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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="ntru__keypair_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Copyright (C) 2014 FH Bielefeld</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * This file is part of a FH Bielefeld project.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * modify it under the terms of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * License as published by the Free Software Foundation; either</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * version 2.1 of the License, or (at your option) any later version.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * This library is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * Lesser General Public License for more details.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> * License along with this library; if not, write to the Free Software</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment"> * MA 02110-1301 USA</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ntru__ascii__poly_8h.html">ntru_ascii_poly.h</a>&quot;</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ntru__file_8h.html">ntru_file.h</a>&quot;</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ntru__keypair_8h.html">ntru_keypair.h</a>&quot;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ntru__params_8h.html">ntru_params.h</a>&quot;</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ntru__poly_8h.html">ntru_poly.h</a>&quot;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ntru__poly__ascii_8h.html">ntru_poly_ascii.h</a>&quot;</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ntru__string_8h.html">ntru_string.h</a>&quot;</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="preprocessor">#include &lt;fmpz_poly.h&gt;</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="preprocessor">#include &lt;fmpz.h&gt;</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="preprocessor">#include &lt;stdbool.h&gt;</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="comment">/*------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;<span class="keywordtype">bool</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="keypair_8h.html#a6873d41211a92c4f6b0074ef34ae1743"> 47</a></span>&#160;<a class="code" href="ntru__keypair_8c.html#a6873d41211a92c4f6b0074ef34ae1743">ntru_create_keypair</a>(</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; fmpz_poly_t f,</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; fmpz_poly_t g,</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <a class="code" href="structkeypair.html">keypair</a> *pair,</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <a class="code" href="structntru__params.html">ntru_params</a> *params)</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;{</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordtype">bool</span> retval = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; fmpz_poly_t Fq,</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; Fp,</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; pub;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keywordflow">if</span> (!f || !g || !params)</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keywordflow">goto</span> _return;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; fmpz_poly_init(Fq);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; fmpz_poly_init(Fp);</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; fmpz_poly_init(pub);</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="ntru__poly_8c.html#ace66beb516186e52f9b5b1ed8a397849">poly_inverse_poly_q</a>(f, Fq, params))</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keywordflow">goto</span> _cleanup;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="ntru__poly_8c.html#ae77b2014df42e5ed612206d5930ac608">poly_inverse_poly_p</a>(f, Fp, params))</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keywordflow">goto</span> _cleanup;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <a class="code" href="ntru__poly_8c.html#ae96f479ddd97af709a0ed50817fd3fb3">poly_starmultiply</a>(Fq, g, pub, params, params-&gt;<a class="code" href="structntru__params.html#a29680750bda49dc93e61a752b2f2a0f7">q</a>);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; fmpz_poly_scalar_mul_ui(pub, pub, params-&gt;<a class="code" href="structntru__params.html#a41b368825e1eb126604e13e8f549ec8f">p</a>);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <a class="code" href="ntru__poly_8c.html#ae7d0d8364dba689df3fb4904610634cc">fmpz_poly_mod_unsigned</a>(pub, params-&gt;<a class="code" href="structntru__params.html#a29680750bda49dc93e61a752b2f2a0f7">q</a>);</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; fmpz_poly_init(pair-&gt;<a class="code" href="structkeypair.html#a9e9805ad001216da53f2c57accb288e1">priv</a>);</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; fmpz_poly_init(pair-&gt;<a class="code" href="structkeypair.html#a9e63f1d275b91c9d9716fb4069461799">priv_inv</a>);</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; fmpz_poly_init(pair-&gt;<a class="code" href="structkeypair.html#afa635c70f233d0b7449b4a17513646c4">pub</a>);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; fmpz_poly_set(pair-&gt;<a class="code" href="structkeypair.html#a9e9805ad001216da53f2c57accb288e1">priv</a>, f);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; fmpz_poly_set(pair-&gt;<a class="code" href="structkeypair.html#a9e63f1d275b91c9d9716fb4069461799">priv_inv</a>, Fp);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; fmpz_poly_set(pair-&gt;<a class="code" href="structkeypair.html#afa635c70f233d0b7449b4a17513646c4">pub</a>, pub);</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; retval = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;_cleanup:</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; fmpz_poly_clear(Fq);</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; fmpz_poly_clear(Fp);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; fmpz_poly_clear(pub);</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;_return:</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordflow">return</span> retval;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;}</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="comment">/*------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="keypair_8h.html#a41741ed660cb806c47335f66055e1bdd"> 96</a></span>&#160;<a class="code" href="ntru__keypair_8c.html#a41741ed660cb806c47335f66055e1bdd">export_public_key</a>(<span class="keywordtype">char</span> <span class="keyword">const</span> * <span class="keyword">const</span> filename,</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; fmpz_poly_t pub,</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <a class="code" href="structntru__params.html">ntru_params</a> *params)</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;{</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordtype">string</span> *pub_string;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; pub_string = <a class="code" href="ntru__poly__ascii_8c.html#a4ba0179e3ae0d5e721ff8429a8265e80">poly_to_base64</a>(pub, params);</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; <a class="code" href="ntru__file_8c.html#a1f8eef5ea12c77ed2491d96864eb0d43">write_file</a>(pub_string, filename);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <a class="code" href="ntru__string_8c.html#ac1b5f66fbbbdfc7901357ddcfec52e5a">string_delete</a>(pub_string);</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;}</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;<span class="comment">/*------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="keypair_8h.html#afa29f14a14486d3f6b979ee900d7e738"> 111</a></span>&#160;<a class="code" href="ntru__keypair_8c.html#afa29f14a14486d3f6b979ee900d7e738">export_priv_key</a>(<span class="keywordtype">char</span> <span class="keyword">const</span> * <span class="keyword">const</span> filename,</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; fmpz_poly_t priv,</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; <a class="code" href="structntru__params.html">ntru_params</a> *params)</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;{</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="keywordtype">string</span> *priv_string;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; fmpz_poly_t priv_u;</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; fmpz_poly_init(priv_u);</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; fmpz_poly_set(priv_u, priv);</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; <a class="code" href="ntru__poly_8c.html#ae7d0d8364dba689df3fb4904610634cc">fmpz_poly_mod_unsigned</a>(priv_u, params-&gt;<a class="code" href="structntru__params.html#a41b368825e1eb126604e13e8f549ec8f">p</a>);</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; priv_string = <a class="code" href="ntru__poly__ascii_8c.html#a4ba0179e3ae0d5e721ff8429a8265e80">poly_to_base64</a>(priv_u, params);</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <a class="code" href="ntru__file_8c.html#a1f8eef5ea12c77ed2491d96864eb0d43">write_file</a>(priv_string, filename);</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; fmpz_poly_clear(priv_u);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; <a class="code" href="ntru__string_8c.html#ac1b5f66fbbbdfc7901357ddcfec52e5a">string_delete</a>(priv_string);</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;}</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="comment">/*------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"><a class="line" href="keypair_8h.html#a4e2c6da04c55e8c1b6c447f4cc9f1d6f"> 132</a></span>&#160;<a class="code" href="ntru__keypair_8c.html#a4e2c6da04c55e8c1b6c447f4cc9f1d6f">import_public_key</a>(<span class="keywordtype">char</span> <span class="keyword">const</span> * <span class="keyword">const</span> filename,</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; fmpz_poly_t pub,</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <a class="code" href="structntru__params.html">ntru_params</a> *params)</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;{</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <span class="keywordtype">string</span> *pub_string;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; fmpz_poly_t **imported;</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; pub_string = <a class="code" href="ntru__file_8c.html#a348c2a56837571f410d44631abc09dc4">read_file</a>(filename);</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; imported = <a class="code" href="ntru__ascii__poly_8c.html#a8460cd27ad4562f560bb304609a3e06d">base64_to_poly_arr</a>(pub_string, params);</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; <span class="comment">/* if the array exceeds one element, then something</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="comment"> * went horribly wrong */</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; <span class="keywordflow">if</span> (*imported[1])</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <a class="code" href="ntru__err_8h.html#a5d4dd1c1539c408c0dcd915750e8f224">NTRU_ABORT_DEBUG</a>(<span class="stringliteral">&quot;Failed importing public key!&quot;</span>);</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; fmpz_poly_set(pub, **imported);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; <a class="code" href="ntru__string_8c.html#ac1b5f66fbbbdfc7901357ddcfec52e5a">string_delete</a>(pub_string);</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; <a class="code" href="ntru__poly_8c.html#a3f53c63383ff301b20dcede0783869a7">poly_delete_array</a>(imported);</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; free(imported);</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;}</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;<span class="comment">/*------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"><a class="line" href="keypair_8h.html#a1f917ea6ef5302826c888e5c88e0869e"> 157</a></span>&#160;<a class="code" href="ntru__keypair_8c.html#a1f917ea6ef5302826c888e5c88e0869e">import_priv_key</a>(<span class="keywordtype">char</span> <span class="keyword">const</span> * <span class="keyword">const</span> filename,</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; fmpz_poly_t priv,</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; fmpz_poly_t priv_inv,</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; <a class="code" href="structntru__params.html">ntru_params</a> *params)</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;{</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; <span class="keywordtype">string</span> *pub_string;</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; fmpz_poly_t **imported,</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; Fp;</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; fmpz_poly_init(Fp);</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160;</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; pub_string = <a class="code" href="ntru__file_8c.html#a348c2a56837571f410d44631abc09dc4">read_file</a>(filename);</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; imported = <a class="code" href="ntru__ascii__poly_8c.html#a8460cd27ad4562f560bb304609a3e06d">base64_to_poly_arr</a>(pub_string, params);</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <a class="code" href="ntru__poly_8c.html#a7c4f5e96355518dc97a23da8f34b661a">fmpz_poly_mod</a>(**imported, params-&gt;<a class="code" href="structntru__params.html#a41b368825e1eb126604e13e8f549ec8f">p</a>);</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; <span class="comment">/* if the array exceeds one element, then something</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160;<span class="comment"> * went horribly wrong */</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; <span class="keywordflow">if</span> (*imported[1])</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <a class="code" href="ntru__err_8h.html#a5d4dd1c1539c408c0dcd915750e8f224">NTRU_ABORT_DEBUG</a>(<span class="stringliteral">&quot;Failed importing private key!&quot;</span>);</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; fmpz_poly_set(priv, **imported);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <span class="keywordflow">if</span> (!<a class="code" href="ntru__poly_8c.html#ae77b2014df42e5ed612206d5930ac608">poly_inverse_poly_p</a>(priv, Fp, params))</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; <span class="keywordflow">goto</span> cleanup;</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; <a class="code" href="ntru__poly_8c.html#a7c4f5e96355518dc97a23da8f34b661a">fmpz_poly_mod</a>(Fp, params-&gt;<a class="code" href="structntru__params.html#a41b368825e1eb126604e13e8f549ec8f">p</a>);</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; fmpz_poly_set(priv_inv, Fp);</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; fmpz_poly_clear(Fp);</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160;</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;cleanup:</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; <a class="code" href="ntru__string_8c.html#ac1b5f66fbbbdfc7901357ddcfec52e5a">string_delete</a>(pub_string);</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; <a class="code" href="ntru__poly_8c.html#a3f53c63383ff301b20dcede0783869a7">poly_delete_array</a>(imported);</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; free(imported);</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160;}</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160;</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160;<span class="comment">/*------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160;<span class="keywordtype">void</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"><a class="line" href="keypair_8h.html#a5279c4990bc22bb9e735fe36372a6786"> 197</a></span>&#160;<a class="code" href="ntru__keypair_8c.html#a5279c4990bc22bb9e735fe36372a6786">ntru_delete_keypair</a>(<a class="code" href="structkeypair.html">keypair</a> *pair)</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160;{</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; fmpz_poly_clear(pair-&gt;<a class="code" href="structkeypair.html#a9e63f1d275b91c9d9716fb4069461799">priv_inv</a>);</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; fmpz_poly_clear(pair-&gt;<a class="code" href="structkeypair.html#a9e9805ad001216da53f2c57accb288e1">priv</a>);</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; fmpz_poly_clear(pair-&gt;<a class="code" href="structkeypair.html#afa635c70f233d0b7449b4a17513646c4">pub</a>);</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160;}</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160;</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160;<span class="comment">/*------------------------------------------------------------------------*/</span></div>
<div class="ttc" id="ntru__poly_8c_html_ace66beb516186e52f9b5b1ed8a397849"><div class="ttname"><a href="ntru__poly_8c.html#ace66beb516186e52f9b5b1ed8a397849">poly_inverse_poly_q</a></div><div class="ttdeci">bool poly_inverse_poly_q(const fmpz_poly_t a, fmpz_poly_t Fq, const ntru_params *params)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__poly_8c_source.html#l00297">ntru_poly.c:297</a></div></div>
<div class="ttc" id="ntru__string_8c_html_ac1b5f66fbbbdfc7901357ddcfec52e5a"><div class="ttname"><a href="ntru__string_8c.html#ac1b5f66fbbbdfc7901357ddcfec52e5a">string_delete</a></div><div class="ttdeci">void string_delete(string *del_string)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__string_8c_source.html#l00047">ntru_string.c:47</a></div></div>
<div class="ttc" id="ntru__keypair_8h_html"><div class="ttname"><a href="ntru__keypair_8h.html">ntru_keypair.h</a></div><div class="ttdoc">header for ntru_keypair.c </div></div>
<div class="ttc" id="ntru__keypair_8c_html_a5279c4990bc22bb9e735fe36372a6786"><div class="ttname"><a href="ntru__keypair_8c.html#a5279c4990bc22bb9e735fe36372a6786">ntru_delete_keypair</a></div><div class="ttdeci">void ntru_delete_keypair(keypair *pair)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__keypair_8c_source.html#l00197">ntru_keypair.c:197</a></div></div>
<div class="ttc" id="ntru__poly_8c_html_ae7d0d8364dba689df3fb4904610634cc"><div class="ttname"><a href="ntru__poly_8c.html#ae7d0d8364dba689df3fb4904610634cc">fmpz_poly_mod_unsigned</a></div><div class="ttdeci">void fmpz_poly_mod_unsigned(fmpz_poly_t a, const uint32_t mod)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__poly_8c_source.html#l00166">ntru_poly.c:166</a></div></div>
<div class="ttc" id="ntru__file_8c_html_a1f8eef5ea12c77ed2491d96864eb0d43"><div class="ttname"><a href="ntru__file_8c.html#a1f8eef5ea12c77ed2491d96864eb0d43">write_file</a></div><div class="ttdeci">bool write_file(string const *wstring, char const *const filename)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__file_8c_source.html#l00107">ntru_file.c:107</a></div></div>
<div class="ttc" id="ntru__poly_8c_html_a7c4f5e96355518dc97a23da8f34b661a"><div class="ttname"><a href="ntru__poly_8c.html#a7c4f5e96355518dc97a23da8f34b661a">fmpz_poly_mod</a></div><div class="ttdeci">void fmpz_poly_mod(fmpz_poly_t a, const uint32_t mod)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__poly_8c_source.html#l00182">ntru_poly.c:182</a></div></div>
<div class="ttc" id="ntru__err_8h_html_a5d4dd1c1539c408c0dcd915750e8f224"><div class="ttname"><a href="ntru__err_8h.html#a5d4dd1c1539c408c0dcd915750e8f224">NTRU_ABORT_DEBUG</a></div><div class="ttdeci">#define NTRU_ABORT_DEBUG(...)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__err_8h_source.html#l00039">ntru_err.h:39</a></div></div>
<div class="ttc" id="structntru__params_html_a41b368825e1eb126604e13e8f549ec8f"><div class="ttname"><a href="structntru__params.html#a41b368825e1eb126604e13e8f549ec8f">ntru_params::p</a></div><div class="ttdeci">uint32_t p</div><div class="ttdef"><b>Definition:</b> <a href="ntru__params_8h_source.html#l00056">ntru_params.h:56</a></div></div>
<div class="ttc" id="ntru__poly_8c_html_ae77b2014df42e5ed612206d5930ac608"><div class="ttname"><a href="ntru__poly_8c.html#ae77b2014df42e5ed612206d5930ac608">poly_inverse_poly_p</a></div><div class="ttdeci">bool poly_inverse_poly_p(const fmpz_poly_t a, fmpz_poly_t Fp, const ntru_params *params)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__poly_8c_source.html#l00409">ntru_poly.c:409</a></div></div>
<div class="ttc" id="ntru__ascii__poly_8c_html_a8460cd27ad4562f560bb304609a3e06d"><div class="ttname"><a href="ntru__ascii__poly_8c.html#a8460cd27ad4562f560bb304609a3e06d">base64_to_poly_arr</a></div><div class="ttdeci">fmpz_poly_t ** base64_to_poly_arr(const string *to_poly, const ntru_params *params)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__ascii__poly_8c_source.html#l00146">ntru_ascii_poly.c:146</a></div></div>
<div class="ttc" id="structntru__params_html"><div class="ttname"><a href="structntru__params.html">ntru_params</a></div><div class="ttdef"><b>Definition:</b> <a href="ntru__params_8h_source.html#l00043">ntru_params.h:43</a></div></div>
<div class="ttc" id="ntru__file_8h_html"><div class="ttname"><a href="ntru__file_8h.html">ntru_file.h</a></div><div class="ttdoc">header for ntru_file.c </div></div>
<div class="ttc" id="structkeypair_html_a9e63f1d275b91c9d9716fb4069461799"><div class="ttname"><a href="structkeypair.html#a9e63f1d275b91c9d9716fb4069461799">keypair::priv_inv</a></div><div class="ttdeci">fmpz_poly_t priv_inv</div><div class="ttdef"><b>Definition:</b> <a href="ntru__keypair_8h_source.html#l00056">ntru_keypair.h:56</a></div></div>
<div class="ttc" id="ntru__poly__ascii_8h_html"><div class="ttname"><a href="ntru__poly__ascii_8h.html">ntru_poly_ascii.h</a></div><div class="ttdoc">header for ntru_poly_ascii.c </div></div>
<div class="ttc" id="ntru__params_8h_html"><div class="ttname"><a href="ntru__params_8h.html">ntru_params.h</a></div><div class="ttdoc">NTRU parameters. </div></div>
<div class="ttc" id="ntru__file_8c_html_a348c2a56837571f410d44631abc09dc4"><div class="ttname"><a href="ntru__file_8c.html#a348c2a56837571f410d44631abc09dc4">read_file</a></div><div class="ttdeci">string * read_file(char const *const filename)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__file_8c_source.html#l00050">ntru_file.c:50</a></div></div>
<div class="ttc" id="ntru__keypair_8c_html_a41741ed660cb806c47335f66055e1bdd"><div class="ttname"><a href="ntru__keypair_8c.html#a41741ed660cb806c47335f66055e1bdd">export_public_key</a></div><div class="ttdeci">void export_public_key(char const *const filename, fmpz_poly_t pub, ntru_params *params)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__keypair_8c_source.html#l00096">ntru_keypair.c:96</a></div></div>
<div class="ttc" id="structkeypair_html_afa635c70f233d0b7449b4a17513646c4"><div class="ttname"><a href="structkeypair.html#afa635c70f233d0b7449b4a17513646c4">keypair::pub</a></div><div class="ttdeci">fmpz_poly_t pub</div><div class="ttdef"><b>Definition:</b> <a href="ntru__keypair_8h_source.html#l00061">ntru_keypair.h:61</a></div></div>
<div class="ttc" id="ntru__poly_8c_html_ae96f479ddd97af709a0ed50817fd3fb3"><div class="ttname"><a href="ntru__poly_8c.html#ae96f479ddd97af709a0ed50817fd3fb3">poly_starmultiply</a></div><div class="ttdeci">void poly_starmultiply(const fmpz_poly_t a, const fmpz_poly_t b, fmpz_poly_t c, const ntru_params *params, uint32_t modulus)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__poly_8c_source.html#l00239">ntru_poly.c:239</a></div></div>
<div class="ttc" id="ntru__poly__ascii_8c_html_a4ba0179e3ae0d5e721ff8429a8265e80"><div class="ttname"><a href="ntru__poly__ascii_8c.html#a4ba0179e3ae0d5e721ff8429a8265e80">poly_to_base64</a></div><div class="ttdeci">string * poly_to_base64(const fmpz_poly_t poly, const ntru_params *params)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__poly__ascii_8c_source.html#l00237">ntru_poly_ascii.c:237</a></div></div>
<div class="ttc" id="ntru__poly_8c_html_a3f53c63383ff301b20dcede0783869a7"><div class="ttname"><a href="ntru__poly_8c.html#a3f53c63383ff301b20dcede0783869a7">poly_delete_array</a></div><div class="ttdeci">void poly_delete_array(fmpz_poly_t **poly_array)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__poly_8c_source.html#l00131">ntru_poly.c:131</a></div></div>
<div class="ttc" id="structkeypair_html_a9e9805ad001216da53f2c57accb288e1"><div class="ttname"><a href="structkeypair.html#a9e9805ad001216da53f2c57accb288e1">keypair::priv</a></div><div class="ttdeci">fmpz_poly_t priv</div><div class="ttdef"><b>Definition:</b> <a href="ntru__keypair_8h_source.html#l00051">ntru_keypair.h:51</a></div></div>
<div class="ttc" id="structkeypair_html"><div class="ttname"><a href="structkeypair.html">keypair</a></div><div class="ttdef"><b>Definition:</b> <a href="ntru__keypair_8h_source.html#l00046">ntru_keypair.h:46</a></div></div>
<div class="ttc" id="structntru__params_html_a29680750bda49dc93e61a752b2f2a0f7"><div class="ttname"><a href="structntru__params.html#a29680750bda49dc93e61a752b2f2a0f7">ntru_params::q</a></div><div class="ttdeci">uint32_t q</div><div class="ttdef"><b>Definition:</b> <a href="ntru__params_8h_source.html#l00052">ntru_params.h:52</a></div></div>
<div class="ttc" id="ntru__string_8h_html"><div class="ttname"><a href="ntru__string_8h.html">ntru_string.h</a></div><div class="ttdoc">header for ntru_string.c </div></div>
<div class="ttc" id="ntru__keypair_8c_html_a6873d41211a92c4f6b0074ef34ae1743"><div class="ttname"><a href="ntru__keypair_8c.html#a6873d41211a92c4f6b0074ef34ae1743">ntru_create_keypair</a></div><div class="ttdeci">bool ntru_create_keypair(fmpz_poly_t f, fmpz_poly_t g, keypair *pair, ntru_params *params)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__keypair_8c_source.html#l00047">ntru_keypair.c:47</a></div></div>
<div class="ttc" id="ntru__keypair_8c_html_afa29f14a14486d3f6b979ee900d7e738"><div class="ttname"><a href="ntru__keypair_8c.html#afa29f14a14486d3f6b979ee900d7e738">export_priv_key</a></div><div class="ttdeci">void export_priv_key(char const *const filename, fmpz_poly_t priv, ntru_params *params)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__keypair_8c_source.html#l00111">ntru_keypair.c:111</a></div></div>
<div class="ttc" id="ntru__keypair_8c_html_a4e2c6da04c55e8c1b6c447f4cc9f1d6f"><div class="ttname"><a href="ntru__keypair_8c.html#a4e2c6da04c55e8c1b6c447f4cc9f1d6f">import_public_key</a></div><div class="ttdeci">void import_public_key(char const *const filename, fmpz_poly_t pub, ntru_params *params)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__keypair_8c_source.html#l00132">ntru_keypair.c:132</a></div></div>
<div class="ttc" id="ntru__keypair_8c_html_a1f917ea6ef5302826c888e5c88e0869e"><div class="ttname"><a href="ntru__keypair_8c.html#a1f917ea6ef5302826c888e5c88e0869e">import_priv_key</a></div><div class="ttdeci">void import_priv_key(char const *const filename, fmpz_poly_t priv, fmpz_poly_t priv_inv, ntru_params *params)</div><div class="ttdef"><b>Definition:</b> <a href="ntru__keypair_8c_source.html#l00157">ntru_keypair.c:157</a></div></div>
<div class="ttc" id="ntru__poly_8h_html"><div class="ttname"><a href="ntru__poly_8h.html">ntru_poly.h</a></div><div class="ttdoc">header for ntru_poly.c </div></div>
<div class="ttc" id="ntru__ascii__poly_8h_html"><div class="ttname"><a href="ntru__ascii__poly_8h.html">ntru_ascii_poly.h</a></div><div class="ttdoc">header for ntru_ascii_poly.c </div></div>
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