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<li class="navelem"><a class="el" href="dir_74b6a3b63f61c160c0f14b7a283a4c9b.html">Firmware</a></li><li class="navelem"><a class="el" href="dir_8465ec698d237f801ae9966d4551fcfa.html">Chameleon-Mini</a></li><li class="navelem"><a class="el" href="dir_5de29d499bb29a41092979d00d22c134.html">Application</a></li> </ul>
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<div class="title">Crypto1.h</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef CRYPTO1_H</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define CRYPTO1_H</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include <stdint.h></span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include <stdbool.h></span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="keywordtype">void</span> Crypto1GetState(uint8_t* pEven, uint8_t* pOdd);</div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">/* Gets the current keystream-bit, without shifting the internal LFSR */</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> uint8_t Crypto1FilterOutput(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">/* Set up Crypto1 cipher using the given Key, Uid and CardNonce. Also encrypts</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * the CardNonce in-place while in non-linear mode. */</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="keywordtype">void</span> Crypto1Setup(uint8_t Key[6], uint8_t Uid[4], uint8_t CardNonce[4]);</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">/* Same for nested auth. CardNonce[4]..[7] will contain the parity bits after return */</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keywordtype">void</span> Crypto1SetupNested(uint8_t Key[6], uint8_t Uid[4], uint8_t CardNonce[8], <span class="keywordtype">bool</span> Decrypt);</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">/* Load the decrypted ReaderNonce into the Crypto1 state LFSR */</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keywordtype">void</span> Crypto1Auth(uint8_t EncryptedReaderNonce[4]);</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">/* Generate 8 Bits of key stream */</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> uint8_t Crypto1Byte(<span class="keywordtype">void</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="comment">/* Encrypt/Decrypt array */</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keywordtype">void</span> Crypto1ByteArray(uint8_t* Buffer, uint8_t Count);</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keywordtype">void</span> Crypto1ByteArrayWithParity(uint8_t* Buffer, uint8_t Count);</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">/* Generate 4 Bits of key stream */</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> uint8_t Crypto1Nibble(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">/* Execute 'ClockCount' cycles on the PRNG state 'State' */</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keywordtype">void</span> Crypto1PRNG(uint8_t State[4], uint8_t ClockCount);</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">/* Encrypts buffer with consideration of parity bits */</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keywordtype">void</span> Crypto1EncryptWithParity(uint8_t * Buffer, uint8_t BitCount);</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">/* Encrypts buffer with LFSR feedback within reader nonce and considers parity bits */</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keywordtype">void</span> Crypto1ReaderAuthWithParity(uint8_t PlainReaderAnswerWithParityBits[9]);</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="preprocessor">#endif //CRYPTO1_H</span></div></div><!-- fragment --></div><!-- contents -->
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