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778 lines
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<title>post quantum cryptography: /home/travis/build/hasufell/pqc/src/ntru_poly.c File Reference</title>
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<div id="projectname">post quantum cryptography
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</div>
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<div id="projectbrief">Highly optimized implementation of the NTRUEncrypt algorithm</div>
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<div class="header">
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<a href="#func-members">Functions</a> </div>
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<div class="title">/home/travis/build/hasufell/pqc/src/ntru_poly.c File Reference</div> </div>
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<div class="contents">
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<p>operations on polynomials
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<a href="#details">More...</a></p>
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<div class="textblock"><code>#include "<a class="el" href="ntru__err_8h_source.html">ntru_err.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 <stdarg.h></code><br/>
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<code>#include <stdbool.h></code><br/>
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<code>#include <stdint.h></code><br/>
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<code>#include <stdio.h></code><br/>
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<code>#include <stdlib.h></code><br/>
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<code>#include <sys/types.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_poly.c:</div>
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<div class="dyncontent">
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<div class="center"><img src="ntru__poly_8c__incl.png" border="0" usemap="#_2home_2travis_2build_2hasufell_2pqc_2src_2ntru__poly_8c" alt=""/></div>
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<map name="_2home_2travis_2build_2hasufell_2pqc_2src_2ntru__poly_8c" id="_2home_2travis_2build_2hasufell_2pqc_2src_2ntru__poly_8c">
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</map>
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</div>
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</div>
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<p><a href="ntru__poly_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><td colspan="2"><h2><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#a891af13dc4355c9fab9ca3fafcac8054">poly_mod2_to_modq</a> (const fmpz_poly_t a, fmpz_poly_t Fq, const <a class="el" href="structntru__params.html">ntru_params</a> *params)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#aaaac83ec72414aa208832442657c3520">fmpz_cmp_si_n</a> (const fmpz_t f, slong g)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#a20f86085d5eb5372fd25dc270069d38c">poly_new</a> (fmpz_poly_t new_poly, int const *const c, const size_t len)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#a27ff2116f70bcbf5028219adcae4c5f0">poly_delete</a> (fmpz_poly_t poly)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#a3f53c63383ff301b20dcede0783869a7">poly_delete_array</a> (fmpz_poly_t **poly_array)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#a83297bc2ab5b6e7ce42553570dd8268f">poly_delete_all</a> (fmpz_poly_t poly,...)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#ae7d0d8364dba689df3fb4904610634cc">fmpz_poly_mod_unsigned</a> (fmpz_poly_t a, const uint32_t mod)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#a7c4f5e96355518dc97a23da8f34b661a">fmpz_poly_mod</a> (fmpz_poly_t a, const uint32_t mod)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#ab1f966fe680d1ce7c19c8c812d1932a7">fmpz_poly_set_coeff_fmpz_n</a> (fmpz_poly_t poly, slong n, const fmpz_t x)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#a59da1b7962829af8f18d58c05f588606">fmpz_invmod_ui</a> (fmpz_t f, const fmpz_t g, const uint32_t mod)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#ad2a11e832808ef1cfee0eed1cc02f4b9">fmpz_add_n</a> (fmpz_t f, const fmpz_t g, const fmpz_t h)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#ae96f479ddd97af709a0ed50817fd3fb3">poly_starmultiply</a> (const fmpz_poly_t a, const fmpz_poly_t b, fmpz_poly_t c, const <a class="el" href="structntru__params.html">ntru_params</a> *params, uint32_t modulus)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#ace66beb516186e52f9b5b1ed8a397849">poly_inverse_poly_q</a> (const fmpz_poly_t a, fmpz_poly_t Fq, const <a class="el" href="structntru__params.html">ntru_params</a> *params)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#ae77b2014df42e5ed612206d5930ac608">poly_inverse_poly_p</a> (const fmpz_poly_t a, fmpz_poly_t Fp, const <a class="el" href="structntru__params.html">ntru_params</a> *params)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#a80a8ce0f2944bc3df94291ef2f781498">poly_draw</a> (const fmpz_poly_t poly)</td></tr>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="ntru__poly_8c.html#aec098d00160d2d502eb1f8a7c3fa5453">poly_draw_pretty</a> (const fmpz_poly_t poly)</td></tr>
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</table>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
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<div class="textblock"><p>operations on polynomials </p>
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<p>This files purpose is to handle polynomials in general, allowing modification, arithmetic and common algorithms like inverting them. </p>
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<p>Definition in file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
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</div><hr/><h2>Function Documentation</h2>
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||
<a class="anchor" id="ad2a11e832808ef1cfee0eed1cc02f4b9"></a><!-- doxytag: member="ntru_poly.c::fmpz_add_n" ref="ad2a11e832808ef1cfee0eed1cc02f4b9" args="(fmpz_t f, const fmpz_t g, const fmpz_t h)" -->
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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 <a class="el" href="ntru__poly_8h.html#ad2a11e832808ef1cfee0eed1cc02f4b9">fmpz_add_n</a> </td>
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<td>(</td>
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<td class="paramtype">fmpz_t </td>
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<td class="paramname"><em>f</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_t </td>
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<td class="paramname"><em>g</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_t </td>
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<td class="paramname"><em>h</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>
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<div class="memdoc">
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<p>The same as fmpz_add() except that it handles NULL pointer for g and h. </p>
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<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00222">222</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
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</div>
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</div>
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<a class="anchor" id="aaaac83ec72414aa208832442657c3520"></a><!-- doxytag: member="ntru_poly.c::fmpz_cmp_si_n" ref="aaaac83ec72414aa208832442657c3520" args="(const fmpz_t f, slong g)" -->
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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">int <a class="el" href="ntru__poly_8h.html#aaaac83ec72414aa208832442657c3520">fmpz_cmp_si_n</a> </td>
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<td>(</td>
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<td class="paramtype">const fmpz_t </td>
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<td class="paramname"><em>f</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">slong </td>
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<td class="paramname"><em>g</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>
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<div class="memdoc">
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<p>The same as fmpz_cmp_si except that it will interpret f as a 0-coefficient if it is a NULL pointer.</p>
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<dl class="params"><dt><b>Parameters:</b></dt><dd>
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<table class="params">
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<tr><td class="paramname">f</td><td>the fmpz value to use for comparison </td></tr>
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<tr><td class="paramname">g</td><td>the signed long integer to use for comparison </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="return"><dt><b>Returns:</b></dt><dd>negative value if f < g, positiv evalue if g < f, otherwise 0 </dd></dl>
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<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00093">93</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
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</div>
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</div>
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<a class="anchor" id="a59da1b7962829af8f18d58c05f588606"></a><!-- doxytag: member="ntru_poly.c::fmpz_invmod_ui" ref="a59da1b7962829af8f18d58c05f588606" args="(fmpz_t f, const fmpz_t g, const uint32_t mod)" -->
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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">int <a class="el" href="ntru__poly_8h.html#a59da1b7962829af8f18d58c05f588606">fmpz_invmod_ui</a> </td>
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<td>(</td>
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<td class="paramtype">fmpz_t </td>
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<td class="paramname"><em>f</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_t </td>
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<td class="paramname"><em>g</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 uint32_t </td>
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<td class="paramname"><em>mod</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>
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<div class="memdoc">
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<p>Wrapper around fmpz_invmod() where we convert mod to an fmpz_t implicitly.</p>
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<dl class="params"><dt><b>Parameters:</b></dt><dd>
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<table class="params">
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<tr><td class="paramname">f</td><td>result [out] </td></tr>
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<tr><td class="paramname">g</td><td>the inverse </td></tr>
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<tr><td class="paramname">mod</td><td>the modulo </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__poly_8c_source.html#l00210">210</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
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</div>
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</div>
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<a class="anchor" id="a7c4f5e96355518dc97a23da8f34b661a"></a><!-- doxytag: member="ntru_poly.c::fmpz_poly_mod" ref="a7c4f5e96355518dc97a23da8f34b661a" args="(fmpz_poly_t a, const uint32_t mod)" -->
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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 <a class="el" href="ntru__poly_8h.html#a7c4f5e96355518dc97a23da8f34b661a">fmpz_poly_mod</a> </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>a</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 uint32_t </td>
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<td class="paramname"><em>mod</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>
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<div class="memdoc">
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<p>Calls fmpz_poly_get_nmod_poly() and fmpz_poly_set_nmod_poly() in a row, so we don't have to deal with the intermediate nmod_poly_t type if we don't need it.</p>
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<p>This also normalises the coefficients to the interval -m/2 <= r < m/2.</p>
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<dl class="params"><dt><b>Parameters:</b></dt><dd>
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<table class="params">
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<tr><td class="paramname">a</td><td>the polynom to apply the modulus to </td></tr>
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<tr><td class="paramname">mod</td><td>the modulus </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__poly_8c_source.html#l00182">182</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
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</div>
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</div>
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<a class="anchor" id="ae7d0d8364dba689df3fb4904610634cc"></a><!-- doxytag: member="ntru_poly.c::fmpz_poly_mod_unsigned" ref="ae7d0d8364dba689df3fb4904610634cc" args="(fmpz_poly_t a, const uint32_t mod)" -->
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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 <a class="el" href="ntru__poly_8h.html#ae7d0d8364dba689df3fb4904610634cc">fmpz_poly_mod_unsigned</a> </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>a</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 uint32_t </td>
|
||
<td class="paramname"><em>mod</em> </td>
|
||
</tr>
|
||
<tr>
|
||
<td></td>
|
||
<td>)</td>
|
||
<td></td><td></td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
<div class="memdoc">
|
||
<p>Calls fmpz_poly_get_nmod_poly() and fmpz_poly_set_nmod_poly_unsigned() in a row, so we don't have to deal with the intermediate nmod_poly_t type if we don't need it.</p>
|
||
<p>This also normalises the coefficients to the interval 0 <= r < m.</p>
|
||
<dl class="params"><dt><b>Parameters:</b></dt><dd>
|
||
<table class="params">
|
||
<tr><td class="paramname">a</td><td>the polynom to apply the modulus to </td></tr>
|
||
<tr><td class="paramname">mod</td><td>the modulus </td></tr>
|
||
</table>
|
||
</dd>
|
||
</dl>
|
||
|
||
<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00166">166</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
|
||
|
||
</div>
|
||
</div>
|
||
<a class="anchor" id="ab1f966fe680d1ce7c19c8c812d1932a7"></a><!-- doxytag: member="ntru_poly.c::fmpz_poly_set_coeff_fmpz_n" ref="ab1f966fe680d1ce7c19c8c812d1932a7" args="(fmpz_poly_t poly, slong n, const fmpz_t x)" -->
|
||
<div class="memitem">
|
||
<div class="memproto">
|
||
<table class="memname">
|
||
<tr>
|
||
<td class="memname">void <a class="el" href="ntru__poly_8h.html#ab1f966fe680d1ce7c19c8c812d1932a7">fmpz_poly_set_coeff_fmpz_n</a> </td>
|
||
<td>(</td>
|
||
<td class="paramtype">fmpz_poly_t </td>
|
||
<td class="paramname"><em>poly</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">slong </td>
|
||
<td class="paramname"><em>n</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">const fmpz_t </td>
|
||
<td class="paramname"><em>x</em> </td>
|
||
</tr>
|
||
<tr>
|
||
<td></td>
|
||
<td>)</td>
|
||
<td></td><td></td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
<div class="memdoc">
|
||
<p>The same as fmpz_poly_set_coeff_fmpz() except that it will take care of null-pointer coefficients and use fmpz_poly_set_coeff_si() in that case.</p>
|
||
<dl class="params"><dt><b>Parameters:</b></dt><dd>
|
||
<table class="params">
|
||
<tr><td class="paramname">poly</td><td>the polynom we want to change a coefficient of </td></tr>
|
||
<tr><td class="paramname">n</td><td>the coefficient we want to set </td></tr>
|
||
<tr><td class="paramname">x</td><td>the value to assign to the coefficient </td></tr>
|
||
</table>
|
||
</dd>
|
||
</dl>
|
||
|
||
<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00198">198</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
|
||
|
||
</div>
|
||
</div>
|
||
<a class="anchor" id="a27ff2116f70bcbf5028219adcae4c5f0"></a><!-- doxytag: member="ntru_poly.c::poly_delete" ref="a27ff2116f70bcbf5028219adcae4c5f0" args="(fmpz_poly_t poly)" -->
|
||
<div class="memitem">
|
||
<div class="memproto">
|
||
<table class="memname">
|
||
<tr>
|
||
<td class="memname">void <a class="el" href="ntru_8h.html#a27ff2116f70bcbf5028219adcae4c5f0">poly_delete</a> </td>
|
||
<td>(</td>
|
||
<td class="paramtype">fmpz_poly_t </td>
|
||
<td class="paramname"><em>poly</em></td><td>)</td>
|
||
<td></td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
<div class="memdoc">
|
||
<p>This deletes the internal structure of a polynomial, and frees the pointer.</p>
|
||
<dl class="params"><dt><b>Parameters:</b></dt><dd>
|
||
<table class="params">
|
||
<tr><td class="paramname">poly</td><td>the polynomial to delete </td></tr>
|
||
</table>
|
||
</dd>
|
||
</dl>
|
||
|
||
<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00123">123</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
|
||
|
||
</div>
|
||
</div>
|
||
<a class="anchor" id="a83297bc2ab5b6e7ce42553570dd8268f"></a><!-- doxytag: member="ntru_poly.c::poly_delete_all" ref="a83297bc2ab5b6e7ce42553570dd8268f" args="(fmpz_poly_t poly,...)" -->
|
||
<div class="memitem">
|
||
<div class="memproto">
|
||
<table class="memname">
|
||
<tr>
|
||
<td class="memname">void <a class="el" href="ntru_8h.html#a83297bc2ab5b6e7ce42553570dd8268f">poly_delete_all</a> </td>
|
||
<td>(</td>
|
||
<td class="paramtype">fmpz_poly_t </td>
|
||
<td class="paramname"><em>poly</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype"> </td>
|
||
<td class="paramname"><em>...</em> </td>
|
||
</tr>
|
||
<tr>
|
||
<td></td>
|
||
<td>)</td>
|
||
<td></td><td></td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
<div class="memdoc">
|
||
<p>This deletes the internal structure of all polynomials, and frees the pointers. You must call this with NULL as last argument!</p>
|
||
<dl class="params"><dt><b>Parameters:</b></dt><dd>
|
||
<table class="params">
|
||
<tr><td class="paramname">poly</td><td>the polynomial to delete </td></tr>
|
||
<tr><td class="paramname">...</td><td>follow up polynomials </td></tr>
|
||
</table>
|
||
</dd>
|
||
</dl>
|
||
|
||
<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00149">149</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
|
||
|
||
</div>
|
||
</div>
|
||
<a class="anchor" id="a3f53c63383ff301b20dcede0783869a7"></a><!-- doxytag: member="ntru_poly.c::poly_delete_array" ref="a3f53c63383ff301b20dcede0783869a7" args="(fmpz_poly_t **poly_array)" -->
|
||
<div class="memitem">
|
||
<div class="memproto">
|
||
<table class="memname">
|
||
<tr>
|
||
<td class="memname">void <a class="el" href="ntru_8h.html#a3f53c63383ff301b20dcede0783869a7">poly_delete_array</a> </td>
|
||
<td>(</td>
|
||
<td class="paramtype">fmpz_poly_t ** </td>
|
||
<td class="paramname"><em>poly_array</em></td><td>)</td>
|
||
<td></td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
<div class="memdoc">
|
||
<p>Delete the internal structure of a polynomial array which must be NULL terminated. It is expected that poly_array is not on the stack and was obtained by a function like ascii_to_poly().</p>
|
||
<dl class="params"><dt><b>Parameters:</b></dt><dd>
|
||
<table class="params">
|
||
<tr><td class="paramname">poly_array</td><td>the polynomial array </td></tr>
|
||
</table>
|
||
</dd>
|
||
</dl>
|
||
|
||
<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00131">131</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
|
||
|
||
</div>
|
||
</div>
|
||
<a class="anchor" id="a80a8ce0f2944bc3df94291ef2f781498"></a><!-- doxytag: member="ntru_poly.c::poly_draw" ref="a80a8ce0f2944bc3df94291ef2f781498" args="(const fmpz_poly_t poly)" -->
|
||
<div class="memitem">
|
||
<div class="memproto">
|
||
<table class="memname">
|
||
<tr>
|
||
<td class="memname">void <a class="el" href="ntru_8h.html#a80a8ce0f2944bc3df94291ef2f781498">poly_draw</a> </td>
|
||
<td>(</td>
|
||
<td class="paramtype">const fmpz_poly_t </td>
|
||
<td class="paramname"><em>poly</em></td><td>)</td>
|
||
<td></td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
<div class="memdoc">
|
||
<p>Draws a polynomial to stdout.</p>
|
||
<dl class="params"><dt><b>Parameters:</b></dt><dd>
|
||
<table class="params">
|
||
<tr><td class="paramname">poly</td><td>draw this </td></tr>
|
||
</table>
|
||
</dd>
|
||
</dl>
|
||
|
||
<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00574">574</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
|
||
|
||
</div>
|
||
</div>
|
||
<a class="anchor" id="aec098d00160d2d502eb1f8a7c3fa5453"></a><!-- doxytag: member="ntru_poly.c::poly_draw_pretty" ref="aec098d00160d2d502eb1f8a7c3fa5453" args="(const fmpz_poly_t poly)" -->
|
||
<div class="memitem">
|
||
<div class="memproto">
|
||
<table class="memname">
|
||
<tr>
|
||
<td class="memname">void <a class="el" href="ntru_8h.html#aec098d00160d2d502eb1f8a7c3fa5453">poly_draw_pretty</a> </td>
|
||
<td>(</td>
|
||
<td class="paramtype">const fmpz_poly_t </td>
|
||
<td class="paramname"><em>poly</em></td><td>)</td>
|
||
<td></td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
<div class="memdoc">
|
||
<p>Draws a polynomial to stdout, in pretty format.</p>
|
||
<dl class="params"><dt><b>Parameters:</b></dt><dd>
|
||
<table class="params">
|
||
<tr><td class="paramname">poly</td><td>draw this </td></tr>
|
||
</table>
|
||
</dd>
|
||
</dl>
|
||
|
||
<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00583">583</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
|
||
|
||
</div>
|
||
</div>
|
||
<a class="anchor" id="ae77b2014df42e5ed612206d5930ac608"></a><!-- doxytag: member="ntru_poly.c::poly_inverse_poly_p" ref="ae77b2014df42e5ed612206d5930ac608" args="(const fmpz_poly_t a, fmpz_poly_t Fp, const ntru_params *params)" -->
|
||
<div class="memitem">
|
||
<div class="memproto">
|
||
<table class="memname">
|
||
<tr>
|
||
<td class="memname">bool <a class="el" href="ntru__poly_8h.html#ae77b2014df42e5ed612206d5930ac608">poly_inverse_poly_p</a> </td>
|
||
<td>(</td>
|
||
<td class="paramtype">const fmpz_poly_t </td>
|
||
<td class="paramname"><em>a</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">fmpz_poly_t </td>
|
||
<td class="paramname"><em>Fp</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">const <a class="el" href="structntru__params.html">ntru_params</a> * </td>
|
||
<td class="paramname"><em>params</em> </td>
|
||
</tr>
|
||
<tr>
|
||
<td></td>
|
||
<td>)</td>
|
||
<td></td><td></td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
<div class="memdoc">
|
||
<p>Compute the inverse of a polynomial in (Z/pZ)[X]/(X^N - 1). See NTRU Cryptosystems Tech Report #014 "Almost Inverses
|
||
and Fast NTRU Key Creation."</p>
|
||
<dl class="params"><dt><b>Parameters:</b></dt><dd>
|
||
<table class="params">
|
||
<tr><td class="paramname">a</td><td>polynomial to invert </td></tr>
|
||
<tr><td class="paramname">Fp</td><td>polynomial [out] </td></tr>
|
||
<tr><td class="paramname">params</td><td>NTRU parameters </td></tr>
|
||
</table>
|
||
</dd>
|
||
</dl>
|
||
<dl class="return"><dt><b>Returns:</b></dt><dd>true if invertible, false if not </dd></dl>
|
||
|
||
<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00409">409</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
|
||
|
||
</div>
|
||
</div>
|
||
<a class="anchor" id="ace66beb516186e52f9b5b1ed8a397849"></a><!-- doxytag: member="ntru_poly.c::poly_inverse_poly_q" ref="ace66beb516186e52f9b5b1ed8a397849" args="(const fmpz_poly_t a, fmpz_poly_t Fq, const ntru_params *params)" -->
|
||
<div class="memitem">
|
||
<div class="memproto">
|
||
<table class="memname">
|
||
<tr>
|
||
<td class="memname">bool <a class="el" href="ntru__poly_8h.html#ace66beb516186e52f9b5b1ed8a397849">poly_inverse_poly_q</a> </td>
|
||
<td>(</td>
|
||
<td class="paramtype">const fmpz_poly_t </td>
|
||
<td class="paramname"><em>a</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">fmpz_poly_t </td>
|
||
<td class="paramname"><em>Fq</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">const <a class="el" href="structntru__params.html">ntru_params</a> * </td>
|
||
<td class="paramname"><em>params</em> </td>
|
||
</tr>
|
||
<tr>
|
||
<td></td>
|
||
<td>)</td>
|
||
<td></td><td></td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
<div class="memdoc">
|
||
<p>Compute the inverse of a polynomial in modulo a power of 2, which is q. This is based off the pseudo-code for "Inversion
|
||
in (Z/2Z)[X](X^N - 1)" and "Inversion in (Z/p^r Z)[X](X^N - 1)". See NTRU Cryptosystems Tech Report #014 "Almost Inverses
|
||
and Fast NTRU Key Creation."</p>
|
||
<dl class="params"><dt><b>Parameters:</b></dt><dd>
|
||
<table class="params">
|
||
<tr><td class="paramname">a</td><td>polynomial to invert (is allowed to be the same as param Fq) </td></tr>
|
||
<tr><td class="paramname">Fq</td><td>polynomial [out] </td></tr>
|
||
<tr><td class="paramname">params</td><td>NTRU parameters </td></tr>
|
||
</table>
|
||
</dd>
|
||
</dl>
|
||
<dl class="return"><dt><b>Returns:</b></dt><dd>true if invertible, false if not </dd></dl>
|
||
|
||
<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00297">297</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
|
||
|
||
</div>
|
||
</div>
|
||
<a class="anchor" id="a891af13dc4355c9fab9ca3fafcac8054"></a><!-- doxytag: member="ntru_poly.c::poly_mod2_to_modq" ref="a891af13dc4355c9fab9ca3fafcac8054" args="(const fmpz_poly_t a, fmpz_poly_t Fq, const ntru_params *params)" -->
|
||
<div class="memitem">
|
||
<div class="memproto">
|
||
<table class="memname">
|
||
<tr>
|
||
<td class="memname">static void <a class="el" href="ntru__poly_8c.html#a891af13dc4355c9fab9ca3fafcac8054">poly_mod2_to_modq</a> </td>
|
||
<td>(</td>
|
||
<td class="paramtype">const fmpz_poly_t </td>
|
||
<td class="paramname"><em>a</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">fmpz_poly_t </td>
|
||
<td class="paramname"><em>Fq</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">const <a class="el" href="structntru__params.html">ntru_params</a> * </td>
|
||
<td class="paramname"><em>params</em> </td>
|
||
</tr>
|
||
<tr>
|
||
<td></td>
|
||
<td>)</td>
|
||
<td></td><td><code> [static]</code></td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
<div class="memdoc">
|
||
<p>Find the inverse polynomial modulo a power of 2, which is q.</p>
|
||
<dl class="params"><dt><b>Parameters:</b></dt><dd>
|
||
<table class="params">
|
||
<tr><td class="paramname">a</td><td>polynomial to invert </td></tr>
|
||
<tr><td class="paramname">Fq</td><td>polynomial [out] </td></tr>
|
||
<tr><td class="paramname">params</td><td>NTRU parameters </td></tr>
|
||
</table>
|
||
</dd>
|
||
</dl>
|
||
|
||
<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00063">63</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
|
||
|
||
</div>
|
||
</div>
|
||
<a class="anchor" id="a20f86085d5eb5372fd25dc270069d38c"></a><!-- doxytag: member="ntru_poly.c::poly_new" ref="a20f86085d5eb5372fd25dc270069d38c" args="(fmpz_poly_t new_poly, int const *const c, const size_t len)" -->
|
||
<div class="memitem">
|
||
<div class="memproto">
|
||
<table class="memname">
|
||
<tr>
|
||
<td class="memname">void <a class="el" href="ntru_8h.html#a20f86085d5eb5372fd25dc270069d38c">poly_new</a> </td>
|
||
<td>(</td>
|
||
<td class="paramtype">fmpz_poly_t </td>
|
||
<td class="paramname"><em>new_poly</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">int const *const </td>
|
||
<td class="paramname"><em>c</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">const size_t </td>
|
||
<td class="paramname"><em>len</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>
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<div class="memdoc">
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<p>Initializes and builds a polynomial with the coefficient values of c[] of size len within NTRU parameters and returns a newly allocated polynomial. For an empty polynom, both c and len can be NULL/0.</p>
|
||
<dl class="params"><dt><b>Parameters:</b></dt><dd>
|
||
<table class="params">
|
||
<tr><td class="paramname">new_poly</td><td>the polynomial to initialize and fill with coefficients [out] </td></tr>
|
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<tr><td class="paramname">c</td><td>array of polynomial coefficients, can be NULL </td></tr>
|
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<tr><td class="paramname">len</td><td>size of the coefficient array, can be 0 </td></tr>
|
||
</table>
|
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</dd>
|
||
</dl>
|
||
<dl class="return"><dt><b>Returns:</b></dt><dd>newly allocated polynomial pointer, must be freed with fmpz_poly_clear() </dd></dl>
|
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|
||
<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00110">110</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
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</div>
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</div>
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||
<a class="anchor" id="ae96f479ddd97af709a0ed50817fd3fb3"></a><!-- doxytag: member="ntru_poly.c::poly_starmultiply" ref="ae96f479ddd97af709a0ed50817fd3fb3" args="(const fmpz_poly_t a, const fmpz_poly_t b, fmpz_poly_t c, const ntru_params *params, uint32_t modulus)" -->
|
||
<div class="memitem">
|
||
<div class="memproto">
|
||
<table class="memname">
|
||
<tr>
|
||
<td class="memname">void <a class="el" href="ntru__poly_8h.html#ae96f479ddd97af709a0ed50817fd3fb3">poly_starmultiply</a> </td>
|
||
<td>(</td>
|
||
<td class="paramtype">const fmpz_poly_t </td>
|
||
<td class="paramname"><em>a</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">const fmpz_poly_t </td>
|
||
<td class="paramname"><em>b</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">fmpz_poly_t </td>
|
||
<td class="paramname"><em>c</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">const <a class="el" href="structntru__params.html">ntru_params</a> * </td>
|
||
<td class="paramname"><em>params</em>, </td>
|
||
</tr>
|
||
<tr>
|
||
<td class="paramkey"></td>
|
||
<td></td>
|
||
<td class="paramtype">uint32_t </td>
|
||
<td class="paramname"><em>modulus</em> </td>
|
||
</tr>
|
||
<tr>
|
||
<td></td>
|
||
<td>)</td>
|
||
<td></td><td></td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
<div class="memdoc">
|
||
<p>Starmultiplication, as follows: c = a * b mod (x^N − 1)</p>
|
||
<dl class="params"><dt><b>Parameters:</b></dt><dd>
|
||
<table class="params">
|
||
<tr><td class="paramname">a</td><td>polynom to multiply (can be the same as c) </td></tr>
|
||
<tr><td class="paramname">b</td><td>polynom to multiply </td></tr>
|
||
<tr><td class="paramname">c</td><td>polynom [out] </td></tr>
|
||
<tr><td class="paramname">params</td><td>NTRU parameters </td></tr>
|
||
<tr><td class="paramname">modulus</td><td>whether we use p or q </td></tr>
|
||
</table>
|
||
</dd>
|
||
</dl>
|
||
|
||
<p>Definition at line <a class="el" href="ntru__poly_8c_source.html#l00239">239</a> of file <a class="el" href="ntru__poly_8c_source.html">ntru_poly.c</a>.</p>
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