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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>XML-Security-C: OpenSSLCryptoHash Class Reference</title>
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<h1>OpenSSLCryptoHash Class Reference<br>
<small>
[<a class="el" href="group__opensslcrypto.html">OpenSSL Interface</a>]</small>
</h1><code>#include <<a class="el" href="OpenSSLCryptoHash_8hpp-source.html">OpenSSLCryptoHash.hpp</a>></code>
<p>
Inheritance diagram for OpenSSLCryptoHash:<p><center><img src="classOpenSSLCryptoHash__inherit__graph.png" border="0" usemap="#OpenSSLCryptoHash__inherit__map" alt="Inheritance graph"></center>
<map name="OpenSSLCryptoHash__inherit__map">
<area href="classXSECCryptoHash.html" shape="rect" coords="17,9,147,33" alt="">
</map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center>Collaboration diagram for OpenSSLCryptoHash:<p><center><img src="classOpenSSLCryptoHash__coll__graph.png" border="0" usemap="#OpenSSLCryptoHash__coll__map" alt="Collaboration graph"></center>
<map name="OpenSSLCryptoHash__coll__map">
<area href="classXSECCryptoHash.html" shape="rect" coords="17,9,147,33" alt="">
</map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="classOpenSSLCryptoHash-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
Interface definition for Hash functions.
<p>
Uses the OpenSSL EVP_digest functions to implement the various hash functions required by the OpenSSL library.
<p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td colspan="2"><div class="groupHeader">Constructors and Destructors</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classOpenSSLCryptoHash.html#z80_0">OpenSSLCryptoHash</a> (<a class="el" href="classXSECCryptoHash.html#w7">XSECCryptoHash::HashType</a> alg)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classOpenSSLCryptoHash.html#z80_1">~OpenSSLCryptoHash</a> ()</td></tr>
<tr><td colspan="2"><div class="groupHeader">HMAC Functions</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classOpenSSLCryptoHash.html#z81_0">setKey</a> (<a class="el" href="classXSECCryptoKey.html">XSECCryptoKey</a> *key)</td></tr>
<tr><td colspan="2"><div class="groupHeader">Digest/Hash functions</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classOpenSSLCryptoHash.html#z82_0">reset</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Rest the hash function. <a href="#z82_0"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classOpenSSLCryptoHash.html#z82_1">hash</a> (unsigned char *data, unsigned int length)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Hash some data. <a href="#z82_1"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="classOpenSSLCryptoHash.html#z82_2">finish</a> (unsigned char *hash, unsigned int maxLength)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Finish up a Digest operation and read the result. <a href="#z82_2"></a><br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Information functions</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="classXSECCryptoHash.html#w7">HashType</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classOpenSSLCryptoHash.html#z83_0">getHashType</a> (void)</td></tr>
</table>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="z80_0" doxytag="OpenSSLCryptoHash::OpenSSLCryptoHash"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">OpenSSLCryptoHash::OpenSSLCryptoHash </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classXSECCryptoHash.html#w7">XSECCryptoHash::HashType</a> </td>
<td class="mdname1" valign="top" nowrap> <em>alg</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
</td>
</tr>
</table>
<a class="anchor" name="z80_1" doxytag="OpenSSLCryptoHash::~OpenSSLCryptoHash"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">virtual OpenSSLCryptoHash::~OpenSSLCryptoHash </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
</td>
</tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="z82_2" doxytag="OpenSSLCryptoHash::finish"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">virtual unsigned int OpenSSLCryptoHash::finish </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">unsigned char * </td>
<td class="mdname" nowrap> <em>hash</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>unsigned int </td>
<td class="mdname" nowrap> <em>maxLength</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Finish up a Digest operation and read the result.
<p>
This call tells the CryptoHash object that the input is complete and to finalise the Digest. The output of the digest is read into the hash buffer (at most maxLength bytes)<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>hash</em> </td><td>The buffer the hash should be read into. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>maxLength</em> </td><td>The maximum number of bytes to be read into hash </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>The number of bytes copied into the hash buffer </dd></dl>
<p>
Implements <a class="el" href="classXSECCryptoHash.html#z154_2">XSECCryptoHash</a>. </td>
</tr>
</table>
<a class="anchor" name="z83_0" doxytag="OpenSSLCryptoHash::getHashType"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">virtual <a class="el" href="classXSECCryptoHash.html#w7">HashType</a> OpenSSLCryptoHash::getHashType </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Determine the hash type of this object<p>
<dl compact><dt><b>Returns:</b></dt><dd>The hash type </dd></dl>
<p>
Implements <a class="el" href="classXSECCryptoHash.html#z155_0">XSECCryptoHash</a>. </td>
</tr>
</table>
<a class="anchor" name="z82_1" doxytag="OpenSSLCryptoHash::hash"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">virtual void OpenSSLCryptoHash::hash </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">unsigned char * </td>
<td class="mdname" nowrap> <em>data</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>unsigned int </td>
<td class="mdname" nowrap> <em>length</em></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Hash some data.
<p>
Take length bytes of data from the data buffer and update the hash that already exists. This function may (and normally will) be called many times for large blocks of data.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>data</em> </td><td>The buffer containing the data to be hashed. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>length</em> </td><td>The number of bytes to be read from data </td></tr>
</table>
</dl>
<p>
Implements <a class="el" href="classXSECCryptoHash.html#z154_1">XSECCryptoHash</a>. </td>
</tr>
</table>
<a class="anchor" name="z82_0" doxytag="OpenSSLCryptoHash::reset"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">virtual void OpenSSLCryptoHash::reset </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Rest the hash function.
<p>
Re-initialises the digest structure.
<p>
Implements <a class="el" href="classXSECCryptoHash.html#z154_0">XSECCryptoHash</a>. </td>
</tr>
</table>
<a class="anchor" name="z81_0" doxytag="OpenSSLCryptoHash::setKey"></a><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">virtual void OpenSSLCryptoHash::setKey </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classXSECCryptoKey.html">XSECCryptoKey</a> * </td>
<td class="mdname1" valign="top" nowrap> <em>key</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Does nothing. If the required function is an HMAC function, then <a class="el" href="classOpenSSLCryptoHashHMAC.html">OpenSSLCryptoHashHMAC</a> should be used.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>key</em> </td><td>The key the HMAC function should use. </td></tr>
</table>
</dl>
<p>
Implements <a class="el" href="classXSECCryptoHash.html#z156_0">XSECCryptoHash</a>. </td>
</tr>
</table>
<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="OpenSSLCryptoHash_8hpp-source.html">OpenSSLCryptoHash.hpp</a></ul>
<hr size="1"><address style="align: right;"><small>Generated on Sun Jul 3 17:41:57 2005 for XML-Security-C by
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