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<p>DES block cipher.
<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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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__des__context.html">mbedtls_des_context</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">DES context structure. <a href="structmbedtls__des__context.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Triple-DES context structure. <a href="structmbedtls__des3__context.html#details">More...</a><br /></td></tr>
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Macros</h2></td></tr>
<tr class="memitem:a2baa8eadc1de93b98c54a459c7817ecd"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a2baa8eadc1de93b98c54a459c7817ecd">MBEDTLS_DES_ENCRYPT</a>   1</td></tr>
<tr class="separator:a2baa8eadc1de93b98c54a459c7817ecd"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae6b569e85f0f2b43420a179a992a1160"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#ae6b569e85f0f2b43420a179a992a1160">MBEDTLS_DES_DECRYPT</a>   0</td></tr>
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<tr class="memitem:a2804ced2d0ca1eea5988cce20789d534"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a2804ced2d0ca1eea5988cce20789d534">MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH</a>   -0x0032</td></tr>
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<tr class="memitem:a2f75ca32740ffda845be83fa4019301f"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a2f75ca32740ffda845be83fa4019301f">MBEDTLS_ERR_DES_HW_ACCEL_FAILED</a>   -0x0033</td></tr>
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<tr class="memitem:ada76e71315efeead481c398b615b8bdc"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#ada76e71315efeead481c398b615b8bdc">MBEDTLS_DES_KEY_SIZE</a>   8</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a0db47d1acf616d86fa382025e87ca9b8"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a0db47d1acf616d86fa382025e87ca9b8">mbedtls_des_init</a> (<a class="el" href="structmbedtls__des__context.html">mbedtls_des_context</a> *ctx)</td></tr>
<tr class="memdesc:a0db47d1acf616d86fa382025e87ca9b8"><td class="mdescLeft"> </td><td class="mdescRight">Initialize DES context. <a href="#a0db47d1acf616d86fa382025e87ca9b8">More...</a><br /></td></tr>
<tr class="separator:a0db47d1acf616d86fa382025e87ca9b8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af167e6e2204a49c2e4edb93370a3dab8"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#af167e6e2204a49c2e4edb93370a3dab8">mbedtls_des_free</a> (<a class="el" href="structmbedtls__des__context.html">mbedtls_des_context</a> *ctx)</td></tr>
<tr class="memdesc:af167e6e2204a49c2e4edb93370a3dab8"><td class="mdescLeft"> </td><td class="mdescRight">Clear DES context. <a href="#af167e6e2204a49c2e4edb93370a3dab8">More...</a><br /></td></tr>
<tr class="separator:af167e6e2204a49c2e4edb93370a3dab8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:abf86c340783d109ea29748dd5714126f"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#abf86c340783d109ea29748dd5714126f">mbedtls_des3_init</a> (<a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> *ctx)</td></tr>
<tr class="memdesc:abf86c340783d109ea29748dd5714126f"><td class="mdescLeft"> </td><td class="mdescRight">Initialize Triple-DES context. <a href="#abf86c340783d109ea29748dd5714126f">More...</a><br /></td></tr>
<tr class="separator:abf86c340783d109ea29748dd5714126f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2e837fe8386148143d98ca9e16d64632"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a2e837fe8386148143d98ca9e16d64632">mbedtls_des3_free</a> (<a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> *ctx)</td></tr>
<tr class="memdesc:a2e837fe8386148143d98ca9e16d64632"><td class="mdescLeft"> </td><td class="mdescRight">Clear Triple-DES context. <a href="#a2e837fe8386148143d98ca9e16d64632">More...</a><br /></td></tr>
<tr class="separator:a2e837fe8386148143d98ca9e16d64632"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6bd13ab5e6cd7b31bce1d6e17b6740b5"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a6bd13ab5e6cd7b31bce1d6e17b6740b5">mbedtls_des_key_set_parity</a> (unsigned char key[<a class="el" href="des_8h.html#ada76e71315efeead481c398b615b8bdc">MBEDTLS_DES_KEY_SIZE</a>])</td></tr>
<tr class="memdesc:a6bd13ab5e6cd7b31bce1d6e17b6740b5"><td class="mdescLeft"> </td><td class="mdescRight">Set key parity on the given key to odd. <a href="#a6bd13ab5e6cd7b31bce1d6e17b6740b5">More...</a><br /></td></tr>
<tr class="separator:a6bd13ab5e6cd7b31bce1d6e17b6740b5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa268f8fd445c90b18add317e9a17a046"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#aa268f8fd445c90b18add317e9a17a046">mbedtls_des_key_check_key_parity</a> (const unsigned char key[<a class="el" href="des_8h.html#ada76e71315efeead481c398b615b8bdc">MBEDTLS_DES_KEY_SIZE</a>])</td></tr>
<tr class="memdesc:aa268f8fd445c90b18add317e9a17a046"><td class="mdescLeft"> </td><td class="mdescRight">Check that key parity on the given key is odd. <a href="#aa268f8fd445c90b18add317e9a17a046">More...</a><br /></td></tr>
<tr class="separator:aa268f8fd445c90b18add317e9a17a046"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aae065a353f2461bbe7150e4827d2d025"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#aae065a353f2461bbe7150e4827d2d025">mbedtls_des_key_check_weak</a> (const unsigned char key[<a class="el" href="des_8h.html#ada76e71315efeead481c398b615b8bdc">MBEDTLS_DES_KEY_SIZE</a>])</td></tr>
<tr class="memdesc:aae065a353f2461bbe7150e4827d2d025"><td class="mdescLeft"> </td><td class="mdescRight">Check that key is not a weak or semi-weak DES key. <a href="#aae065a353f2461bbe7150e4827d2d025">More...</a><br /></td></tr>
<tr class="separator:aae065a353f2461bbe7150e4827d2d025"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a69e09a8459bfffdc473dec3be141d5bb"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a69e09a8459bfffdc473dec3be141d5bb">mbedtls_des_setkey_enc</a> (<a class="el" href="structmbedtls__des__context.html">mbedtls_des_context</a> *ctx, const unsigned char key[<a class="el" href="des_8h.html#ada76e71315efeead481c398b615b8bdc">MBEDTLS_DES_KEY_SIZE</a>])</td></tr>
<tr class="memdesc:a69e09a8459bfffdc473dec3be141d5bb"><td class="mdescLeft"> </td><td class="mdescRight">DES key schedule (56-bit, encryption) <a href="#a69e09a8459bfffdc473dec3be141d5bb">More...</a><br /></td></tr>
<tr class="separator:a69e09a8459bfffdc473dec3be141d5bb"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2c7c908813ed41109e5f7f598cc0c9c4"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a2c7c908813ed41109e5f7f598cc0c9c4">mbedtls_des_setkey_dec</a> (<a class="el" href="structmbedtls__des__context.html">mbedtls_des_context</a> *ctx, const unsigned char key[<a class="el" href="des_8h.html#ada76e71315efeead481c398b615b8bdc">MBEDTLS_DES_KEY_SIZE</a>])</td></tr>
<tr class="memdesc:a2c7c908813ed41109e5f7f598cc0c9c4"><td class="mdescLeft"> </td><td class="mdescRight">DES key schedule (56-bit, decryption) <a href="#a2c7c908813ed41109e5f7f598cc0c9c4">More...</a><br /></td></tr>
<tr class="separator:a2c7c908813ed41109e5f7f598cc0c9c4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a99a16d6e93153c83298110aa96fc55b9"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a99a16d6e93153c83298110aa96fc55b9">mbedtls_des3_set2key_enc</a> (<a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> *ctx, const unsigned char key[<a class="el" href="des_8h.html#ada76e71315efeead481c398b615b8bdc">MBEDTLS_DES_KEY_SIZE</a> *2])</td></tr>
<tr class="memdesc:a99a16d6e93153c83298110aa96fc55b9"><td class="mdescLeft"> </td><td class="mdescRight">Triple-DES key schedule (112-bit, encryption) <a href="#a99a16d6e93153c83298110aa96fc55b9">More...</a><br /></td></tr>
<tr class="separator:a99a16d6e93153c83298110aa96fc55b9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3f1b58a886f8b26a183c5f786670a54a"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a3f1b58a886f8b26a183c5f786670a54a">mbedtls_des3_set2key_dec</a> (<a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> *ctx, const unsigned char key[<a class="el" href="des_8h.html#ada76e71315efeead481c398b615b8bdc">MBEDTLS_DES_KEY_SIZE</a> *2])</td></tr>
<tr class="memdesc:a3f1b58a886f8b26a183c5f786670a54a"><td class="mdescLeft"> </td><td class="mdescRight">Triple-DES key schedule (112-bit, decryption) <a href="#a3f1b58a886f8b26a183c5f786670a54a">More...</a><br /></td></tr>
<tr class="separator:a3f1b58a886f8b26a183c5f786670a54a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6fd7043d3f134c16c5dbe8c442e55f2c"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a6fd7043d3f134c16c5dbe8c442e55f2c">mbedtls_des3_set3key_enc</a> (<a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> *ctx, const unsigned char key[<a class="el" href="des_8h.html#ada76e71315efeead481c398b615b8bdc">MBEDTLS_DES_KEY_SIZE</a> *3])</td></tr>
<tr class="memdesc:a6fd7043d3f134c16c5dbe8c442e55f2c"><td class="mdescLeft"> </td><td class="mdescRight">Triple-DES key schedule (168-bit, encryption) <a href="#a6fd7043d3f134c16c5dbe8c442e55f2c">More...</a><br /></td></tr>
<tr class="separator:a6fd7043d3f134c16c5dbe8c442e55f2c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aec78c60a3fa75abd7255d120747fde52"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#aec78c60a3fa75abd7255d120747fde52">mbedtls_des3_set3key_dec</a> (<a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> *ctx, const unsigned char key[<a class="el" href="des_8h.html#ada76e71315efeead481c398b615b8bdc">MBEDTLS_DES_KEY_SIZE</a> *3])</td></tr>
<tr class="memdesc:aec78c60a3fa75abd7255d120747fde52"><td class="mdescLeft"> </td><td class="mdescRight">Triple-DES key schedule (168-bit, decryption) <a href="#aec78c60a3fa75abd7255d120747fde52">More...</a><br /></td></tr>
<tr class="separator:aec78c60a3fa75abd7255d120747fde52"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa713501cc3e30c39a763b4568698f5c1"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#aa713501cc3e30c39a763b4568698f5c1">mbedtls_des_crypt_ecb</a> (<a class="el" href="structmbedtls__des__context.html">mbedtls_des_context</a> *ctx, const unsigned char input[8], unsigned char output[8])</td></tr>
<tr class="memdesc:aa713501cc3e30c39a763b4568698f5c1"><td class="mdescLeft"> </td><td class="mdescRight">DES-ECB block encryption/decryption. <a href="#aa713501cc3e30c39a763b4568698f5c1">More...</a><br /></td></tr>
<tr class="separator:aa713501cc3e30c39a763b4568698f5c1"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a95353a2f0d2e8d1377f43f71ca12a231"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a95353a2f0d2e8d1377f43f71ca12a231">mbedtls_des_crypt_cbc</a> (<a class="el" href="structmbedtls__des__context.html">mbedtls_des_context</a> *ctx, int mode, size_t length, unsigned char iv[8], const unsigned char *input, unsigned char *output)</td></tr>
<tr class="memdesc:a95353a2f0d2e8d1377f43f71ca12a231"><td class="mdescLeft"> </td><td class="mdescRight">DES-CBC buffer encryption/decryption. <a href="#a95353a2f0d2e8d1377f43f71ca12a231">More...</a><br /></td></tr>
<tr class="separator:a95353a2f0d2e8d1377f43f71ca12a231"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a933b8f629cc201e06f5e89396d065204"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a933b8f629cc201e06f5e89396d065204">mbedtls_des3_crypt_ecb</a> (<a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> *ctx, const unsigned char input[8], unsigned char output[8])</td></tr>
<tr class="memdesc:a933b8f629cc201e06f5e89396d065204"><td class="mdescLeft"> </td><td class="mdescRight">3DES-ECB block encryption/decryption <a href="#a933b8f629cc201e06f5e89396d065204">More...</a><br /></td></tr>
<tr class="separator:a933b8f629cc201e06f5e89396d065204"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4f5bb9106306e11c906abfa46fc51b94"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a4f5bb9106306e11c906abfa46fc51b94">mbedtls_des3_crypt_cbc</a> (<a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> *ctx, int mode, size_t length, unsigned char iv[8], const unsigned char *input, unsigned char *output)</td></tr>
<tr class="memdesc:a4f5bb9106306e11c906abfa46fc51b94"><td class="mdescLeft"> </td><td class="mdescRight">3DES-CBC buffer encryption/decryption <a href="#a4f5bb9106306e11c906abfa46fc51b94">More...</a><br /></td></tr>
<tr class="separator:a4f5bb9106306e11c906abfa46fc51b94"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9ee690737bded4f7f6e12da86110a8e5"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a9ee690737bded4f7f6e12da86110a8e5">mbedtls_des_setkey</a> (uint32_t SK[32], const unsigned char key[<a class="el" href="des_8h.html#ada76e71315efeead481c398b615b8bdc">MBEDTLS_DES_KEY_SIZE</a>])</td></tr>
<tr class="memdesc:a9ee690737bded4f7f6e12da86110a8e5"><td class="mdescLeft"> </td><td class="mdescRight">Internal function for key expansion. (Only exposed to allow overriding it, see MBEDTLS_DES_SETKEY_ALT) <a href="#a9ee690737bded4f7f6e12da86110a8e5">More...</a><br /></td></tr>
<tr class="separator:a9ee690737bded4f7f6e12da86110a8e5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a05ea48cba38269e488ac4d4e54dacc11"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="des_8h.html#a05ea48cba38269e488ac4d4e54dacc11">mbedtls_des_self_test</a> (int verbose)</td></tr>
<tr class="memdesc:a05ea48cba38269e488ac4d4e54dacc11"><td class="mdescLeft"> </td><td class="mdescRight">Checkup routine. <a href="#a05ea48cba38269e488ac4d4e54dacc11">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>DES block cipher. </p>
<dl class="section warning"><dt>Warning</dt><dd>DES is considered a weak cipher and its use constitutes a security risk. We recommend considering stronger ciphers instead. </dd></dl>
<p class="definition">Definition in file <a class="el" href="des_8h_source.html">des.h</a>.</p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a id="ae6b569e85f0f2b43420a179a992a1160"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae6b569e85f0f2b43420a179a992a1160">◆ </a></span>MBEDTLS_DES_DECRYPT</h2>
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<td class="memname">#define MBEDTLS_DES_DECRYPT   0</td>
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<p class="definition">Definition at line <a class="el" href="des_8h_source.html#l00042">42</a> of file <a class="el" href="des_8h_source.html">des.h</a>.</p>
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<a id="a2baa8eadc1de93b98c54a459c7817ecd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2baa8eadc1de93b98c54a459c7817ecd">◆ </a></span>MBEDTLS_DES_ENCRYPT</h2>
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<td class="memname">#define MBEDTLS_DES_ENCRYPT   1</td>
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<p class="definition">Definition at line <a class="el" href="des_8h_source.html#l00041">41</a> of file <a class="el" href="des_8h_source.html">des.h</a>.</p>
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<a id="ada76e71315efeead481c398b615b8bdc"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ada76e71315efeead481c398b615b8bdc">◆ </a></span>MBEDTLS_DES_KEY_SIZE</h2>
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<td class="memname">#define MBEDTLS_DES_KEY_SIZE   8</td>
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<p class="definition">Definition at line <a class="el" href="des_8h_source.html#l00047">47</a> of file <a class="el" href="des_8h_source.html">des.h</a>.</p>
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<a id="a2f75ca32740ffda845be83fa4019301f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2f75ca32740ffda845be83fa4019301f">◆ </a></span>MBEDTLS_ERR_DES_HW_ACCEL_FAILED</h2>
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<td class="memname">#define MBEDTLS_ERR_DES_HW_ACCEL_FAILED   -0x0033</td>
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<p>DES hardware accelerator failed. </p>
<p class="definition">Definition at line <a class="el" href="des_8h_source.html#l00045">45</a> of file <a class="el" href="des_8h_source.html">des.h</a>.</p>
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<a id="a2804ced2d0ca1eea5988cce20789d534"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2804ced2d0ca1eea5988cce20789d534">◆ </a></span>MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH</h2>
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<td class="memname">#define MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH   -0x0032</td>
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<p>The data input has an invalid length. </p>
<p class="definition">Definition at line <a class="el" href="des_8h_source.html#l00044">44</a> of file <a class="el" href="des_8h_source.html">des.h</a>.</p>
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<h2 class="groupheader">Function Documentation</h2>
<a id="a4f5bb9106306e11c906abfa46fc51b94"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4f5bb9106306e11c906abfa46fc51b94">◆ </a></span>mbedtls_des3_crypt_cbc()</h2>
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<td class="memname">int mbedtls_des3_crypt_cbc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>mode</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>length</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char </td>
<td class="paramname"><em>iv</em>[8], </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char * </td>
<td class="paramname"><em>input</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>output</em> </td>
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<td>)</td>
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<p>3DES-CBC buffer encryption/decryption </p>
<dl class="section note"><dt>Note</dt><dd>Upon exit, the content of the IV is updated so that you can call the function same function again on the following block(s) of data and get the same result as if it was encrypted in one call. This allows a "streaming" usage. If on the other hand you need to retain the contents of the IV, you should either save it manually or use the cipher module instead.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>3DES context </td></tr>
<tr><td class="paramname">mode</td><td>MBEDTLS_DES_ENCRYPT or MBEDTLS_DES_DECRYPT </td></tr>
<tr><td class="paramname">length</td><td>length of the input data </td></tr>
<tr><td class="paramname">iv</td><td>initialization vector (updated after use) </td></tr>
<tr><td class="paramname">input</td><td>buffer holding the input data </td></tr>
<tr><td class="paramname">output</td><td>buffer holding the output data</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful, or MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH </dd></dl>
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</div>
<a id="a933b8f629cc201e06f5e89396d065204"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a933b8f629cc201e06f5e89396d065204">◆ </a></span>mbedtls_des3_crypt_ecb()</h2>
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<td class="memname">int mbedtls_des3_crypt_ecb </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char </td>
<td class="paramname"><em>input</em>[8], </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char </td>
<td class="paramname"><em>output</em>[8] </td>
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<p>3DES-ECB block encryption/decryption </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>3DES context </td></tr>
<tr><td class="paramname">input</td><td>64-bit input block </td></tr>
<tr><td class="paramname">output</td><td>64-bit output block</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful </dd></dl>
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<a id="a2e837fe8386148143d98ca9e16d64632"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2e837fe8386148143d98ca9e16d64632">◆ </a></span>mbedtls_des3_free()</h2>
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<td class="memname">void mbedtls_des3_free </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
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<p>Clear Triple-DES context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DES3 context to be cleared </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="abf86c340783d109ea29748dd5714126f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#abf86c340783d109ea29748dd5714126f">◆ </a></span>mbedtls_des3_init()</h2>
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<td class="memname">void mbedtls_des3_init </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
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<p>Initialize Triple-DES context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DES3 context to be initialized </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="a3f1b58a886f8b26a183c5f786670a54a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3f1b58a886f8b26a183c5f786670a54a">◆ </a></span>mbedtls_des3_set2key_dec()</h2>
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<td class="memname">int mbedtls_des3_set2key_dec </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char </td>
<td class="paramname"><em>key</em>[MBEDTLS_DES_KEY_SIZE *2] </td>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Triple-DES key schedule (112-bit, decryption) </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>3DES context to be initialized </td></tr>
<tr><td class="paramname">key</td><td>16-byte secret key</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 </dd></dl>
</div>
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<a id="a99a16d6e93153c83298110aa96fc55b9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a99a16d6e93153c83298110aa96fc55b9">◆ </a></span>mbedtls_des3_set2key_enc()</h2>
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<td class="memname">int mbedtls_des3_set2key_enc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char </td>
<td class="paramname"><em>key</em>[MBEDTLS_DES_KEY_SIZE *2] </td>
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<td>)</td>
<td></td><td></td>
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<p>Triple-DES key schedule (112-bit, encryption) </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>3DES context to be initialized </td></tr>
<tr><td class="paramname">key</td><td>16-byte secret key</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 </dd></dl>
</div>
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<a id="aec78c60a3fa75abd7255d120747fde52"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aec78c60a3fa75abd7255d120747fde52">◆ </a></span>mbedtls_des3_set3key_dec()</h2>
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<td class="memname">int mbedtls_des3_set3key_dec </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_context</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char </td>
<td class="paramname"><em>key</em>[MBEDTLS_DES_KEY_SIZE *3] </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Triple-DES key schedule (168-bit, decryption) </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>3DES context to be initialized </td></tr>
<tr><td class="paramname">key</td><td>24-byte secret key</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 </dd></dl>
</div>
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<a id="a6fd7043d3f134c16c5dbe8c442e55f2c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6fd7043d3f134c16c5dbe8c442e55f2c">◆ </a></span>mbedtls_des3_set3key_enc()</h2>
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<td class="memname">int mbedtls_des3_set3key_enc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des3__context.html">mbedtls_des3_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>[MBEDTLS_DES_KEY_SIZE *3] </td>
</tr>
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<td>)</td>
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<p>Triple-DES key schedule (168-bit, encryption) </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>3DES context to be initialized </td></tr>
<tr><td class="paramname">key</td><td>24-byte secret key</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 </dd></dl>
</div>
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<a id="a95353a2f0d2e8d1377f43f71ca12a231"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a95353a2f0d2e8d1377f43f71ca12a231">◆ </a></span>mbedtls_des_crypt_cbc()</h2>
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<td class="memname">int mbedtls_des_crypt_cbc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des__context.html">mbedtls_des_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>
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<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>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>DES-CBC buffer encryption/decryption. </p>
<dl class="section note"><dt>Note</dt><dd>Upon exit, the content of the IV is updated so that you can call the function same function again on the following block(s) of data and get the same result as if it was encrypted in one call. This allows a "streaming" usage. If on the other hand you need to retain the contents of the IV, you should either save it manually or use the cipher module instead.</dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DES context </td></tr>
<tr><td class="paramname">mode</td><td>MBEDTLS_DES_ENCRYPT or MBEDTLS_DES_DECRYPT </td></tr>
<tr><td class="paramname">length</td><td>length of the input data </td></tr>
<tr><td class="paramname">iv</td><td>initialization vector (updated after use) </td></tr>
<tr><td class="paramname">input</td><td>buffer holding the input data </td></tr>
<tr><td class="paramname">output</td><td>buffer holding the output data</td></tr>
</table>
</dd>
</dl>
<dl class="section warning"><dt>Warning</dt><dd>DES is considered a weak cipher and its use constitutes a security risk. We recommend considering stronger ciphers instead. </dd></dl>
</div>
</div>
<a id="aa713501cc3e30c39a763b4568698f5c1"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aa713501cc3e30c39a763b4568698f5c1">◆ </a></span>mbedtls_des_crypt_ecb()</h2>
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<td class="memname">int mbedtls_des_crypt_ecb </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des__context.html">mbedtls_des_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>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>
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<p>DES-ECB block encryption/decryption. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DES context </td></tr>
<tr><td class="paramname">input</td><td>64-bit input block </td></tr>
<tr><td class="paramname">output</td><td>64-bit output block</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful</dd></dl>
<dl class="section warning"><dt>Warning</dt><dd>DES is considered a weak cipher and its use constitutes a security risk. We recommend considering stronger ciphers instead. </dd></dl>
</div>
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<a id="af167e6e2204a49c2e4edb93370a3dab8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af167e6e2204a49c2e4edb93370a3dab8">◆ </a></span>mbedtls_des_free()</h2>
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<td class="memname">void mbedtls_des_free </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des__context.html">mbedtls_des_context</a> * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
<td></td>
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<p>Clear DES context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DES context to be cleared</td></tr>
</table>
</dd>
</dl>
<dl class="section warning"><dt>Warning</dt><dd>DES is considered a weak cipher and its use constitutes a security risk. We recommend considering stronger ciphers instead. </dd></dl>
</div>
</div>
<a id="a0db47d1acf616d86fa382025e87ca9b8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a0db47d1acf616d86fa382025e87ca9b8">◆ </a></span>mbedtls_des_init()</h2>
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<td class="memname">void mbedtls_des_init </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des__context.html">mbedtls_des_context</a> * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
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<p>Initialize DES context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DES context to be initialized</td></tr>
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</dd>
</dl>
<dl class="section warning"><dt>Warning</dt><dd>DES is considered a weak cipher and its use constitutes a security risk. We recommend considering stronger ciphers instead. </dd></dl>
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<a id="aa268f8fd445c90b18add317e9a17a046"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aa268f8fd445c90b18add317e9a17a046">◆ </a></span>mbedtls_des_key_check_key_parity()</h2>
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<td class="memname">int mbedtls_des_key_check_key_parity </td>
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<td class="paramtype">const unsigned char </td>
<td class="paramname"><em>key</em>[MBEDTLS_DES_KEY_SIZE]</td><td>)</td>
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<p>Check that key parity on the given key is odd. </p>
<p>DES keys are 56 bits long, but each byte is padded with a parity bit to allow verification.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>8-byte secret key</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 is parity was ok, 1 if parity was not correct.</dd></dl>
<dl class="section warning"><dt>Warning</dt><dd>DES is considered a weak cipher and its use constitutes a security risk. We recommend considering stronger ciphers instead. </dd></dl>
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<a id="aae065a353f2461bbe7150e4827d2d025"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aae065a353f2461bbe7150e4827d2d025">◆ </a></span>mbedtls_des_key_check_weak()</h2>
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<td class="memname">int mbedtls_des_key_check_weak </td>
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<td class="paramtype">const unsigned char </td>
<td class="paramname"><em>key</em>[MBEDTLS_DES_KEY_SIZE]</td><td>)</td>
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<p>Check that key is not a weak or semi-weak DES key. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>8-byte secret key</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if no weak key was found, 1 if a weak key was identified.</dd></dl>
<dl class="section warning"><dt>Warning</dt><dd>DES is considered a weak cipher and its use constitutes a security risk. We recommend considering stronger ciphers instead. </dd></dl>
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<a id="a6bd13ab5e6cd7b31bce1d6e17b6740b5"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6bd13ab5e6cd7b31bce1d6e17b6740b5">◆ </a></span>mbedtls_des_key_set_parity()</h2>
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<td class="memname">void mbedtls_des_key_set_parity </td>
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<td class="paramtype">unsigned char </td>
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<p>Set key parity on the given key to odd. </p>
<p>DES keys are 56 bits long, but each byte is padded with a parity bit to allow verification.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">key</td><td>8-byte secret key</td></tr>
</table>
</dd>
</dl>
<dl class="section warning"><dt>Warning</dt><dd>DES is considered a weak cipher and its use constitutes a security risk. We recommend considering stronger ciphers instead. </dd></dl>
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<a id="a05ea48cba38269e488ac4d4e54dacc11"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a05ea48cba38269e488ac4d4e54dacc11">◆ </a></span>mbedtls_des_self_test()</h2>
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<td class="memname">int mbedtls_des_self_test </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>verbose</em></td><td>)</td>
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<p>Checkup routine. </p>
<dl class="section return"><dt>Returns</dt><dd>0 if successful, or 1 if the test failed </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a9ee690737bded4f7f6e12da86110a8e5">◆ </a></span>mbedtls_des_setkey()</h2>
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<td class="memname">void mbedtls_des_setkey </td>
<td>(</td>
<td class="paramtype">uint32_t </td>
<td class="paramname"><em>SK</em>[32], </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char </td>
<td class="paramname"><em>key</em>[MBEDTLS_DES_KEY_SIZE] </td>
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<p>Internal function for key expansion. (Only exposed to allow overriding it, see MBEDTLS_DES_SETKEY_ALT) </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">SK</td><td>Round keys </td></tr>
<tr><td class="paramname">key</td><td>Base key</td></tr>
</table>
</dd>
</dl>
<dl class="section warning"><dt>Warning</dt><dd>DES is considered a weak cipher and its use constitutes a security risk. We recommend considering stronger ciphers instead. </dd></dl>
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<a id="a2c7c908813ed41109e5f7f598cc0c9c4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2c7c908813ed41109e5f7f598cc0c9c4">◆ </a></span>mbedtls_des_setkey_dec()</h2>
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<td class="memname">int mbedtls_des_setkey_dec </td>
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<td class="paramtype"><a class="el" href="structmbedtls__des__context.html">mbedtls_des_context</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const unsigned char </td>
<td class="paramname"><em>key</em>[MBEDTLS_DES_KEY_SIZE] </td>
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<p>DES key schedule (56-bit, decryption) </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DES context to be initialized </td></tr>
<tr><td class="paramname">key</td><td>8-byte secret key</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0</dd></dl>
<dl class="section warning"><dt>Warning</dt><dd>DES is considered a weak cipher and its use constitutes a security risk. We recommend considering stronger ciphers instead. </dd></dl>
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<a id="a69e09a8459bfffdc473dec3be141d5bb"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a69e09a8459bfffdc473dec3be141d5bb">◆ </a></span>mbedtls_des_setkey_enc()</h2>
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<td class="memname">int mbedtls_des_setkey_enc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structmbedtls__des__context.html">mbedtls_des_context</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char </td>
<td class="paramname"><em>key</em>[MBEDTLS_DES_KEY_SIZE] </td>
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<p>DES key schedule (56-bit, encryption) </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DES context to be initialized </td></tr>
<tr><td class="paramname">key</td><td>8-byte secret key</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0</dd></dl>
<dl class="section warning"><dt>Warning</dt><dd>DES is considered a weak cipher and its use constitutes a security risk. We recommend considering stronger ciphers instead. </dd></dl>
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