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<p>Diffie-Hellman-Merkle key exchange.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include "<a class="el" href="bignum_8h_source.html">bignum.h</a>"</code><br/>
</div><div class="textblock"><div class="dynheader">
Include dependency graph for dhm.h:</div>
<div class="dyncontent">
<div class="center"><img src="dhm_8h__incl.png" border="0" usemap="#dhm_8h" alt=""/></div>
<map name="dhm_8h" id="dhm_8h">
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</div><div class="textblock"><div class="dynheader">
This graph shows which files directly or indirectly include this file:</div>
<div class="dyncontent">
<div class="center"><img src="dhm_8h__dep__incl.png" border="0" usemap="#dhm_8hdep" alt=""/></div>
<map name="dhm_8hdep" id="dhm_8hdep">
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<p><a href="dhm_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
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="structdhm__context.html">dhm_context</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">DHM context structure. <a href="structdhm__context.html#details">More...</a><br/></td></tr>
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Macros</h2></td></tr>
<tr class="memitem:ab1f102e6347b0cc8c49d525964d7c996"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#ab1f102e6347b0cc8c49d525964d7c996">POLARSSL_ERR_DHM_BAD_INPUT_DATA</a>   -0x3080</td></tr>
<tr class="memdesc:ab1f102e6347b0cc8c49d525964d7c996"><td class="mdescLeft"> </td><td class="mdescRight">Bad input parameters to function. <a href="#ab1f102e6347b0cc8c49d525964d7c996">More...</a><br/></td></tr>
<tr class="separator:ab1f102e6347b0cc8c49d525964d7c996"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1cf5b743957392157fefae2d1ceef39f"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a1cf5b743957392157fefae2d1ceef39f">POLARSSL_ERR_DHM_READ_PARAMS_FAILED</a>   -0x3100</td></tr>
<tr class="memdesc:a1cf5b743957392157fefae2d1ceef39f"><td class="mdescLeft"> </td><td class="mdescRight">Reading of the DHM parameters failed. <a href="#a1cf5b743957392157fefae2d1ceef39f">More...</a><br/></td></tr>
<tr class="separator:a1cf5b743957392157fefae2d1ceef39f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3e27f309924f0bf267c7de08bc6125b5"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a3e27f309924f0bf267c7de08bc6125b5">POLARSSL_ERR_DHM_MAKE_PARAMS_FAILED</a>   -0x3180</td></tr>
<tr class="memdesc:a3e27f309924f0bf267c7de08bc6125b5"><td class="mdescLeft"> </td><td class="mdescRight">Making of the DHM parameters failed. <a href="#a3e27f309924f0bf267c7de08bc6125b5">More...</a><br/></td></tr>
<tr class="separator:a3e27f309924f0bf267c7de08bc6125b5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a54e3f55659f632b8cce3159f113ee009"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a54e3f55659f632b8cce3159f113ee009">POLARSSL_ERR_DHM_READ_PUBLIC_FAILED</a>   -0x3200</td></tr>
<tr class="memdesc:a54e3f55659f632b8cce3159f113ee009"><td class="mdescLeft"> </td><td class="mdescRight">Reading of the public values failed. <a href="#a54e3f55659f632b8cce3159f113ee009">More...</a><br/></td></tr>
<tr class="separator:a54e3f55659f632b8cce3159f113ee009"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a29ed83b8442b715e03990f438d4bce98"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a29ed83b8442b715e03990f438d4bce98">POLARSSL_ERR_DHM_MAKE_PUBLIC_FAILED</a>   -0x3280</td></tr>
<tr class="memdesc:a29ed83b8442b715e03990f438d4bce98"><td class="mdescLeft"> </td><td class="mdescRight">Making of the public value failed. <a href="#a29ed83b8442b715e03990f438d4bce98">More...</a><br/></td></tr>
<tr class="separator:a29ed83b8442b715e03990f438d4bce98"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab4f6609fa29638c85e6d401954d02845"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#ab4f6609fa29638c85e6d401954d02845">POLARSSL_ERR_DHM_CALC_SECRET_FAILED</a>   -0x3300</td></tr>
<tr class="memdesc:ab4f6609fa29638c85e6d401954d02845"><td class="mdescLeft"> </td><td class="mdescRight">Calculation of the DHM secret failed. <a href="#ab4f6609fa29638c85e6d401954d02845">More...</a><br/></td></tr>
<tr class="separator:ab4f6609fa29638c85e6d401954d02845"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:abd146afeae00caff8a5619ae884149db"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#abd146afeae00caff8a5619ae884149db">POLARSSL_ERR_DHM_INVALID_FORMAT</a>   -0x3380</td></tr>
<tr class="memdesc:abd146afeae00caff8a5619ae884149db"><td class="mdescLeft"> </td><td class="mdescRight">The ASN.1 data is not formatted correctly. <a href="#abd146afeae00caff8a5619ae884149db">More...</a><br/></td></tr>
<tr class="separator:abd146afeae00caff8a5619ae884149db"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac3d150ca9ea33ba5355738f56907907c"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#ac3d150ca9ea33ba5355738f56907907c">POLARSSL_ERR_DHM_MALLOC_FAILED</a>   -0x3400</td></tr>
<tr class="memdesc:ac3d150ca9ea33ba5355738f56907907c"><td class="mdescLeft"> </td><td class="mdescRight">Allocation of memory failed. <a href="#ac3d150ca9ea33ba5355738f56907907c">More...</a><br/></td></tr>
<tr class="separator:ac3d150ca9ea33ba5355738f56907907c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aebb6ccd367ebc3306b71fd214530c2c2"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#aebb6ccd367ebc3306b71fd214530c2c2">POLARSSL_ERR_DHM_FILE_IO_ERROR</a>   -0x3480</td></tr>
<tr class="memdesc:aebb6ccd367ebc3306b71fd214530c2c2"><td class="mdescLeft"> </td><td class="mdescRight">Read/write of file failed. <a href="#aebb6ccd367ebc3306b71fd214530c2c2">More...</a><br/></td></tr>
<tr class="separator:aebb6ccd367ebc3306b71fd214530c2c2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7920b16e2d34a964afb57ae5294f7559"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a7920b16e2d34a964afb57ae5294f7559">POLARSSL_DHM_RFC2409_MODP_1024_P</a></td></tr>
<tr class="memdesc:a7920b16e2d34a964afb57ae5294f7559"><td class="mdescLeft"> </td><td class="mdescRight">RFC 2409 defines a number of standardized Diffie-Hellman groups that can be used. <a href="#a7920b16e2d34a964afb57ae5294f7559">More...</a><br/></td></tr>
<tr class="separator:a7920b16e2d34a964afb57ae5294f7559"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a390dad70476de288d7210be9b626b3b6"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a390dad70476de288d7210be9b626b3b6">POLARSSL_DHM_RFC2409_MODP_1024_G</a>   "02"</td></tr>
<tr class="separator:a390dad70476de288d7210be9b626b3b6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a35fc616956ba7661e73d34785f960b63"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a35fc616956ba7661e73d34785f960b63">POLARSSL_DHM_RFC3526_MODP_2048_P</a></td></tr>
<tr class="separator:a35fc616956ba7661e73d34785f960b63"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aeeb38830e9a14b96a6a5d318fe11f3a0"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#aeeb38830e9a14b96a6a5d318fe11f3a0">POLARSSL_DHM_RFC3526_MODP_2048_G</a>   "02"</td></tr>
<tr class="separator:aeeb38830e9a14b96a6a5d318fe11f3a0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad4487a84f22e7d49270ac6c0f07dfdee"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#ad4487a84f22e7d49270ac6c0f07dfdee">POLARSSL_DHM_RFC3526_MODP_3072_P</a></td></tr>
<tr class="separator:ad4487a84f22e7d49270ac6c0f07dfdee"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0d4454178f836ee4e18265203d9b8f7e"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a0d4454178f836ee4e18265203d9b8f7e">POLARSSL_DHM_RFC3526_MODP_3072_G</a>   "02"</td></tr>
<tr class="separator:a0d4454178f836ee4e18265203d9b8f7e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0248d4be4b217add62ee524094320f26"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a0248d4be4b217add62ee524094320f26">POLARSSL_DHM_RFC5114_MODP_1024_P</a></td></tr>
<tr class="separator:a0248d4be4b217add62ee524094320f26"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aee8dd3aaa038de9299e4228c461dd7d0"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#aee8dd3aaa038de9299e4228c461dd7d0">POLARSSL_DHM_RFC5114_MODP_1024_G</a></td></tr>
<tr class="separator:aee8dd3aaa038de9299e4228c461dd7d0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad57332be7b632e9ddd678a4cc0750b91"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#ad57332be7b632e9ddd678a4cc0750b91">POLARSSL_DHM_RFC5114_MODP_2048_P</a></td></tr>
<tr class="separator:ad57332be7b632e9ddd678a4cc0750b91"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a404a263e2f02952ab26ce71de5770d86"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a404a263e2f02952ab26ce71de5770d86">POLARSSL_DHM_RFC5114_MODP_2048_G</a></td></tr>
<tr class="separator:a404a263e2f02952ab26ce71de5770d86"><td class="memSeparator" colspan="2"> </td></tr>
</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:aa739ef8a5b198350fb3a7b9b7a162c54"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#aa739ef8a5b198350fb3a7b9b7a162c54">dhm_init</a> (<a class="el" href="structdhm__context.html">dhm_context</a> *ctx)</td></tr>
<tr class="memdesc:aa739ef8a5b198350fb3a7b9b7a162c54"><td class="mdescLeft"> </td><td class="mdescRight">Initialize DHM context. <a href="#aa739ef8a5b198350fb3a7b9b7a162c54">More...</a><br/></td></tr>
<tr class="separator:aa739ef8a5b198350fb3a7b9b7a162c54"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6c77d265f13f7333802b93172a6833aa"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a6c77d265f13f7333802b93172a6833aa">dhm_read_params</a> (<a class="el" href="structdhm__context.html">dhm_context</a> *ctx, unsigned char **p, const unsigned char *end)</td></tr>
<tr class="memdesc:a6c77d265f13f7333802b93172a6833aa"><td class="mdescLeft"> </td><td class="mdescRight">Parse the ServerKeyExchange parameters. <a href="#a6c77d265f13f7333802b93172a6833aa">More...</a><br/></td></tr>
<tr class="separator:a6c77d265f13f7333802b93172a6833aa"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a23357e363671873e068cd7c206a35d92"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a23357e363671873e068cd7c206a35d92">dhm_make_params</a> (<a class="el" href="structdhm__context.html">dhm_context</a> *ctx, int x_size, unsigned char *output, size_t *olen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)</td></tr>
<tr class="memdesc:a23357e363671873e068cd7c206a35d92"><td class="mdescLeft"> </td><td class="mdescRight">Setup and write the ServerKeyExchange parameters. <a href="#a23357e363671873e068cd7c206a35d92">More...</a><br/></td></tr>
<tr class="separator:a23357e363671873e068cd7c206a35d92"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a04a6ae0b94659777f031820cb2eb1b5d"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a04a6ae0b94659777f031820cb2eb1b5d">dhm_read_public</a> (<a class="el" href="structdhm__context.html">dhm_context</a> *ctx, const unsigned char *input, size_t ilen)</td></tr>
<tr class="memdesc:a04a6ae0b94659777f031820cb2eb1b5d"><td class="mdescLeft"> </td><td class="mdescRight">Import the peer's public value G^Y. <a href="#a04a6ae0b94659777f031820cb2eb1b5d">More...</a><br/></td></tr>
<tr class="separator:a04a6ae0b94659777f031820cb2eb1b5d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1504ee72125df9a4f8ba4f732d231d31"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a1504ee72125df9a4f8ba4f732d231d31">dhm_make_public</a> (<a class="el" href="structdhm__context.html">dhm_context</a> *ctx, int x_size, unsigned char *output, size_t olen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)</td></tr>
<tr class="memdesc:a1504ee72125df9a4f8ba4f732d231d31"><td class="mdescLeft"> </td><td class="mdescRight">Create own private value X and export G^X. <a href="#a1504ee72125df9a4f8ba4f732d231d31">More...</a><br/></td></tr>
<tr class="separator:a1504ee72125df9a4f8ba4f732d231d31"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4a0a7ae7821c1925baa33c2797052f30"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a4a0a7ae7821c1925baa33c2797052f30">dhm_calc_secret</a> (<a class="el" href="structdhm__context.html">dhm_context</a> *ctx, unsigned char *output, size_t *olen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)</td></tr>
<tr class="memdesc:a4a0a7ae7821c1925baa33c2797052f30"><td class="mdescLeft"> </td><td class="mdescRight">Derive and export the shared secret (G^Y)^X mod P. <a href="#a4a0a7ae7821c1925baa33c2797052f30">More...</a><br/></td></tr>
<tr class="separator:a4a0a7ae7821c1925baa33c2797052f30"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ada3c785f695c3d513177dd45d3c6f254"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#ada3c785f695c3d513177dd45d3c6f254">dhm_free</a> (<a class="el" href="structdhm__context.html">dhm_context</a> *ctx)</td></tr>
<tr class="memdesc:ada3c785f695c3d513177dd45d3c6f254"><td class="mdescLeft"> </td><td class="mdescRight">Free and clear the components of a DHM key. <a href="#ada3c785f695c3d513177dd45d3c6f254">More...</a><br/></td></tr>
<tr class="separator:ada3c785f695c3d513177dd45d3c6f254"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga99888623ed4f805c0e58b705a534c8e5"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__x509__module.html#ga99888623ed4f805c0e58b705a534c8e5">dhm_parse_dhm</a> (<a class="el" href="structdhm__context.html">dhm_context</a> *dhm, const unsigned char *dhmin, size_t dhminlen)</td></tr>
<tr class="memdesc:ga99888623ed4f805c0e58b705a534c8e5"><td class="mdescLeft"> </td><td class="mdescRight">Parse DHM parameters. <a href="group__x509__module.html#ga99888623ed4f805c0e58b705a534c8e5">More...</a><br/></td></tr>
<tr class="separator:ga99888623ed4f805c0e58b705a534c8e5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gab51d126333172f165a67ac6f5dd2a910"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__x509__module.html#gab51d126333172f165a67ac6f5dd2a910">dhm_parse_dhmfile</a> (<a class="el" href="structdhm__context.html">dhm_context</a> *dhm, const char *path)</td></tr>
<tr class="memdesc:gab51d126333172f165a67ac6f5dd2a910"><td class="mdescLeft"> </td><td class="mdescRight">Load and parse DHM parameters. <a href="group__x509__module.html#gab51d126333172f165a67ac6f5dd2a910">More...</a><br/></td></tr>
<tr class="separator:gab51d126333172f165a67ac6f5dd2a910"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a61cc4f6b8b132f50e34b6f42b74d08fa"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="dhm_8h.html#a61cc4f6b8b132f50e34b6f42b74d08fa">dhm_self_test</a> (int verbose)</td></tr>
<tr class="memdesc:a61cc4f6b8b132f50e34b6f42b74d08fa"><td class="mdescLeft"> </td><td class="mdescRight">Checkup routine. <a href="#a61cc4f6b8b132f50e34b6f42b74d08fa">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>Diffie-Hellman-Merkle key exchange. </p>
<p>Copyright (C) 2006-2013, 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="dhm_8h_source.html">dhm.h</a>.</p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a class="anchor" id="a390dad70476de288d7210be9b626b3b6"></a>
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<td class="memname">#define POLARSSL_DHM_RFC2409_MODP_1024_G   "02"</td>
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<p>Definition at line <a class="el" href="dhm_8h_source.html#l00070">70</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_DHM_RFC2409_MODP_1024_P</td>
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<b>Value:</b><div class="fragment"><div class="line"><span class="stringliteral">"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"</span> \</div>
<div class="line"> <span class="stringliteral">"29024E088A67CC74020BBEA63B139B22514A08798E3404DD"</span> \</div>
<div class="line"> <span class="stringliteral">"EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"</span> \</div>
<div class="line"> <span class="stringliteral">"E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"</span> \</div>
<div class="line"> <span class="stringliteral">"EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381"</span> \</div>
<div class="line"> <span class="stringliteral">"FFFFFFFFFFFFFFFF"</span></div>
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<p>RFC 2409 defines a number of standardized Diffie-Hellman groups that can be used. </p>
<p>RFC 3526 defines a number of standardized Diffie-Hellman groups for IKE. RFC 5114 defines a number of standardized Diffie-Hellman groups that can be used.</p>
<p>Some are included here for convenience.</p>
<p>Included are: RFC 2409 6.2. 1024-bit MODP Group (Second Oakley Group) RFC 3526 3. 2048-bit MODP Group RFC 3526 4. 3072-bit MODP Group RFC 5114 2.1. 1024-bit MODP Group with 160-bit Prime Order Subgroup RFC 5114 2.2. 2048-bit MODP Group with 224-bit Prime Order Subgroup </p>
<p>Definition at line <a class="el" href="dhm_8h_source.html#l00062">62</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_DHM_RFC3526_MODP_2048_G   "02"</td>
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<p>Definition at line <a class="el" href="dhm_8h_source.html#l00085">85</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_DHM_RFC3526_MODP_2048_P</td>
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<b>Value:</b><div class="fragment"><div class="line"><span class="stringliteral">"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"</span> \</div>
<div class="line"> <span class="stringliteral">"29024E088A67CC74020BBEA63B139B22514A08798E3404DD"</span> \</div>
<div class="line"> <span class="stringliteral">"EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"</span> \</div>
<div class="line"> <span class="stringliteral">"E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"</span> \</div>
<div class="line"> <span class="stringliteral">"EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"</span> \</div>
<div class="line"> <span class="stringliteral">"C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"</span> \</div>
<div class="line"> <span class="stringliteral">"83655D23DCA3AD961C62F356208552BB9ED529077096966D"</span> \</div>
<div class="line"> <span class="stringliteral">"670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"</span> \</div>
<div class="line"> <span class="stringliteral">"E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"</span> \</div>
<div class="line"> <span class="stringliteral">"DE2BCBF6955817183995497CEA956AE515D2261898FA0510"</span> \</div>
<div class="line"> <span class="stringliteral">"15728E5A8AACAA68FFFFFFFFFFFFFFFF"</span></div>
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<p>Definition at line <a class="el" href="dhm_8h_source.html#l00072">72</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<a class="anchor" id="a0d4454178f836ee4e18265203d9b8f7e"></a>
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<td class="memname">#define POLARSSL_DHM_RFC3526_MODP_3072_G   "02"</td>
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<p>Definition at line <a class="el" href="dhm_8h_source.html#l00105">105</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_DHM_RFC3526_MODP_3072_P</td>
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<b>Value:</b><div class="fragment"><div class="line"><span class="stringliteral">"FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"</span> \</div>
<div class="line"> <span class="stringliteral">"29024E088A67CC74020BBEA63B139B22514A08798E3404DD"</span> \</div>
<div class="line"> <span class="stringliteral">"EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"</span> \</div>
<div class="line"> <span class="stringliteral">"E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"</span> \</div>
<div class="line"> <span class="stringliteral">"EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"</span> \</div>
<div class="line"> <span class="stringliteral">"C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"</span> \</div>
<div class="line"> <span class="stringliteral">"83655D23DCA3AD961C62F356208552BB9ED529077096966D"</span> \</div>
<div class="line"> <span class="stringliteral">"670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"</span> \</div>
<div class="line"> <span class="stringliteral">"E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"</span> \</div>
<div class="line"> <span class="stringliteral">"DE2BCBF6955817183995497CEA956AE515D2261898FA0510"</span> \</div>
<div class="line"> <span class="stringliteral">"15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64"</span> \</div>
<div class="line"> <span class="stringliteral">"ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7"</span> \</div>
<div class="line"> <span class="stringliteral">"ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B"</span> \</div>
<div class="line"> <span class="stringliteral">"F12FFA06D98A0864D87602733EC86A64521F2B18177B200C"</span> \</div>
<div class="line"> <span class="stringliteral">"BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31"</span> \</div>
<div class="line"> <span class="stringliteral">"43DB5BFCE0FD108E4B82D120A93AD2CAFFFFFFFFFFFFFFFF"</span></div>
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<p>Definition at line <a class="el" href="dhm_8h_source.html#l00087">87</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<b>Value:</b><div class="fragment"><div class="line"><span class="stringliteral">"A4D1CBD5C3FD34126765A442EFB99905F8104DD258AC507F"</span> \</div>
<div class="line"> <span class="stringliteral">"D6406CFF14266D31266FEA1E5C41564B777E690F5504F213"</span> \</div>
<div class="line"> <span class="stringliteral">"160217B4B01B886A5E91547F9E2749F4D7FBD7D3B9A92EE1"</span> \</div>
<div class="line"> <span class="stringliteral">"909D0D2263F80A76A6A24C087A091F531DBF0A0169B6A28A"</span> \</div>
<div class="line"> <span class="stringliteral">"D662A4D18E73AFA32D779D5918D08BC8858F4DCEF97C2A24"</span> \</div>
<div class="line"> <span class="stringliteral">"855E6EEB22B3B2E5"</span></div>
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<p>Definition at line <a class="el" href="dhm_8h_source.html#l00115">115</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<b>Value:</b><div class="fragment"><div class="line"><span class="stringliteral">"B10B8F96A080E01DDE92DE5EAE5D54EC52C99FBCFB06A3C6"</span> \</div>
<div class="line"> <span class="stringliteral">"9A6A9DCA52D23B616073E28675A23D189838EF1E2EE652C0"</span> \</div>
<div class="line"> <span class="stringliteral">"13ECB4AEA906112324975C3CD49B83BFACCBDD7D90C4BD70"</span> \</div>
<div class="line"> <span class="stringliteral">"98488E9C219A73724EFFD6FAE5644738FAA31A4FF55BCCC0"</span> \</div>
<div class="line"> <span class="stringliteral">"A151AF5F0DC8B4BD45BF37DF365C1A65E68CFDA76D4DA708"</span> \</div>
<div class="line"> <span class="stringliteral">"DF1FB2BC2E4A4371"</span></div>
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<p>Definition at line <a class="el" href="dhm_8h_source.html#l00107">107</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_DHM_RFC5114_MODP_2048_G</td>
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<b>Value:</b><div class="fragment"><div class="line"><span class="stringliteral">"AC4032EF4F2D9AE39DF30B5C8FFDAC506CDEBE7B89998CAF"</span>\</div>
<div class="line"> <span class="stringliteral">"74866A08CFE4FFE3A6824A4E10B9A6F0DD921F01A70C4AFA"</span>\</div>
<div class="line"> <span class="stringliteral">"AB739D7700C29F52C57DB17C620A8652BE5E9001A8D66AD7"</span>\</div>
<div class="line"> <span class="stringliteral">"C17669101999024AF4D027275AC1348BB8A762D0521BC98A"</span>\</div>
<div class="line"> <span class="stringliteral">"E247150422EA1ED409939D54DA7460CDB5F6C6B250717CBE"</span>\</div>
<div class="line"> <span class="stringliteral">"F180EB34118E98D119529A45D6F834566E3025E316A330EF"</span>\</div>
<div class="line"> <span class="stringliteral">"BB77A86F0C1AB15B051AE3D428C8F8ACB70A8137150B8EEB"</span>\</div>
<div class="line"> <span class="stringliteral">"10E183EDD19963DDD9E263E4770589EF6AA21E7F5F2FF381"</span>\</div>
<div class="line"> <span class="stringliteral">"B539CCE3409D13CD566AFBB48D6C019181E1BCFE94B30269"</span>\</div>
<div class="line"> <span class="stringliteral">"EDFE72FE9B6AA4BD7B5A0F1C71CFFF4C19C418E1F6EC0179"</span>\</div>
<div class="line"> <span class="stringliteral">"81BC087F2A7065B384B890D3191F2BFA"</span></div>
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<p>Definition at line <a class="el" href="dhm_8h_source.html#l00136">136</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<b>Value:</b><div class="fragment"><div class="line"><span class="stringliteral">"AD107E1E9123A9D0D660FAA79559C51FA20D64E5683B9FD1"</span> \</div>
<div class="line"> <span class="stringliteral">"B54B1597B61D0A75E6FA141DF95A56DBAF9A3C407BA1DF15"</span> \</div>
<div class="line"> <span class="stringliteral">"EB3D688A309C180E1DE6B85A1274A0A66D3F8152AD6AC212"</span> \</div>
<div class="line"> <span class="stringliteral">"9037C9EDEFDA4DF8D91E8FEF55B7394B7AD5B7D0B6C12207"</span> \</div>
<div class="line"> <span class="stringliteral">"C9F98D11ED34DBF6C6BA0B2C8BBC27BE6A00E0A0B9C49708"</span> \</div>
<div class="line"> <span class="stringliteral">"B3BF8A317091883681286130BC8985DB1602E714415D9330"</span> \</div>
<div class="line"> <span class="stringliteral">"278273C7DE31EFDC7310F7121FD5A07415987D9ADC0A486D"</span> \</div>
<div class="line"> <span class="stringliteral">"CDF93ACC44328387315D75E198C641A480CD86A1B9E587E8"</span> \</div>
<div class="line"> <span class="stringliteral">"BE60E69CC928B2B9C52172E413042E9B23F10B0E16E79763"</span> \</div>
<div class="line"> <span class="stringliteral">"C9B53DCF4BA80A29E3FB73C16B8E75B97EF363E2FFA31F71"</span> \</div>
<div class="line"> <span class="stringliteral">"CF9DE5384E71B81C0AC4DFFE0C10E64F"</span></div>
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<p>Definition at line <a class="el" href="dhm_8h_source.html#l00123">123</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_ERR_DHM_BAD_INPUT_DATA   -0x3080</td>
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<p>Bad input parameters to function. </p>
<p>Definition at line <a class="el" href="dhm_8h_source.html#l00035">35</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_ERR_DHM_CALC_SECRET_FAILED   -0x3300</td>
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<p>Calculation of the DHM secret failed. </p>
<p>Definition at line <a class="el" href="dhm_8h_source.html#l00040">40</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_ERR_DHM_FILE_IO_ERROR   -0x3480</td>
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<p>Read/write of file failed. </p>
<p>Definition at line <a class="el" href="dhm_8h_source.html#l00043">43</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_ERR_DHM_INVALID_FORMAT   -0x3380</td>
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<p>The ASN.1 data is not formatted correctly. </p>
<p>Definition at line <a class="el" href="dhm_8h_source.html#l00041">41</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_ERR_DHM_MAKE_PARAMS_FAILED   -0x3180</td>
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<p>Making of the DHM parameters failed. </p>
<p>Definition at line <a class="el" href="dhm_8h_source.html#l00037">37</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_ERR_DHM_MAKE_PUBLIC_FAILED   -0x3280</td>
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<p>Making of the public value failed. </p>
<p>Definition at line <a class="el" href="dhm_8h_source.html#l00039">39</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_ERR_DHM_MALLOC_FAILED   -0x3400</td>
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<p>Allocation of memory failed. </p>
<p>Definition at line <a class="el" href="dhm_8h_source.html#l00042">42</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_ERR_DHM_READ_PARAMS_FAILED   -0x3100</td>
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<p>Reading of the DHM parameters failed. </p>
<p>Definition at line <a class="el" href="dhm_8h_source.html#l00036">36</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<td class="memname">#define POLARSSL_ERR_DHM_READ_PUBLIC_FAILED   -0x3200</td>
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<p>Reading of the public values failed. </p>
<p>Definition at line <a class="el" href="dhm_8h_source.html#l00038">38</a> of file <a class="el" href="dhm_8h_source.html">dhm.h</a>.</p>
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<h2 class="groupheader">Function Documentation</h2>
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<td class="memname">int dhm_calc_secret </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structdhm__context.html">dhm_context</a> * </td>
<td class="paramname"><em>ctx</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 class="paramkey"></td>
<td></td>
<td class="paramtype">size_t * </td>
<td class="paramname"><em>olen</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int(*)(void *, unsigned char *, size_t) </td>
<td class="paramname"><em>f_rng</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>p_rng</em> </td>
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<td>)</td>
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<p>Derive and export the shared secret (G^Y)^X mod P. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DHM context </td></tr>
<tr><td class="paramname">output</td><td>destination buffer </td></tr>
<tr><td class="paramname">olen</td><td>on entry, must hold the size of the destination buffer on exit, holds the actual number of bytes written </td></tr>
<tr><td class="paramname">f_rng</td><td>RNG function, for blinding purposes </td></tr>
<tr><td class="paramname">p_rng</td><td>RNG parameter</td></tr>
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</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful, or an POLARSSL_ERR_DHM_XXX error code</dd></dl>
<dl class="section note"><dt>Note</dt><dd>If non-NULL, f_rng is used to blind the input as countermeasure against timing attacks. Blinding is automatically used if and only if our secret value X is re-used and costs nothing otherwise, so it is recommended to always pass a non-NULL f_rng argument. </dd></dl>
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<td class="memname">void dhm_free </td>
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<td class="paramtype"><a class="el" href="structdhm__context.html">dhm_context</a> * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
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<p>Free and clear the components of a DHM key. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DHM context to free and clear </td></tr>
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</dd>
</dl>
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<td class="memname">void dhm_init </td>
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<td class="paramtype"><a class="el" href="structdhm__context.html">dhm_context</a> * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
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<p>Initialize DHM context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DHM context to be initialized </td></tr>
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</dd>
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<td class="memname">int dhm_make_params </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structdhm__context.html">dhm_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>x_size</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 class="paramkey"></td>
<td></td>
<td class="paramtype">size_t * </td>
<td class="paramname"><em>olen</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int(*)(void *, unsigned char *, size_t) </td>
<td class="paramname"><em>f_rng</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>p_rng</em> </td>
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<td>)</td>
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<p>Setup and write the ServerKeyExchange parameters. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DHM context </td></tr>
<tr><td class="paramname">x_size</td><td>private value size in bytes </td></tr>
<tr><td class="paramname">output</td><td>destination buffer </td></tr>
<tr><td class="paramname">olen</td><td>number of chars written </td></tr>
<tr><td class="paramname">f_rng</td><td>RNG function </td></tr>
<tr><td class="paramname">p_rng</td><td>RNG parameter</td></tr>
</table>
</dd>
</dl>
<dl class="section note"><dt>Note</dt><dd>This function assumes that ctx->P and ctx->G have already been properly set (for example using mpi_read_string or mpi_read_binary).</dd></dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful, or an POLARSSL_ERR_DHM_XXX error code </dd></dl>
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<td class="memname">int dhm_make_public </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structdhm__context.html">dhm_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>x_size</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 class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>olen</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int(*)(void *, unsigned char *, size_t) </td>
<td class="paramname"><em>f_rng</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>p_rng</em> </td>
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<td>)</td>
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<p>Create own private value X and export G^X. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DHM context </td></tr>
<tr><td class="paramname">x_size</td><td>private value size in bytes </td></tr>
<tr><td class="paramname">output</td><td>destination buffer </td></tr>
<tr><td class="paramname">olen</td><td>must be equal to ctx->P.len </td></tr>
<tr><td class="paramname">f_rng</td><td>RNG function </td></tr>
<tr><td class="paramname">p_rng</td><td>RNG parameter</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful, or an POLARSSL_ERR_DHM_XXX error code </dd></dl>
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<td class="memname">int dhm_read_params </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structdhm__context.html">dhm_context</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char * </td>
<td class="paramname"><em>end</em> </td>
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<td>)</td>
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<p>Parse the ServerKeyExchange parameters. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DHM context </td></tr>
<tr><td class="paramname">p</td><td>&(start of input buffer) </td></tr>
<tr><td class="paramname">end</td><td>end of buffer</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful, or an POLARSSL_ERR_DHM_XXX error code </dd></dl>
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<td class="memname">int dhm_read_public </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structdhm__context.html">dhm_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>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>ilen</em> </td>
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<td>)</td>
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<p>Import the peer's public value G^Y. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>DHM context </td></tr>
<tr><td class="paramname">input</td><td>input buffer </td></tr>
<tr><td class="paramname">ilen</td><td>size of buffer</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>0 if successful, or an POLARSSL_ERR_DHM_XXX error code </dd></dl>
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<td class="memname">int dhm_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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