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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.13"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>Apache Portable Runtime Utility Library: apr_siphash.h File Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="search/search.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="search/searchdata.js"></script> <script type="text/javascript" src="search/search.js"></script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td id="projectalign" style="padding-left: 0.5em;"> <div id="projectname">Apache Portable Runtime Utility Library </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.13 --> <script type="text/javascript"> var searchBox = new SearchBox("searchBox", "search",false,'Search'); </script> <script type="text/javascript" src="menudata.js"></script> <script type="text/javascript" src="menu.js"></script> <script type="text/javascript"> $(function() { initMenu('',true,false,'search.php','Search'); $(document).ready(function() { init_search(); }); }); </script> <div id="main-nav"></div> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> </div> <!-- iframe showing the search results (closed by default) --> <div id="MSearchResultsWindow"> <iframe src="javascript:void(0)" frameborder="0" name="MSearchResults" id="MSearchResults"> </iframe> </div> <div id="nav-path" class="navpath"> <ul> <li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li> </ul> </div> </div><!-- top --> <div class="header"> <div class="summary"> <a href="#define-members">Macros</a> | <a href="#func-members">Functions</a> </div> <div class="headertitle"> <div class="title">apr_siphash.h File Reference</div> </div> </div><!--header--> <div class="contents"> <p>APR-UTIL siphash library "SipHash-c-d is a family of pseudorandom functions (a.k.a. keyed hash functions) optimized for speed on short messages", designed by Jean-Philippe Aumasson and Daniel J. Bernstein. It generates a 64bit hash (or MAC) from the message and a 128bit key. See <a href="http://cr.yp.to/siphash/siphash-20120620.pdf">http://cr.yp.to/siphash/siphash-20120620.pdf</a> for the details, c is the number of compression rounds, d the number of finalization rounds; we also define fast implementations for c = 2 with d = 4 (aka siphash-2-4), and c = 4 with d = 8 (aka siphash-4-8), as recommended parameters per the authors. <a href="#details">More...</a></p> <div class="textblock"><code>#include "apr.h"</code><br /> <code>#include "apu.h"</code><br /> </div><div class="textblock"><div class="dynheader"> Include dependency graph for apr_siphash.h:</div> <div class="dyncontent"> <div class="center"><img src="apr__siphash_8h__incl.png" border="0" usemap="#apr__siphash_8h" alt=""/></div> <!-- MAP 0 --> </div> </div> <p><a href="apr__siphash_8h_source.html">Go to the source code of this file.</a></p> <table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a> Macros</h2></td></tr> <tr class="memitem:a38fd9e25fc9245e72f93a320b43f175f"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="apr__siphash_8h.html#a38fd9e25fc9245e72f93a320b43f175f">APR_SIPHASH_DSIZE</a>   8</td></tr> <tr class="separator:a38fd9e25fc9245e72f93a320b43f175f"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ac4b06c5a46c1f72a42c822de272ecfc3"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="apr__siphash_8h.html#ac4b06c5a46c1f72a42c822de272ecfc3">APR_SIPHASH_KSIZE</a>   16</td></tr> <tr class="separator:ac4b06c5a46c1f72a42c822de272ecfc3"><td class="memSeparator" colspan="2"> </td></tr> </table><table class="memberdecls"> <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a> Functions</h2></td></tr> <tr class="memitem:a48a436589e140465c51c97b7532bbcaa"><td class="memItemLeft" align="right" valign="top">apr_uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="apr__siphash_8h.html#a48a436589e140465c51c97b7532bbcaa">apr_siphash</a> (const void *src, apr_size_t len, const unsigned char key[<a class="el" href="apr__siphash_8h.html#ac4b06c5a46c1f72a42c822de272ecfc3">APR_SIPHASH_KSIZE</a>], unsigned int c, unsigned int d)</td></tr> <tr class="memdesc:a48a436589e140465c51c97b7532bbcaa"><td class="mdescLeft"> </td><td class="mdescRight">Computes SipHash-c-d, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key. <a href="#a48a436589e140465c51c97b7532bbcaa">More...</a><br /></td></tr> <tr class="separator:a48a436589e140465c51c97b7532bbcaa"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:affc487c88dd5c6123ff03e43e797644b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="apr__siphash_8h.html#affc487c88dd5c6123ff03e43e797644b">apr_siphash_auth</a> (unsigned char out[<a class="el" href="apr__siphash_8h.html#a38fd9e25fc9245e72f93a320b43f175f">APR_SIPHASH_DSIZE</a>], const void *src, apr_size_t len, const unsigned char key[<a class="el" href="apr__siphash_8h.html#ac4b06c5a46c1f72a42c822de272ecfc3">APR_SIPHASH_KSIZE</a>], unsigned int c, unsigned int d)</td></tr> <tr class="memdesc:affc487c88dd5c6123ff03e43e797644b"><td class="mdescLeft"> </td><td class="mdescRight">Computes SipHash-c-d, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key, into a possibly unaligned buffer (using the little endian representation as defined by the authors for interoperabilty) usable as a MAC. <a href="#affc487c88dd5c6123ff03e43e797644b">More...</a><br /></td></tr> <tr class="separator:affc487c88dd5c6123ff03e43e797644b"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:ad6b9383f82cf1c43a67774aec08b88ae"><td class="memItemLeft" align="right" valign="top">apr_uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="apr__siphash_8h.html#ad6b9383f82cf1c43a67774aec08b88ae">apr_siphash24</a> (const void *src, apr_size_t len, const unsigned char key[<a class="el" href="apr__siphash_8h.html#ac4b06c5a46c1f72a42c822de272ecfc3">APR_SIPHASH_KSIZE</a>])</td></tr> <tr class="memdesc:ad6b9383f82cf1c43a67774aec08b88ae"><td class="mdescLeft"> </td><td class="mdescRight">Computes SipHash-2-4, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key. <a href="#ad6b9383f82cf1c43a67774aec08b88ae">More...</a><br /></td></tr> <tr class="separator:ad6b9383f82cf1c43a67774aec08b88ae"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a2246ecf996f299fd1fb16b0a835b41a4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="apr__siphash_8h.html#a2246ecf996f299fd1fb16b0a835b41a4">apr_siphash24_auth</a> (unsigned char out[<a class="el" href="apr__siphash_8h.html#a38fd9e25fc9245e72f93a320b43f175f">APR_SIPHASH_DSIZE</a>], const void *src, apr_size_t len, const unsigned char key[<a class="el" href="apr__siphash_8h.html#ac4b06c5a46c1f72a42c822de272ecfc3">APR_SIPHASH_KSIZE</a>])</td></tr> <tr class="memdesc:a2246ecf996f299fd1fb16b0a835b41a4"><td class="mdescLeft"> </td><td class="mdescRight">Computes SipHash-2-4, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key, into a possibly unaligned buffer (using the little endian representation as defined by the authors for interoperabilty) usable as a MAC. <a href="#a2246ecf996f299fd1fb16b0a835b41a4">More...</a><br /></td></tr> <tr class="separator:a2246ecf996f299fd1fb16b0a835b41a4"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:abb7392add9bc947e8b714d2597ca2bf8"><td class="memItemLeft" align="right" valign="top">apr_uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="apr__siphash_8h.html#abb7392add9bc947e8b714d2597ca2bf8">apr_siphash48</a> (const void *src, apr_size_t len, const unsigned char key[<a class="el" href="apr__siphash_8h.html#ac4b06c5a46c1f72a42c822de272ecfc3">APR_SIPHASH_KSIZE</a>])</td></tr> <tr class="memdesc:abb7392add9bc947e8b714d2597ca2bf8"><td class="mdescLeft"> </td><td class="mdescRight">Computes SipHash-4-8, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key. <a href="#abb7392add9bc947e8b714d2597ca2bf8">More...</a><br /></td></tr> <tr class="separator:abb7392add9bc947e8b714d2597ca2bf8"><td class="memSeparator" colspan="2"> </td></tr> <tr class="memitem:a6ca3000e7f1b692a7845f78c4ce20004"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="apr__siphash_8h.html#a6ca3000e7f1b692a7845f78c4ce20004">apr_siphash48_auth</a> (unsigned char out[<a class="el" href="apr__siphash_8h.html#a38fd9e25fc9245e72f93a320b43f175f">APR_SIPHASH_DSIZE</a>], const void *src, apr_size_t len, const unsigned char key[<a class="el" href="apr__siphash_8h.html#ac4b06c5a46c1f72a42c822de272ecfc3">APR_SIPHASH_KSIZE</a>])</td></tr> <tr class="memdesc:a6ca3000e7f1b692a7845f78c4ce20004"><td class="mdescLeft"> </td><td class="mdescRight">Computes SipHash-4-8, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key, into a possibly unaligned buffer (using the little endian representation as defined by the authors for interoperabilty) usable as a MAC. <a href="#a6ca3000e7f1b692a7845f78c4ce20004">More...</a><br /></td></tr> <tr class="separator:a6ca3000e7f1b692a7845f78c4ce20004"><td class="memSeparator" colspan="2"> </td></tr> </table> <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> <div class="textblock"><p>APR-UTIL siphash library "SipHash-c-d is a family of pseudorandom functions (a.k.a. keyed hash functions) optimized for speed on short messages", designed by Jean-Philippe Aumasson and Daniel J. Bernstein. It generates a 64bit hash (or MAC) from the message and a 128bit key. See <a href="http://cr.yp.to/siphash/siphash-20120620.pdf">http://cr.yp.to/siphash/siphash-20120620.pdf</a> for the details, c is the number of compression rounds, d the number of finalization rounds; we also define fast implementations for c = 2 with d = 4 (aka siphash-2-4), and c = 4 with d = 8 (aka siphash-4-8), as recommended parameters per the authors. </p> </div><h2 class="groupheader">Macro Definition Documentation</h2> <a id="a38fd9e25fc9245e72f93a320b43f175f"></a> <h2 class="memtitle"><span class="permalink"><a href="#a38fd9e25fc9245e72f93a320b43f175f">◆ </a></span>APR_SIPHASH_DSIZE</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define APR_SIPHASH_DSIZE   8</td> </tr> </table> </div><div class="memdoc"> <p>size of the siphash digest </p> </div> </div> <a id="ac4b06c5a46c1f72a42c822de272ecfc3"></a> <h2 class="memtitle"><span class="permalink"><a href="#ac4b06c5a46c1f72a42c822de272ecfc3">◆ </a></span>APR_SIPHASH_KSIZE</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define APR_SIPHASH_KSIZE   16</td> </tr> </table> </div><div class="memdoc"> <p>size of the siphash key </p> </div> </div> <h2 class="groupheader">Function Documentation</h2> <a id="a48a436589e140465c51c97b7532bbcaa"></a> <h2 class="memtitle"><span class="permalink"><a href="#a48a436589e140465c51c97b7532bbcaa">◆ </a></span>apr_siphash()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint64_t apr_siphash </td> <td>(</td> <td class="paramtype">const void * </td> <td class="paramname"><em>src</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_size_t </td> <td class="paramname"><em>len</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const unsigned char </td> <td class="paramname"><em>key</em>[APR_SIPHASH_KSIZE], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int </td> <td class="paramname"><em>c</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int </td> <td class="paramname"><em>d</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Computes SipHash-c-d, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">src</td><td>The message </td></tr> <tr><td class="paramname">len</td><td>The length of the message </td></tr> <tr><td class="paramname">key</td><td>The secret key </td></tr> <tr><td class="paramname">c</td><td>The number of compression rounds </td></tr> <tr><td class="paramname">d</td><td>The number of finalization rounds </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>The hash value as a 64bit unsigned integer </dd></dl> </div> </div> <a id="ad6b9383f82cf1c43a67774aec08b88ae"></a> <h2 class="memtitle"><span class="permalink"><a href="#ad6b9383f82cf1c43a67774aec08b88ae">◆ </a></span>apr_siphash24()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint64_t apr_siphash24 </td> <td>(</td> <td class="paramtype">const void * </td> <td class="paramname"><em>src</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_size_t </td> <td class="paramname"><em>len</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const unsigned char </td> <td class="paramname"><em>key</em>[APR_SIPHASH_KSIZE] </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Computes SipHash-2-4, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">src</td><td>The message to hash </td></tr> <tr><td class="paramname">len</td><td>The length of the message </td></tr> <tr><td class="paramname">key</td><td>The secret key </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>The hash value as a 64bit unsigned integer </dd></dl> </div> </div> <a id="a2246ecf996f299fd1fb16b0a835b41a4"></a> <h2 class="memtitle"><span class="permalink"><a href="#a2246ecf996f299fd1fb16b0a835b41a4">◆ </a></span>apr_siphash24_auth()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void apr_siphash24_auth </td> <td>(</td> <td class="paramtype">unsigned char </td> <td class="paramname"><em>out</em>[APR_SIPHASH_DSIZE], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const void * </td> <td class="paramname"><em>src</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_size_t </td> <td class="paramname"><em>len</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const unsigned char </td> <td class="paramname"><em>key</em>[APR_SIPHASH_KSIZE] </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Computes SipHash-2-4, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key, into a possibly unaligned buffer (using the little endian representation as defined by the authors for interoperabilty) usable as a MAC. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">out</td><td>The output buffer (or MAC) </td></tr> <tr><td class="paramname">src</td><td>The message </td></tr> <tr><td class="paramname">len</td><td>The length of the message </td></tr> <tr><td class="paramname">key</td><td>The secret key </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>The hash value as a 64bit unsigned integer </dd></dl> </div> </div> <a id="abb7392add9bc947e8b714d2597ca2bf8"></a> <h2 class="memtitle"><span class="permalink"><a href="#abb7392add9bc947e8b714d2597ca2bf8">◆ </a></span>apr_siphash48()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">apr_uint64_t apr_siphash48 </td> <td>(</td> <td class="paramtype">const void * </td> <td class="paramname"><em>src</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_size_t </td> <td class="paramname"><em>len</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const unsigned char </td> <td class="paramname"><em>key</em>[APR_SIPHASH_KSIZE] </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Computes SipHash-4-8, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">src</td><td>The message </td></tr> <tr><td class="paramname">len</td><td>The length of the message </td></tr> <tr><td class="paramname">key</td><td>The secret key </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>The hash value as a 64bit unsigned integer </dd></dl> </div> </div> <a id="a6ca3000e7f1b692a7845f78c4ce20004"></a> <h2 class="memtitle"><span class="permalink"><a href="#a6ca3000e7f1b692a7845f78c4ce20004">◆ </a></span>apr_siphash48_auth()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void apr_siphash48_auth </td> <td>(</td> <td class="paramtype">unsigned char </td> <td class="paramname"><em>out</em>[APR_SIPHASH_DSIZE], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const void * </td> <td class="paramname"><em>src</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_size_t </td> <td class="paramname"><em>len</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const unsigned char </td> <td class="paramname"><em>key</em>[APR_SIPHASH_KSIZE] </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Computes SipHash-4-8, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key, into a possibly unaligned buffer (using the little endian representation as defined by the authors for interoperabilty) usable as a MAC. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">out</td><td>The output buffer (or MAC) </td></tr> <tr><td class="paramname">src</td><td>The message </td></tr> <tr><td class="paramname">len</td><td>The length of the message </td></tr> <tr><td class="paramname">key</td><td>The secret key </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>The hash value as a 64bit unsigned integer </dd></dl> </div> </div> <a id="affc487c88dd5c6123ff03e43e797644b"></a> <h2 class="memtitle"><span class="permalink"><a href="#affc487c88dd5c6123ff03e43e797644b">◆ </a></span>apr_siphash_auth()</h2> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void apr_siphash_auth </td> <td>(</td> <td class="paramtype">unsigned char </td> <td class="paramname"><em>out</em>[APR_SIPHASH_DSIZE], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const void * </td> <td class="paramname"><em>src</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">apr_size_t </td> <td class="paramname"><em>len</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const unsigned char </td> <td class="paramname"><em>key</em>[APR_SIPHASH_KSIZE], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int </td> <td class="paramname"><em>c</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">unsigned int </td> <td class="paramname"><em>d</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div><div class="memdoc"> <p>Computes SipHash-c-d, producing a 64bit (APR_SIPHASH_DSIZE) hash from a message and a 128bit (APR_SIPHASH_KSIZE) secret key, into a possibly unaligned buffer (using the little endian representation as defined by the authors for interoperabilty) usable as a MAC. </p> <dl class="params"><dt>Parameters</dt><dd> <table class="params"> <tr><td class="paramname">out</td><td>The output buffer (or MAC) </td></tr> <tr><td class="paramname">src</td><td>The message </td></tr> <tr><td class="paramname">len</td><td>The length of the message </td></tr> <tr><td class="paramname">key</td><td>The secret key </td></tr> <tr><td class="paramname">c</td><td>The number of compression rounds </td></tr> <tr><td class="paramname">d</td><td>The number of finalization rounds </td></tr> </table> </dd> </dl> <dl class="section return"><dt>Returns</dt><dd>The hash value as a 64bit unsigned integer </dd></dl> </div> </div> </div><!-- contents --> <!-- start footer part --> <hr class="footer"/><address class="footer"><small> Generated by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/> </a> 1.8.13 </small></address> </body> </html>