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<a href="ctr__drbg_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> </div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">/*</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * Copyright (C) 2006-2018, Arm Limited (or its affiliates), All Rights Reserved</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * SPDX-License-Identifier: Apache-2.0</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * Licensed under the Apache License, Version 2.0 (the "License"); you may</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * not use this file except in compliance with the License.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * You may obtain a copy of the License at</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> *</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> *</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * limitations under the License.</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"> * This file is part of Mbed TLS (https://tls.mbed.org)</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> */</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#ifndef MBEDTLS_CTR_DRBG_H</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_H</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">#include "<a class="code" href="aes_8h.html">aes.h</a>"</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#if defined(MBEDTLS_THREADING_C)</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include "<a class="code" href="threading_8h.html">mbedtls/threading.h</a>"</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#a15d1931ea5d133062cd93a3374a5bcf0"> 37</a></span> <span class="preprocessor">#define MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED -0x0034 </span></div><div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#aea1a5c82ce0f69dfdda2d3131bd1b5e1"> 38</a></span> <span class="preprocessor">#define MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG -0x0036 </span></div><div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#a7367c2feaa7ee9f4f182ff1cb03a864e"> 39</a></span> <span class="preprocessor">#define MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG -0x0038 </span></div><div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#ab5f1b73efeca5de8e75c273d47b8274e"> 40</a></span> <span class="preprocessor">#define MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR -0x003A </span></div><div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#a73f77e540752ebec67e2477f776ed8a9"> 42</a></span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_BLOCKSIZE 16 </span></div><div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#af81b83e7d7d9709f0b61c6ee34ee848e"> 43</a></span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_KEYSIZE 32 </span></div><div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#a7f8b48d6ce94003298bbbae9fb514e8a"> 44</a></span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_KEYBITS ( MBEDTLS_CTR_DRBG_KEYSIZE * 8 ) </span></div><div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#a8e6ac8e75c3becda32d9bc7b8ac2c23a"> 45</a></span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_SEEDLEN ( MBEDTLS_CTR_DRBG_KEYSIZE + MBEDTLS_CTR_DRBG_BLOCKSIZE ) </span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor">#if !defined(MBEDTLS_CTR_DRBG_ENTROPY_LEN)</span></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor">#if defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256)</span></div><div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#ac71c76b50eb79055e11f86d0d796b979"> 58</a></span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_ENTROPY_LEN 48</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_ENTROPY_LEN 32</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="preprocessor">#endif</span></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="preprocessor">#if !defined(MBEDTLS_CTR_DRBG_RESEED_INTERVAL)</span></div><div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#af48f34760ba188dfc8e851c66e891c19"> 73</a></span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_RESEED_INTERVAL 10000</span></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> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="preprocessor">#if !defined(MBEDTLS_CTR_DRBG_MAX_INPUT)</span></div><div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#a9eeb62804173b22977cca5a7565bbe78"> 78</a></span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_MAX_INPUT 256</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="preprocessor">#if !defined(MBEDTLS_CTR_DRBG_MAX_REQUEST)</span></div><div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#a5b787e6157d91055d7c07d40f519cf52"> 83</a></span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_MAX_REQUEST 1024</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="preprocessor">#if !defined(MBEDTLS_CTR_DRBG_MAX_SEED_INPUT)</span></div><div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#a1b944a1ceb01e5749008fbf27a6706e4"> 88</a></span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_MAX_SEED_INPUT 384</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment">/* \} name SECTION: Module settings */</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#a9651ed4c66749bb7f232b93681593834"> 94</a></span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_PR_OFF 0</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="ctr__drbg_8h.html#ae534608231e768e8cf4010e1aa74dba8"> 96</a></span> <span class="preprocessor">#define MBEDTLS_CTR_DRBG_PR_ON 1</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div><div class="line"><a name="l00106"></a><span class="lineno"><a class="line" href="structmbedtls__ctr__drbg__context.html"> 106</a></span> <span class="keyword">typedef</span> <span class="keyword">struct</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> {</div><div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="structmbedtls__ctr__drbg__context.html#a45ccb95b2b7828711c158fc4a06d41fc"> 108</a></span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> counter[16]; </div><div class="line"><a name="l00109"></a><span class="lineno"><a class="line" href="structmbedtls__ctr__drbg__context.html#abdbeba1194553f4f1a3534712dc0c9f9"> 109</a></span>  <span class="keywordtype">int</span> <a class="code" href="structmbedtls__ctr__drbg__context.html#abdbeba1194553f4f1a3534712dc0c9f9">reseed_counter</a>; </div><div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="structmbedtls__ctr__drbg__context.html#ae521e373913548f732e0cdfe3e82d2ac"> 110</a></span>  <span class="keywordtype">int</span> <a class="code" href="structmbedtls__ctr__drbg__context.html#ae521e373913548f732e0cdfe3e82d2ac">prediction_resistance</a>; </div><div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="structmbedtls__ctr__drbg__context.html#aa874779eab1f355824ff692b33755476"> 114</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="structmbedtls__ctr__drbg__context.html#aa874779eab1f355824ff692b33755476">entropy_len</a>; </div><div class="line"><a name="l00116"></a><span class="lineno"><a class="line" href="structmbedtls__ctr__drbg__context.html#a7b048c97f8dc916d89a0c7cd9d7f8522"> 116</a></span>  <span class="keywordtype">int</span> <a class="code" href="structmbedtls__ctr__drbg__context.html#a7b048c97f8dc916d89a0c7cd9d7f8522">reseed_interval</a>; </div><div class="line"><a name="l00118"></a><span class="lineno"><a class="line" href="structmbedtls__ctr__drbg__context.html#ab9513701b8389770eb294cbc4267ff92"> 118</a></span>  <a class="code" href="structmbedtls__aes__context.html">mbedtls_aes_context</a> <a class="code" href="structmbedtls__ctr__drbg__context.html#ab9513701b8389770eb294cbc4267ff92">aes_ctx</a>; </div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">/*</span></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> * Callbacks (Entropy)</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> */</span></div><div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="structmbedtls__ctr__drbg__context.html#a996a460946cf035a5de799c6fc905f62"> 123</a></span>  int (*f_entropy)(<span class="keywordtype">void</span> *, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *, size_t);</div><div class="line"><a name="l00126"></a><span class="lineno"><a class="line" href="structmbedtls__ctr__drbg__context.html#a85ca46b24fc75d3d1c091835c8c2e0b4"> 126</a></span>  <span class="keywordtype">void</span> *<a class="code" href="structmbedtls__ctr__drbg__context.html#a85ca46b24fc75d3d1c091835c8c2e0b4">p_entropy</a>; </div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="preprocessor">#if defined(MBEDTLS_THREADING_C)</span></div><div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="structmbedtls__ctr__drbg__context.html#a93373c08a495435d54b7964fc105d713"> 129</a></span>  <a class="code" href="structmbedtls__threading__mutex__t.html">mbedtls_threading_mutex_t</a> <a class="code" href="structmbedtls__ctr__drbg__context.html#a93373c08a495435d54b7964fc105d713">mutex</a>;</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> }</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <a class="code" href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a>;</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="keywordtype">void</span> <a class="code" href="ctr__drbg_8h.html#a70dbec5e03601bf437ec488f2645743b">mbedtls_ctr_drbg_init</a>( <a class="code" href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a> *ctx );</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="keywordtype">int</span> <a class="code" href="ctr__drbg_8h.html#ad93d675f998550b4478c1fe6f4f34ebc">mbedtls_ctr_drbg_seed</a>( <a class="code" href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a> *ctx,</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordtype">int</span> (*f_entropy)(<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="l00164"></a><span class="lineno"> 164</span>  <span class="keywordtype">void</span> *p_entropy,</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *custom,</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordtype">size_t</span> len );</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="keywordtype">void</span> <a class="code" href="ctr__drbg_8h.html#a1ea42b9eb6f6b33c82359f4c0a57ca43">mbedtls_ctr_drbg_free</a>( <a class="code" href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a> *ctx );</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="keywordtype">void</span> <a class="code" href="ctr__drbg_8h.html#ae9871c5ba6b2fa5189423ef7cbe2078b">mbedtls_ctr_drbg_set_prediction_resistance</a>( <a class="code" href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a> *ctx,</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordtype">int</span> resistance );</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="keywordtype">void</span> <a class="code" href="ctr__drbg_8h.html#af33ced4a1fc79c6abbc1cb2b17f14549">mbedtls_ctr_drbg_set_entropy_len</a>( <a class="code" href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a> *ctx,</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordtype">size_t</span> len );</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="keywordtype">void</span> <a class="code" href="ctr__drbg_8h.html#aefd5f442f96682f0cef0152866e4e46e">mbedtls_ctr_drbg_set_reseed_interval</a>( <a class="code" href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a> *ctx,</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordtype">int</span> interval );</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="keywordtype">int</span> <a class="code" href="ctr__drbg_8h.html#a495e3c86df7fc166454d0e85262e40a6">mbedtls_ctr_drbg_reseed</a>( <a class="code" href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a> *ctx,</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *additional, <span class="keywordtype">size_t</span> len );</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="keywordtype">void</span> <a class="code" href="ctr__drbg_8h.html#a79d4bdb84d0c13f4bb28d5c3c6de4011">mbedtls_ctr_drbg_update</a>( <a class="code" href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a> *ctx,</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *additional, <span class="keywordtype">size_t</span> add_len );</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="keywordtype">int</span> <a class="code" href="ctr__drbg_8h.html#a18161010cbcf33f6930fa8fdc035e74d">mbedtls_ctr_drbg_random_with_add</a>( <span class="keywordtype">void</span> *p_rng,</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *output, <span class="keywordtype">size_t</span> output_len,</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *additional, <span class="keywordtype">size_t</span> add_len );</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="keywordtype">int</span> <a class="code" href="ctr__drbg_8h.html#af6e4dd295ae790a33128562dd01c79ab">mbedtls_ctr_drbg_random</a>( <span class="keywordtype">void</span> *p_rng,</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *output, <span class="keywordtype">size_t</span> output_len );</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> <span class="preprocessor">#if defined(MBEDTLS_FS_IO)</span></div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span> </div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="keywordtype">int</span> <a class="code" href="ctr__drbg_8h.html#af8411dc8a4d9b2a7a5b4adf2ff3d9586">mbedtls_ctr_drbg_write_seed_file</a>( <a class="code" href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a> *ctx, <span class="keyword">const</span> <span class="keywordtype">char</span> *path );</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span> </div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="keywordtype">int</span> <a class="code" href="ctr__drbg_8h.html#a2dd8fb85c308475ca743aa634d4b0b96">mbedtls_ctr_drbg_update_seed_file</a>( <a class="code" href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a> *ctx, <span class="keyword">const</span> <span class="keywordtype">char</span> *path );</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="preprocessor">#endif </span><span class="comment">/* MBEDTLS_FS_IO */</span><span class="preprocessor"></span></div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span> </div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span> <span class="keywordtype">int</span> <a class="code" href="ctr__drbg_8h.html#a6f4c2d5ae50d4f122a6a1468480a9c3e">mbedtls_ctr_drbg_self_test</a>( <span class="keywordtype">int</span> verbose );</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span> </div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="comment">/* Internal functions (do not call directly) */</span></div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="keywordtype">int</span> <a class="code" href="ctr__drbg_8h.html#a83d6faba281bf4b6275bbfffb3efb3de">mbedtls_ctr_drbg_seed_entropy_len</a>( <a class="code" href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a> *,</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keywordtype">int</span> (*)(<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> *,</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *, <span class="keywordtype">size_t</span>, <span class="keywordtype">size_t</span> );</div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span> </div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span> <span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span> }</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span> </div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <span class="preprocessor">#endif </span><span class="comment">/* ctr_drbg.h */</span><span class="preprocessor"></span></div><div class="ttc" id="structmbedtls__ctr__drbg__context_html"><div class="ttname"><a href="structmbedtls__ctr__drbg__context.html">mbedtls_ctr_drbg_context</a></div><div class="ttdoc">The CTR_DRBG context structure. </div><div class="ttdef"><b>Definition:</b> <a href="ctr__drbg_8h_source.html#l00106">ctr_drbg.h:106</a></div></div>
<div class="ttc" id="ctr__drbg_8h_html_a1ea42b9eb6f6b33c82359f4c0a57ca43"><div class="ttname"><a href="ctr__drbg_8h.html#a1ea42b9eb6f6b33c82359f4c0a57ca43">mbedtls_ctr_drbg_free</a></div><div class="ttdeci">void mbedtls_ctr_drbg_free(mbedtls_ctr_drbg_context *ctx)</div><div class="ttdoc">This function clears CTR_CRBG context data. </div></div>
<div class="ttc" id="ctr__drbg_8h_html_a79d4bdb84d0c13f4bb28d5c3c6de4011"><div class="ttname"><a href="ctr__drbg_8h.html#a79d4bdb84d0c13f4bb28d5c3c6de4011">mbedtls_ctr_drbg_update</a></div><div class="ttdeci">void mbedtls_ctr_drbg_update(mbedtls_ctr_drbg_context *ctx, const unsigned char *additional, size_t add_len)</div><div class="ttdoc">This function updates the state of the CTR_DRBG context. </div></div>
<div class="ttc" id="ctr__drbg_8h_html_a83d6faba281bf4b6275bbfffb3efb3de"><div class="ttname"><a href="ctr__drbg_8h.html#a83d6faba281bf4b6275bbfffb3efb3de">mbedtls_ctr_drbg_seed_entropy_len</a></div><div class="ttdeci">int mbedtls_ctr_drbg_seed_entropy_len(mbedtls_ctr_drbg_context *, int(*)(void *, unsigned char *, size_t), void *, const unsigned char *, size_t, size_t)</div></div>
<div class="ttc" id="structmbedtls__ctr__drbg__context_html_ae521e373913548f732e0cdfe3e82d2ac"><div class="ttname"><a href="structmbedtls__ctr__drbg__context.html#ae521e373913548f732e0cdfe3e82d2ac">mbedtls_ctr_drbg_context::prediction_resistance</a></div><div class="ttdeci">int prediction_resistance</div><div class="ttdef"><b>Definition:</b> <a href="ctr__drbg_8h_source.html#l00110">ctr_drbg.h:110</a></div></div>
<div class="ttc" id="ctr__drbg_8h_html_a70dbec5e03601bf437ec488f2645743b"><div class="ttname"><a href="ctr__drbg_8h.html#a70dbec5e03601bf437ec488f2645743b">mbedtls_ctr_drbg_init</a></div><div class="ttdeci">void mbedtls_ctr_drbg_init(mbedtls_ctr_drbg_context *ctx)</div><div class="ttdoc">This function initializes the CTR_DRBG context, and prepares it for mbedtls_ctr_drbg_seed() or mbedtl...</div></div>
<div class="ttc" id="structmbedtls__ctr__drbg__context_html_a93373c08a495435d54b7964fc105d713"><div class="ttname"><a href="structmbedtls__ctr__drbg__context.html#a93373c08a495435d54b7964fc105d713">mbedtls_ctr_drbg_context::mutex</a></div><div class="ttdeci">mbedtls_threading_mutex_t mutex</div><div class="ttdef"><b>Definition:</b> <a href="ctr__drbg_8h_source.html#l00129">ctr_drbg.h:129</a></div></div>
<div class="ttc" id="ctr__drbg_8h_html_af6e4dd295ae790a33128562dd01c79ab"><div class="ttname"><a href="ctr__drbg_8h.html#af6e4dd295ae790a33128562dd01c79ab">mbedtls_ctr_drbg_random</a></div><div class="ttdeci">int mbedtls_ctr_drbg_random(void *p_rng, unsigned char *output, size_t output_len)</div><div class="ttdoc">This function uses CTR_DRBG to generate random data. </div></div>
<div class="ttc" id="ctr__drbg_8h_html_af8411dc8a4d9b2a7a5b4adf2ff3d9586"><div class="ttname"><a href="ctr__drbg_8h.html#af8411dc8a4d9b2a7a5b4adf2ff3d9586">mbedtls_ctr_drbg_write_seed_file</a></div><div class="ttdeci">int mbedtls_ctr_drbg_write_seed_file(mbedtls_ctr_drbg_context *ctx, const char *path)</div><div class="ttdoc">This function writes a seed file. </div></div>
<div class="ttc" id="ctr__drbg_8h_html_aefd5f442f96682f0cef0152866e4e46e"><div class="ttname"><a href="ctr__drbg_8h.html#aefd5f442f96682f0cef0152866e4e46e">mbedtls_ctr_drbg_set_reseed_interval</a></div><div class="ttdeci">void mbedtls_ctr_drbg_set_reseed_interval(mbedtls_ctr_drbg_context *ctx, int interval)</div><div class="ttdoc">This function sets the reseed interval. The default value is MBEDTLS_CTR_DRBG_RESEED_INTERVAL. </div></div>
<div class="ttc" id="ctr__drbg_8h_html_ae9871c5ba6b2fa5189423ef7cbe2078b"><div class="ttname"><a href="ctr__drbg_8h.html#ae9871c5ba6b2fa5189423ef7cbe2078b">mbedtls_ctr_drbg_set_prediction_resistance</a></div><div class="ttdeci">void mbedtls_ctr_drbg_set_prediction_resistance(mbedtls_ctr_drbg_context *ctx, int resistance)</div><div class="ttdoc">This function turns prediction resistance on or off. The default value is off. </div></div>
<div class="ttc" id="ctr__drbg_8h_html_a495e3c86df7fc166454d0e85262e40a6"><div class="ttname"><a href="ctr__drbg_8h.html#a495e3c86df7fc166454d0e85262e40a6">mbedtls_ctr_drbg_reseed</a></div><div class="ttdeci">int mbedtls_ctr_drbg_reseed(mbedtls_ctr_drbg_context *ctx, const unsigned char *additional, size_t len)</div><div class="ttdoc">This function reseeds the CTR_DRBG context, that is extracts data from the entropy source...</div></div>
<div class="ttc" id="threading_8h_html"><div class="ttname"><a href="threading_8h.html">threading.h</a></div><div class="ttdoc">Threading abstraction layer. </div></div>
<div class="ttc" id="ctr__drbg_8h_html_a2dd8fb85c308475ca743aa634d4b0b96"><div class="ttname"><a href="ctr__drbg_8h.html#a2dd8fb85c308475ca743aa634d4b0b96">mbedtls_ctr_drbg_update_seed_file</a></div><div class="ttdeci">int mbedtls_ctr_drbg_update_seed_file(mbedtls_ctr_drbg_context *ctx, const char *path)</div><div class="ttdoc">This function reads and updates a seed file. The seed is added to this instance. </div></div>
<div class="ttc" id="ctr__drbg_8h_html_a18161010cbcf33f6930fa8fdc035e74d"><div class="ttname"><a href="ctr__drbg_8h.html#a18161010cbcf33f6930fa8fdc035e74d">mbedtls_ctr_drbg_random_with_add</a></div><div class="ttdeci">int mbedtls_ctr_drbg_random_with_add(void *p_rng, unsigned char *output, size_t output_len, const unsigned char *additional, size_t add_len)</div><div class="ttdoc">This function updates a CTR_DRBG instance with additional data and uses it to generate random data...</div></div>
<div class="ttc" id="ctr__drbg_8h_html_af33ced4a1fc79c6abbc1cb2b17f14549"><div class="ttname"><a href="ctr__drbg_8h.html#af33ced4a1fc79c6abbc1cb2b17f14549">mbedtls_ctr_drbg_set_entropy_len</a></div><div class="ttdeci">void mbedtls_ctr_drbg_set_entropy_len(mbedtls_ctr_drbg_context *ctx, size_t len)</div><div class="ttdoc">This function sets the amount of entropy grabbed on each seed or reseed. The default value is MBEDTLS...</div></div>
<div class="ttc" id="structmbedtls__ctr__drbg__context_html_a7b048c97f8dc916d89a0c7cd9d7f8522"><div class="ttname"><a href="structmbedtls__ctr__drbg__context.html#a7b048c97f8dc916d89a0c7cd9d7f8522">mbedtls_ctr_drbg_context::reseed_interval</a></div><div class="ttdeci">int reseed_interval</div><div class="ttdef"><b>Definition:</b> <a href="ctr__drbg_8h_source.html#l00116">ctr_drbg.h:116</a></div></div>
<div class="ttc" id="aes_8h_html"><div class="ttname"><a href="aes_8h.html">aes.h</a></div><div class="ttdoc">The Advanced Encryption Standard (AES) specifies a FIPS-approved cryptographic algorithm that can be ...</div></div>
<div class="ttc" id="structmbedtls__threading__mutex__t_html"><div class="ttname"><a href="structmbedtls__threading__mutex__t.html">mbedtls_threading_mutex_t</a></div><div class="ttdef"><b>Definition:</b> <a href="threading_8h_source.html#l00045">threading.h:45</a></div></div>
<div class="ttc" id="ctr__drbg_8h_html_ad93d675f998550b4478c1fe6f4f34ebc"><div class="ttname"><a href="ctr__drbg_8h.html#ad93d675f998550b4478c1fe6f4f34ebc">mbedtls_ctr_drbg_seed</a></div><div class="ttdeci">int mbedtls_ctr_drbg_seed(mbedtls_ctr_drbg_context *ctx, int(*f_entropy)(void *, unsigned char *, size_t), void *p_entropy, const unsigned char *custom, size_t len)</div><div class="ttdoc">This function seeds and sets up the CTR_DRBG entropy source for future reseeds. </div></div>
<div class="ttc" id="ctr__drbg_8h_html_a6f4c2d5ae50d4f122a6a1468480a9c3e"><div class="ttname"><a href="ctr__drbg_8h.html#a6f4c2d5ae50d4f122a6a1468480a9c3e">mbedtls_ctr_drbg_self_test</a></div><div class="ttdeci">int mbedtls_ctr_drbg_self_test(int verbose)</div><div class="ttdoc">The CTR_DRBG checkup routine. </div></div>
<div class="ttc" id="structmbedtls__ctr__drbg__context_html_aa874779eab1f355824ff692b33755476"><div class="ttname"><a href="structmbedtls__ctr__drbg__context.html#aa874779eab1f355824ff692b33755476">mbedtls_ctr_drbg_context::entropy_len</a></div><div class="ttdeci">size_t entropy_len</div><div class="ttdef"><b>Definition:</b> <a href="ctr__drbg_8h_source.html#l00114">ctr_drbg.h:114</a></div></div>
<div class="ttc" id="structmbedtls__ctr__drbg__context_html_ab9513701b8389770eb294cbc4267ff92"><div class="ttname"><a href="structmbedtls__ctr__drbg__context.html#ab9513701b8389770eb294cbc4267ff92">mbedtls_ctr_drbg_context::aes_ctx</a></div><div class="ttdeci">mbedtls_aes_context aes_ctx</div><div class="ttdef"><b>Definition:</b> <a href="ctr__drbg_8h_source.html#l00118">ctr_drbg.h:118</a></div></div>
<div class="ttc" id="structmbedtls__ctr__drbg__context_html_abdbeba1194553f4f1a3534712dc0c9f9"><div class="ttname"><a href="structmbedtls__ctr__drbg__context.html#abdbeba1194553f4f1a3534712dc0c9f9">mbedtls_ctr_drbg_context::reseed_counter</a></div><div class="ttdeci">int reseed_counter</div><div class="ttdef"><b>Definition:</b> <a href="ctr__drbg_8h_source.html#l00109">ctr_drbg.h:109</a></div></div>
<div class="ttc" id="structmbedtls__aes__context_html"><div class="ttname"><a href="structmbedtls__aes__context.html">mbedtls_aes_context</a></div><div class="ttdoc">The AES context-type definition. </div><div class="ttdef"><b>Definition:</b> <a href="aes_8h_source.html#l00073">aes.h:73</a></div></div>
<div class="ttc" id="structmbedtls__ctr__drbg__context_html_a85ca46b24fc75d3d1c091835c8c2e0b4"><div class="ttname"><a href="structmbedtls__ctr__drbg__context.html#a85ca46b24fc75d3d1c091835c8c2e0b4">mbedtls_ctr_drbg_context::p_entropy</a></div><div class="ttdeci">void * p_entropy</div><div class="ttdef"><b>Definition:</b> <a href="ctr__drbg_8h_source.html#l00126">ctr_drbg.h:126</a></div></div>
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