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<a href="_sha1_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> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">* Sha1.h</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">*</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">* Copyright (C) 1998</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">* Paul E. Jones <paulej@acm.org></span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">* All Rights Reserved.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">*</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">*****************************************************************************</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">* $Id: sha1.h,v 1.4 2001/03/20 06:25:06 paulej Exp $</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">*****************************************************************************</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">*</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">* Description:</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">* This class implements the Secure Hashing Standard as defined</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">* in FIPS PUB 180-1 published April 17, 1995.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">*</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">* Many of the variable names in this class, especially the single</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">* character names, were used because those were the names used</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">* in the publication.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">*</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">* Please read the file sha1.cpp for more information.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">*</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#ifndef _SHA1_H_</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor"></span><span class="preprocessor">#define _SHA1_H_</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"><a class="code" href="class_s_h_a1.html"> 27</a></span> <span class="keyword">class </span><a class="code" href="class_s_h_a1.html">SHA1</a></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> {</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <a class="code" href="class_s_h_a1.html#ad49a5108ffd6996b1133bf41224ff726">SHA1</a>();</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">virtual</span> <a class="code" href="class_s_h_a1.html#a8485d7c14fa29286cd3c7acfe438606d">~SHA1</a>();</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * Re-initialize the class</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordtype">void</span> <a class="code" href="class_s_h_a1.html#accec3092d91c84d7e71d32c681357119">Reset</a>();</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * Returns the message digest</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordtype">bool</span> <a class="code" href="class_s_h_a1.html#ab374ecf64d54cc133805322370f3b0f1">Result</a>(<span class="keywordtype">unsigned</span> *message_digest_array);</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * Provide input to SHA1</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">void</span> <a class="code" href="class_s_h_a1.html#a5612d5feb8202a4930aa271df8cbf102">Input</a>( <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *message_array,</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">unsigned</span> length);</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">void</span> <a class="code" href="class_s_h_a1.html#a5612d5feb8202a4930aa271df8cbf102">Input</a>( <span class="keyword">const</span> <span class="keywordtype">char</span> *message_array,</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">unsigned</span> length);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordtype">void</span> <a class="code" href="class_s_h_a1.html#a5612d5feb8202a4930aa271df8cbf102">Input</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> message_element);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordtype">void</span> <a class="code" href="class_s_h_a1.html#a5612d5feb8202a4930aa271df8cbf102">Input</a>(<span class="keywordtype">char</span> message_element);</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="class_s_h_a1.html">SHA1</a>& <a class="code" href="class_s_h_a1.html#a5d334b9a7847596c51e671ae8fded37b">operator<<</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *message_array);</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="class_s_h_a1.html">SHA1</a>& <a class="code" href="class_s_h_a1.html#a5d334b9a7847596c51e671ae8fded37b">operator<<</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *message_array);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="class_s_h_a1.html">SHA1</a>& <a class="code" href="class_s_h_a1.html#a5d334b9a7847596c51e671ae8fded37b">operator<<</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> message_element);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <a class="code" href="class_s_h_a1.html">SHA1</a>& <a class="code" href="class_s_h_a1.html#a5d334b9a7847596c51e671ae8fded37b">operator<<</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> message_element);</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> * Process the next 512 bits of the message</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordtype">void</span> ProcessMessageBlock();</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> * Pads the current message block to 512 bits</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordtype">void</span> PadMessage();</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> * Performs a circular left shift operation</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> CircularShift(<span class="keywordtype">int</span> bits, <span class="keywordtype">unsigned</span> word);</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordtype">unsigned</span> H[5]; <span class="comment">// Message digest buffers</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordtype">unsigned</span> Length_Low; <span class="comment">// Message length in bits</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordtype">unsigned</span> Length_High; <span class="comment">// Message length in bits</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> Message_Block[64]; <span class="comment">// 512-bit message blocks</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordtype">int</span> Message_Block_Index; <span class="comment">// Index into message block array</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">bool</span> Computed; <span class="comment">// Is the digest computed?</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordtype">bool</span> Corrupted; <span class="comment">// Is the message digest corruped?</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> };</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="preprocessor">#endif</span></div>
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