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<div class="title">aes_encryptor.h</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">// Copyright 2014 Google Inc. All rights reserved.</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Use of this source code is governed by a BSD-style</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// license that can be found in the LICENSE file or at</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// AES Encryptor implementation using openssl.</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#ifndef MEDIA_BASE_AES_ENCRYPTOR_H_</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor"></span><span class="preprocessor">#define MEDIA_BASE_AES_ENCRYPTOR_H_</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <string></span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <vector></span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "packager/base/memory/scoped_ptr.h"</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "packager/base/stl_util.h"</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">struct </span>aes_key_st;</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">typedef</span> <span class="keyword">struct </span>aes_key_st AES_KEY;</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">namespace </span>edash_packager {</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// Class which implements AES-CTR counter-mode encryption/decryption.</span></div>
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<div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html"> 25</a></span> <span class="keyword">class </span><a class="code" href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html">AesCtrEncryptor</a> {</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <a class="code" href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html">AesCtrEncryptor</a>();</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  ~<a class="code" href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html">AesCtrEncryptor</a>();</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordtype">bool</span> <a class="code" href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html#a3d1c0717e1310823bd6827299b6050ef">InitializeWithRandomIv</a>(<span class="keyword">const</span> std::vector<uint8_t>& key, uint8_t iv_size);</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordtype">bool</span> <a class="code" href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html#a7e755a2bc06f35c8b3de9a7ab8b538cd">InitializeWithIv</a>(<span class="keyword">const</span> std::vector<uint8_t>& key,</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">const</span> std::vector<uint8_t>& iv);</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">bool</span> Encrypt(<span class="keyword">const</span> uint8_t* plaintext,</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">size_t</span> plaintext_size,</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  uint8_t* ciphertext);</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>  <span class="keywordtype">bool</span> Encrypt(<span class="keyword">const</span> std::vector<uint8_t>& plaintext,</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  std::vector<uint8_t>* ciphertext) {</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  ciphertext->resize(plaintext.size());</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span> Encrypt(&plaintext[0], plaintext.size(), &(*ciphertext)[0]);</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  }</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordtype">bool</span> Encrypt(<span class="keyword">const</span> std::string& plaintext, std::string* ciphertext) {</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  ciphertext->resize(plaintext.size());</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> Encrypt(reinterpret_cast<const uint8_t*>(plaintext.data()),</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  plaintext.size(),</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">reinterpret_cast<</span>uint8_t*<span class="keyword">></span>(string_as_array(ciphertext)));</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="l00065"></a><span class="lineno"> 65</span> </div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// For AES CTR, encryption and decryption are identical.</span></div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">bool</span> Decrypt(<span class="keyword">const</span> uint8_t* ciphertext,</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">size_t</span> ciphertext_size,</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  uint8_t* plaintext) {</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> Encrypt(ciphertext, ciphertext_size, plaintext);</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  }</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordtype">bool</span> Decrypt(<span class="keyword">const</span> std::vector<uint8_t>& ciphertext,</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  std::vector<uint8_t>* plaintext) {</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">return</span> Encrypt(ciphertext, plaintext);</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordtype">bool</span> Decrypt(<span class="keyword">const</span> std::string& ciphertext, std::string* plaintext) {</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">return</span> Encrypt(ciphertext, plaintext);</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordtype">void</span> <a class="code" href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html#a8310ce3e9ef83a899173bbd1e6ac5583">UpdateIv</a>();</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordtype">bool</span> <a class="code" href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html#a9c68238a73c834fd795d3e4d5e8cfd10">SetIv</a>(<span class="keyword">const</span> std::vector<uint8_t>& iv);</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">const</span> std::vector<uint8_t>& iv()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> iv_; }</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  uint32_t block_offset()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> block_offset_; }</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// Initialization vector, with size 8 or 16.</span></div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  std::vector<uint8_t> iv_;</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// Current block offset.</span></div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  uint32_t block_offset_;</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// Openssl AES_KEY.</span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  scoped_ptr<AES_KEY> aes_key_;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// Current AES-CTR counter.</span></div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  std::vector<uint8_t> counter_;</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="comment">// Encrypted counter.</span></div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  std::vector<uint8_t> encrypted_counter_;</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// Keep track of whether the counter has overflowed.</span></div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordtype">bool</span> counter_overflow_;</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html">AesCtrEncryptor</a>);</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> };</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment">// Class which implements AES-CBC (Cipher block chaining) encryption with</span></div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment">// PKCS#5 padding.</span></div>
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<div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="../../d6/dc4/classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor.html"> 115</a></span> <span class="keyword">class </span><a class="code" href="../../d6/dc4/classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor.html">AesCbcPkcs5Encryptor</a> {</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <a class="code" href="../../d6/dc4/classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor.html">AesCbcPkcs5Encryptor</a>();</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  ~<a class="code" href="../../d6/dc4/classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor.html">AesCbcPkcs5Encryptor</a>();</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordtype">bool</span> <a class="code" href="../../d6/dc4/classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor.html#a6a960fa0d83359156cfd6e10167a69e2">InitializeWithIv</a>(<span class="keyword">const</span> std::vector<uint8_t>& key,</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">const</span> std::vector<uint8_t>& iv);</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordtype">void</span> <a class="code" href="../../d6/dc4/classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor.html#aa9e31be1aef797b9c06e5f3beb524dc8">Encrypt</a>(<span class="keyword">const</span> std::string& plaintext, std::string* ciphertext);</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordtype">bool</span> <a class="code" href="../../d6/dc4/classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor.html#aca87525a4f8b27efc3e6eefcbe26f55f">SetIv</a>(<span class="keyword">const</span> std::vector<uint8_t>& iv);</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">const</span> std::vector<uint8_t>& iv()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> iv_; }</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  std::vector<uint8_t> iv_;</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  scoped_ptr<AES_KEY> encrypt_key_;</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="../../d6/dc4/classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor.html">AesCbcPkcs5Encryptor</a>);</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> };</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment">// Class which implements AES-CBC (Cipher block chaining) decryption with</span></div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment">// PKCS#5 padding.</span></div>
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<div class="line"><a name="l00146"></a><span class="lineno"><a class="line" href="../../db/dfe/classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor.html"> 146</a></span> <span class="keyword">class </span><a class="code" href="../../db/dfe/classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor.html">AesCbcPkcs5Decryptor</a> {</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <a class="code" href="../../db/dfe/classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor.html">AesCbcPkcs5Decryptor</a>();</div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  ~<a class="code" href="../../db/dfe/classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor.html">AesCbcPkcs5Decryptor</a>();</div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordtype">bool</span> <a class="code" href="../../db/dfe/classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor.html#aaa17492b546264e815971e9f6925a460">InitializeWithIv</a>(<span class="keyword">const</span> std::vector<uint8_t>& key,</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">const</span> std::vector<uint8_t>& iv);</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordtype">bool</span> <a class="code" href="../../db/dfe/classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor.html#a99992a6413029b81074735a74ce392e3">Decrypt</a>(<span class="keyword">const</span> std::string& ciphertext, std::string* plaintext);</div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordtype">bool</span> <a class="code" href="../../db/dfe/classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor.html#a0944b9d110e89fa9d63b03060059954e">SetIv</a>(<span class="keyword">const</span> std::vector<uint8_t>& iv);</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">const</span> std::vector<uint8_t>& iv()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> iv_; }</div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  std::vector<uint8_t> iv_;</div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  scoped_ptr<AES_KEY> decrypt_key_;</div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="../../db/dfe/classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor.html">AesCbcPkcs5Decryptor</a>);</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> };</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment">// Class which implements AES-CBC (Cipher block chaining) encryption with</span></div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment">// Ciphertext stealing.</span></div>
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<div class="line"><a name="l00178"></a><span class="lineno"><a class="line" href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html"> 178</a></span> <span class="keyword">class </span><a class="code" href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html">AesCbcCtsEncryptor</a> {</div>
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <a class="code" href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html">AesCbcCtsEncryptor</a>();</div>
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<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  ~<a class="code" href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html">AesCbcCtsEncryptor</a>();</div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> </div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordtype">bool</span> <a class="code" href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html#a5f48de14959ae35fdd9e2e95ab0274b4">InitializeWithIv</a>(<span class="keyword">const</span> std::vector<uint8_t>& key,</div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keyword">const</span> std::vector<uint8_t>& iv);</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="l00196"></a><span class="lineno"> 196</span>  <span class="keywordtype">void</span> <a class="code" href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html#a8bc803d458d2443cb59d20b6d14c3c30">Encrypt</a>(<span class="keyword">const</span> uint8_t* plaintext, <span class="keywordtype">size_t</span> size, uint8_t* ciphertext);</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="l00201"></a><span class="lineno"> 201</span>  <span class="keywordtype">void</span> <a class="code" href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html#a8bc803d458d2443cb59d20b6d14c3c30">Encrypt</a>(<span class="keyword">const</span> std::vector<uint8_t>& plaintext,</div>
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  std::vector<uint8_t>* ciphertext);</div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordtype">bool</span> <a class="code" href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html#a797a78aad46c2b148398c6d15f2b39e3">SetIv</a>(<span class="keyword">const</span> std::vector<uint8_t>& iv);</div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keyword">const</span> std::vector<uint8_t>& iv()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> iv_; }</div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> </div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  std::vector<uint8_t> iv_;</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  scoped_ptr<AES_KEY> encrypt_key_;</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html">AesCbcCtsEncryptor</a>);</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"> 216</span> </div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="comment">// Class which implements AES-CBC (Cipher block chaining) decryption with</span></div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> <span class="comment">// Ciphertext stealing.</span></div>
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<div class="line"><a name="l00219"></a><span class="lineno"><a class="line" href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html"> 219</a></span> <span class="keyword">class </span><a class="code" href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html">AesCbcCtsDecryptor</a> {</div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <a class="code" href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html">AesCbcCtsDecryptor</a>();</div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  ~<a class="code" href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html">AesCbcCtsDecryptor</a>();</div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordtype">bool</span> <a class="code" href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html#a4ae122dc7410cccec81eabbffa7601da">InitializeWithIv</a>(<span class="keyword">const</span> std::vector<uint8_t>& key,</div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keyword">const</span> std::vector<uint8_t>& iv);</div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> </div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordtype">void</span> <a class="code" href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html#ab4401816a4dbae48500ce4e8f011c511">Decrypt</a>(<span class="keyword">const</span> uint8_t* ciphertext, <span class="keywordtype">size_t</span> size, uint8_t* plaintext);</div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordtype">void</span> <a class="code" href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html#ab4401816a4dbae48500ce4e8f011c511">Decrypt</a>(<span class="keyword">const</span> std::vector<uint8_t>& ciphertext,</div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  std::vector<uint8_t>* plaintext);</div>
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> </div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordtype">bool</span> <a class="code" href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html#abcb9af2123d5ae47b2c89cf3feb67e06">SetIv</a>(<span class="keyword">const</span> std::vector<uint8_t>& iv);</div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> </div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keyword">const</span> std::vector<uint8_t>& iv()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> iv_; }</div>
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> </div>
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  std::vector<uint8_t> iv_;</div>
|
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  scoped_ptr<AES_KEY> decrypt_key_;</div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html">AesCbcCtsDecryptor</a>);</div>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> };</div>
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> </div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> } <span class="comment">// namespace edash_packager</span></div>
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<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="preprocessor">#endif // MEDIA_BASE_AES_ENCRYPTOR_H_</span></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcCtsEncryptor_html_a8bc803d458d2443cb59d20b6d14c3c30"><div class="ttname"><a href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html#a8bc803d458d2443cb59d20b6d14c3c30">edash_packager::media::AesCbcCtsEncryptor::Encrypt</a></div><div class="ttdeci">void Encrypt(const uint8_t *plaintext, size_t size, uint8_t *ciphertext)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00279">aes_encryptor.cc:279</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor_html_a0944b9d110e89fa9d63b03060059954e"><div class="ttname"><a href="../../db/dfe/classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor.html#a0944b9d110e89fa9d63b03060059954e">edash_packager::media::AesCbcPkcs5Decryptor::SetIv</a></div><div class="ttdeci">bool SetIv(const std::vector< uint8_t > &iv)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00248">aes_encryptor.cc:248</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor_html_aaa17492b546264e815971e9f6925a460"><div class="ttname"><a href="../../db/dfe/classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor.html#aaa17492b546264e815971e9f6925a460">edash_packager::media::AesCbcPkcs5Decryptor::InitializeWithIv</a></div><div class="ttdeci">bool InitializeWithIv(const std::vector< uint8_t > &key, const std::vector< uint8_t > &iv)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00200">aes_encryptor.cc:200</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcCtsDecryptor_html_ab4401816a4dbae48500ce4e8f011c511"><div class="ttname"><a href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html#ab4401816a4dbae48500ce4e8f011c511">edash_packager::media::AesCbcCtsDecryptor::Decrypt</a></div><div class="ttdeci">void Decrypt(const uint8_t *ciphertext, size_t size, uint8_t *plaintext)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00374">aes_encryptor.cc:374</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor_html_aca87525a4f8b27efc3e6eefcbe26f55f"><div class="ttname"><a href="../../d6/dc4/classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor.html#aca87525a4f8b27efc3e6eefcbe26f55f">edash_packager::media::AesCbcPkcs5Encryptor::SetIv</a></div><div class="ttdeci">bool SetIv(const std::vector< uint8_t > &iv)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00187">aes_encryptor.cc:187</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcCtsDecryptor_html_abcb9af2123d5ae47b2c89cf3feb67e06"><div class="ttname"><a href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html#abcb9af2123d5ae47b2c89cf3feb67e06">edash_packager::media::AesCbcCtsDecryptor::SetIv</a></div><div class="ttdeci">bool SetIv(const std::vector< uint8_t > &iv)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00467">aes_encryptor.cc:467</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcCtsEncryptor_html_a797a78aad46c2b148398c6d15f2b39e3"><div class="ttname"><a href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html#a797a78aad46c2b148398c6d15f2b39e3">edash_packager::media::AesCbcCtsEncryptor::SetIv</a></div><div class="ttdeci">bool SetIv(const std::vector< uint8_t > &iv)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00343">aes_encryptor.cc:343</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcCtsDecryptor_html"><div class="ttname"><a href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html">edash_packager::media::AesCbcCtsDecryptor</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df0/aes__encryptor_8h_source.html#l00219">aes_encryptor.h:219</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCtrEncryptor_html_a8310ce3e9ef83a899173bbd1e6ac5583"><div class="ttname"><a href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html#a8310ce3e9ef83a899173bbd1e6ac5583">edash_packager::media::AesCtrEncryptor::UpdateIv</a></div><div class="ttdeci">void UpdateIv()</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00104">aes_encryptor.cc:104</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCtrEncryptor_html_a9c68238a73c834fd795d3e4d5e8cfd10"><div class="ttname"><a href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html#a9c68238a73c834fd795d3e4d5e8cfd10">edash_packager::media::AesCtrEncryptor::SetIv</a></div><div class="ttdeci">bool SetIv(const std::vector< uint8_t > &iv)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00133">aes_encryptor.cc:133</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCtrEncryptor_html_a7e755a2bc06f35c8b3de9a7ab8b538cd"><div class="ttname"><a href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html#a7e755a2bc06f35c8b3de9a7ab8b538cd">edash_packager::media::AesCtrEncryptor::InitializeWithIv</a></div><div class="ttdeci">bool InitializeWithIv(const std::vector< uint8_t > &key, const std::vector< uint8_t > &iv)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00064">aes_encryptor.cc:64</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor_html_a99992a6413029b81074735a74ce392e3"><div class="ttname"><a href="../../db/dfe/classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor.html#a99992a6413029b81074735a74ce392e3">edash_packager::media::AesCbcPkcs5Decryptor::Decrypt</a></div><div class="ttdeci">bool Decrypt(const std::string &ciphertext, std::string *plaintext)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00218">aes_encryptor.cc:218</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCtrEncryptor_html"><div class="ttname"><a href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html">edash_packager::media::AesCtrEncryptor</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df0/aes__encryptor_8h_source.html#l00025">aes_encryptor.h:25</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor_html_aa9e31be1aef797b9c06e5f3beb524dc8"><div class="ttname"><a href="../../d6/dc4/classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor.html#aa9e31be1aef797b9c06e5f3beb524dc8">edash_packager::media::AesCbcPkcs5Encryptor::Encrypt</a></div><div class="ttdeci">void Encrypt(const std::string &plaintext, std::string *ciphertext)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00166">aes_encryptor.cc:166</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor_html_a6a960fa0d83359156cfd6e10167a69e2"><div class="ttname"><a href="../../d6/dc4/classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor.html#a6a960fa0d83359156cfd6e10167a69e2">edash_packager::media::AesCbcPkcs5Encryptor::InitializeWithIv</a></div><div class="ttdeci">bool InitializeWithIv(const std::vector< uint8_t > &key, const std::vector< uint8_t > &iv)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00148">aes_encryptor.cc:148</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCtrEncryptor_html_a3d1c0717e1310823bd6827299b6050ef"><div class="ttname"><a href="../../dd/d79/classedash__packager_1_1media_1_1AesCtrEncryptor.html#a3d1c0717e1310823bd6827299b6050ef">edash_packager::media::AesCtrEncryptor::InitializeWithRandomIv</a></div><div class="ttdeci">bool InitializeWithRandomIv(const std::vector< uint8_t > &key, uint8_t iv_size)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00053">aes_encryptor.cc:53</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcCtsEncryptor_html_a5f48de14959ae35fdd9e2e95ab0274b4"><div class="ttname"><a href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html#a5f48de14959ae35fdd9e2e95ab0274b4">edash_packager::media::AesCbcCtsEncryptor::InitializeWithIv</a></div><div class="ttdeci">bool InitializeWithIv(const std::vector< uint8_t > &key, const std::vector< uint8_t > &iv)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00261">aes_encryptor.cc:261</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcCtsDecryptor_html_a4ae122dc7410cccec81eabbffa7601da"><div class="ttname"><a href="../../dd/d96/classedash__packager_1_1media_1_1AesCbcCtsDecryptor.html#a4ae122dc7410cccec81eabbffa7601da">edash_packager::media::AesCbcCtsDecryptor::InitializeWithIv</a></div><div class="ttdeci">bool InitializeWithIv(const std::vector< uint8_t > &key, const std::vector< uint8_t > &iv)</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/da4/aes__encryptor_8cc_source.html#l00356">aes_encryptor.cc:356</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor_html"><div class="ttname"><a href="../../db/dfe/classedash__packager_1_1media_1_1AesCbcPkcs5Decryptor.html">edash_packager::media::AesCbcPkcs5Decryptor</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df0/aes__encryptor_8h_source.html#l00146">aes_encryptor.h:146</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor_html"><div class="ttname"><a href="../../d6/dc4/classedash__packager_1_1media_1_1AesCbcPkcs5Encryptor.html">edash_packager::media::AesCbcPkcs5Encryptor</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df0/aes__encryptor_8h_source.html#l00115">aes_encryptor.h:115</a></div></div>
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<div class="ttc" id="classedash__packager_1_1media_1_1AesCbcCtsEncryptor_html"><div class="ttname"><a href="../../d6/da2/classedash__packager_1_1media_1_1AesCbcCtsEncryptor.html">edash_packager::media::AesCbcCtsEncryptor</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df0/aes__encryptor_8h_source.html#l00178">aes_encryptor.h:178</a></div></div>
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