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<div id="projectname">Crypto++
 <span id="projectnumber">7.0</span>
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<div id="projectbrief">Free C++ class library of cryptographic schemes</div>
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<a href="#pub-methods">Public Member Functions</a> |
<a href="class_encoded_point-members.html">List of all members</a> </div>
<div class="headertitle">
<div class="title">EncodedPoint< Point > Class Template Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
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<p>Abstract class for encoding and decoding ellicptic curve points.
<a href="class_encoded_point.html#details">More...</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a844fcbf759f55bca8fc2ae13bda5569f"><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_encoded_point.html#a844fcbf759f55bca8fc2ae13bda5569f">DecodePoint</a> (Point &P, <a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> &bt, size_t len) const =0</td></tr>
<tr class="memdesc:a844fcbf759f55bca8fc2ae13bda5569f"><td class="mdescLeft"> </td><td class="mdescRight">Decodes an elliptic curve point. <a href="#a844fcbf759f55bca8fc2ae13bda5569f">More...</a><br /></td></tr>
<tr class="separator:a844fcbf759f55bca8fc2ae13bda5569f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0e51d9cd778655c08db4d63f1b58b09f"><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_encoded_point.html#a0e51d9cd778655c08db4d63f1b58b09f">DecodePoint</a> (Point &P, const byte *encodedPoint, size_t len) const =0</td></tr>
<tr class="memdesc:a0e51d9cd778655c08db4d63f1b58b09f"><td class="mdescLeft"> </td><td class="mdescRight">Decodes an elliptic curve point. <a href="#a0e51d9cd778655c08db4d63f1b58b09f">More...</a><br /></td></tr>
<tr class="separator:a0e51d9cd778655c08db4d63f1b58b09f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3811a1f1385f673a1663df614c87c001"><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_encoded_point.html#a3811a1f1385f673a1663df614c87c001">VerifyPoint</a> (const Point &P) const =0</td></tr>
<tr class="memdesc:a3811a1f1385f673a1663df614c87c001"><td class="mdescLeft"> </td><td class="mdescRight">Verifies points on elliptic curve. <a href="#a3811a1f1385f673a1663df614c87c001">More...</a><br /></td></tr>
<tr class="separator:a3811a1f1385f673a1663df614c87c001"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1b4f38ed795723db0773af1b30874e46"><td class="memItemLeft" align="right" valign="top">virtual unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_encoded_point.html#a1b4f38ed795723db0773af1b30874e46">EncodedPointSize</a> (bool compressed=false) const =0</td></tr>
<tr class="memdesc:a1b4f38ed795723db0773af1b30874e46"><td class="mdescLeft"> </td><td class="mdescRight">Determines encoded point size. <a href="#a1b4f38ed795723db0773af1b30874e46">More...</a><br /></td></tr>
<tr class="separator:a1b4f38ed795723db0773af1b30874e46"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a38676be5408ca8d5b76864d0d05871cc"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_encoded_point.html#a38676be5408ca8d5b76864d0d05871cc">EncodePoint</a> (byte *encodedPoint, const Point &P, bool compressed) const =0</td></tr>
<tr class="memdesc:a38676be5408ca8d5b76864d0d05871cc"><td class="mdescLeft"> </td><td class="mdescRight">Encodes an elliptic curve point. <a href="#a38676be5408ca8d5b76864d0d05871cc">More...</a><br /></td></tr>
<tr class="separator:a38676be5408ca8d5b76864d0d05871cc"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad40e267748b7c3882b5e2940c6582877"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_encoded_point.html#ad40e267748b7c3882b5e2940c6582877">EncodePoint</a> (<a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> &bt, const Point &P, bool compressed) const =0</td></tr>
<tr class="memdesc:ad40e267748b7c3882b5e2940c6582877"><td class="mdescLeft"> </td><td class="mdescRight">Encodes an elliptic curve point. <a href="#ad40e267748b7c3882b5e2940c6582877">More...</a><br /></td></tr>
<tr class="separator:ad40e267748b7c3882b5e2940c6582877"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aeac00b790920c54c03fcec814c3d35a1"><td class="memItemLeft" align="right" valign="top">virtual Point </td><td class="memItemRight" valign="bottom"><a class="el" href="class_encoded_point.html#aeac00b790920c54c03fcec814c3d35a1">BERDecodePoint</a> (<a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> &bt) const =0</td></tr>
<tr class="memdesc:aeac00b790920c54c03fcec814c3d35a1"><td class="mdescLeft"> </td><td class="mdescRight">BER Decodes an elliptic curve point. <a href="#aeac00b790920c54c03fcec814c3d35a1">More...</a><br /></td></tr>
<tr class="separator:aeac00b790920c54c03fcec814c3d35a1"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a81265b6ace320959d2dbc13a4438fcc1"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_encoded_point.html#a81265b6ace320959d2dbc13a4438fcc1">DEREncodePoint</a> (<a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> &bt, const Point &P, bool compressed) const =0</td></tr>
<tr class="memdesc:a81265b6ace320959d2dbc13a4438fcc1"><td class="mdescLeft"> </td><td class="mdescRight">DER Encodes an elliptic curve point. <a href="#a81265b6ace320959d2dbc13a4438fcc1">More...</a><br /></td></tr>
<tr class="separator:a81265b6ace320959d2dbc13a4438fcc1"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template<class Point><br />
class EncodedPoint< Point ></h3>
<p>Abstract class for encoding and decoding ellicptic curve points. </p>
<dl class="tparams"><dt>Template Parameters</dt><dd>
<table class="tparams">
<tr><td class="paramname">Point</td><td>ellicptic curve point</td></tr>
</table>
</dd>
</dl>
<p><a class="el" href="class_encoded_point.html" title="Abstract class for encoding and decoding ellicptic curve points. ">EncodedPoint</a> is an interface for encoding and decoding elliptic curve points. The template parameter <code>Point</code> should be a class like <a class="el" href="class_e_c_p.html" title="Elliptic Curve over GF(p), where p is prime. ">ECP</a> or <a class="el" href="class_e_c2_n.html" title="Elliptic Curve over GF(2^n) ">EC2N</a>. </p><dl class="section since"><dt>Since</dt><dd>Crypto++ 6.0 </dd></dl>
<p class="definition">Definition at line <a class="el" href="ecpoint_8h_source.html#l00090">90</a> of file <a class="el" href="ecpoint_8h_source.html">ecpoint.h</a>.</p>
</div><h2 class="groupheader">Member Function Documentation</h2>
<a id="a844fcbf759f55bca8fc2ae13bda5569f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a844fcbf759f55bca8fc2ae13bda5569f">◆ </a></span>DecodePoint() <span class="overload">[1/2]</span></h2>
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<div class="memtemplate">
template<class Point> </div>
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<td class="memname">virtual bool <a class="el" href="class_encoded_point.html">EncodedPoint</a>< Point >::DecodePoint </td>
<td>(</td>
<td class="paramtype">Point & </td>
<td class="paramname"><em>P</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> & </td>
<td class="paramname"><em>bt</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>len</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Decodes an elliptic curve point. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">P</td><td>point which is decoded </td></tr>
<tr><td class="paramname">bt</td><td>source <a class="el" href="class_buffered_transformation.html" title="Interface for buffered transformations. ">BufferedTransformation</a> </td></tr>
<tr><td class="paramname">len</td><td>number of bytes to read from the <a class="el" href="class_buffered_transformation.html" title="Interface for buffered transformations. ">BufferedTransformation</a> </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true if a point was decoded, false otherwise </dd></dl>
<p>Implemented in <a class="el" href="class_e_c_p.html#aac188a1e14a4f7807720f45e3aa30768">ECP</a>, and <a class="el" href="class_e_c2_n.html#a7c244fdd81f249281a67bfea84e4c091">EC2N</a>.</p>
</div>
</div>
<a id="a0e51d9cd778655c08db4d63f1b58b09f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a0e51d9cd778655c08db4d63f1b58b09f">◆ </a></span>DecodePoint() <span class="overload">[2/2]</span></h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template<class Point> </div>
<table class="mlabels">
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<td class="memname">virtual bool <a class="el" href="class_encoded_point.html">EncodedPoint</a>< Point >::DecodePoint </td>
<td>(</td>
<td class="paramtype">Point & </td>
<td class="paramname"><em>P</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const byte * </td>
<td class="paramname"><em>encodedPoint</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>len</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Decodes an elliptic curve point. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">P</td><td>point which is decoded </td></tr>
<tr><td class="paramname">encodedPoint</td><td>byte array with the encoded point </td></tr>
<tr><td class="paramname">len</td><td>the size of the array </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true if a point was decoded, false otherwise </dd></dl>
<p>Implemented in <a class="el" href="class_e_c_p.html#ac1d2920f888a7fb778fd4f468a464404">ECP</a>, and <a class="el" href="class_e_c2_n.html#a17e4228b2569a376ac29e819f09d48e3">EC2N</a>.</p>
</div>
</div>
<a id="a3811a1f1385f673a1663df614c87c001"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3811a1f1385f673a1663df614c87c001">◆ </a></span>VerifyPoint()</h2>
<div class="memitem">
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<div class="memtemplate">
template<class Point> </div>
<table class="mlabels">
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<td class="mlabels-left">
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<td class="memname">virtual bool <a class="el" href="class_encoded_point.html">EncodedPoint</a>< Point >::VerifyPoint </td>
<td>(</td>
<td class="paramtype">const Point & </td>
<td class="paramname"><em>P</em></td><td>)</td>
<td> const</td>
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</td>
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<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
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<p>Verifies points on elliptic curve. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">P</td><td>point to verify </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true if the point is valid, false otherwise </dd></dl>
<p>Implemented in <a class="el" href="class_e_c_p.html#a84825919705740161c1bd28b07cbd209">ECP</a>, and <a class="el" href="class_e_c2_n.html#a3a5ffe29e9a1edc881319245608effde">EC2N</a>.</p>
</div>
</div>
<a id="a1b4f38ed795723db0773af1b30874e46"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a1b4f38ed795723db0773af1b30874e46">◆ </a></span>EncodedPointSize()</h2>
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<div class="memtemplate">
template<class Point> </div>
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<td class="memname">virtual unsigned int <a class="el" href="class_encoded_point.html">EncodedPoint</a>< Point >::EncodedPointSize </td>
<td>(</td>
<td class="paramtype">bool </td>
<td class="paramname"><em>compressed</em> = <code>false</code></td><td>)</td>
<td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Determines encoded point size. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">compressed</td><td>flag indicating if the point is compressed </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the minimum number of bytes required to encode the point </dd></dl>
<p>Implemented in <a class="el" href="class_e_c_p.html#aa8b38e2d453f1173923c6fd8e9880606">ECP</a>, and <a class="el" href="class_e_c2_n.html#a71680f7f6eea66010f1dc40659610d60">EC2N</a>.</p>
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<a id="a38676be5408ca8d5b76864d0d05871cc"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a38676be5408ca8d5b76864d0d05871cc">◆ </a></span>EncodePoint() <span class="overload">[1/2]</span></h2>
<div class="memitem">
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<div class="memtemplate">
template<class Point> </div>
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<td class="memname">virtual void <a class="el" href="class_encoded_point.html">EncodedPoint</a>< Point >::EncodePoint </td>
<td>(</td>
<td class="paramtype">byte * </td>
<td class="paramname"><em>encodedPoint</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const Point & </td>
<td class="paramname"><em>P</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"><em>compressed</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
</tr>
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<p>Encodes an elliptic curve point. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">P</td><td>point which is decoded </td></tr>
<tr><td class="paramname">encodedPoint</td><td>byte array for the encoded point </td></tr>
<tr><td class="paramname">compressed</td><td>flag indicating if the point is compressed</td></tr>
</table>
</dd>
</dl>
<p><code>encodedPoint</code> must be at least <a class="el" href="class_encoded_point.html#a1b4f38ed795723db0773af1b30874e46" title="Determines encoded point size. ">EncodedPointSize()</a> in length </p>
<p>Implemented in <a class="el" href="class_e_c_p.html#a4d0d3344902b48260d0b5dacca2073b1">ECP</a>, and <a class="el" href="class_e_c2_n.html#a8ffdc5f8cdb1381d9ffd81c4c5eddc45">EC2N</a>.</p>
</div>
</div>
<a id="ad40e267748b7c3882b5e2940c6582877"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad40e267748b7c3882b5e2940c6582877">◆ </a></span>EncodePoint() <span class="overload">[2/2]</span></h2>
<div class="memitem">
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template<class Point> </div>
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<td class="memname">virtual void <a class="el" href="class_encoded_point.html">EncodedPoint</a>< Point >::EncodePoint </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> & </td>
<td class="paramname"><em>bt</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const Point & </td>
<td class="paramname"><em>P</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"><em>compressed</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td> const</td>
</tr>
</table>
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<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
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<p>Encodes an elliptic curve point. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">bt</td><td>target <a class="el" href="class_buffered_transformation.html" title="Interface for buffered transformations. ">BufferedTransformation</a> </td></tr>
<tr><td class="paramname">P</td><td>point which is encoded </td></tr>
<tr><td class="paramname">compressed</td><td>flag indicating if the point is compressed </td></tr>
</table>
</dd>
</dl>
<p>Implemented in <a class="el" href="class_e_c_p.html#a4cf289c71b832211eddfb3b0608ebaab">ECP</a>, and <a class="el" href="class_e_c2_n.html#a4e3e18dc003d0fa86c8e9dfdbef5f7f7">EC2N</a>.</p>
</div>
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<a id="aeac00b790920c54c03fcec814c3d35a1"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aeac00b790920c54c03fcec814c3d35a1">◆ </a></span>BERDecodePoint()</h2>
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template<class Point> </div>
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<td class="memname">virtual Point <a class="el" href="class_encoded_point.html">EncodedPoint</a>< Point >::BERDecodePoint </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> & </td>
<td class="paramname"><em>bt</em></td><td>)</td>
<td> const</td>
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</table>
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<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
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<p>BER Decodes an elliptic curve point. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">bt</td><td>source <a class="el" href="class_buffered_transformation.html" title="Interface for buffered transformations. ">BufferedTransformation</a> </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the decoded elliptic curve point </dd></dl>
<p>Implemented in <a class="el" href="class_e_c_p.html#a9e97f700fa09b811ea9b0e91e3fbf88f">ECP</a>, and <a class="el" href="class_e_c2_n.html#a56d25734e2f1cfa209d16ebba4fa30a2">EC2N</a>.</p>
</div>
</div>
<a id="a81265b6ace320959d2dbc13a4438fcc1"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a81265b6ace320959d2dbc13a4438fcc1">◆ </a></span>DEREncodePoint()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template<class Point> </div>
<table class="mlabels">
<tr>
<td class="mlabels-left">
<table class="memname">
<tr>
<td class="memname">virtual void <a class="el" href="class_encoded_point.html">EncodedPoint</a>< Point >::DEREncodePoint </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_buffered_transformation.html">BufferedTransformation</a> & </td>
<td class="paramname"><em>bt</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const Point & </td>
<td class="paramname"><em>P</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"><em>compressed</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td> const</td>
</tr>
</table>
</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>DER Encodes an elliptic curve point. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">bt</td><td>target <a class="el" href="class_buffered_transformation.html" title="Interface for buffered transformations. ">BufferedTransformation</a> </td></tr>
<tr><td class="paramname">P</td><td>point which is encoded </td></tr>
<tr><td class="paramname">compressed</td><td>flag indicating if the point is compressed </td></tr>
</table>
</dd>
</dl>
<p>Implemented in <a class="el" href="class_e_c_p.html#a6ab1727c66563a593880d1fb3b595fb5">ECP</a>, and <a class="el" href="class_e_c2_n.html#a87014b233eb62e3da8ad79f98200959c">EC2N</a>.</p>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="ecpoint_8h_source.html">ecpoint.h</a></li>
</ul>
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