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<div id="projectname">libaaruformat<span id="projectnumber">&#160;1.0</span>
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<div id="projectbrief">Aaru Data Preservation Suite - Format Library</div>
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<a href="sha1_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment"> * Public domain / MIT SHA-1 implementation for libaaruformat.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> *</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * This implementation is derived from the FIPS PUB 180-1 specification and</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> * other public domain reference implementations; released as public domain.</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * If public domain dedication is not recognized, you may use it under the</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> * MIT license terms (see header in sha1.h).</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment"> */</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include &lt;stdbool.h&gt;</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#include &lt;stdint.h&gt;</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include &quot;<a class="code" href="decls_8h.html">decls.h</a>&quot;</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include &quot;<a class="code" href="sha1_8h.html">sha1.h</a>&quot;</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#ifndef AARU_LOCAL</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"><a class="line" href="sha1_8c.html#a8a7eac34f7a0caaa0d4a57e9627ba173"> 18</a></span><span class="preprocessor">#define AARU_LOCAL static</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="comment">/* Rotate-left 32-bit */</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#if defined(_MSC_VER)</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#define ROTL32(v, n) _rotl(v, n)</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#else</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"><a class="line" href="sha1_8c.html#a453d6c05303385256d9893904b125483"> 25</a></span><span class="preprocessor">#define ROTL32(v, n) (((v) &lt;&lt; (n)) | ((v) &gt;&gt; (32 - (n))))</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="comment">/* SHA-1 logical functions */</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"><a class="line" href="sha1_8c.html#a5c482e816f35bfb6e98a35ebb98faf6f"> 29</a></span><span class="preprocessor">#define F0(b, c, d) (((b) &amp; (c)) | (~(b) &amp; (d)))</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"><a class="line" href="sha1_8c.html#a4b43e24406104c71169a8ef7548dd11c"> 30</a></span><span class="preprocessor">#define F1(b, c, d) ((b) ^ (c) ^ (d))</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"><a class="line" href="sha1_8c.html#a3758a57dd3ebe6d6d232ded594a841ab"> 31</a></span><span class="preprocessor">#define F2(b, c, d) (((b) &amp; (c)) | ((b) &amp; (d)) | ((c) &amp; (d)))</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"><a class="line" href="sha1_8c.html#a52dbd9db25b71d9031d0673b87c03912"> 32</a></span><span class="preprocessor">#define F3(b, c, d) ((b) ^ (c) ^ (d))</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="foldopen" id="foldopen00034" data-start="{" data-end="}">
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"><a class="line" href="decls_8h.html#a9bcd5c47b9b593c95be9d4f82253739a"> 34</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <span class="keywordtype">void</span> <a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="sha1_8c.html#a9bcd5c47b9b593c95be9d4f82253739a">aaruf_sha1_init</a>(<a class="code hl_struct" href="structsha1__ctx.html">sha1_ctx</a> *ctx)</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span>{</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#abbd0a5d4b60cf74186ba6f1f4a02d2f7">state</a>[0] = 0x67452301UL;</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#abbd0a5d4b60cf74186ba6f1f4a02d2f7">state</a>[1] = 0xEFCDAB89UL;</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#abbd0a5d4b60cf74186ba6f1f4a02d2f7">state</a>[2] = 0x98BADCFEUL;</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#abbd0a5d4b60cf74186ba6f1f4a02d2f7">state</a>[3] = 0x10325476UL;</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#abbd0a5d4b60cf74186ba6f1f4a02d2f7">state</a>[4] = 0xC3D2E1F0UL;</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#a240a8b9917e5b68f9708ae71fe0162e2">count</a> = 0ULL;</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> memset(ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#a7d619177109240d16be88c5b03c464ad">buffer</a>, 0, <span class="keyword">sizeof</span>(ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#a7d619177109240d16be88c5b03c464ad">buffer</a>));</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span>}</div>
</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> </div>
<div class="foldopen" id="foldopen00045" data-start="{" data-end="}">
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"><a class="line" href="sha1_8c.html#a9f22d2156dc3a85f9ccb02cfac8c523e"> 45</a></span><a class="code hl_define" href="decls_8h.html#a8a7eac34f7a0caaa0d4a57e9627ba173">AARU_LOCAL</a> <span class="keywordtype">void</span> <a class="code hl_function" href="sha1_8c.html#a9f22d2156dc3a85f9ccb02cfac8c523e">sha1_transform</a>(uint32_t state[5], <span class="keyword">const</span> uint8_t block[64])</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span>{</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> uint32_t W[80];</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> </div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="comment">/* Prepare message schedule */</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keywordflow">for</span>(<span class="keywordtype">int</span> t = 0; t &lt; 16; t++)</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> {</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> W[t] = ((uint32_t)block[t * 4] &lt;&lt; 24) | ((uint32_t)block[t * 4 + 1] &lt;&lt; 16) | ((uint32_t)block[t * 4 + 2] &lt;&lt; 8) |</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> ((uint32_t)block[t * 4 + 3]);</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> }</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keywordflow">for</span>(<span class="keywordtype">int</span> t = 16; t &lt; 80; t++) { W[t] = <a class="code hl_define" href="sha1_8c.html#a453d6c05303385256d9893904b125483">ROTL32</a>(W[t - 3] ^ W[t - 8] ^ W[t - 14] ^ W[t - 16], 1); }</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> uint32_t a = state[0];</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> uint32_t b = state[1];</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> uint32_t c = state[2];</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> uint32_t d = state[3];</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> uint32_t e = state[4];</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> </div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keywordflow">for</span>(<span class="keywordtype">int</span> t = 0; t &lt; 80; t++)</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> {</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> uint32_t temp;</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordflow">if</span>(t &lt; 20)</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> temp = <a class="code hl_define" href="sha1_8c.html#a453d6c05303385256d9893904b125483">ROTL32</a>(a, 5) + <a class="code hl_define" href="sha1_8c.html#a5c482e816f35bfb6e98a35ebb98faf6f">F0</a>(b, c, d) + e + W[t] + 0x5A827999UL;</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keywordflow">else</span> <span class="keywordflow">if</span>(t &lt; 40)</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> temp = <a class="code hl_define" href="sha1_8c.html#a453d6c05303385256d9893904b125483">ROTL32</a>(a, 5) + <a class="code hl_define" href="sha1_8c.html#a4b43e24406104c71169a8ef7548dd11c">F1</a>(b, c, d) + e + W[t] + 0x6ED9EBA1UL;</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keywordflow">else</span> <span class="keywordflow">if</span>(t &lt; 60)</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> temp = <a class="code hl_define" href="sha1_8c.html#a453d6c05303385256d9893904b125483">ROTL32</a>(a, 5) + <a class="code hl_define" href="sha1_8c.html#a3758a57dd3ebe6d6d232ded594a841ab">F2</a>(b, c, d) + e + W[t] + 0x8F1BBCDCUL;</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> temp = <a class="code hl_define" href="sha1_8c.html#a453d6c05303385256d9893904b125483">ROTL32</a>(a, 5) + <a class="code hl_define" href="sha1_8c.html#a52dbd9db25b71d9031d0673b87c03912">F3</a>(b, c, d) + e + W[t] + 0xCA62C1D6UL;</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> e = d;</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> d = c;</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> c = <a class="code hl_define" href="sha1_8c.html#a453d6c05303385256d9893904b125483">ROTL32</a>(b, 30);</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> b = a;</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> a = temp;</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> }</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> state[0] += a;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> state[1] += b;</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> state[2] += c;</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> state[3] += d;</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> state[4] += e;</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span>}</div>
</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="foldopen" id="foldopen00089" data-start="{" data-end="}">
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"><a class="line" href="decls_8h.html#abead53c8e55f1f99900fdae16d9da70f"> 89</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <span class="keywordtype">void</span> <a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="sha1_8c.html#a526b4ec44347987756b9358f5fc07342">aaruf_sha1_update</a>(<a class="code hl_struct" href="structsha1__ctx.html">sha1_ctx</a> *ctx, <span class="keyword">const</span> <span class="keywordtype">void</span> *data_ptr, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> len)</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span>{</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keyword">const</span> uint8_t *data = (<span class="keyword">const</span> uint8_t *)data_ptr;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keywordflow">if</span>(len == 0) <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> </div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="comment">/* Number of bytes mod 64 currently in buffer */</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> uint32_t buffer_bytes = (uint32_t)((ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#a240a8b9917e5b68f9708ae71fe0162e2">count</a> &gt;&gt; 3) &amp; 0x3F);</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> </div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="comment">/* Update bit count */</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#a240a8b9917e5b68f9708ae71fe0162e2">count</a> += (uint64_t)len &lt;&lt; 3;</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> uint32_t free_bytes = 64 - buffer_bytes;</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keywordflow">if</span>(len &gt;= free_bytes)</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> {</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="comment">/* Fill buffer and compress */</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> memcpy(ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#a7d619177109240d16be88c5b03c464ad">buffer</a> + buffer_bytes, data, free_bytes);</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <a class="code hl_function" href="sha1_8c.html#a9f22d2156dc3a85f9ccb02cfac8c523e">sha1_transform</a>(ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#abbd0a5d4b60cf74186ba6f1f4a02d2f7">state</a>, ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#a7d619177109240d16be88c5b03c464ad">buffer</a>);</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> data += free_bytes;</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> len -= free_bytes;</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> </div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="comment">/* Process direct blocks */</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keywordflow">while</span>(len &gt;= 64)</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> {</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> <a class="code hl_function" href="sha1_8c.html#a9f22d2156dc3a85f9ccb02cfac8c523e">sha1_transform</a>(ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#abbd0a5d4b60cf74186ba6f1f4a02d2f7">state</a>, data);</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> data += 64;</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> len -= 64;</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> }</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> buffer_bytes = 0;</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> }</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> </div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="comment">/* Buffer the remaining */</span></div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keywordflow">if</span>(len &gt; 0) memcpy(ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#a7d619177109240d16be88c5b03c464ad">buffer</a> + buffer_bytes, data, len);</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span>}</div>
</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> </div>
<div class="foldopen" id="foldopen00124" data-start="{" data-end="}">
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"><a class="line" href="decls_8h.html#a0396232d1020b16b2cb4bf0b1aa2b021"> 124</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <span class="keywordtype">void</span> <a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="sha1_8c.html#a805872a1a6e7caef98a28e250a0ddc8b">aaruf_sha1_final</a>(<a class="code hl_struct" href="structsha1__ctx.html">sha1_ctx</a> *ctx, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *digest)</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span>{</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> uint8_t pad[64];</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> memset(pad, 0, <span class="keyword">sizeof</span>(pad));</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> pad[0] = 0x80;</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> </div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> uint8_t length_be[8];</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> uint64_t bits = ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#a240a8b9917e5b68f9708ae71fe0162e2">count</a>;</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i &lt; 8; i++) { length_be[7 - i] = (uint8_t)(bits &gt;&gt; (i * 8)); }</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> </div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <span class="comment">/* Current bytes mod 64 */</span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> uint32_t buffer_bytes = (uint32_t)((ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#a240a8b9917e5b68f9708ae71fe0162e2">count</a> &gt;&gt; 3) &amp; 0x3F);</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> </div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> uint32_t pad_len = (buffer_bytes &lt; 56) ? (56 - buffer_bytes) : (120 - buffer_bytes);</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> </div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <a class="code hl_function" href="sha1_8c.html#a526b4ec44347987756b9358f5fc07342">aaruf_sha1_update</a>(ctx, pad, pad_len);</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <a class="code hl_function" href="sha1_8c.html#a526b4ec44347987756b9358f5fc07342">aaruf_sha1_update</a>(ctx, length_be, 8);</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> </div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> <span class="comment">/* Output digest big-endian */</span></div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i &lt; 5; i++)</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> {</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> digest[i * 4] = (uint8_t)(ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#abbd0a5d4b60cf74186ba6f1f4a02d2f7">state</a>[i] &gt;&gt; 24);</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> digest[i * 4 + 1] = (uint8_t)(ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#abbd0a5d4b60cf74186ba6f1f4a02d2f7">state</a>[i] &gt;&gt; 16);</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> digest[i * 4 + 2] = (uint8_t)(ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#abbd0a5d4b60cf74186ba6f1f4a02d2f7">state</a>[i] &gt;&gt; 8);</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> digest[i * 4 + 3] = (uint8_t)(ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#abbd0a5d4b60cf74186ba6f1f4a02d2f7">state</a>[i]);</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> }</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> </div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> <span class="comment">/* Wipe context (except state in case reused) */</span></div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> memset(ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#a7d619177109240d16be88c5b03c464ad">buffer</a>, 0, <span class="keyword">sizeof</span>(ctx-&gt;<a class="code hl_variable" href="structsha1__ctx.html#a7d619177109240d16be88c5b03c464ad">buffer</a>));</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span>}</div>
</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="foldopen" id="foldopen00155" data-start="{" data-end="}">
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"><a class="line" href="decls_8h.html#a1e8667b4e2bc168a5411d9671a44a73c"> 155</a></span><a class="code hl_define" href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a> <span class="keywordtype">void</span> <a class="code hl_define" href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a> <a class="code hl_function" href="sha1_8c.html#a1e8667b4e2bc168a5411d9671a44a73c">aaruf_sha1_buffer</a>(<span class="keyword">const</span> <span class="keywordtype">void</span> *data, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> size, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *result)</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span>{</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <a class="code hl_struct" href="structsha1__ctx.html">sha1_ctx</a> ctx;</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> <a class="code hl_function" href="sha1_8c.html#a9bcd5c47b9b593c95be9d4f82253739a">aaruf_sha1_init</a>(&amp;ctx);</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <a class="code hl_function" href="sha1_8c.html#a526b4ec44347987756b9358f5fc07342">aaruf_sha1_update</a>(&amp;ctx, data, size);</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <a class="code hl_function" href="sha1_8c.html#a805872a1a6e7caef98a28e250a0ddc8b">aaruf_sha1_final</a>(&amp;ctx, result);</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span>}</div>
</div>
<div class="ttc" id="adecls_8h_html"><div class="ttname"><a href="decls_8h.html">decls.h</a></div></div>
<div class="ttc" id="adecls_8h_html_a018e0da1c1f7e4f6187a982c0e40e056"><div class="ttname"><a href="decls_8h.html#a018e0da1c1f7e4f6187a982c0e40e056">AARU_CALL</a></div><div class="ttdeci">#define AARU_CALL</div><div class="ttdef"><b>Definition</b> <a href="decls_8h_source.html#l00045">decls.h:45</a></div></div>
<div class="ttc" id="adecls_8h_html_a8a7eac34f7a0caaa0d4a57e9627ba173"><div class="ttname"><a href="decls_8h.html#a8a7eac34f7a0caaa0d4a57e9627ba173">AARU_LOCAL</a></div><div class="ttdeci">#define AARU_LOCAL</div><div class="ttdef"><b>Definition</b> <a href="decls_8h_source.html#l00055">decls.h:55</a></div></div>
<div class="ttc" id="adecls_8h_html_a9001412c35f3c92d3a9320d27b0d97f9"><div class="ttname"><a href="decls_8h.html#a9001412c35f3c92d3a9320d27b0d97f9">AARU_EXPORT</a></div><div class="ttdeci">#define AARU_EXPORT</div><div class="ttdef"><b>Definition</b> <a href="decls_8h_source.html#l00054">decls.h:54</a></div></div>
<div class="ttc" id="asha1_8c_html_a1e8667b4e2bc168a5411d9671a44a73c"><div class="ttname"><a href="sha1_8c.html#a1e8667b4e2bc168a5411d9671a44a73c">aaruf_sha1_buffer</a></div><div class="ttdeci">void aaruf_sha1_buffer(const void *data, unsigned long size, unsigned char *result)</div><div class="ttdef"><b>Definition</b> <a href="#l00155">sha1.c:155</a></div></div>
<div class="ttc" id="asha1_8c_html_a3758a57dd3ebe6d6d232ded594a841ab"><div class="ttname"><a href="sha1_8c.html#a3758a57dd3ebe6d6d232ded594a841ab">F2</a></div><div class="ttdeci">#define F2(b, c, d)</div><div class="ttdef"><b>Definition</b> <a href="#l00031">sha1.c:31</a></div></div>
<div class="ttc" id="asha1_8c_html_a453d6c05303385256d9893904b125483"><div class="ttname"><a href="sha1_8c.html#a453d6c05303385256d9893904b125483">ROTL32</a></div><div class="ttdeci">#define ROTL32(v, n)</div><div class="ttdef"><b>Definition</b> <a href="#l00025">sha1.c:25</a></div></div>
<div class="ttc" id="asha1_8c_html_a4b43e24406104c71169a8ef7548dd11c"><div class="ttname"><a href="sha1_8c.html#a4b43e24406104c71169a8ef7548dd11c">F1</a></div><div class="ttdeci">#define F1(b, c, d)</div><div class="ttdef"><b>Definition</b> <a href="#l00030">sha1.c:30</a></div></div>
<div class="ttc" id="asha1_8c_html_a526b4ec44347987756b9358f5fc07342"><div class="ttname"><a href="sha1_8c.html#a526b4ec44347987756b9358f5fc07342">aaruf_sha1_update</a></div><div class="ttdeci">void aaruf_sha1_update(sha1_ctx *ctx, const void *data_ptr, unsigned long len)</div><div class="ttdef"><b>Definition</b> <a href="#l00089">sha1.c:89</a></div></div>
<div class="ttc" id="asha1_8c_html_a52dbd9db25b71d9031d0673b87c03912"><div class="ttname"><a href="sha1_8c.html#a52dbd9db25b71d9031d0673b87c03912">F3</a></div><div class="ttdeci">#define F3(b, c, d)</div><div class="ttdef"><b>Definition</b> <a href="#l00032">sha1.c:32</a></div></div>
<div class="ttc" id="asha1_8c_html_a5c482e816f35bfb6e98a35ebb98faf6f"><div class="ttname"><a href="sha1_8c.html#a5c482e816f35bfb6e98a35ebb98faf6f">F0</a></div><div class="ttdeci">#define F0(b, c, d)</div><div class="ttdef"><b>Definition</b> <a href="#l00029">sha1.c:29</a></div></div>
<div class="ttc" id="asha1_8c_html_a805872a1a6e7caef98a28e250a0ddc8b"><div class="ttname"><a href="sha1_8c.html#a805872a1a6e7caef98a28e250a0ddc8b">aaruf_sha1_final</a></div><div class="ttdeci">void aaruf_sha1_final(sha1_ctx *ctx, unsigned char *digest)</div><div class="ttdef"><b>Definition</b> <a href="#l00124">sha1.c:124</a></div></div>
<div class="ttc" id="asha1_8c_html_a9bcd5c47b9b593c95be9d4f82253739a"><div class="ttname"><a href="sha1_8c.html#a9bcd5c47b9b593c95be9d4f82253739a">aaruf_sha1_init</a></div><div class="ttdeci">void aaruf_sha1_init(sha1_ctx *ctx)</div><div class="ttdef"><b>Definition</b> <a href="#l00034">sha1.c:34</a></div></div>
<div class="ttc" id="asha1_8c_html_a9f22d2156dc3a85f9ccb02cfac8c523e"><div class="ttname"><a href="sha1_8c.html#a9f22d2156dc3a85f9ccb02cfac8c523e">sha1_transform</a></div><div class="ttdeci">static void sha1_transform(uint32_t state[5], const uint8_t block[64])</div><div class="ttdef"><b>Definition</b> <a href="#l00045">sha1.c:45</a></div></div>
<div class="ttc" id="asha1_8h_html"><div class="ttname"><a href="sha1_8h.html">sha1.h</a></div></div>
<div class="ttc" id="astructsha1__ctx_html"><div class="ttname"><a href="structsha1__ctx.html">sha1_ctx</a></div><div class="ttdef"><b>Definition</b> <a href="sha1_8h_source.html#l00042">sha1.h:43</a></div></div>
<div class="ttc" id="astructsha1__ctx_html_a240a8b9917e5b68f9708ae71fe0162e2"><div class="ttname"><a href="structsha1__ctx.html#a240a8b9917e5b68f9708ae71fe0162e2">sha1_ctx::count</a></div><div class="ttdeci">uint64_t count</div><div class="ttdef"><b>Definition</b> <a href="sha1_8h_source.html#l00045">sha1.h:45</a></div></div>
<div class="ttc" id="astructsha1__ctx_html_a7d619177109240d16be88c5b03c464ad"><div class="ttname"><a href="structsha1__ctx.html#a7d619177109240d16be88c5b03c464ad">sha1_ctx::buffer</a></div><div class="ttdeci">uint8_t buffer[64]</div><div class="ttdef"><b>Definition</b> <a href="sha1_8h_source.html#l00046">sha1.h:46</a></div></div>
<div class="ttc" id="astructsha1__ctx_html_abbd0a5d4b60cf74186ba6f1f4a02d2f7"><div class="ttname"><a href="structsha1__ctx.html#abbd0a5d4b60cf74186ba6f1f4a02d2f7">sha1_ctx::state</a></div><div class="ttdeci">uint32_t state[5]</div><div class="ttdef"><b>Definition</b> <a href="sha1_8h_source.html#l00044">sha1.h:44</a></div></div>
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