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<a href="dhm_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> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Diffie-Hellman-Merkle key exchange</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Copyright (C) 2006-2014, Brainspark B.V.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * This file is part of PolarSSL (http://www.polarssl.org)</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org></span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * This program is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * (at your option) any later version.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * This program is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * GNU General Public License for more details.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * You should have received a copy of the GNU General Public License along</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * with this program; if not, write to the Free Software Foundation, Inc.,</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * Reference:</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * http://www.cacr.math.uwaterloo.ca/hac/ (chapter 12)</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#if !defined(POLARSSL_CONFIG_FILE)</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="config_8h.html">polarssl/config.h</a>"</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor"></span><span class="preprocessor">#include POLARSSL_CONFIG_FILE</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#if defined(POLARSSL_DHM_C)</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include "<a class="code" href="dhm_8h.html">polarssl/dhm.h</a>"</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor">#if defined(POLARSSL_PEM_PARSE_C)</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="pem_8h.html">polarssl/pem.h</a>"</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#if defined(POLARSSL_ASN1_PARSE_C)</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="asn1_8h.html">polarssl/asn1.h</a>"</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#if defined(POLARSSL_PLATFORM_C)</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="platform_8h.html">polarssl/platform.h</a>"</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor"></span><span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#define polarssl_printf printf</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor"></span><span class="preprocessor">#define polarssl_malloc malloc</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor"></span><span class="preprocessor">#define polarssl_free free</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment">/* Implementation that should never be optimized out by the compiler */</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">static</span> <span class="keywordtype">void</span> polarssl_zeroize( <span class="keywordtype">void</span> *v, <span class="keywordtype">size_t</span> n ) {</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">volatile</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *p = v; <span class="keywordflow">while</span>( n-- ) *p++ = 0;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> }</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> * helper to validate the mpi size and import it</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="keyword">static</span> <span class="keywordtype">int</span> dhm_read_bignum( <a class="code" href="structmpi.html">mpi</a> *X,</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> **p,</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *end )</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordtype">int</span> ret, n;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">if</span>( end - *p < 2 )</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#ab1f102e6347b0cc8c49d525964d7c996">POLARSSL_ERR_DHM_BAD_INPUT_DATA</a> );</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  n = ( (*p)[0] << 8 ) | (*p)[1];</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  (*p) += 2;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">if</span>( (<span class="keywordtype">int</span>)( end - *p ) < n )</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#ab1f102e6347b0cc8c49d525964d7c996">POLARSSL_ERR_DHM_BAD_INPUT_DATA</a> );</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span>( ( ret = <a class="code" href="bignum_8h.html#a0235008cccbf00b8bc03699de8094819">mpi_read_binary</a>( X, *p, n ) ) != 0 )</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#a1cf5b743957392157fefae2d1ceef39f">POLARSSL_ERR_DHM_READ_PARAMS_FAILED</a> + ret );</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  (*p) += n;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> }</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> * Verify sanity of parameter with regards to P</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> * Parameter should be: 2 <= public_param <= P - 2</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> * For more information on the attack, see:</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"> * http://www.cl.cam.ac.uk/~rja14/Papers/psandqs.pdf</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> * http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2005-2643</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="keyword">static</span> <span class="keywordtype">int</span> dhm_check_range( <span class="keyword">const</span> <a class="code" href="structmpi.html">mpi</a> *param, <span class="keyword">const</span> <a class="code" href="structmpi.html">mpi</a> *P )</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> {</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <a class="code" href="structmpi.html">mpi</a> L, U;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordtype">int</span> ret = <a class="code" href="dhm_8h.html#ab1f102e6347b0cc8c49d525964d7c996">POLARSSL_ERR_DHM_BAD_INPUT_DATA</a>;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <a class="code" href="bignum_8h.html#a201666869f65225d6535bcc697f95c9b">mpi_init</a>( &L ); <a class="code" href="bignum_8h.html#a201666869f65225d6535bcc697f95c9b">mpi_init</a>( &U );</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a007d6236aebb0ff4a3d92ce8f525a3ae">mpi_lset</a>( &L, 2 ) );</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#acfdf0f6effb7f976a2f90844c492e160">mpi_sub_int</a>( &U, P, 2 ) );</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">if</span>( <a class="code" href="bignum_8h.html#aec20dff9d78738e3c80b212df9875b83">mpi_cmp_mpi</a>( param, &L ) >= 0 &&</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <a class="code" href="bignum_8h.html#aec20dff9d78738e3c80b212df9875b83">mpi_cmp_mpi</a>( param, &U ) <= 0 )</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  {</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  ret = 0;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> cleanup:</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &L ); <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &U );</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">return</span>( ret );</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> }</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="keywordtype">void</span> <a class="code" href="dhm_8h.html#aa739ef8a5b198350fb3a7b9b7a162c54">dhm_init</a>( <a class="code" href="structdhm__context.html">dhm_context</a> *ctx )</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> {</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  memset( ctx, 0, <span class="keyword">sizeof</span>( <a class="code" href="structdhm__context.html">dhm_context</a> ) );</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> }</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> * Parse the ServerKeyExchange parameters</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keywordtype">int</span> <a class="code" href="dhm_8h.html#a6c77d265f13f7333802b93172a6833aa">dhm_read_params</a>( <a class="code" href="structdhm__context.html">dhm_context</a> *ctx,</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> **p,</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *end )</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> {</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">if</span>( ( ret = dhm_read_bignum( &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a>, p, end ) ) != 0 ||</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  ( ret = dhm_read_bignum( &ctx-><a class="code" href="structdhm__context.html#a3aa710a0588e9329dbdd60f0d7b28638">G</a>, p, end ) ) != 0 ||</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  ( ret = dhm_read_bignum( &ctx-><a class="code" href="structdhm__context.html#a74e8d6bf6068235c5bc720752e056a80">GY</a>, p, end ) ) != 0 )</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">return</span>( ret );</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">if</span>( ( ret = dhm_check_range( &ctx-><a class="code" href="structdhm__context.html#a74e8d6bf6068235c5bc720752e056a80">GY</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) ) != 0 )</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">return</span>( ret );</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  ctx-><a class="code" href="structdhm__context.html#a8355290a08215a51d75aa10b86066da3">len</a> = <a class="code" href="bignum_8h.html#a8aa3a3d3aac9e49879ea8cd308859d23">mpi_size</a>( &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> );</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> }</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment"> * Setup and write the ServerKeyExchange parameters</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="keywordtype">int</span> <a class="code" href="dhm_8h.html#a23357e363671873e068cd7c206a35d92">dhm_make_params</a>( <a class="code" href="structdhm__context.html">dhm_context</a> *ctx, <span class="keywordtype">int</span> x_size,</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *output, <span class="keywordtype">size_t</span> *olen,</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordtype">int</span> (*f_rng)(<span class="keywordtype">void</span> *, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *, <span class="keywordtype">size_t</span>),</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordtype">void</span> *p_rng )</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> {</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordtype">int</span> ret, count = 0;</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordtype">size_t</span> n1, n2, n3;</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *p;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">if</span>( <a class="code" href="bignum_8h.html#aee6dc030f0fa278c1576c457088b4910">mpi_cmp_int</a>( &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a>, 0 ) == 0 )</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#ab1f102e6347b0cc8c49d525964d7c996">POLARSSL_ERR_DHM_BAD_INPUT_DATA</a> );</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment"> * Generate X as large as possible ( < P )</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">do</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  {</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <a class="code" href="bignum_8h.html#a5ac8858041a8d5b49c11d38fd4069975">mpi_fill_random</a>( &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>, x_size, f_rng, p_rng );</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">while</span>( <a class="code" href="bignum_8h.html#aec20dff9d78738e3c80b212df9875b83">mpi_cmp_mpi</a>( &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) >= 0 )</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a01de1543da79d0ad0f58916d608f6ff8">mpi_shift_r</a>( &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>, 1 ) );</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">if</span>( count++ > 10 )</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#a3e27f309924f0bf267c7de08bc6125b5">POLARSSL_ERR_DHM_MAKE_PARAMS_FAILED</a> );</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  }</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">while</span>( dhm_check_range( &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) != 0 );</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment"> * Calculate GX = G^X mod P</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a84befed1943a584332e0599605b0d3fe">mpi_exp_mod</a>( &ctx-><a class="code" href="structdhm__context.html#a52cd454282f8c2b590d89d7078a43783">GX</a>, &ctx-><a class="code" href="structdhm__context.html#a3aa710a0588e9329dbdd60f0d7b28638">G</a>, &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>,</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> , &ctx-><a class="code" href="structdhm__context.html#a7135c7844859c5874d785f874cf049b4">RP</a> ) );</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keywordflow">if</span>( ( ret = dhm_check_range( &ctx-><a class="code" href="structdhm__context.html#a52cd454282f8c2b590d89d7078a43783">GX</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) ) != 0 )</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">return</span>( ret );</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="comment"> * export P, G, GX</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="preprocessor">#define DHM_MPI_EXPORT(X,n) \</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="preprocessor"> MPI_CHK( mpi_write_binary( X, p + 2, n ) ); \</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="preprocessor"> *p++ = (unsigned char)( n >> 8 ); \</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="preprocessor"> *p++ = (unsigned char)( n ); p += n;</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  n1 = <a class="code" href="bignum_8h.html#a8aa3a3d3aac9e49879ea8cd308859d23">mpi_size</a>( &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> );</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  n2 = <a class="code" href="bignum_8h.html#a8aa3a3d3aac9e49879ea8cd308859d23">mpi_size</a>( &ctx-><a class="code" href="structdhm__context.html#a3aa710a0588e9329dbdd60f0d7b28638">G</a> );</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  n3 = <a class="code" href="bignum_8h.html#a8aa3a3d3aac9e49879ea8cd308859d23">mpi_size</a>( &ctx-><a class="code" href="structdhm__context.html#a52cd454282f8c2b590d89d7078a43783">GX</a> );</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  p = output;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  DHM_MPI_EXPORT( &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> , n1 );</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  DHM_MPI_EXPORT( &ctx-><a class="code" href="structdhm__context.html#a3aa710a0588e9329dbdd60f0d7b28638">G</a> , n2 );</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  DHM_MPI_EXPORT( &ctx-><a class="code" href="structdhm__context.html#a52cd454282f8c2b590d89d7078a43783">GX</a>, n3 );</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  *olen = p - output;</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  ctx-><a class="code" href="structdhm__context.html#a8355290a08215a51d75aa10b86066da3">len</a> = n1;</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> </div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> cleanup:</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keywordflow">if</span>( ret != 0 )</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#a3e27f309924f0bf267c7de08bc6125b5">POLARSSL_ERR_DHM_MAKE_PARAMS_FAILED</a> + ret );</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> }</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="comment"> * Import the peer's public value G^Y</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="keywordtype">int</span> <a class="code" href="dhm_8h.html#a04a6ae0b94659777f031820cb2eb1b5d">dhm_read_public</a>( <a class="code" href="structdhm__context.html">dhm_context</a> *ctx,</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *input, <span class="keywordtype">size_t</span> ilen )</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> {</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">if</span>( ctx == NULL || ilen < 1 || ilen > ctx-><a class="code" href="structdhm__context.html#a8355290a08215a51d75aa10b86066da3">len</a> )</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#ab1f102e6347b0cc8c49d525964d7c996">POLARSSL_ERR_DHM_BAD_INPUT_DATA</a> );</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">if</span>( ( ret = <a class="code" href="bignum_8h.html#a0235008cccbf00b8bc03699de8094819">mpi_read_binary</a>( &ctx-><a class="code" href="structdhm__context.html#a74e8d6bf6068235c5bc720752e056a80">GY</a>, input, ilen ) ) != 0 )</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#a54e3f55659f632b8cce3159f113ee009">POLARSSL_ERR_DHM_READ_PUBLIC_FAILED</a> + ret );</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> </div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> }</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="comment"> * Create own private value X and export G^X</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="keywordtype">int</span> <a class="code" href="dhm_8h.html#a1504ee72125df9a4f8ba4f732d231d31">dhm_make_public</a>( <a class="code" href="structdhm__context.html">dhm_context</a> *ctx, <span class="keywordtype">int</span> x_size,</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *output, <span class="keywordtype">size_t</span> olen,</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordtype">int</span> (*f_rng)(<span class="keywordtype">void</span> *, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *, <span class="keywordtype">size_t</span>),</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordtype">void</span> *p_rng )</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> {</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordtype">int</span> ret, count = 0;</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">if</span>( ctx == NULL || olen < 1 || olen > ctx-><a class="code" href="structdhm__context.html#a8355290a08215a51d75aa10b86066da3">len</a> )</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#ab1f102e6347b0cc8c49d525964d7c996">POLARSSL_ERR_DHM_BAD_INPUT_DATA</a> );</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">if</span>( <a class="code" href="bignum_8h.html#aee6dc030f0fa278c1576c457088b4910">mpi_cmp_int</a>( &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a>, 0 ) == 0 )</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#ab1f102e6347b0cc8c49d525964d7c996">POLARSSL_ERR_DHM_BAD_INPUT_DATA</a> );</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="comment"> * generate X and calculate GX = G^X mod P</span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">do</span></div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  {</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <a class="code" href="bignum_8h.html#a5ac8858041a8d5b49c11d38fd4069975">mpi_fill_random</a>( &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>, x_size, f_rng, p_rng );</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">while</span>( <a class="code" href="bignum_8h.html#aec20dff9d78738e3c80b212df9875b83">mpi_cmp_mpi</a>( &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) >= 0 )</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a01de1543da79d0ad0f58916d608f6ff8">mpi_shift_r</a>( &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>, 1 ) );</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> </div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keywordflow">if</span>( count++ > 10 )</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#a29ed83b8442b715e03990f438d4bce98">POLARSSL_ERR_DHM_MAKE_PUBLIC_FAILED</a> );</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  }</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keywordflow">while</span>( dhm_check_range( &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) != 0 );</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> </div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a84befed1943a584332e0599605b0d3fe">mpi_exp_mod</a>( &ctx-><a class="code" href="structdhm__context.html#a52cd454282f8c2b590d89d7078a43783">GX</a>, &ctx-><a class="code" href="structdhm__context.html#a3aa710a0588e9329dbdd60f0d7b28638">G</a>, &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>,</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> , &ctx-><a class="code" href="structdhm__context.html#a7135c7844859c5874d785f874cf049b4">RP</a> ) );</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> </div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keywordflow">if</span>( ( ret = dhm_check_range( &ctx-><a class="code" href="structdhm__context.html#a52cd454282f8c2b590d89d7078a43783">GX</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) ) != 0 )</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">return</span>( ret );</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> </div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a5d464b4312859ce4969d114eb5e02741">mpi_write_binary</a>( &ctx-><a class="code" href="structdhm__context.html#a52cd454282f8c2b590d89d7078a43783">GX</a>, output, olen ) );</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> </div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> cleanup:</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> </div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">if</span>( ret != 0 )</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#a29ed83b8442b715e03990f438d4bce98">POLARSSL_ERR_DHM_MAKE_PUBLIC_FAILED</a> + ret );</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> }</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> </div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="comment"> * Use the blinding method and optimisation suggested in section 10 of:</span></div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="comment"> * KOCHER, Paul C. Timing attacks on implementations of Diffie-Hellman, RSA,</span></div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="comment"> * DSS, and other systems. In : Advances in Cryptology—CRYPTO’96. Springer</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="comment"> * Berlin Heidelberg, 1996. p. 104-113.</span></div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="keyword">static</span> <span class="keywordtype">int</span> dhm_update_blinding( <a class="code" href="structdhm__context.html">dhm_context</a> *ctx,</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordtype">int</span> (*f_rng)(<span class="keywordtype">void</span> *, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *, <span class="keywordtype">size_t</span>), <span class="keywordtype">void</span> *p_rng )</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> {</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordtype">int</span> ret, count;</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> </div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="comment"> * Don't use any blinding the first time a particular X is used,</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="comment"> * but remember it to use blinding next time.</span></div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordflow">if</span>( <a class="code" href="bignum_8h.html#aec20dff9d78738e3c80b212df9875b83">mpi_cmp_mpi</a>( &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>, &ctx-><a class="code" href="structdhm__context.html#a9cb06cc714a206eb701744daffd42996">pX</a> ) != 0 )</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  {</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a6fbcce39a9d92d9e2a560f8aa6a810f4">mpi_copy</a>( &ctx-><a class="code" href="structdhm__context.html#a9cb06cc714a206eb701744daffd42996">pX</a>, &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a> ) );</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a007d6236aebb0ff4a3d92ce8f525a3ae">mpi_lset</a>( &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a>, 1 ) );</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a007d6236aebb0ff4a3d92ce8f525a3ae">mpi_lset</a>( &ctx-><a class="code" href="structdhm__context.html#a35d487c8c5e9618a216ae7917df3bfba">Vf</a>, 1 ) );</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> </div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  }</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span> </div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="comment"> * Ok, we need blinding. Can we re-use existing values?</span></div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="comment"> * If yes, just update them by squaring them.</span></div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordflow">if</span>( <a class="code" href="bignum_8h.html#aee6dc030f0fa278c1576c457088b4910">mpi_cmp_int</a>( &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a>, 1 ) != 0 )</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  {</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#ab63bfb07b27db84268491cd7d68bddc0">mpi_mul_mpi</a>( &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a>, &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a>, &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a> ) );</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a075d3cf21cb3733e5f0a872e72b0cd15">mpi_mod_mpi</a>( &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a>, &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) );</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> </div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#ab63bfb07b27db84268491cd7d68bddc0">mpi_mul_mpi</a>( &ctx-><a class="code" href="structdhm__context.html#a35d487c8c5e9618a216ae7917df3bfba">Vf</a>, &ctx-><a class="code" href="structdhm__context.html#a35d487c8c5e9618a216ae7917df3bfba">Vf</a>, &ctx-><a class="code" href="structdhm__context.html#a35d487c8c5e9618a216ae7917df3bfba">Vf</a> ) );</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a075d3cf21cb3733e5f0a872e72b0cd15">mpi_mod_mpi</a>( &ctx-><a class="code" href="structdhm__context.html#a35d487c8c5e9618a216ae7917df3bfba">Vf</a>, &ctx-><a class="code" href="structdhm__context.html#a35d487c8c5e9618a216ae7917df3bfba">Vf</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) );</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> </div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  }</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> </div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> <span class="comment"> * We need to generate blinding values from scratch</span></div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span> </div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="comment">/* Vi = random( 2, P-1 ) */</span></div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  count = 0;</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">do</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  {</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <a class="code" href="bignum_8h.html#a5ac8858041a8d5b49c11d38fd4069975">mpi_fill_random</a>( &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a>, <a class="code" href="bignum_8h.html#a8aa3a3d3aac9e49879ea8cd308859d23">mpi_size</a>( &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ), f_rng, p_rng );</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> </div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keywordflow">while</span>( <a class="code" href="bignum_8h.html#aec20dff9d78738e3c80b212df9875b83">mpi_cmp_mpi</a>( &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) >= 0 )</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a01de1543da79d0ad0f58916d608f6ff8">mpi_shift_r</a>( &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a>, 1 ) );</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span> </div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">if</span>( count++ > 10 )</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="keywordflow">return</span>( <a class="code" href="bignum_8h.html#ac42cb2c2b13df48182ee833de2e4adbf">POLARSSL_ERR_MPI_NOT_ACCEPTABLE</a> );</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  }</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordflow">while</span>( <a class="code" href="bignum_8h.html#aee6dc030f0fa278c1576c457088b4910">mpi_cmp_int</a>( &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a>, 1 ) <= 0 );</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> </div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="comment">/* Vf = Vi^-X mod P */</span></div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a090616da16b87653c025874e1675da79">mpi_inv_mod</a>( &ctx-><a class="code" href="structdhm__context.html#a35d487c8c5e9618a216ae7917df3bfba">Vf</a>, &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) );</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a84befed1943a584332e0599605b0d3fe">mpi_exp_mod</a>( &ctx-><a class="code" href="structdhm__context.html#a35d487c8c5e9618a216ae7917df3bfba">Vf</a>, &ctx-><a class="code" href="structdhm__context.html#a35d487c8c5e9618a216ae7917df3bfba">Vf</a>, &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a>, &ctx-><a class="code" href="structdhm__context.html#a7135c7844859c5874d785f874cf049b4">RP</a> ) );</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span> </div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span> cleanup:</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="keywordflow">return</span>( ret );</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span> }</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> </div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span> <span class="comment"> * Derive and export the shared secret (G^Y)^X mod P</span></div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> <span class="keywordtype">int</span> <a class="code" href="dhm_8h.html#a4a0a7ae7821c1925baa33c2797052f30">dhm_calc_secret</a>( <a class="code" href="structdhm__context.html">dhm_context</a> *ctx,</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *output, <span class="keywordtype">size_t</span> *olen,</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordtype">int</span> (*f_rng)(<span class="keywordtype">void</span> *, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *, <span class="keywordtype">size_t</span>),</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keywordtype">void</span> *p_rng )</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> {</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <a class="code" href="structmpi.html">mpi</a> GYb;</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span> </div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keywordflow">if</span>( ctx == NULL || *olen < ctx->len )</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#ab1f102e6347b0cc8c49d525964d7c996">POLARSSL_ERR_DHM_BAD_INPUT_DATA</a> );</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> </div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="keywordflow">if</span>( ( ret = dhm_check_range( &ctx-><a class="code" href="structdhm__context.html#a74e8d6bf6068235c5bc720752e056a80">GY</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) ) != 0 )</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordflow">return</span>( ret );</div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> </div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <a class="code" href="bignum_8h.html#a201666869f65225d6535bcc697f95c9b">mpi_init</a>( &GYb );</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span> </div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="comment">/* Blind peer's value */</span></div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keywordflow">if</span>( f_rng != NULL )</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  {</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( dhm_update_blinding( ctx, f_rng, p_rng ) );</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#ab63bfb07b27db84268491cd7d68bddc0">mpi_mul_mpi</a>( &GYb, &ctx-><a class="code" href="structdhm__context.html#a74e8d6bf6068235c5bc720752e056a80">GY</a>, &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a> ) );</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a075d3cf21cb3733e5f0a872e72b0cd15">mpi_mod_mpi</a>( &GYb, &GYb, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) );</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  }</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a6fbcce39a9d92d9e2a560f8aa6a810f4">mpi_copy</a>( &GYb, &ctx-><a class="code" href="structdhm__context.html#a74e8d6bf6068235c5bc720752e056a80">GY</a> ) );</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span> </div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="comment">/* Do modular exponentiation */</span></div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a84befed1943a584332e0599605b0d3fe">mpi_exp_mod</a>( &ctx-><a class="code" href="structdhm__context.html#a97d4e78ea6d6c557c74079297515b150">K</a>, &GYb, &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a>,</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a>, &ctx-><a class="code" href="structdhm__context.html#a7135c7844859c5874d785f874cf049b4">RP</a> ) );</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> </div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="comment">/* Unblind secret value */</span></div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="keywordflow">if</span>( f_rng != NULL )</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  {</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#ab63bfb07b27db84268491cd7d68bddc0">mpi_mul_mpi</a>( &ctx-><a class="code" href="structdhm__context.html#a97d4e78ea6d6c557c74079297515b150">K</a>, &ctx-><a class="code" href="structdhm__context.html#a97d4e78ea6d6c557c74079297515b150">K</a>, &ctx-><a class="code" href="structdhm__context.html#a35d487c8c5e9618a216ae7917df3bfba">Vf</a> ) );</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a075d3cf21cb3733e5f0a872e72b0cd15">mpi_mod_mpi</a>( &ctx-><a class="code" href="structdhm__context.html#a97d4e78ea6d6c557c74079297515b150">K</a>, &ctx-><a class="code" href="structdhm__context.html#a97d4e78ea6d6c557c74079297515b150">K</a>, &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) );</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  }</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span> </div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  *olen = <a class="code" href="bignum_8h.html#a8aa3a3d3aac9e49879ea8cd308859d23">mpi_size</a>( &ctx-><a class="code" href="structdhm__context.html#a97d4e78ea6d6c557c74079297515b150">K</a> );</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span> </div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <a class="code" href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a>( <a class="code" href="bignum_8h.html#a5d464b4312859ce4969d114eb5e02741">mpi_write_binary</a>( &ctx-><a class="code" href="structdhm__context.html#a97d4e78ea6d6c557c74079297515b150">K</a>, output, *olen ) );</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span> </div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span> cleanup:</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &GYb );</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span> </div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keywordflow">if</span>( ret != 0 )</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#ab4f6609fa29638c85e6d401954d02845">POLARSSL_ERR_DHM_CALC_SECRET_FAILED</a> + ret );</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> </div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span> }</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span> </div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> <span class="comment"> * Free the components of a DHM key</span></div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> <span class="keywordtype">void</span> <a class="code" href="dhm_8h.html#ada3c785f695c3d513177dd45d3c6f254">dhm_free</a>( <a class="code" href="structdhm__context.html">dhm_context</a> *ctx )</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> {</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &ctx-><a class="code" href="structdhm__context.html#a9cb06cc714a206eb701744daffd42996">pX</a>); <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &ctx-><a class="code" href="structdhm__context.html#a35d487c8c5e9618a216ae7917df3bfba">Vf</a> ); <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &ctx-><a class="code" href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">Vi</a> );</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &ctx-><a class="code" href="structdhm__context.html#a7135c7844859c5874d785f874cf049b4">RP</a> ); <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &ctx-><a class="code" href="structdhm__context.html#a97d4e78ea6d6c557c74079297515b150">K</a> ); <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &ctx-><a class="code" href="structdhm__context.html#a74e8d6bf6068235c5bc720752e056a80">GY</a> );</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &ctx-><a class="code" href="structdhm__context.html#a52cd454282f8c2b590d89d7078a43783">GX</a> ); <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &ctx-><a class="code" href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">X</a> ); <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &ctx-><a class="code" href="structdhm__context.html#a3aa710a0588e9329dbdd60f0d7b28638">G</a> );</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <a class="code" href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a>( &ctx-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> );</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> </div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  polarssl_zeroize( ctx, <span class="keyword">sizeof</span>( <a class="code" href="structdhm__context.html">dhm_context</a> ) );</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span> }</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> </div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span> <span class="preprocessor">#if defined(POLARSSL_ASN1_PARSE_C)</span></div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span> <span class="preprocessor"></span><span class="comment">/*</span></div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span> <span class="comment"> * Parse DHM parameters</span></div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span> <span class="keywordtype">int</span> <a class="code" href="group__x509__module.html#ga99888623ed4f805c0e58b705a534c8e5">dhm_parse_dhm</a>( <a class="code" href="structdhm__context.html">dhm_context</a> *dhm, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *dhmin,</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keywordtype">size_t</span> dhminlen )</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span> {</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keywordtype">size_t</span> len;</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *p, *end;</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> <span class="preprocessor">#if defined(POLARSSL_PEM_PARSE_C)</span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span> <span class="preprocessor"></span> pem_context pem;</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span> </div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  pem_init( &pem );</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span> </div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  ret = pem_read_buffer( &pem,</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  <span class="stringliteral">"-----BEGIN DH PARAMETERS-----"</span>,</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="stringliteral">"-----END DH PARAMETERS-----"</span>,</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  dhmin, NULL, 0, &dhminlen );</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span> </div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keywordflow">if</span>( ret == 0 )</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  {</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> <span class="comment"> * Was PEM encoded</span></div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  dhminlen = pem.buflen;</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  }</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span>( ret != <a class="code" href="pem_8h.html#aba55809b3ae6781d4ab92ccdfbe54a9c">POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT</a> )</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="keywordflow">goto</span> exit;</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span> </div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  p = ( ret == 0 ) ? pem.buf : (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *) dhmin;</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span> <span class="preprocessor"></span> p = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *) dhmin;</div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span> <span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_PEM_PARSE_C */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span> <span class="preprocessor"></span> end = p + dhminlen;</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span> </div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span> <span class="comment"> * DHParams ::= SEQUENCE {</span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span> <span class="comment"> * prime INTEGER, -- P</span></div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span> <span class="comment"> * generator INTEGER, -- g</span></div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span> <span class="comment"> * }</span></div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordflow">if</span>( ( ret = <a class="code" href="asn1_8h.html#af7d10ad8e91ae5cb4a78f7d7dc1a8ac6">asn1_get_tag</a>( &p, end, &len,</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <a class="code" href="group__asn1__module.html#ga799d7b17a9532e1dadc8355f04477e27">ASN1_CONSTRUCTED</a> | <a class="code" href="group__asn1__module.html#ga9321fc9f2a5ef4103008fbe5c4b230df">ASN1_SEQUENCE</a> ) ) != 0 )</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  {</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  ret = <a class="code" href="dhm_8h.html#abd146afeae00caff8a5619ae884149db">POLARSSL_ERR_DHM_INVALID_FORMAT</a> + ret;</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="keywordflow">goto</span> exit;</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  }</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span> </div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  end = p + len;</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span> </div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">if</span>( ( ret = <a class="code" href="asn1_8h.html#a9241caf4492b2405e48db346205af62f">asn1_get_mpi</a>( &p, end, &dhm-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> ) ) != 0 ||</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  ( ret = <a class="code" href="asn1_8h.html#a9241caf4492b2405e48db346205af62f">asn1_get_mpi</a>( &p, end, &dhm-><a class="code" href="structdhm__context.html#a3aa710a0588e9329dbdd60f0d7b28638">G</a> ) ) != 0 )</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  {</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  ret = <a class="code" href="dhm_8h.html#abd146afeae00caff8a5619ae884149db">POLARSSL_ERR_DHM_INVALID_FORMAT</a> + ret;</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class="keywordflow">goto</span> exit;</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  }</div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span> </div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keywordflow">if</span>( p != end )</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  {</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  ret = <a class="code" href="dhm_8h.html#abd146afeae00caff8a5619ae884149db">POLARSSL_ERR_DHM_INVALID_FORMAT</a> +</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <a class="code" href="group__asn1__module.html#gaffc1c105d348cf2be47a2c8d6ab5ef63">POLARSSL_ERR_ASN1_LENGTH_MISMATCH</a>;</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="keywordflow">goto</span> exit;</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  }</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span> </div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  ret = 0;</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span> </div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  dhm-><a class="code" href="structdhm__context.html#a8355290a08215a51d75aa10b86066da3">len</a> = <a class="code" href="bignum_8h.html#a8aa3a3d3aac9e49879ea8cd308859d23">mpi_size</a>( &dhm-><a class="code" href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">P</a> );</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span> </div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span> exit:</div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span> <span class="preprocessor">#if defined(POLARSSL_PEM_PARSE_C)</span></div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> <span class="preprocessor"></span> pem_free( &pem );</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span> <span class="preprocessor"></span> <span class="keywordflow">if</span>( ret != 0 )</div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <a class="code" href="dhm_8h.html#ada3c785f695c3d513177dd45d3c6f254">dhm_free</a>( dhm );</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span> </div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="keywordflow">return</span>( ret );</div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span> }</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span> </div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span> <span class="preprocessor">#if defined(POLARSSL_FS_IO)</span></div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span> <span class="preprocessor"></span><span class="comment">/*</span></div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span> <span class="comment"> * Load all data from a file into a given buffer.</span></div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span> <span class="keyword">static</span> <span class="keywordtype">int</span> load_file( <span class="keyword">const</span> <span class="keywordtype">char</span> *path, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> **buf, <span class="keywordtype">size_t</span> *n )</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span> {</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  FILE *f;</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="keywordtype">long</span> size;</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span> </div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <span class="keywordflow">if</span>( ( f = fopen( path, <span class="stringliteral">"rb"</span> ) ) == NULL )</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#aebb6ccd367ebc3306b71fd214530c2c2">POLARSSL_ERR_DHM_FILE_IO_ERROR</a> );</div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span> </div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  fseek( f, 0, SEEK_END );</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="keywordflow">if</span>( ( size = ftell( f ) ) == -1 )</div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  {</div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  fclose( f );</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#aebb6ccd367ebc3306b71fd214530c2c2">POLARSSL_ERR_DHM_FILE_IO_ERROR</a> );</div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  }</div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  fseek( f, 0, SEEK_SET );</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span> </div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  *n = (size_t) size;</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span> </div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="keywordflow">if</span>( *n + 1 == 0 ||</div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  ( *buf = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *) <a class="code" href="test__suite__aes_8cbc_8c.html#a2a0cfb9e59f28e2a1a5fd1880fb20d4b">polarssl_malloc</a>( *n + 1 ) ) == NULL )</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  {</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  fclose( f );</div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#ac3d150ca9ea33ba5355738f56907907c">POLARSSL_ERR_DHM_MALLOC_FAILED</a> );</div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  }</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span> </div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="keywordflow">if</span>( fread( *buf, 1, *n, f ) != *n )</div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  {</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  fclose( f );</div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <a class="code" href="test__suite__aes_8cbc_8c.html#a3c8219c194813f302bf78fe73566cb2d">polarssl_free</a>( *buf );</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="keywordflow">return</span>( <a class="code" href="dhm_8h.html#aebb6ccd367ebc3306b71fd214530c2c2">POLARSSL_ERR_DHM_FILE_IO_ERROR</a> );</div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  }</div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span> </div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  fclose( f );</div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span> </div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  (*buf)[*n] = <span class="charliteral">'\0'</span>;</div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span> </div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span> }</div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span> </div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span> <span class="comment"> * Load and parse DHM parameters</span></div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span> <span class="keywordtype">int</span> <a class="code" href="group__x509__module.html#gab51d126333172f165a67ac6f5dd2a910">dhm_parse_dhmfile</a>( <a class="code" href="structdhm__context.html">dhm_context</a> *dhm, <span class="keyword">const</span> <span class="keywordtype">char</span> *path )</div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span> {</div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="keywordtype">size_t</span> n;</div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf;</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span> </div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  <span class="keywordflow">if</span>( ( ret = load_file( path, &buf, &n ) ) != 0 )</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <span class="keywordflow">return</span>( ret );</div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span> </div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  ret = <a class="code" href="group__x509__module.html#ga99888623ed4f805c0e58b705a534c8e5">dhm_parse_dhm</a>( dhm, buf, n );</div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span> </div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  polarssl_zeroize( buf, n + 1 );</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <a class="code" href="test__suite__aes_8cbc_8c.html#a3c8219c194813f302bf78fe73566cb2d">polarssl_free</a>( buf );</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span> </div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="keywordflow">return</span>( ret );</div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span> }</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span> <span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_FS_IO */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span> <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_ASN1_PARSE_C */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span> <span class="preprocessor">#if defined(POLARSSL_SELF_TEST)</span></div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00555"></a><span class="lineno"> 555</span> <span class="preprocessor">#include "<a class="code" href="certs_8h.html">polarssl/certs.h</a>"</span></div>
<div class="line"><a name="l00556"></a><span class="lineno"> 556</span> </div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span> <span class="comment"> * Checkup routine</span></div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00560"></a><span class="lineno"> 560</span> <span class="keywordtype">int</span> <a class="code" href="dhm_8h.html#a61cc4f6b8b132f50e34b6f42b74d08fa">dhm_self_test</a>( <span class="keywordtype">int</span> verbose )</div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span> {</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span> <span class="preprocessor">#if defined(POLARSSL_CERTS_C)</span></div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span> <span class="preprocessor"></span> <span class="keywordtype">int</span> ret;</div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <a class="code" href="structdhm__context.html">dhm_context</a> dhm;</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span> </div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <a class="code" href="dhm_8h.html#aa739ef8a5b198350fb3a7b9b7a162c54">dhm_init</a>( &dhm );</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span> </div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  <span class="keywordflow">if</span>( verbose != 0 )</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <a class="code" href="test__suite__aes_8cbc_8c.html#afc6a7362c0f0c9cfa8fc76b3281e2b37">polarssl_printf</a>( <span class="stringliteral">" DHM parameter load: "</span> );</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span> </div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  <span class="keywordflow">if</span>( ( ret = <a class="code" href="group__x509__module.html#ga99888623ed4f805c0e58b705a534c8e5">dhm_parse_dhm</a>( &dhm, (<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *) test_dhm_params,</div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  strlen( test_dhm_params ) ) ) != 0 )</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  {</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  <span class="keywordflow">if</span>( verbose != 0 )</div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <a class="code" href="test__suite__aes_8cbc_8c.html#afc6a7362c0f0c9cfa8fc76b3281e2b37">polarssl_printf</a>( <span class="stringliteral">"failed\n"</span> );</div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span> </div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  ret = 1;</div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <span class="keywordflow">goto</span> exit;</div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  }</div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span> </div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <span class="keywordflow">if</span>( verbose != 0 )</div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <a class="code" href="test__suite__aes_8cbc_8c.html#afc6a7362c0f0c9cfa8fc76b3281e2b37">polarssl_printf</a>( <span class="stringliteral">"passed\n\n"</span> );</div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span> </div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span> exit:</div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  <a class="code" href="dhm_8h.html#ada3c785f695c3d513177dd45d3c6f254">dhm_free</a>( &dhm );</div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> </div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="keywordflow">return</span>( ret );</div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span> <span class="preprocessor"></span> <span class="keywordflow">if</span>( verbose != 0 )</div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <a class="code" href="test__suite__aes_8cbc_8c.html#afc6a7362c0f0c9cfa8fc76b3281e2b37">polarssl_printf</a>( <span class="stringliteral">" DHM parameter load: skipped\n"</span> );</div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span> </div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="keywordflow">return</span>( 0 );</div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span> <span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_CERTS_C */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span> <span class="preprocessor"></span>}</div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span> </div>
<div class="line"><a name="l00596"></a><span class="lineno"> 596</span> <span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_SELF_TEST */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span> <span class="preprocessor">#endif </span><span class="comment">/* POLARSSL_DHM_C */</span><span class="preprocessor"></span></div>
<div class="ttc" id="bignum_8h_html_aee6dc030f0fa278c1576c457088b4910"><div class="ttname"><a href="bignum_8h.html#aee6dc030f0fa278c1576c457088b4910">mpi_cmp_int</a></div><div class="ttdeci">int mpi_cmp_int(const mpi *X, t_sint z)</div><div class="ttdoc">Compare signed values. </div></div>
<div class="ttc" id="dhm_8h_html_a29ed83b8442b715e03990f438d4bce98"><div class="ttname"><a href="dhm_8h.html#a29ed83b8442b715e03990f438d4bce98">POLARSSL_ERR_DHM_MAKE_PUBLIC_FAILED</a></div><div class="ttdeci">#define POLARSSL_ERR_DHM_MAKE_PUBLIC_FAILED</div><div class="ttdoc">Making of the public value failed. </div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00039">dhm.h:39</a></div></div>
<div class="ttc" id="structdhm__context_html_aa7a62936ac382d115c9a5c1f675125f4"><div class="ttname"><a href="structdhm__context.html#aa7a62936ac382d115c9a5c1f675125f4">dhm_context::P</a></div><div class="ttdeci">mpi P</div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00159">dhm.h:159</a></div></div>
<div class="ttc" id="dhm_8h_html_a3e27f309924f0bf267c7de08bc6125b5"><div class="ttname"><a href="dhm_8h.html#a3e27f309924f0bf267c7de08bc6125b5">POLARSSL_ERR_DHM_MAKE_PARAMS_FAILED</a></div><div class="ttdeci">#define POLARSSL_ERR_DHM_MAKE_PARAMS_FAILED</div><div class="ttdoc">Making of the DHM parameters failed. </div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00037">dhm.h:37</a></div></div>
<div class="ttc" id="test__suite__aes_8cbc_8c_html_afc6a7362c0f0c9cfa8fc76b3281e2b37"><div class="ttname"><a href="test__suite__aes_8cbc_8c.html#afc6a7362c0f0c9cfa8fc76b3281e2b37">polarssl_printf</a></div><div class="ttdeci">#define polarssl_printf</div><div class="ttdef"><b>Definition:</b> <a href="test__suite__aes_8cbc_8c_source.html#l00309">test_suite_aes.cbc.c:309</a></div></div>
<div class="ttc" id="dhm_8h_html_abd146afeae00caff8a5619ae884149db"><div class="ttname"><a href="dhm_8h.html#abd146afeae00caff8a5619ae884149db">POLARSSL_ERR_DHM_INVALID_FORMAT</a></div><div class="ttdeci">#define POLARSSL_ERR_DHM_INVALID_FORMAT</div><div class="ttdoc">The ASN.1 data is not formatted correctly. </div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00041">dhm.h:41</a></div></div>
<div class="ttc" id="group__asn1__module_html_gaffc1c105d348cf2be47a2c8d6ab5ef63"><div class="ttname"><a href="group__asn1__module.html#gaffc1c105d348cf2be47a2c8d6ab5ef63">POLARSSL_ERR_ASN1_LENGTH_MISMATCH</a></div><div class="ttdeci">#define POLARSSL_ERR_ASN1_LENGTH_MISMATCH</div><div class="ttdoc">Actual length differs from expected length. </div><div class="ttdef"><b>Definition:</b> <a href="asn1_8h_source.html#l00057">asn1.h:57</a></div></div>
<div class="ttc" id="structdhm__context_html"><div class="ttname"><a href="structdhm__context.html">dhm_context</a></div><div class="ttdoc">DHM context structure. </div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00156">dhm.h:156</a></div></div>
<div class="ttc" id="test__suite__aes_8cbc_8c_html_a2a0cfb9e59f28e2a1a5fd1880fb20d4b"><div class="ttname"><a href="test__suite__aes_8cbc_8c.html#a2a0cfb9e59f28e2a1a5fd1880fb20d4b">polarssl_malloc</a></div><div class="ttdeci">#define polarssl_malloc</div><div class="ttdef"><b>Definition:</b> <a href="test__suite__aes_8cbc_8c_source.html#l00310">test_suite_aes.cbc.c:310</a></div></div>
<div class="ttc" id="dhm_8h_html_ab4f6609fa29638c85e6d401954d02845"><div class="ttname"><a href="dhm_8h.html#ab4f6609fa29638c85e6d401954d02845">POLARSSL_ERR_DHM_CALC_SECRET_FAILED</a></div><div class="ttdeci">#define POLARSSL_ERR_DHM_CALC_SECRET_FAILED</div><div class="ttdoc">Calculation of the DHM secret failed. </div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00040">dhm.h:40</a></div></div>
<div class="ttc" id="bignum_8h_html_a5ac8858041a8d5b49c11d38fd4069975"><div class="ttname"><a href="bignum_8h.html#a5ac8858041a8d5b49c11d38fd4069975">mpi_fill_random</a></div><div class="ttdeci">int mpi_fill_random(mpi *X, size_t size, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)</div><div class="ttdoc">Fill an MPI X with size bytes of random. </div></div>
<div class="ttc" id="test__suite__aes_8cbc_8c_html_a3c8219c194813f302bf78fe73566cb2d"><div class="ttname"><a href="test__suite__aes_8cbc_8c.html#a3c8219c194813f302bf78fe73566cb2d">polarssl_free</a></div><div class="ttdeci">#define polarssl_free</div><div class="ttdef"><b>Definition:</b> <a href="test__suite__aes_8cbc_8c_source.html#l00311">test_suite_aes.cbc.c:311</a></div></div>
<div class="ttc" id="dhm_8h_html_ac3d150ca9ea33ba5355738f56907907c"><div class="ttname"><a href="dhm_8h.html#ac3d150ca9ea33ba5355738f56907907c">POLARSSL_ERR_DHM_MALLOC_FAILED</a></div><div class="ttdeci">#define POLARSSL_ERR_DHM_MALLOC_FAILED</div><div class="ttdoc">Allocation of memory failed. </div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00042">dhm.h:42</a></div></div>
<div class="ttc" id="dhm_8h_html_a61cc4f6b8b132f50e34b6f42b74d08fa"><div class="ttname"><a href="dhm_8h.html#a61cc4f6b8b132f50e34b6f42b74d08fa">dhm_self_test</a></div><div class="ttdeci">int dhm_self_test(int verbose)</div><div class="ttdoc">Checkup routine. </div></div>
<div class="ttc" id="structdhm__context_html_a52cd454282f8c2b590d89d7078a43783"><div class="ttname"><a href="structdhm__context.html#a52cd454282f8c2b590d89d7078a43783">dhm_context::GX</a></div><div class="ttdeci">mpi GX</div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00162">dhm.h:162</a></div></div>
<div class="ttc" id="group__asn1__module_html_ga9321fc9f2a5ef4103008fbe5c4b230df"><div class="ttname"><a href="group__asn1__module.html#ga9321fc9f2a5ef4103008fbe5c4b230df">ASN1_SEQUENCE</a></div><div class="ttdeci">#define ASN1_SEQUENCE</div><div class="ttdef"><b>Definition:</b> <a href="asn1_8h_source.html#l00082">asn1.h:82</a></div></div>
<div class="ttc" id="config_8h_html"><div class="ttname"><a href="config_8h.html">config.h</a></div><div class="ttdoc">Configuration options (set of defines) </div></div>
<div class="ttc" id="structdhm__context_html_a9840d3f5289b148101086d75f68aa61d"><div class="ttname"><a href="structdhm__context.html#a9840d3f5289b148101086d75f68aa61d">dhm_context::X</a></div><div class="ttdeci">mpi X</div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00161">dhm.h:161</a></div></div>
<div class="ttc" id="group__asn1__module_html_ga799d7b17a9532e1dadc8355f04477e27"><div class="ttname"><a href="group__asn1__module.html#ga799d7b17a9532e1dadc8355f04477e27">ASN1_CONSTRUCTED</a></div><div class="ttdeci">#define ASN1_CONSTRUCTED</div><div class="ttdef"><b>Definition:</b> <a href="asn1_8h_source.html#l00092">asn1.h:92</a></div></div>
<div class="ttc" id="bignum_8h_html_a007d6236aebb0ff4a3d92ce8f525a3ae"><div class="ttname"><a href="bignum_8h.html#a007d6236aebb0ff4a3d92ce8f525a3ae">mpi_lset</a></div><div class="ttdeci">int mpi_lset(mpi *X, t_sint z)</div><div class="ttdoc">Set value from integer. </div></div>
<div class="ttc" id="structmpi_html"><div class="ttname"><a href="structmpi.html">mpi</a></div><div class="ttdoc">MPI structure. </div><div class="ttdef"><b>Definition:</b> <a href="bignum_8h_source.html#l00182">bignum.h:182</a></div></div>
<div class="ttc" id="platform_8h_html"><div class="ttname"><a href="platform_8h.html">platform.h</a></div><div class="ttdoc">PolarSSL Platform abstraction layer. </div></div>
<div class="ttc" id="bignum_8h_html_a201666869f65225d6535bcc697f95c9b"><div class="ttname"><a href="bignum_8h.html#a201666869f65225d6535bcc697f95c9b">mpi_init</a></div><div class="ttdeci">void mpi_init(mpi *X)</div><div class="ttdoc">Initialize one MPI. </div></div>
<div class="ttc" id="bignum_8h_html_aec20dff9d78738e3c80b212df9875b83"><div class="ttname"><a href="bignum_8h.html#aec20dff9d78738e3c80b212df9875b83">mpi_cmp_mpi</a></div><div class="ttdeci">int mpi_cmp_mpi(const mpi *X, const mpi *Y)</div><div class="ttdoc">Compare signed values. </div></div>
<div class="ttc" id="structdhm__context_html_a8355290a08215a51d75aa10b86066da3"><div class="ttname"><a href="structdhm__context.html#a8355290a08215a51d75aa10b86066da3">dhm_context::len</a></div><div class="ttdeci">size_t len</div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00158">dhm.h:158</a></div></div>
<div class="ttc" id="bignum_8h_html_a01de1543da79d0ad0f58916d608f6ff8"><div class="ttname"><a href="bignum_8h.html#a01de1543da79d0ad0f58916d608f6ff8">mpi_shift_r</a></div><div class="ttdeci">int mpi_shift_r(mpi *X, size_t count)</div><div class="ttdoc">Right-shift: X &gt;&gt;= count. </div></div>
<div class="ttc" id="dhm_8h_html_a6c77d265f13f7333802b93172a6833aa"><div class="ttname"><a href="dhm_8h.html#a6c77d265f13f7333802b93172a6833aa">dhm_read_params</a></div><div class="ttdeci">int dhm_read_params(dhm_context *ctx, unsigned char **p, const unsigned char *end)</div><div class="ttdoc">Parse the ServerKeyExchange parameters. </div></div>
<div class="ttc" id="asn1_8h_html"><div class="ttname"><a href="asn1_8h.html">asn1.h</a></div><div class="ttdoc">Generic ASN.1 parsing. </div></div>
<div class="ttc" id="dhm_8h_html_a54e3f55659f632b8cce3159f113ee009"><div class="ttname"><a href="dhm_8h.html#a54e3f55659f632b8cce3159f113ee009">POLARSSL_ERR_DHM_READ_PUBLIC_FAILED</a></div><div class="ttdeci">#define POLARSSL_ERR_DHM_READ_PUBLIC_FAILED</div><div class="ttdoc">Reading of the public values failed. </div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00038">dhm.h:38</a></div></div>
<div class="ttc" id="pem_8h_html"><div class="ttname"><a href="pem_8h.html">pem.h</a></div><div class="ttdoc">Privacy Enhanced Mail (PEM) decoding. </div></div>
<div class="ttc" id="structdhm__context_html_a3aa710a0588e9329dbdd60f0d7b28638"><div class="ttname"><a href="structdhm__context.html#a3aa710a0588e9329dbdd60f0d7b28638">dhm_context::G</a></div><div class="ttdeci">mpi G</div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00160">dhm.h:160</a></div></div>
<div class="ttc" id="dhm_8h_html_aa739ef8a5b198350fb3a7b9b7a162c54"><div class="ttname"><a href="dhm_8h.html#aa739ef8a5b198350fb3a7b9b7a162c54">dhm_init</a></div><div class="ttdeci">void dhm_init(dhm_context *ctx)</div><div class="ttdoc">Initialize DHM context. </div></div>
<div class="ttc" id="dhm_8h_html_a1cf5b743957392157fefae2d1ceef39f"><div class="ttname"><a href="dhm_8h.html#a1cf5b743957392157fefae2d1ceef39f">POLARSSL_ERR_DHM_READ_PARAMS_FAILED</a></div><div class="ttdeci">#define POLARSSL_ERR_DHM_READ_PARAMS_FAILED</div><div class="ttdoc">Reading of the DHM parameters failed. </div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00036">dhm.h:36</a></div></div>
<div class="ttc" id="bignum_8h_html_a090616da16b87653c025874e1675da79"><div class="ttname"><a href="bignum_8h.html#a090616da16b87653c025874e1675da79">mpi_inv_mod</a></div><div class="ttdeci">int mpi_inv_mod(mpi *X, const mpi *A, const mpi *N)</div><div class="ttdoc">Modular inverse: X = A^-1 mod N. </div></div>
<div class="ttc" id="structdhm__context_html_a74e8d6bf6068235c5bc720752e056a80"><div class="ttname"><a href="structdhm__context.html#a74e8d6bf6068235c5bc720752e056a80">dhm_context::GY</a></div><div class="ttdeci">mpi GY</div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00163">dhm.h:163</a></div></div>
<div class="ttc" id="bignum_8h_html_ae1f6507671587755e46bbf0afcae6a8c"><div class="ttname"><a href="bignum_8h.html#ae1f6507671587755e46bbf0afcae6a8c">mpi_free</a></div><div class="ttdeci">void mpi_free(mpi *X)</div><div class="ttdoc">Unallocate one MPI. </div></div>
<div class="ttc" id="dhm_8h_html"><div class="ttname"><a href="dhm_8h.html">dhm.h</a></div><div class="ttdoc">Diffie-Hellman-Merkle key exchange. </div></div>
<div class="ttc" id="bignum_8h_html_a84befed1943a584332e0599605b0d3fe"><div class="ttname"><a href="bignum_8h.html#a84befed1943a584332e0599605b0d3fe">mpi_exp_mod</a></div><div class="ttdeci">int mpi_exp_mod(mpi *X, const mpi *A, const mpi *E, const mpi *N, mpi *_RR)</div><div class="ttdoc">Sliding-window exponentiation: X = A^E mod N. </div></div>
<div class="ttc" id="structdhm__context_html_a97d4e78ea6d6c557c74079297515b150"><div class="ttname"><a href="structdhm__context.html#a97d4e78ea6d6c557c74079297515b150">dhm_context::K</a></div><div class="ttdeci">mpi K</div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00164">dhm.h:164</a></div></div>
<div class="ttc" id="structdhm__context_html_a7135c7844859c5874d785f874cf049b4"><div class="ttname"><a href="structdhm__context.html#a7135c7844859c5874d785f874cf049b4">dhm_context::RP</a></div><div class="ttdeci">mpi RP</div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00165">dhm.h:165</a></div></div>
<div class="ttc" id="bignum_8h_html_a0235008cccbf00b8bc03699de8094819"><div class="ttname"><a href="bignum_8h.html#a0235008cccbf00b8bc03699de8094819">mpi_read_binary</a></div><div class="ttdeci">int mpi_read_binary(mpi *X, const unsigned char *buf, size_t buflen)</div><div class="ttdoc">Import X from unsigned binary data, big endian. </div></div>
<div class="ttc" id="structdhm__context_html_a4d4c3b8963fc94656f4c76c6682a73c6"><div class="ttname"><a href="structdhm__context.html#a4d4c3b8963fc94656f4c76c6682a73c6">dhm_context::Vi</a></div><div class="ttdeci">mpi Vi</div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00166">dhm.h:166</a></div></div>
<div class="ttc" id="certs_8h_html"><div class="ttname"><a href="certs_8h.html">certs.h</a></div><div class="ttdoc">Sample certificates and DHM parameters for testing. </div></div>
<div class="ttc" id="dhm_8h_html_a1504ee72125df9a4f8ba4f732d231d31"><div class="ttname"><a href="dhm_8h.html#a1504ee72125df9a4f8ba4f732d231d31">dhm_make_public</a></div><div class="ttdeci">int dhm_make_public(dhm_context *ctx, int x_size, unsigned char *output, size_t olen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)</div><div class="ttdoc">Create own private value X and export G^X. </div></div>
<div class="ttc" id="bignum_8h_html_a8aa3a3d3aac9e49879ea8cd308859d23"><div class="ttname"><a href="bignum_8h.html#a8aa3a3d3aac9e49879ea8cd308859d23">mpi_size</a></div><div class="ttdeci">size_t mpi_size(const mpi *X)</div><div class="ttdoc">Return the total size in bytes. </div></div>
<div class="ttc" id="dhm_8h_html_aebb6ccd367ebc3306b71fd214530c2c2"><div class="ttname"><a href="dhm_8h.html#aebb6ccd367ebc3306b71fd214530c2c2">POLARSSL_ERR_DHM_FILE_IO_ERROR</a></div><div class="ttdeci">#define POLARSSL_ERR_DHM_FILE_IO_ERROR</div><div class="ttdoc">Read/write of file failed. </div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00043">dhm.h:43</a></div></div>
<div class="ttc" id="bignum_8h_html_a6fbcce39a9d92d9e2a560f8aa6a810f4"><div class="ttname"><a href="bignum_8h.html#a6fbcce39a9d92d9e2a560f8aa6a810f4">mpi_copy</a></div><div class="ttdeci">int mpi_copy(mpi *X, const mpi *Y)</div><div class="ttdoc">Copy the contents of Y into X. </div></div>
<div class="ttc" id="bignum_8h_html_a075d3cf21cb3733e5f0a872e72b0cd15"><div class="ttname"><a href="bignum_8h.html#a075d3cf21cb3733e5f0a872e72b0cd15">mpi_mod_mpi</a></div><div class="ttdeci">int mpi_mod_mpi(mpi *R, const mpi *A, const mpi *B)</div><div class="ttdoc">Modulo: R = A mod B. </div></div>
<div class="ttc" id="asn1_8h_html_af7d10ad8e91ae5cb4a78f7d7dc1a8ac6"><div class="ttname"><a href="asn1_8h.html#af7d10ad8e91ae5cb4a78f7d7dc1a8ac6">asn1_get_tag</a></div><div class="ttdeci">int asn1_get_tag(unsigned char **p, const unsigned char *end, size_t *len, int tag)</div><div class="ttdoc">Get the tag and length of the tag. </div></div>
<div class="ttc" id="bignum_8h_html_a5d464b4312859ce4969d114eb5e02741"><div class="ttname"><a href="bignum_8h.html#a5d464b4312859ce4969d114eb5e02741">mpi_write_binary</a></div><div class="ttdeci">int mpi_write_binary(const mpi *X, unsigned char *buf, size_t buflen)</div><div class="ttdoc">Export X into unsigned binary data, big endian. </div></div>
<div class="ttc" id="group__x509__module_html_ga99888623ed4f805c0e58b705a534c8e5"><div class="ttname"><a href="group__x509__module.html#ga99888623ed4f805c0e58b705a534c8e5">dhm_parse_dhm</a></div><div class="ttdeci">int dhm_parse_dhm(dhm_context *dhm, const unsigned char *dhmin, size_t dhminlen)</div><div class="ttdoc">Parse DHM parameters. </div></div>
<div class="ttc" id="dhm_8h_html_ada3c785f695c3d513177dd45d3c6f254"><div class="ttname"><a href="dhm_8h.html#ada3c785f695c3d513177dd45d3c6f254">dhm_free</a></div><div class="ttdeci">void dhm_free(dhm_context *ctx)</div><div class="ttdoc">Free and clear the components of a DHM key. </div></div>
<div class="ttc" id="dhm_8h_html_ab1f102e6347b0cc8c49d525964d7c996"><div class="ttname"><a href="dhm_8h.html#ab1f102e6347b0cc8c49d525964d7c996">POLARSSL_ERR_DHM_BAD_INPUT_DATA</a></div><div class="ttdeci">#define POLARSSL_ERR_DHM_BAD_INPUT_DATA</div><div class="ttdoc">Bad input parameters to function. </div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00035">dhm.h:35</a></div></div>
<div class="ttc" id="pem_8h_html_aba55809b3ae6781d4ab92ccdfbe54a9c"><div class="ttname"><a href="pem_8h.html#aba55809b3ae6781d4ab92ccdfbe54a9c">POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT</a></div><div class="ttdeci">#define POLARSSL_ERR_PEM_NO_HEADER_FOOTER_PRESENT</div><div class="ttdoc">No PEM header or footer found. </div><div class="ttdef"><b>Definition:</b> <a href="pem_8h_source.html#l00038">pem.h:38</a></div></div>
<div class="ttc" id="bignum_8h_html_ab63bfb07b27db84268491cd7d68bddc0"><div class="ttname"><a href="bignum_8h.html#ab63bfb07b27db84268491cd7d68bddc0">mpi_mul_mpi</a></div><div class="ttdeci">int mpi_mul_mpi(mpi *X, const mpi *A, const mpi *B)</div><div class="ttdoc">Baseline multiplication: X = A * B. </div></div>
<div class="ttc" id="structdhm__context_html_a9cb06cc714a206eb701744daffd42996"><div class="ttname"><a href="structdhm__context.html#a9cb06cc714a206eb701744daffd42996">dhm_context::pX</a></div><div class="ttdeci">mpi pX</div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00168">dhm.h:168</a></div></div>
<div class="ttc" id="asn1_8h_html_a9241caf4492b2405e48db346205af62f"><div class="ttname"><a href="asn1_8h.html#a9241caf4492b2405e48db346205af62f">asn1_get_mpi</a></div><div class="ttdeci">int asn1_get_mpi(unsigned char **p, const unsigned char *end, mpi *X)</div><div class="ttdoc">Retrieve a MPI value from an integer ASN.1 tag. </div></div>
<div class="ttc" id="bignum_8h_html_acfdf0f6effb7f976a2f90844c492e160"><div class="ttname"><a href="bignum_8h.html#acfdf0f6effb7f976a2f90844c492e160">mpi_sub_int</a></div><div class="ttdeci">int mpi_sub_int(mpi *X, const mpi *A, t_sint b)</div><div class="ttdoc">Signed subtraction: X = A - b. </div></div>
<div class="ttc" id="structdhm__context_html_a35d487c8c5e9618a216ae7917df3bfba"><div class="ttname"><a href="structdhm__context.html#a35d487c8c5e9618a216ae7917df3bfba">dhm_context::Vf</a></div><div class="ttdeci">mpi Vf</div><div class="ttdef"><b>Definition:</b> <a href="dhm_8h_source.html#l00167">dhm.h:167</a></div></div>
<div class="ttc" id="group__x509__module_html_gab51d126333172f165a67ac6f5dd2a910"><div class="ttname"><a href="group__x509__module.html#gab51d126333172f165a67ac6f5dd2a910">dhm_parse_dhmfile</a></div><div class="ttdeci">int dhm_parse_dhmfile(dhm_context *dhm, const char *path)</div><div class="ttdoc">Load and parse DHM parameters. </div></div>
<div class="ttc" id="dhm_8h_html_a23357e363671873e068cd7c206a35d92"><div class="ttname"><a href="dhm_8h.html#a23357e363671873e068cd7c206a35d92">dhm_make_params</a></div><div class="ttdeci">int dhm_make_params(dhm_context *ctx, int x_size, unsigned char *output, size_t *olen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)</div><div class="ttdoc">Setup and write the ServerKeyExchange parameters. </div></div>
<div class="ttc" id="bignum_8h_html_ac42cb2c2b13df48182ee833de2e4adbf"><div class="ttname"><a href="bignum_8h.html#ac42cb2c2b13df48182ee833de2e4adbf">POLARSSL_ERR_MPI_NOT_ACCEPTABLE</a></div><div class="ttdeci">#define POLARSSL_ERR_MPI_NOT_ACCEPTABLE</div><div class="ttdoc">The input arguments are not acceptable. </div><div class="ttdef"><b>Definition:</b> <a href="bignum_8h_source.html#l00062">bignum.h:62</a></div></div>
<div class="ttc" id="dhm_8h_html_a04a6ae0b94659777f031820cb2eb1b5d"><div class="ttname"><a href="dhm_8h.html#a04a6ae0b94659777f031820cb2eb1b5d">dhm_read_public</a></div><div class="ttdeci">int dhm_read_public(dhm_context *ctx, const unsigned char *input, size_t ilen)</div><div class="ttdoc">Import the peer&#39;s public value G^Y. </div></div>
<div class="ttc" id="bignum_8h_html_a024b186dd3608bcbcfc9dd36212a18ec"><div class="ttname"><a href="bignum_8h.html#a024b186dd3608bcbcfc9dd36212a18ec">MPI_CHK</a></div><div class="ttdeci">#define MPI_CHK(f)</div><div class="ttdef"><b>Definition:</b> <a href="bignum_8h_source.html#l00065">bignum.h:65</a></div></div>
<div class="ttc" id="dhm_8h_html_a4a0a7ae7821c1925baa33c2797052f30"><div class="ttname"><a href="dhm_8h.html#a4a0a7ae7821c1925baa33c2797052f30">dhm_calc_secret</a></div><div class="ttdeci">int dhm_calc_secret(dhm_context *ctx, unsigned char *output, size_t *olen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)</div><div class="ttdoc">Derive and export the shared secret (G^Y)^X mod P. </div></div>
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