px solid"></th>
<th style="border:1px solid" align="center">start</th>
<th style="border:1px solid" align="center">newed</th>
<th style="border:1px solid" align="center">initialised</th>
<th style="border:1px solid" align="center">updated</th>
<th style="border:1px solid" align="center">finaled</th>
<th style="border:1px solid" align="center">freed</th></tr>
<tr><th style="border:1px solid" align="left">EVP_MAC_CTX_new</th>
<td style="border:1px solid" align="center">newed</td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td></tr>
<tr><th style="border:1px solid" align="left">EVP_MAC_init</th>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center">initialised</td>
<td style="border:1px solid" align="center">initialised</td>
<td style="border:1px solid" align="center">initialised</td>
<td style="border:1px solid" align="center">initialised</td>
<td style="border:1px solid" align="center"></td></tr>
<tr><th style="border:1px solid" align="left">EVP_MAC_update</th>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center">updated</td>
<td style="border:1px solid" align="center">updated</td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td></tr>
<tr><th style="border:1px solid" align="left">EVP_MAC_final</th>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center">finaled</td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td></tr>
<tr><th style="border:1px solid" align="left">EVP_MAC_finalXOF</th>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center">finaled</td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td></tr>
<tr><th style="border:1px solid" align="left">EVP_MAC_CTX_free</th>
<td style="border:1px solid" align="center">freed</td>
<td style="border:1px solid" align="center">freed</td>
<td style="border:1px solid" align="center">freed</td>
<td style="border:1px solid" align="center">freed</td>
<td style="border:1px solid" align="center">freed</td>
<td style="border:1px solid" align="center"></td></tr>
<tr><th style="border:1px solid" align="left">EVP_MAC_CTX_get_params</th>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center">newed</td>
<td style="border:1px solid" align="center">initialised</td>
<td style="border:1px solid" align="center">updated</td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td></tr>
<tr><th style="border:1px solid" align="left">EVP_MAC_CTX_set_params</th>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center">newed</td>
<td style="border:1px solid" align="center">initialised</td>
<td style="border:1px solid" align="center">updated</td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td></tr>
<tr><th style="border:1px solid" align="left">EVP_MAC_CTX_gettable_params</th>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center">newed</td>
<td style="border:1px solid" align="center">initialised</td>
<td style="border:1px solid" align="center">updated</td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td></tr>
<tr><th style="border:1px solid" align="left">EVP_MAC_CTX_settable_params</th>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center">newed</td>
<td style="border:1px solid" align="center">initialised</td>
<td style="border:1px solid" align="center">updated</td>
<td style="border:1px solid" align="center"></td>
<td style="border:1px solid" align="center"></td></tr>
</table>
<h1 id="NOTES">NOTES</h1>
<p>At some point the EVP layer will begin enforcing the transitions described herein.</p>
<h1 id="SEE-ALSO">SEE ALSO</h1>
<p><a href="../man7/provider-mac.html">provider-mac(7)</a>, <a href="../man3/EVP_MAC.html">EVP_MAC(3)</a>.</p>
<h1 id="HISTORY">HISTORY</h1>
<p>The provider MAC interface was introduced in OpenSSL 3.0.</p>
<h1 id="COPYRIGHT">COPYRIGHT</h1>
<p>Copyright 2021 The OpenSSL Project Authors. All Rights Reserved.</p>
<p>Licensed under the Apache License 2.0 (the &quot;License&quot;). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>
</body>
</html>
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