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<div id="projectname">post quantum cryptography
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<div id="projectbrief">Highly optimized implementation of the NTRUEncrypt algorithm</div>
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<a href="#func-members">Functions</a> </div>
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<div class="title">ntru_encrypt.c File Reference</div> </div>
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<div class="contents">
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<p>NTRU encryption.
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<a href="#details">More...</a></p>
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<div class="textblock"><code>#include "<a class="el" href="ntru__ascii__poly_8h_source.html">ntru_ascii_poly.h</a>"</code><br />
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<code>#include "<a class="el" href="ntru__encrypt_8h_source.html">ntru_encrypt.h</a>"</code><br />
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<code>#include "<a class="el" href="ntru__mem_8h_source.html">ntru_mem.h</a>"</code><br />
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<code>#include "<a class="el" href="ntru__params_8h_source.html">ntru_params.h</a>"</code><br />
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<code>#include "<a class="el" href="ntru__poly_8h_source.html">ntru_poly.h</a>"</code><br />
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<code>#include "<a class="el" href="ntru__poly__ascii_8h_source.html">ntru_poly_ascii.h</a>"</code><br />
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<code>#include "<a class="el" href="ntru__string_8h_source.html">ntru_string.h</a>"</code><br />
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<code>#include <string.h></code><br />
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<code>#include <fmpz_poly.h></code><br />
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<code>#include <fmpz.h></code><br />
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</div><div class="textblock"><div class="dynheader">
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Include dependency graph for ntru_encrypt.c:</div>
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<div class="dyncontent">
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<div class="center"><img src="ntru__encrypt_8c__incl.png" border="0" usemap="#_2home_2travis_2build_2hasufell_2pqc_2src_2ntru__encrypt_8c" alt=""/></div>
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<map name="_2home_2travis_2build_2hasufell_2pqc_2src_2ntru__encrypt_8c" id="_2home_2travis_2build_2hasufell_2pqc_2src_2ntru__encrypt_8c">
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<area shape="rect" id="node3" href="ntru__ascii__poly_8h.html" title="header for ntru_ascii_poly.c " alt="" coords="286,117,406,147"/><area shape="rect" id="node9" href="ntru__string_8h.html" title="header for ntru_string.c " alt="" coords="401,195,494,224"/><area shape="rect" id="node12" href="ntru__params_8h.html" title="NTRU parameters. " alt="" coords="497,272,601,301"/><area shape="rect" id="node20" href="ntru__encrypt_8h.html" title="header for encrypt.c " alt="" coords="482,117,586,147"/><area shape="rect" id="node23" href="ntru__poly_8h.html" title="header for ntru_poly.c " alt="" coords="785,195,870,224"/><area shape="rect" id="node38" href="ntru__mem_8h.html" title="header for ntru_mem.c " alt="" coords="620,195,710,224"/><area shape="rect" id="node43" href="ntru__poly__ascii_8h.html" title="header for ntru_poly_ascii.c " alt="" coords="81,117,201,147"/><area shape="rect" id="node5" href="ntru__common_8h.html" title="common macros/functions " alt="" coords="78,195,190,224"/><area shape="rect" id="node25" href="ntru__err_8h.html" title="error handling " alt="" coords="713,272,790,301"/></map>
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</div>
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<p><a href="ntru__encrypt_8c_source.html">Go to the source code of this file.</a></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:a0156453c7cab7cf3da259beb1daf914b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__encrypt_8c.html#a0156453c7cab7cf3da259beb1daf914b">ntru_encrypt_poly</a> (const fmpz_poly_t msg_bin, const fmpz_poly_t pub_key, const fmpz_poly_t rnd, fmpz_poly_t out, const <a class="el" href="structntru__params.html">ntru_params</a> *params)</td></tr>
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<tr class="separator:a0156453c7cab7cf3da259beb1daf914b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a0bb47c0fa0dd4a4cfa0c0f7a722fd554"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structstring.html">string</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__encrypt_8c.html#a0bb47c0fa0dd4a4cfa0c0f7a722fd554">ntru_encrypt_string</a> (const <a class="el" href="structstring.html">string</a> *msg, const fmpz_poly_t pub_key, const fmpz_poly_t rnd, const <a class="el" href="structntru__params.html">ntru_params</a> *params)</td></tr>
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<tr class="separator:a0bb47c0fa0dd4a4cfa0c0f7a722fd554"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>NTRU encryption. </p>
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<p>This file handles the NTRU encryption algorithm. </p>
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<p>Definition in file <a class="el" href="ntru__encrypt_8c_source.html">ntru_encrypt.c</a>.</p>
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</div><h2 class="groupheader">Function Documentation</h2>
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<a class="anchor" id="a0156453c7cab7cf3da259beb1daf914b"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void ntru_encrypt_poly </td>
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<td>(</td>
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<td class="paramtype">const fmpz_poly_t </td>
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<td class="paramname"><em>msg_tern</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const fmpz_poly_t </td>
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<td class="paramname"><em>pub_key</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const fmpz_poly_t </td>
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<td class="paramname"><em>rnd</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">fmpz_poly_t </td>
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<td class="paramname"><em>out</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const <a class="el" href="structntru__params.html">ntru_params</a> * </td>
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<td class="paramname"><em>params</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>encrypt the msg, using the math: e = (h ∗ r) + m (mod q)</p>
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<p>e = the encrypted poly</p>
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<p>h = the public key</p>
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<p>r = the random poly</p>
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<p>m = the message poly</p>
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<p>q = large mod</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">msg_tern</td><td>the message to encrypt, in ternary format </td></tr>
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<tr><td class="paramname">pub_key</td><td>the public key </td></tr>
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<tr><td class="paramname">rnd</td><td>the random poly (should have relatively small coefficients, but not restricted to {-1, 0, 1}) </td></tr>
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<tr><td class="paramname">out</td><td>the output poly which is in the range {0, q-1} (not ternary!) [out] </td></tr>
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<tr><td class="paramname">params</td><td><a class="el" href="structntru__params.html">ntru_params</a> the ntru context </td></tr>
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</table>
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</dd>
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</dl>
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<p>Definition at line <a class="el" href="ntru__encrypt_8c_source.html#l00046">46</a> of file <a class="el" href="ntru__encrypt_8c_source.html">ntru_encrypt.c</a>.</p>
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</div>
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</div>
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<a class="anchor" id="a0bb47c0fa0dd4a4cfa0c0f7a722fd554"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname"><a class="el" href="structstring.html">string</a>* ntru_encrypt_string </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="structstring.html">string</a> * </td>
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<td class="paramname"><em>msg</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const fmpz_poly_t </td>
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<td class="paramname"><em>pub_key</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const fmpz_poly_t </td>
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<td class="paramname"><em>rnd</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const <a class="el" href="structntru__params.html">ntru_params</a> * </td>
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<td class="paramname"><em>params</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Encrypt a message in the form of a null-terminated char array and return a string.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">msg</td><td>the message </td></tr>
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<tr><td class="paramname">pub_key</td><td>the public key </td></tr>
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<tr><td class="paramname">rnd</td><td>the random poly (should have relatively small coefficients, but not restricted to {-1, 0, 1}) </td></tr>
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<tr><td class="paramname">params</td><td><a class="el" href="structntru__params.html">ntru_params</a> the ntru context </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>the newly allocated encrypted string </dd></dl>
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<p>Definition at line <a class="el" href="ntru__encrypt_8c_source.html#l00074">74</a> of file <a class="el" href="ntru__encrypt_8c_source.html">ntru_encrypt.c</a>.</p>
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