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<div class="title">AES256.cpp</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (C) 2015,2018 Southern Storm Software, Pty Ltd.</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * copy of this software and associated documentation files (the "Software"),</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * to deal in the Software without restriction, including without limitation</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * the rights to use, copy, modify, merge, publish, distribute, sublicense,</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * and/or sell copies of the Software, and to permit persons to whom the</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * Software is furnished to do so, subject to the following conditions:</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * The above copyright notice and this permission notice shall be included</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * in all copies or substantial portions of the Software.</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * DEALINGS IN THE SOFTWARE.</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "AES.h"</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "Crypto.h"</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <string.h></span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#if defined(CRYPTO_AES_DEFAULT) || defined(CRYPTO_DOC)</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="classAES256.html#a3b2cbe56f03a87ec4260be4f8914fb02"> 42</a></span> <a class="code" href="classAES256.html#a3b2cbe56f03a87ec4260be4f8914fb02">AES256::AES256</a>()</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> {</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  rounds = 14;</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  schedule = sched;</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> }</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> AES256::~AES256()</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> {</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  clean(sched);</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> }</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
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<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="classAES256.html#af8ed6412bae6fc78274f60344899366a"> 57</a></span> <span class="keywordtype">size_t</span> <a class="code" href="classAES256.html#af8ed6412bae6fc78274f60344899366a">AES256::keySize</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">return</span> 32;</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> }</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
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<div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="classAES256.html#a6af085d2d6a730ff1e025f982121bbda"> 62</a></span> <span class="keywordtype">bool</span> <a class="code" href="classAES256.html#a6af085d2d6a730ff1e025f982121bbda">AES256::setKey</a>(<span class="keyword">const</span> uint8_t *key, <span class="keywordtype">size_t</span> len)</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">if</span> (len != 32)</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// Copy the key itself into the first 32 bytes of the schedule.</span></div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  uint8_t *schedule = sched;</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  memcpy(schedule, key, 32);</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// Expand the key schedule until we have 240 bytes of expanded key.</span></div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  uint8_t iteration = 1;</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  uint8_t n = 32;</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  uint8_t w = 8;</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">while</span> (n < 240) {</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">if</span> (w == 8) {</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// Every 32 bytes (8 words) we need to apply the key schedule core.</span></div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  keyScheduleCore(schedule + 32, schedule + 28, iteration);</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  schedule[32] ^= schedule[0];</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  schedule[33] ^= schedule[1];</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  schedule[34] ^= schedule[2];</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  schedule[35] ^= schedule[3];</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  ++iteration;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  w = 0;</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (w == 4) {</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="comment">// At the 16 byte mark we need to apply the S-box.</span></div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  applySbox(schedule + 32, schedule + 28);</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  schedule[32] ^= schedule[0];</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  schedule[33] ^= schedule[1];</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  schedule[34] ^= schedule[2];</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  schedule[35] ^= schedule[3];</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// Otherwise just XOR the word with the one 32 bytes previous.</span></div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  schedule[32] = schedule[28] ^ schedule[0];</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  schedule[33] = schedule[29] ^ schedule[1];</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  schedule[34] = schedule[30] ^ schedule[2];</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  schedule[35] = schedule[31] ^ schedule[3];</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="comment">// Advance to the next word in the schedule.</span></div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  schedule += 4;</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  n += 4;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  ++w;</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  }</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> }</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment">// Helper macros.</span></div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="preprocessor">#define LEFT 0</span></div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="preprocessor"></span><span class="preprocessor">#define RIGHT 16</span></div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="preprocessor"></span><span class="preprocessor">#define ENCRYPT(phase) \</span></div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="preprocessor"> do { \</span></div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor"> AESCommon::subBytesAndShiftRows(state2, state1); \</span></div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="preprocessor"> AESCommon::mixColumn(state1, state2); \</span></div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="preprocessor"> AESCommon::mixColumn(state1 + 4, state2 + 4); \</span></div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="preprocessor"> AESCommon::mixColumn(state1 + 8, state2 + 8); \</span></div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="preprocessor"> AESCommon::mixColumn(state1 + 12, state2 + 12); \</span></div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="preprocessor"> for (posn = 0; posn < 16; ++posn) \</span></div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="preprocessor"> state1[posn] ^= schedule[posn + (phase)]; \</span></div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="preprocessor"> } while (0)</span></div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor"></span><span class="preprocessor">#define DECRYPT(phase) \</span></div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor"> do { \</span></div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="preprocessor"> for (posn = 0; posn < 16; ++posn) \</span></div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="preprocessor"> state2[posn] ^= schedule[posn + (phase)]; \</span></div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="preprocessor"> AESCommon::inverseMixColumn(state1, state2); \</span></div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="preprocessor"> AESCommon::inverseMixColumn(state1 + 4, state2 + 4); \</span></div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="preprocessor"> AESCommon::inverseMixColumn(state1 + 8, state2 + 8); \</span></div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="preprocessor"> AESCommon::inverseMixColumn(state1 + 12, state2 + 12); \</span></div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="preprocessor"> AESCommon::inverseShiftRowsAndSubBytes(state2, state1); \</span></div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="preprocessor"> } while (0)</span></div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="preprocessor"></span><span class="preprocessor">#define KCORE(n) \</span></div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="preprocessor"> do { \</span></div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="preprocessor"> AESCommon::keyScheduleCore(temp, schedule + 28, (n)); \</span></div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="preprocessor"> schedule[0] ^= temp[0]; \</span></div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="preprocessor"> schedule[1] ^= temp[1]; \</span></div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="preprocessor"> schedule[2] ^= temp[2]; \</span></div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="preprocessor"> schedule[3] ^= temp[3]; \</span></div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="preprocessor"> } while (0)</span></div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="preprocessor"></span><span class="preprocessor">#define KXOR(a, b) \</span></div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="preprocessor"> do { \</span></div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="preprocessor"> schedule[(a) * 4] ^= schedule[(b) * 4]; \</span></div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor"> schedule[(a) * 4 + 1] ^= schedule[(b) * 4 + 1]; \</span></div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="preprocessor"> schedule[(a) * 4 + 2] ^= schedule[(b) * 4 + 2]; \</span></div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="preprocessor"> schedule[(a) * 4 + 3] ^= schedule[(b) * 4 + 3]; \</span></div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="preprocessor"> } while (0)</span></div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="preprocessor"></span><span class="preprocessor">#define KSBOX() \</span></div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="preprocessor"> do { \</span></div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="preprocessor"> AESCommon::applySbox(temp, schedule + 12); \</span></div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="preprocessor"> schedule[16] ^= temp[0]; \</span></div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="preprocessor"> schedule[17] ^= temp[1]; \</span></div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="preprocessor"> schedule[18] ^= temp[2]; \</span></div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="preprocessor"> schedule[19] ^= temp[3]; \</span></div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="preprocessor"> } while (0)</span></div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00189"></a><span class="lineno"><a class="line" href="classAESTiny256.html#a7af85adfdbd0a3bb68ef5a8f76102043"> 189</a></span> <a class="code" href="classAESTiny256.html#a7af85adfdbd0a3bb68ef5a8f76102043">AESTiny256::AESTiny256</a>()</div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> {</div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> }</div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> AESTiny256::~AESTiny256()</div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> {</div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  clean(schedule);</div>
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> }</div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div>
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<div class="line"><a name="l00202"></a><span class="lineno"><a class="line" href="classAESTiny256.html#a3f48f55b7600dfc672acda899928de76"> 202</a></span> <span class="keywordtype">size_t</span> <a class="code" href="classAESTiny256.html#a3f48f55b7600dfc672acda899928de76">AESTiny256::blockSize</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">return</span> 16;</div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> }</div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> </div>
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<div class="line"><a name="l00211"></a><span class="lineno"><a class="line" href="classAESTiny256.html#a7b5a2ba4829e79283c53248d3d8a7a06"> 211</a></span> <span class="keywordtype">size_t</span> <a class="code" href="classAESTiny256.html#a7b5a2ba4829e79283c53248d3d8a7a06">AESTiny256::keySize</a>()<span class="keyword"> const</span></div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="keyword"></span>{</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">return</span> 32;</div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> }</div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> </div>
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<div class="line"><a name="l00216"></a><span class="lineno"><a class="line" href="classAESTiny256.html#abc162075b181bfca34144f4eec6deec7"> 216</a></span> <span class="keywordtype">bool</span> <a class="code" href="classAESTiny256.html#abc162075b181bfca34144f4eec6deec7">AESTiny256::setKey</a>(<span class="keyword">const</span> uint8_t *key, <span class="keywordtype">size_t</span> len)</div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> {</div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">if</span> (len == 32) {</div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="comment">// Make a copy of the key - it will be expanded in encryptBlock().</span></div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  memcpy(schedule, key, 32);</div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  }</div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> }</div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div>
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<div class="line"><a name="l00226"></a><span class="lineno"><a class="line" href="classAESTiny256.html#a36e4ffc85f7d7604d01a5629c185d0ef"> 226</a></span> <span class="keywordtype">void</span> <a class="code" href="classAESTiny256.html#a36e4ffc85f7d7604d01a5629c185d0ef">AESTiny256::encryptBlock</a>(uint8_t *output, <span class="keyword">const</span> uint8_t *input)</div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> {</div>
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<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  uint8_t schedule[32];</div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  uint8_t posn;</div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  uint8_t round;</div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  uint8_t state1[16];</div>
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  uint8_t state2[16];</div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  uint8_t temp[4];</div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> </div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="comment">// Start with the key in the schedule buffer.</span></div>
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|
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  memcpy(schedule, this->schedule, 32);</div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="comment">// Copy the input into the state and perform the first round.</span></div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">for</span> (posn = 0; posn < 16; ++posn)</div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  state1[posn] = input[posn] ^ schedule[posn];</div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  ENCRYPT(RIGHT);</div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> </div>
|
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="comment">// Perform the next 12 rounds of the cipher two at a time.</span></div>
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">for</span> (round = 1; round <= 6; ++round) {</div>
|
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="comment">// Expand the next 32 bytes of the key schedule.</span></div>
|
|
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  KCORE(round);</div>
|
|
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  KXOR(1, 0);</div>
|
|
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  KXOR(2, 1);</div>
|
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  KXOR(3, 2);</div>
|
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  KSBOX();</div>
|
|
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  KXOR(5, 4);</div>
|
|
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  KXOR(6, 5);</div>
|
|
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  KXOR(7, 6);</div>
|
|
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> </div>
|
|
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="comment">// Encrypt using the left and right halves of the key schedule.</span></div>
|
|
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  ENCRYPT(LEFT);</div>
|
|
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  ENCRYPT(RIGHT);</div>
|
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  }</div>
|
|
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> </div>
|
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="comment">// Expand the final 16 bytes of the key schedule.</span></div>
|
|
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  KCORE(7);</div>
|
|
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  KXOR(1, 0);</div>
|
|
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  KXOR(2, 1);</div>
|
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<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  KXOR(3, 2);</div>
|
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<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> </div>
|
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<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="comment">// Perform the final round.</span></div>
|
|
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  AESCommon::subBytesAndShiftRows(state2, state1);</div>
|
|
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordflow">for</span> (posn = 0; posn < 16; ++posn)</div>
|
|
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  output[posn] = state2[posn] ^ schedule[posn];</div>
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|
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> }</div>
|
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<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> </div>
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<div class="line"><a name="l00272"></a><span class="lineno"><a class="line" href="classAESTiny256.html#abdf72a52c37c060a9089693c118585bc"> 272</a></span> <span class="keywordtype">void</span> <a class="code" href="classAESTiny256.html#abdf72a52c37c060a9089693c118585bc">AESTiny256::decryptBlock</a>(uint8_t *output, <span class="keyword">const</span> uint8_t *input)</div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> {</div>
|
|
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="comment">// Decryption is not supported by AESTiny256.</span></div>
|
|
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> }</div>
|
|
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> </div>
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<div class="line"><a name="l00277"></a><span class="lineno"><a class="line" href="classAESTiny256.html#ae4cac6af2e78cbf399b7f6d0e613a578"> 277</a></span> <span class="keywordtype">void</span> <a class="code" href="classAESTiny256.html#ae4cac6af2e78cbf399b7f6d0e613a578">AESTiny256::clear</a>()</div>
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|
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> {</div>
|
|
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  clean(schedule);</div>
|
|
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> }</div>
|
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<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> </div>
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<div class="line"><a name="l00308"></a><span class="lineno"><a class="line" href="classAESSmall256.html#aa343b59af73ad6c86541907f53f5572b"> 308</a></span> <a class="code" href="classAESSmall256.html#aa343b59af73ad6c86541907f53f5572b">AESSmall256::AESSmall256</a>()</div>
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<div class="line"><a name="l00309"></a><span class="lineno"> 309</span> {</div>
|
|
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> }</div>
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<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> </div>
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<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> AESSmall256::~AESSmall256()</div>
|
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<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>  clean(reverse);</div>
|
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<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> }</div>
|
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<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> </div>
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<div class="line"><a name="l00317"></a><span class="lineno"><a class="line" href="classAESSmall256.html#ae7e05119a6183d5f7fc520206f97c0e0"> 317</a></span> <span class="keywordtype">bool</span> <a class="code" href="classAESSmall256.html#ae7e05119a6183d5f7fc520206f97c0e0">AESSmall256::setKey</a>(<span class="keyword">const</span> uint8_t *key, <span class="keywordtype">size_t</span> len)</div>
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|
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> {</div>
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|
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  uint8_t *schedule;</div>
|
|
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  uint8_t round;</div>
|
|
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  uint8_t temp[4];</div>
|
|
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span> </div>
|
|
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="comment">// Set the encryption key first.</span></div>
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|
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">if</span> (!<a class="code" href="classAESTiny256.html#abc162075b181bfca34144f4eec6deec7">AESTiny256::setKey</a>(key, len))</div>
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<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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="comment">// Expand the key schedule up to the last round which gives</span></div>
|
|
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="comment">// us the round keys to use for the final two rounds. We can</span></div>
|
|
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="comment">// then work backwards from there in decryptBlock().</span></div>
|
|
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  schedule = reverse;</div>
|
|
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  memcpy(schedule, key, 32);</div>
|
|
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordflow">for</span> (round = 1; round <= 6; ++round) {</div>
|
|
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  KCORE(round);</div>
|
|
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  KXOR(1, 0);</div>
|
|
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  KXOR(2, 1);</div>
|
|
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  KXOR(3, 2);</div>
|
|
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  KSBOX();</div>
|
|
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  KXOR(5, 4);</div>
|
|
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  KXOR(6, 5);</div>
|
|
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  KXOR(7, 6);</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>  KCORE(7);</div>
|
|
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  KXOR(1, 0);</div>
|
|
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  KXOR(2, 1);</div>
|
|
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  KXOR(3, 2);</div>
|
|
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> </div>
|
|
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="comment">// Key is ready to go.</span></div>
|
|
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
|
|
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> }</div>
|
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<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> </div>
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<div class="line"><a name="l00351"></a><span class="lineno"><a class="line" href="classAESSmall256.html#aaba6d59d07d2f40efa8c962375c15888"> 351</a></span> <span class="keywordtype">void</span> <a class="code" href="classAESSmall256.html#aaba6d59d07d2f40efa8c962375c15888">AESSmall256::decryptBlock</a>(uint8_t *output, <span class="keyword">const</span> uint8_t *input)</div>
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<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> {</div>
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<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  uint8_t schedule[32];</div>
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<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  uint8_t round;</div>
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<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  uint8_t posn;</div>
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<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  uint8_t state1[16];</div>
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<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  uint8_t state2[16];</div>
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<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  uint8_t temp[4];</div>
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<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> </div>
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<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="comment">// Start with the end of the decryption schedule.</span></div>
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<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  memcpy(schedule, reverse, 32);</div>
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<div class="line"><a name="l00362"></a><span class="lineno"> 362</span> </div>
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<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="comment">// Copy the input into the state and reverse the final round.</span></div>
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<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="keywordflow">for</span> (posn = 0; posn < 16; ++posn)</div>
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<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  state1[posn] = input[posn] ^ schedule[posn];</div>
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<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  AESCommon::inverseShiftRowsAndSubBytes(state2, state1);</div>
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<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  KXOR(3, 2);</div>
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<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  KXOR(2, 1);</div>
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<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  KXOR(1, 0);</div>
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<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  KCORE(7);</div>
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<div class="line"><a name="l00371"></a><span class="lineno"> 371</span> </div>
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<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="comment">// Perform the next 12 rounds of the decryption process two at a time.</span></div>
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<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keywordflow">for</span> (round = 6; round >= 1; --round) {</div>
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<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="comment">// Decrypt using the right and left halves of the key schedule.</span></div>
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<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  DECRYPT(RIGHT);</div>
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<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  DECRYPT(LEFT);</div>
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<div class="line"><a name="l00377"></a><span class="lineno"> 377</span> </div>
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<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="comment">// Expand the next 32 bytes of the key schedule in reverse.</span></div>
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<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  KXOR(7, 6);</div>
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<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  KXOR(6, 5);</div>
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<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  KXOR(5, 4);</div>
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<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  KSBOX();</div>
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<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  KXOR(3, 2);</div>
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<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  KXOR(2, 1);</div>
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<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  KXOR(1, 0);</div>
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<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  KCORE(round);</div>
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<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  }</div>
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<div class="line"><a name="l00388"></a><span class="lineno"> 388</span> </div>
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<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="comment">// Reverse the initial round and create the output words.</span></div>
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<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  DECRYPT(RIGHT);</div>
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<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">for</span> (posn = 0; posn < 16; ++posn)</div>
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<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  output[posn] = state2[posn] ^ schedule[posn];</div>
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<div class="line"><a name="l00393"></a><span class="lineno"> 393</span> }</div>
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<div class="line"><a name="l00394"></a><span class="lineno"> 394</span> </div>
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<div class="line"><a name="l00395"></a><span class="lineno"><a class="line" href="classAESSmall256.html#ac63bf2dff7de8a73ba57f4bb0f1df444"> 395</a></span> <span class="keywordtype">void</span> <a class="code" href="classAESSmall256.html#ac63bf2dff7de8a73ba57f4bb0f1df444">AESSmall256::clear</a>()</div>
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<div class="line"><a name="l00396"></a><span class="lineno"> 396</span> {</div>
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<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  clean(reverse);</div>
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<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <a class="code" href="classAESTiny256.html#ae4cac6af2e78cbf399b7f6d0e613a578">AESTiny256::clear</a>();</div>
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<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> }</div>
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<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> </div>
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<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> <span class="preprocessor">#endif // CRYPTO_AES_DEFAULT</span></div>
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<div class="ttc" id="classAESTiny256_html_ae4cac6af2e78cbf399b7f6d0e613a578"><div class="ttname"><a href="classAESTiny256.html#ae4cac6af2e78cbf399b7f6d0e613a578">AESTiny256::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">Clears all security-sensitive state from this block cipher. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00277">AES256.cpp:277</a></div></div>
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<div class="ttc" id="classAESTiny256_html_a7b5a2ba4829e79283c53248d3d8a7a06"><div class="ttname"><a href="classAESTiny256.html#a7b5a2ba4829e79283c53248d3d8a7a06">AESTiny256::keySize</a></div><div class="ttdeci">size_t keySize() const </div><div class="ttdoc">Size of a 256-bit AES key in bytes. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00211">AES256.cpp:211</a></div></div>
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<div class="ttc" id="classAESSmall256_html_aa343b59af73ad6c86541907f53f5572b"><div class="ttname"><a href="classAESSmall256.html#aa343b59af73ad6c86541907f53f5572b">AESSmall256::AESSmall256</a></div><div class="ttdeci">AESSmall256()</div><div class="ttdoc">Constructs an AES 256-bit block cipher with no initial key. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00308">AES256.cpp:308</a></div></div>
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<div class="ttc" id="classAESTiny256_html_abdf72a52c37c060a9089693c118585bc"><div class="ttname"><a href="classAESTiny256.html#abdf72a52c37c060a9089693c118585bc">AESTiny256::decryptBlock</a></div><div class="ttdeci">void decryptBlock(uint8_t *output, const uint8_t *input)</div><div class="ttdoc">Decrypts a single block using this cipher. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00272">AES256.cpp:272</a></div></div>
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<div class="ttc" id="classAESTiny256_html_a36e4ffc85f7d7604d01a5629c185d0ef"><div class="ttname"><a href="classAESTiny256.html#a36e4ffc85f7d7604d01a5629c185d0ef">AESTiny256::encryptBlock</a></div><div class="ttdeci">void encryptBlock(uint8_t *output, const uint8_t *input)</div><div class="ttdoc">Encrypts a single block using this cipher. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00226">AES256.cpp:226</a></div></div>
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<div class="ttc" id="classAESSmall256_html_aaba6d59d07d2f40efa8c962375c15888"><div class="ttname"><a href="classAESSmall256.html#aaba6d59d07d2f40efa8c962375c15888">AESSmall256::decryptBlock</a></div><div class="ttdeci">void decryptBlock(uint8_t *output, const uint8_t *input)</div><div class="ttdoc">Decrypts a single block using this cipher. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00351">AES256.cpp:351</a></div></div>
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<div class="ttc" id="classAES256_html_a3b2cbe56f03a87ec4260be4f8914fb02"><div class="ttname"><a href="classAES256.html#a3b2cbe56f03a87ec4260be4f8914fb02">AES256::AES256</a></div><div class="ttdeci">AES256()</div><div class="ttdoc">Constructs an AES 256-bit block cipher with no initial key. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00042">AES256.cpp:42</a></div></div>
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<div class="ttc" id="classAES256_html_a6af085d2d6a730ff1e025f982121bbda"><div class="ttname"><a href="classAES256.html#a6af085d2d6a730ff1e025f982121bbda">AES256::setKey</a></div><div class="ttdeci">bool setKey(const uint8_t *key, size_t len)</div><div class="ttdoc">Sets the key to use for future encryption and decryption operations. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00062">AES256.cpp:62</a></div></div>
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<div class="ttc" id="classAESTiny256_html_abc162075b181bfca34144f4eec6deec7"><div class="ttname"><a href="classAESTiny256.html#abc162075b181bfca34144f4eec6deec7">AESTiny256::setKey</a></div><div class="ttdeci">bool setKey(const uint8_t *key, size_t len)</div><div class="ttdoc">Sets the key to use for future encryption and decryption operations. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00216">AES256.cpp:216</a></div></div>
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<div class="ttc" id="classAESSmall256_html_ac63bf2dff7de8a73ba57f4bb0f1df444"><div class="ttname"><a href="classAESSmall256.html#ac63bf2dff7de8a73ba57f4bb0f1df444">AESSmall256::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdoc">Clears all security-sensitive state from this block cipher. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00395">AES256.cpp:395</a></div></div>
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<div class="ttc" id="classAESTiny256_html_a7af85adfdbd0a3bb68ef5a8f76102043"><div class="ttname"><a href="classAESTiny256.html#a7af85adfdbd0a3bb68ef5a8f76102043">AESTiny256::AESTiny256</a></div><div class="ttdeci">AESTiny256()</div><div class="ttdoc">Constructs an AES 256-bit block cipher with no initial key. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00189">AES256.cpp:189</a></div></div>
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<div class="ttc" id="classAES256_html_af8ed6412bae6fc78274f60344899366a"><div class="ttname"><a href="classAES256.html#af8ed6412bae6fc78274f60344899366a">AES256::keySize</a></div><div class="ttdeci">size_t keySize() const </div><div class="ttdoc">Size of a 256-bit AES key in bytes. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00057">AES256.cpp:57</a></div></div>
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<div class="ttc" id="classAESSmall256_html_ae7e05119a6183d5f7fc520206f97c0e0"><div class="ttname"><a href="classAESSmall256.html#ae7e05119a6183d5f7fc520206f97c0e0">AESSmall256::setKey</a></div><div class="ttdeci">bool setKey(const uint8_t *key, size_t len)</div><div class="ttdoc">Sets the key to use for future encryption and decryption operations. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00317">AES256.cpp:317</a></div></div>
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<div class="ttc" id="classAESTiny256_html_a3f48f55b7600dfc672acda899928de76"><div class="ttname"><a href="classAESTiny256.html#a3f48f55b7600dfc672acda899928de76">AESTiny256::blockSize</a></div><div class="ttdeci">size_t blockSize() const </div><div class="ttdoc">Size of an AES block in bytes. </div><div class="ttdef"><b>Definition:</b> <a href="AES256_8cpp_source.html#l00202">AES256.cpp:202</a></div></div>
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