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<p>XTEA block cipher (32-bit)
<a href="#details">More...</a></p>
<div class="textblock"><code>#include "<a class="el" href="config_8h_source.html">config.h</a>"</code><br />
<code>#include <stddef.h></code><br />
<code>#include <stdint.h></code><br />
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Include dependency graph for xtea.h:</div>
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Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structmbedtls__xtea__context.html">mbedtls_xtea_context</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">XTEA context structure. <a href="structmbedtls__xtea__context.html#details">More...</a><br /></td></tr>
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Macros</h2></td></tr>
<tr class="memitem:a52a8e7d7e042c6d11541312838130069"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="xtea_8h.html#a52a8e7d7e042c6d11541312838130069">MBEDTLS_XTEA_ENCRYPT</a>   1</td></tr>
<tr class="separator:a52a8e7d7e042c6d11541312838130069"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af5ddb7bfc34c65a4b48926f087ab5c26"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="xtea_8h.html#af5ddb7bfc34c65a4b48926f087ab5c26">MBEDTLS_XTEA_DECRYPT</a>   0</td></tr>
<tr class="separator:af5ddb7bfc34c65a4b48926f087ab5c26"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:addf91fc82370cb27115b725ceb261b3d"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="xtea_8h.html#addf91fc82370cb27115b725ceb261b3d">MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH</a>   -0x0028</td></tr>
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<tr class="memitem:a5e7745d85886bc0564338f562f83c059"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="xtea_8h.html#a5e7745d85886bc0564338f562f83c059">MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED</a>   -0x0029</td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ade30d4f60411e181757ffab0da902e75"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="xtea_8h.html#ade30d4f60411e181757ffab0da902e75">mbedtls_xtea_init</a> (<a class="el" href="structmbedtls__xtea__context.html">mbedtls_xtea_context</a> *ctx)</td></tr>
<tr class="memdesc:ade30d4f60411e181757ffab0da902e75"><td class="mdescLeft"> </td><td class="mdescRight">Initialize XTEA context. <a href="#ade30d4f60411e181757ffab0da902e75">More...</a><br /></td></tr>
<tr class="separator:ade30d4f60411e181757ffab0da902e75"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a55eea1f415f3ed5dbf488fa0d9fb5cab"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="xtea_8h.html#a55eea1f415f3ed5dbf488fa0d9fb5cab">mbedtls_xtea_free</a> (<a class="el" href="structmbedtls__xtea__context.html">mbedtls_xtea_context</a> *ctx)</td></tr>
<tr class="memdesc:a55eea1f415f3ed5dbf488fa0d9fb5cab"><td class="mdescLeft"> </td><td class="mdescRight">Clear XTEA context. <a href="#a55eea1f415f3ed5dbf488fa0d9fb5cab">More...</a><br /></td></tr>
<tr class="separator:a55eea1f415f3ed5dbf488fa0d9fb5cab"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3de8a424080f233f2a71c76b93bab130"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="xtea_8h.html#a3de8a424080f233f2a71c76b93bab130">mbedtls_xtea_setup</a> (<a class="el" href="structmbedtls__xtea__context.html">mbedtls_xtea_context</a> *ctx, const unsigned char key[16])</td></tr>
<tr class="memdesc:a3de8a424080f233f2a71c76b93bab130"><td class="mdescLeft"> </td><td class="mdescRight">XTEA key schedule. <a href="#a3de8a424080f233f2a71c76b93bab130">More...</a><br /></td></tr>
<tr class="separator:a3de8a424080f233f2a71c76b93bab130"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a73a0ce1ac62aa079107736ef2aa4b21d"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="xtea_8h.html#a73a0ce1ac62aa079107736ef2aa4b21d">mbedtls_xtea_crypt_ecb</a> (<a class="el" href="structmbedtls__xtea__context.html">mbedtls_xtea_context</a> *ctx, int mode, const unsigned char input[8], unsigned char output[8])</td></tr>
<tr class="memdesc:a73a0ce1ac62aa079107736ef2aa4b21d"><td class="mdescLeft"> </td><td class="mdescRight">XTEA cipher function. <a href="#a73a0ce1ac62aa079107736ef2aa4b21d">More...</a><br /></td></tr>
<tr class="separator:a73a0ce1ac62aa079107736ef2aa4b21d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad0458b0fba8f223b9343e06e714f50e9"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="xtea_8h.html#ad0458b0fba8f223b9343e06e714f50e9">mbedtls_xtea_crypt_cbc</a> (<a class="el" href="structmbedtls__xtea__context.html">mbedtls_xtea_context</a> *ctx, int mode, size_t length, unsigned char iv[8], const unsigned char *input, unsigned char *output)</td></tr>
<tr class="memdesc:ad0458b0fba8f223b9343e06e714f50e9"><td class="mdescLeft"> </td><td class="mdescRight">XTEA CBC cipher function. <a href="#ad0458b0fba8f223b9343e06e714f50e9">More...</a><br /></td></tr>
<tr class="separator:ad0458b0fba8f223b9343e06e714f50e9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac9684542d55cc9d81ea8260f70a4a239"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="xtea_8h.html#ac9684542d55cc9d81ea8260f70a4a239">mbedtls_xtea_self_test</a> (int verbose)</td></tr>
<tr class="memdesc:ac9684542d55cc9d81ea8260f70a4a239"><td class="mdescLeft"> </td><td class="mdescRight">Checkup routine. <a href="#ac9684542d55cc9d81ea8260f70a4a239">More...</a><br /></td></tr>
<tr class="separator:ac9684542d55cc9d81ea8260f70a4a239"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>XTEA block cipher (32-bit) </p>
<p class="definition">Definition in file <a class="el" href="xtea_8h_source.html">xtea.h</a>.</p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a id="a5e7745d85886bc0564338f562f83c059"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a5e7745d85886bc0564338f562f83c059">◆ </a></span>MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED</h2>
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<td class="memname">#define MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED   -0x0029</td>
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<p>XTEA hardware accelerator failed. </p>
<p class="definition">Definition at line <a class="el" href="xtea_8h_source.html#l00040">40</a> of file <a class="el" href="xtea_8h_source.html">xtea.h</a>.</p>
</div>
</div>
<a id="addf91fc82370cb27115b725ceb261b3d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#addf91fc82370cb27115b725ceb261b3d">◆ </a></span>MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH</h2>
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<td class="memname">#define MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH   -0x0028</td>
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<p>The data input has an invalid length. </p>
<p class="definition">Definition at line <a class="el" href="xtea_8h_source.html#l00039">39</a> of file <a class="el" href="xtea_8h_source.html">xtea.h</a>.</p>
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</div>
<a id="af5ddb7bfc34c65a4b48926f087ab5c26"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af5ddb7bfc34c65a4b48926f087ab5c26">◆ </a></span>MBEDTLS_XTEA_DECRYPT</h2>
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<td class="memname">#define MBEDTLS_XTEA_DECRYPT   0</td>
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</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="xtea_8h_source.html#l00037">37</a> of file <a class="el" href="xtea_8h_source.html">xtea.h</a>.</p>
</div>
</div>
<a id="a52a8e7d7e042c6d11541312838130069"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a52a8e7d7e042c6d11541312838130069">◆ </a></span>MBEDTLS_XTEA_ENCRYPT</h2>
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<td class="memname">#define MBEDTLS_XTEA_ENCRYPT   1</td>
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</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="xtea_8h_source.html#l00036">36</a> of file <a class="el" href="xtea_8h_source.html">xtea.h</a>.</p>
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</div>
<h2 class="groupheader">Function Documentation</h2>
<a id="ad0458b0fba8f223b9343e06e714f50e9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad0458b0fba8f223b9343e06e714f50e9">◆ </a></span>mbedtls_xtea_crypt_cbc()</h2>
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<td class="memname">int mbedtls_xtea_crypt_cbc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__xtea__context.html">mbedtls_xtea_context</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>mode</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>length</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char </td>
<td class="paramname"><em>iv</em>[8], </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char * </td>
<td class="paramname"><em>input</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>output</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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</div><div class="memdoc">
<p>XTEA CBC cipher function. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>XTEA context </td></tr>
<tr><td class="paramname">mode</td><td>MBEDTLS_XTEA_ENCRYPT or MBEDTLS_XTEA_DECRYPT </td></tr>
<tr><td class="paramname">length</td><td>the length of input, multiple of 8 </td></tr>
<tr><td class="paramname">iv</td><td>initialization vector for CBC mode </td></tr>
<tr><td class="paramname">input</td><td>input block </td></tr>
<tr><td class="paramname">output</td><td>output block</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful, MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH if the length % 8 != 0 </dd></dl>
</div>
</div>
<a id="a73a0ce1ac62aa079107736ef2aa4b21d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a73a0ce1ac62aa079107736ef2aa4b21d">◆ </a></span>mbedtls_xtea_crypt_ecb()</h2>
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<td class="memname">int mbedtls_xtea_crypt_ecb </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__xtea__context.html">mbedtls_xtea_context</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>mode</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char </td>
<td class="paramname"><em>input</em>[8], </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char </td>
<td class="paramname"><em>output</em>[8] </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>XTEA cipher function. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>XTEA context </td></tr>
<tr><td class="paramname">mode</td><td>MBEDTLS_XTEA_ENCRYPT or MBEDTLS_XTEA_DECRYPT </td></tr>
<tr><td class="paramname">input</td><td>8-byte input block </td></tr>
<tr><td class="paramname">output</td><td>8-byte output block</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful </dd></dl>
</div>
</div>
<a id="a55eea1f415f3ed5dbf488fa0d9fb5cab"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a55eea1f415f3ed5dbf488fa0d9fb5cab">◆ </a></span>mbedtls_xtea_free()</h2>
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<td class="memname">void mbedtls_xtea_free </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__xtea__context.html">mbedtls_xtea_context</a> * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Clear XTEA context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>XTEA context to be cleared </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="ade30d4f60411e181757ffab0da902e75"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ade30d4f60411e181757ffab0da902e75">◆ </a></span>mbedtls_xtea_init()</h2>
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<td class="memname">void mbedtls_xtea_init </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__xtea__context.html">mbedtls_xtea_context</a> * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
<td></td>
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<p>Initialize XTEA context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>XTEA context to be initialized </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="ac9684542d55cc9d81ea8260f70a4a239"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac9684542d55cc9d81ea8260f70a4a239">◆ </a></span>mbedtls_xtea_self_test()</h2>
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<td class="memname">int mbedtls_xtea_self_test </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>verbose</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Checkup routine. </p>
<dl class="section return"><dt>Returns</dt><dd>0 if successful, or 1 if the test failed </dd></dl>
</div>
</div>
<a id="a3de8a424080f233f2a71c76b93bab130"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3de8a424080f233f2a71c76b93bab130">◆ </a></span>mbedtls_xtea_setup()</h2>
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<td class="memname">void mbedtls_xtea_setup </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__xtea__context.html">mbedtls_xtea_context</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char </td>
<td class="paramname"><em>key</em>[16] </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>XTEA key schedule. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>XTEA context to be initialized </td></tr>
<tr><td class="paramname">key</td><td>the secret key </td></tr>
</table>
</dd>
</dl>
</div>
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