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<hr><h1>Digest Class Reference</h1>The digest base class is used for implementing and deriving one way hashing functions. base class for hashing services.
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="digest_8h-source.html">digest.h</a>></code>
<p>
<p>Inheritance diagram for Digest::
<p><center><img src="class_digest.gif" usemap="#Digest_map" border="0"></center>
<map name="Digest_map">
<area href="classstd_1_1streambuf.html" alt="std::streambuf" shape="rect" coords="0,0,105,24">
<area href="classstd_1_1ostream.html" alt="std::ostream" shape="rect" coords="115,0,220,24">
<area href="class_checksum_digest.html" alt="ChecksumDigest" shape="rect" coords="0,112,105,136">
<area href="class_c_r_c16_digest.html" alt="CRC16Digest" shape="rect" coords="115,112,220,136">
</map>
<a href="class_digest-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0>
<tr><td colspan=2><br><h2>Protected Methods</h2></td></tr>
<tr><td nowrap align=right valign=top> </td><td valign=bottom><a class="el" href="class_digest.html#b0">Digest</a> ()</td></tr>
<tr><td nowrap align=right valign=top>virtual void </td><td valign=bottom><a class="el" href="class_digest.html#b1">initDigest</a> (void)=0</td></tr>
<tr><td> </td><td><font size=-1><em>Reset the digest table to an initial default value.</em> <a href="#b1">More...</a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top>virtual unsigned </td><td valign=bottom><a class="el" href="class_digest.html#b2">getSize</a> (void)=0</td></tr>
<tr><td> </td><td><font size=-1><em>Get the size of a digest in octets.</em> <a href="#b2">More...</a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top>virtual unsigned </td><td valign=bottom><a class="el" href="class_digest.html#b3">getDigest</a> (unsigned char *buffer)=0</td></tr>
<tr><td> </td><td><font size=-1><em>Copy the binary digest buffer to user memory.</em> <a href="#b3">More...</a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top>virtual void </td><td valign=bottom><a class="el" href="class_digest.html#b4">putDigest</a> (unsigned char *buffer, unsigned length)=0</td></tr>
<tr><td> </td><td><font size=-1><em>Put data into the digest bypassing the stream subsystem.</em> <a href="#b4">More...</a><em></em></font><br><br></td></tr>
<tr><td nowrap align=right valign=top>virtual <a class="el" href="classstd_1_1ostream.html">std::ostream</a> & </td><td valign=bottom><a class="el" href="class_digest.html#b5">strDigest</a> (<a class="el" href="classstd_1_1ostream.html">std::ostream</a> &os)=0</td></tr>
<tr><td> </td><td><font size=-1><em>print a digest string for export.</em> <a href="#b5">More...</a><em></em></font><br><br></td></tr>
<tr><td colspan=2><br><h2>Friends</h2></td></tr>
<tr><td nowrap align=right valign=top><a class="el" href="classstd_1_1ostream.html">std::ostream</a> & </td><td valign=bottom><a class="el" href="class_digest.html#l0">operator<<</a> (<a class="el" href="classstd_1_1ostream.html">std::ostream</a> &os, Digest &ia)</td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
The digest base class is used for implementing and deriving one way hashing functions. base class for hashing services.
<p>
<dl compact><dt><b>
Author: </b><dd>
David Sugar <<a href="mailto:dyfet@ostel.com">dyfet@ostel.com</a>> </dl>
<p>
<hr><h2>Constructor & Destructor Documentation</h2>
<a name="b0" doxytag="Digest::Digest"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> Digest::Digest </td>
<td class="md">( </td>
<td class="mdname1"> </td>
<td class="md">) </td>
<td class="md"><code> [protected]</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 name="b3" doxytag="Digest::getDigest"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> virtual unsigned Digest::getDigest </td>
<td class="md">( </td>
<td class="md">unsigned char *</td>
<td class="mdname1"> <em>buffer</em> </td>
<td class="md">) </td>
<td class="md"><code> [protected, pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Copy the binary digest buffer to user memory.
<p>
<dl compact><dt><b>
Returns: </b><dd>
number of bytes in digest. </dl><dl compact><dt><b>
Parameters: </b><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>buffer
</em> </td><td>
to write into. </td></tr>
</table>
</dl>
<p>
Reimplemented in <a class="el" href="class_checksum_digest.html#a3">ChecksumDigest</a>, and <a class="el" href="class_c_r_c16_digest.html#a3">CRC16Digest</a>. </td>
</tr>
</table>
<a name="b2" doxytag="Digest::getSize"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> virtual unsigned Digest::getSize </td>
<td class="md">( </td>
<td class="md">void</td>
<td class="mdname1"> </td>
<td class="md">) </td>
<td class="md"><code> [protected, pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Get the size of a digest in octets.
<p>
<dl compact><dt><b>
Returns: </b><dd>
number of bytes in digest. </dl>
<p>
Reimplemented in <a class="el" href="class_checksum_digest.html#a2">ChecksumDigest</a>, and <a class="el" href="class_c_r_c16_digest.html#a2">CRC16Digest</a>. </td>
</tr>
</table>
<a name="b1" doxytag="Digest::initDigest"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> virtual void Digest::initDigest </td>
<td class="md">( </td>
<td class="md">void</td>
<td class="mdname1"> </td>
<td class="md">) </td>
<td class="md"><code> [protected, pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Reset the digest table to an initial default value.
<p>
<p>
Reimplemented in <a class="el" href="class_checksum_digest.html#a1">ChecksumDigest</a>, and <a class="el" href="class_c_r_c16_digest.html#a1">CRC16Digest</a>. </td>
</tr>
</table>
<a name="b4" doxytag="Digest::putDigest"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> virtual void Digest::putDigest </td>
<td class="md">( </td>
<td class="md">unsigned char *</td>
<td class="mdname"> <em>buffer</em>, </td>
</tr>
<tr>
<td></td>
<td></td>
<td class="md">unsigned</td>
<td class="mdname"> <em>length</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [protected, pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Put data into the digest bypassing the stream subsystem.
<p>
<dl compact><dt><b>
Parameters: </b><dd>
<table border=0 cellspacing=2 cellpadding=0>
<tr><td valign=top><em>buffer
</em> </td><td>
to read from. </td></tr>
<tr><td valign=top><em>length
</em> </td><td>
of data. </td></tr>
</table>
</dl>
<p>
Reimplemented in <a class="el" href="class_checksum_digest.html#a4">ChecksumDigest</a>, and <a class="el" href="class_c_r_c16_digest.html#a4">CRC16Digest</a>. </td>
</tr>
</table>
<a name="b5" doxytag="Digest::strDigest"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> virtual <a class="el" href="classstd_1_1ostream.html">std::ostream</a>& Digest::strDigest </td>
<td class="md">( </td>
<td class="md"><a class="el" href="classstd_1_1ostream.html">std::ostream</a> &</td>
<td class="mdname1"> <em>os</em> </td>
<td class="md">) </td>
<td class="md"><code> [protected, pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
print a digest string for export.
<p>
<dl compact><dt><b>
Returns: </b><dd>
string representation of digest. </dl>
<p>
Reimplemented in <a class="el" href="class_checksum_digest.html#b1">ChecksumDigest</a>, and <a class="el" href="class_c_r_c16_digest.html#b1">CRC16Digest</a>. </td>
</tr>
</table>
<hr><h2>Friends And Related Function Documentation</h2>
<a name="l0" doxytag="Digest::operator<<"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> <a class="el" href="classstd_1_1ostream.html">std::ostream</a>& operator<< </td>
<td class="md">( </td>
<td class="md"><a class="el" href="classstd_1_1ostream.html">std::ostream</a> &</td>
<td class="mdname"> <em>os</em>, </td>
</tr>
<tr>
<td></td>
<td></td>
<td class="md">Digest &</td>
<td class="mdname"> <em>ia</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [friend]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
</td>
</tr>
</table>
<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="digest_8h-source.html">digest.h</a></ul>
<hr><address><small>Generated at Tue Nov 20 13:28:48 2001 for CommonC++ by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.gif" alt="doxygen" align="middle" border=0
width=110 height=53></a>1.2.10 written by <a href="mailto:dimitri@stack.nl">Dimitri van Heesch</a>,
© 1997-2001</small></address>
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