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<p>Blowfish 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 <string.h></code><br/>
<code>#include <inttypes.h></code><br/>
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Include dependency graph for blowfish.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="structblowfish__context.html">blowfish_context</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Blowfish context structure. <a href="structblowfish__context.html#details">More...</a><br/></td></tr>
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Macros</h2></td></tr>
<tr class="memitem:a08181b24dc6716d2ce995653d1bf9263"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#a08181b24dc6716d2ce995653d1bf9263">BLOWFISH_ENCRYPT</a>   1</td></tr>
<tr class="separator:a08181b24dc6716d2ce995653d1bf9263"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aef79827b2885cff8b753e01521552942"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#aef79827b2885cff8b753e01521552942">BLOWFISH_DECRYPT</a>   0</td></tr>
<tr class="separator:aef79827b2885cff8b753e01521552942"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9b3eef52032f51fd010a59d1265e644c"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#a9b3eef52032f51fd010a59d1265e644c">BLOWFISH_MAX_KEY</a>   448</td></tr>
<tr class="separator:a9b3eef52032f51fd010a59d1265e644c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a751816537f868b47b91f4c1f448dc2ea"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#a751816537f868b47b91f4c1f448dc2ea">BLOWFISH_MIN_KEY</a>   32</td></tr>
<tr class="separator:a751816537f868b47b91f4c1f448dc2ea"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4dd158a68247e4a094f9bb607c62b131"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#a4dd158a68247e4a094f9bb607c62b131">BLOWFISH_ROUNDS</a>   16</td></tr>
<tr class="memdesc:a4dd158a68247e4a094f9bb607c62b131"><td class="mdescLeft"> </td><td class="mdescRight">Rounds to use. <a href="#a4dd158a68247e4a094f9bb607c62b131">More...</a><br/></td></tr>
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<tr class="memitem:a47a29de4f2d383c17ca87cf34b05f047"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#a47a29de4f2d383c17ca87cf34b05f047">BLOWFISH_BLOCKSIZE</a>   8 /* Blowfish uses 64 bit blocks */</td></tr>
<tr class="separator:a47a29de4f2d383c17ca87cf34b05f047"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a56226b271b174aba0746c23d2d085a74"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#a56226b271b174aba0746c23d2d085a74">POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH</a>   -0x0016</td></tr>
<tr class="memdesc:a56226b271b174aba0746c23d2d085a74"><td class="mdescLeft"> </td><td class="mdescRight">Invalid key length. <a href="#a56226b271b174aba0746c23d2d085a74">More...</a><br/></td></tr>
<tr class="separator:a56226b271b174aba0746c23d2d085a74"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a776d91162e4c250f4b2625884e52a54f"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#a776d91162e4c250f4b2625884e52a54f">POLARSSL_ERR_BLOWFISH_INVALID_INPUT_LENGTH</a>   -0x0018</td></tr>
<tr class="memdesc:a776d91162e4c250f4b2625884e52a54f"><td class="mdescLeft"> </td><td class="mdescRight">Invalid data input length. <a href="#a776d91162e4c250f4b2625884e52a54f">More...</a><br/></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:af97e2fe5fa79c336f33f573006bcf23e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#af97e2fe5fa79c336f33f573006bcf23e">blowfish_init</a> (<a class="el" href="structblowfish__context.html">blowfish_context</a> *ctx)</td></tr>
<tr class="memdesc:af97e2fe5fa79c336f33f573006bcf23e"><td class="mdescLeft"> </td><td class="mdescRight">Initialize Blowfish context. <a href="#af97e2fe5fa79c336f33f573006bcf23e">More...</a><br/></td></tr>
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<tr class="memitem:ad4f7ffde27526e44160d7639bb785f81"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#ad4f7ffde27526e44160d7639bb785f81">blowfish_free</a> (<a class="el" href="structblowfish__context.html">blowfish_context</a> *ctx)</td></tr>
<tr class="memdesc:ad4f7ffde27526e44160d7639bb785f81"><td class="mdescLeft"> </td><td class="mdescRight">Clear Blowfish context. <a href="#ad4f7ffde27526e44160d7639bb785f81">More...</a><br/></td></tr>
<tr class="separator:ad4f7ffde27526e44160d7639bb785f81"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a10858d333b6306cbbc87831dab3c50ec"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#a10858d333b6306cbbc87831dab3c50ec">blowfish_setkey</a> (<a class="el" href="structblowfish__context.html">blowfish_context</a> *ctx, const unsigned char *key, unsigned int keysize)</td></tr>
<tr class="memdesc:a10858d333b6306cbbc87831dab3c50ec"><td class="mdescLeft"> </td><td class="mdescRight">Blowfish key schedule. <a href="#a10858d333b6306cbbc87831dab3c50ec">More...</a><br/></td></tr>
<tr class="separator:a10858d333b6306cbbc87831dab3c50ec"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a5400eb552a86b1235831a131a779b7e3"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#a5400eb552a86b1235831a131a779b7e3">blowfish_crypt_ecb</a> (<a class="el" href="structblowfish__context.html">blowfish_context</a> *ctx, int mode, const unsigned char input[<a class="el" href="blowfish_8h.html#a47a29de4f2d383c17ca87cf34b05f047">BLOWFISH_BLOCKSIZE</a>], unsigned char output[<a class="el" href="blowfish_8h.html#a47a29de4f2d383c17ca87cf34b05f047">BLOWFISH_BLOCKSIZE</a>])</td></tr>
<tr class="memdesc:a5400eb552a86b1235831a131a779b7e3"><td class="mdescLeft"> </td><td class="mdescRight">Blowfish-ECB block encryption/decryption. <a href="#a5400eb552a86b1235831a131a779b7e3">More...</a><br/></td></tr>
<tr class="separator:a5400eb552a86b1235831a131a779b7e3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6582d23a9993d784761182c32426ea18"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#a6582d23a9993d784761182c32426ea18">blowfish_crypt_cbc</a> (<a class="el" href="structblowfish__context.html">blowfish_context</a> *ctx, int mode, size_t length, unsigned char iv[<a class="el" href="blowfish_8h.html#a47a29de4f2d383c17ca87cf34b05f047">BLOWFISH_BLOCKSIZE</a>], const unsigned char *input, unsigned char *output)</td></tr>
<tr class="memdesc:a6582d23a9993d784761182c32426ea18"><td class="mdescLeft"> </td><td class="mdescRight">Blowfish-CBC buffer encryption/decryption Length should be a multiple of the block size (8 bytes) <a href="#a6582d23a9993d784761182c32426ea18">More...</a><br/></td></tr>
<tr class="separator:a6582d23a9993d784761182c32426ea18"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a63ca1aaffb247a5c5f4a51c39cd78264"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#a63ca1aaffb247a5c5f4a51c39cd78264">blowfish_crypt_cfb64</a> (<a class="el" href="structblowfish__context.html">blowfish_context</a> *ctx, int mode, size_t length, size_t *iv_off, unsigned char iv[<a class="el" href="blowfish_8h.html#a47a29de4f2d383c17ca87cf34b05f047">BLOWFISH_BLOCKSIZE</a>], const unsigned char *input, unsigned char *output)</td></tr>
<tr class="memdesc:a63ca1aaffb247a5c5f4a51c39cd78264"><td class="mdescLeft"> </td><td class="mdescRight">Blowfish CFB buffer encryption/decryption. <a href="#a63ca1aaffb247a5c5f4a51c39cd78264">More...</a><br/></td></tr>
<tr class="separator:a63ca1aaffb247a5c5f4a51c39cd78264"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:abf3faecfe5a6800701f4c6951f930743"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="blowfish_8h.html#abf3faecfe5a6800701f4c6951f930743">blowfish_crypt_ctr</a> (<a class="el" href="structblowfish__context.html">blowfish_context</a> *ctx, size_t length, size_t *nc_off, unsigned char nonce_counter[<a class="el" href="blowfish_8h.html#a47a29de4f2d383c17ca87cf34b05f047">BLOWFISH_BLOCKSIZE</a>], unsigned char stream_block[<a class="el" href="blowfish_8h.html#a47a29de4f2d383c17ca87cf34b05f047">BLOWFISH_BLOCKSIZE</a>], const unsigned char *input, unsigned char *output)</td></tr>
<tr class="memdesc:abf3faecfe5a6800701f4c6951f930743"><td class="mdescLeft"> </td><td class="mdescRight">Blowfish-CTR buffer encryption/decryption. <a href="#abf3faecfe5a6800701f4c6951f930743">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>Blowfish block cipher. </p>
<p>Copyright (C) 2012-2014, Brainspark B.V.</p>
<p>This file is part of PolarSSL (<a href="http://www.polarssl.org">http://www.polarssl.org</a>) Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org></p>
<p>All rights reserved.</p>
<p>This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.</p>
<p>This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.</p>
<p>You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. </p>
<p>Definition in file <a class="el" href="blowfish_8h_source.html">blowfish.h</a>.</p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a class="anchor" id="a47a29de4f2d383c17ca87cf34b05f047"></a>
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<td class="memname">#define BLOWFISH_BLOCKSIZE   8 /* Blowfish uses 64 bit blocks */</td>
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<p>Definition at line <a class="el" href="blowfish_8h_source.html#l00050">50</a> of file <a class="el" href="blowfish_8h_source.html">blowfish.h</a>.</p>
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<td class="memname">#define BLOWFISH_DECRYPT   0</td>
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<p>Definition at line <a class="el" href="blowfish_8h_source.html#l00046">46</a> of file <a class="el" href="blowfish_8h_source.html">blowfish.h</a>.</p>
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<td class="memname">#define BLOWFISH_ENCRYPT   1</td>
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<p>Definition at line <a class="el" href="blowfish_8h_source.html#l00045">45</a> of file <a class="el" href="blowfish_8h_source.html">blowfish.h</a>.</p>
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<td class="memname">#define BLOWFISH_MAX_KEY   448</td>
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<p>Definition at line <a class="el" href="blowfish_8h_source.html#l00047">47</a> of file <a class="el" href="blowfish_8h_source.html">blowfish.h</a>.</p>
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<td class="memname">#define BLOWFISH_MIN_KEY   32</td>
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<p>Definition at line <a class="el" href="blowfish_8h_source.html#l00048">48</a> of file <a class="el" href="blowfish_8h_source.html">blowfish.h</a>.</p>
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<td class="memname">#define BLOWFISH_ROUNDS   16</td>
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<p>Rounds to use. </p>
<p>When increasing this value, make sure to extend the initialisation vectors </p>
<p>Definition at line <a class="el" href="blowfish_8h_source.html#l00049">49</a> of file <a class="el" href="blowfish_8h_source.html">blowfish.h</a>.</p>
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<td class="memname">#define POLARSSL_ERR_BLOWFISH_INVALID_INPUT_LENGTH   -0x0018</td>
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<p>Invalid data input length. </p>
<p>Definition at line <a class="el" href="blowfish_8h_source.html#l00053">53</a> of file <a class="el" href="blowfish_8h_source.html">blowfish.h</a>.</p>
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<td class="memname">#define POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH   -0x0016</td>
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<p>Invalid key length. </p>
<p>Definition at line <a class="el" href="blowfish_8h_source.html#l00052">52</a> of file <a class="el" href="blowfish_8h_source.html">blowfish.h</a>.</p>
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<h2 class="groupheader">Function Documentation</h2>
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<td class="memname">int blowfish_crypt_cbc </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structblowfish__context.html">blowfish_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="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>[BLOWFISH_BLOCKSIZE], </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>Blowfish-CBC buffer encryption/decryption Length should be a multiple of the block size (8 bytes) </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>Blowfish context </td></tr>
<tr><td class="paramname">mode</td><td>BLOWFISH_ENCRYPT or BLOWFISH_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>
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</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful, or POLARSSL_ERR_BLOWFISH_INVALID_INPUT_LENGTH </dd></dl>
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<td class="memname">int blowfish_crypt_cfb64 </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structblowfish__context.html">blowfish_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">size_t * </td>
<td class="paramname"><em>iv_off</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char </td>
<td class="paramname"><em>iv</em>[BLOWFISH_BLOCKSIZE], </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>
</tr>
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<p>Blowfish CFB buffer encryption/decryption. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>Blowfish context </td></tr>
<tr><td class="paramname">mode</td><td>BLOWFISH_ENCRYPT or BLOWFISH_DECRYPT </td></tr>
<tr><td class="paramname">length</td><td>length of the input data </td></tr>
<tr><td class="paramname">iv_off</td><td>offset in IV (updated after use) </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 </dd></dl>
</div>
</div>
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<td class="memname">int blowfish_crypt_ctr </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structblowfish__context.html">blowfish_context</a> * </td>
<td class="paramname"><em>ctx</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">size_t * </td>
<td class="paramname"><em>nc_off</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char </td>
<td class="paramname"><em>nonce_counter</em>[BLOWFISH_BLOCKSIZE], </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char </td>
<td class="paramname"><em>stream_block</em>[BLOWFISH_BLOCKSIZE], </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>
</tr>
</table>
</div><div class="memdoc">
<p>Blowfish-CTR buffer encryption/decryption. </p>
<p>Warning: You have to keep the maximum use of your counter in mind!</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>Blowfish context </td></tr>
<tr><td class="paramname">length</td><td>The length of the data </td></tr>
<tr><td class="paramname">nc_off</td><td>The offset in the current stream_block (for resuming within current cipher stream). The offset pointer to should be 0 at the start of a stream. </td></tr>
<tr><td class="paramname">nonce_counter</td><td>The 64-bit nonce and counter. </td></tr>
<tr><td class="paramname">stream_block</td><td>The saved stream-block for resuming. Is overwritten by the function. </td></tr>
<tr><td class="paramname">input</td><td>The input data stream </td></tr>
<tr><td class="paramname">output</td><td>The output data stream</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful </dd></dl>
</div>
</div>
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<td class="memname">int blowfish_crypt_ecb </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structblowfish__context.html">blowfish_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>[BLOWFISH_BLOCKSIZE], </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char </td>
<td class="paramname"><em>output</em>[BLOWFISH_BLOCKSIZE] </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Blowfish-ECB block encryption/decryption. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>Blowfish context </td></tr>
<tr><td class="paramname">mode</td><td>BLOWFISH_ENCRYPT or BLOWFISH_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>
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<td class="memname">void blowfish_free </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structblowfish__context.html">blowfish_context</a> * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Clear Blowfish context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>Blowfish context to be cleared </td></tr>
</table>
</dd>
</dl>
</div>
</div>
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<td class="memname">void blowfish_init </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structblowfish__context.html">blowfish_context</a> * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Initialize Blowfish context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>Blowfish context to be initialized </td></tr>
</table>
</dd>
</dl>
</div>
</div>
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<td class="memname">int blowfish_setkey </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structblowfish__context.html">blowfish_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>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"><em>keysize</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Blowfish key schedule. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>Blowfish context to be initialized </td></tr>
<tr><td class="paramname">key</td><td>encryption key </td></tr>
<tr><td class="paramname">keysize</td><td>must be between 32 and 448 bits</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful, or POLARSSL_ERR_BLOWFISH_INVALID_KEY_LENGTH </dd></dl>
</div>
</div>
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