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<p>ASN.1 buffer writing functionality.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include "<a class="el" href="asn1_8h_source.html">asn1.h</a>"</code><br/>
</div><div class="textblock"><div class="dynheader">
Include dependency graph for asn1write.h:</div>
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<div class="center"><img src="asn1write_8h__incl.png" border="0" usemap="#asn1write_8h" alt=""/></div>
<map name="asn1write_8h" id="asn1write_8h">
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<p><a href="asn1write_8h_source.html">Go to the source code of this file.</a></p>
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Macros</h2></td></tr>
<tr class="memitem:a31a94e90950151e3f9b47e72bad09c20"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#a31a94e90950151e3f9b47e72bad09c20">ASN1_CHK_ADD</a>(g, f)</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:a4fc66d40e537079c762ab2df2c2ba3c8"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#a4fc66d40e537079c762ab2df2c2ba3c8">asn1_write_len</a> (unsigned char **p, unsigned char *start, size_t len)</td></tr>
<tr class="memdesc:a4fc66d40e537079c762ab2df2c2ba3c8"><td class="mdescLeft"> </td><td class="mdescRight">Write a length field in ASN.1 format Note: function works backwards in data buffer. <a href="#a4fc66d40e537079c762ab2df2c2ba3c8">More...</a><br/></td></tr>
<tr class="separator:a4fc66d40e537079c762ab2df2c2ba3c8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a625cc3f39febf33574b80d767d56be7a"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#a625cc3f39febf33574b80d767d56be7a">asn1_write_tag</a> (unsigned char **p, unsigned char *start, unsigned char tag)</td></tr>
<tr class="memdesc:a625cc3f39febf33574b80d767d56be7a"><td class="mdescLeft"> </td><td class="mdescRight">Write a ASN.1 tag in ASN.1 format Note: function works backwards in data buffer. <a href="#a625cc3f39febf33574b80d767d56be7a">More...</a><br/></td></tr>
<tr class="separator:a625cc3f39febf33574b80d767d56be7a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a86f200c4ad3a5621ddb83ea90ef131ee"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#a86f200c4ad3a5621ddb83ea90ef131ee">asn1_write_raw_buffer</a> (unsigned char **p, unsigned char *start, const unsigned char *buf, size_t size)</td></tr>
<tr class="memdesc:a86f200c4ad3a5621ddb83ea90ef131ee"><td class="mdescLeft"> </td><td class="mdescRight">Write raw buffer data Note: function works backwards in data buffer. <a href="#a86f200c4ad3a5621ddb83ea90ef131ee">More...</a><br/></td></tr>
<tr class="separator:a86f200c4ad3a5621ddb83ea90ef131ee"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:acfc669194aa6ee652f09891f70827bc2"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#acfc669194aa6ee652f09891f70827bc2">asn1_write_mpi</a> (unsigned char **p, unsigned char *start, <a class="el" href="structmpi.html">mpi</a> *X)</td></tr>
<tr class="memdesc:acfc669194aa6ee652f09891f70827bc2"><td class="mdescLeft"> </td><td class="mdescRight">Write a big number (ASN1_INTEGER) in ASN.1 format Note: function works backwards in data buffer. <a href="#acfc669194aa6ee652f09891f70827bc2">More...</a><br/></td></tr>
<tr class="separator:acfc669194aa6ee652f09891f70827bc2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab504799310d8cbd8deb5e6757b314309"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#ab504799310d8cbd8deb5e6757b314309">asn1_write_null</a> (unsigned char **p, unsigned char *start)</td></tr>
<tr class="memdesc:ab504799310d8cbd8deb5e6757b314309"><td class="mdescLeft"> </td><td class="mdescRight">Write a NULL tag (ASN1_NULL) with zero data in ASN.1 format Note: function works backwards in data buffer. <a href="#ab504799310d8cbd8deb5e6757b314309">More...</a><br/></td></tr>
<tr class="separator:ab504799310d8cbd8deb5e6757b314309"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a25311e847f76c558886ae348b5c5f5a3"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#a25311e847f76c558886ae348b5c5f5a3">asn1_write_oid</a> (unsigned char **p, unsigned char *start, const char *oid, size_t oid_len)</td></tr>
<tr class="memdesc:a25311e847f76c558886ae348b5c5f5a3"><td class="mdescLeft"> </td><td class="mdescRight">Write an OID tag (ASN1_OID) and data in ASN.1 format Note: function works backwards in data buffer. <a href="#a25311e847f76c558886ae348b5c5f5a3">More...</a><br/></td></tr>
<tr class="separator:a25311e847f76c558886ae348b5c5f5a3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a084a4d4cbc73cf5bacbbc59ebf386852"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#a084a4d4cbc73cf5bacbbc59ebf386852">asn1_write_algorithm_identifier</a> (unsigned char **p, unsigned char *start, const char *oid, size_t oid_len, size_t par_len)</td></tr>
<tr class="memdesc:a084a4d4cbc73cf5bacbbc59ebf386852"><td class="mdescLeft"> </td><td class="mdescRight">Write an AlgorithmIdentifier sequence in ASN.1 format Note: function works backwards in data buffer. <a href="#a084a4d4cbc73cf5bacbbc59ebf386852">More...</a><br/></td></tr>
<tr class="separator:a084a4d4cbc73cf5bacbbc59ebf386852"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a69561a15de1f39018896d564827613f5"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#a69561a15de1f39018896d564827613f5">asn1_write_bool</a> (unsigned char **p, unsigned char *start, int boolean)</td></tr>
<tr class="memdesc:a69561a15de1f39018896d564827613f5"><td class="mdescLeft"> </td><td class="mdescRight">Write a boolean tag (ASN1_BOOLEAN) and value in ASN.1 format Note: function works backwards in data buffer. <a href="#a69561a15de1f39018896d564827613f5">More...</a><br/></td></tr>
<tr class="separator:a69561a15de1f39018896d564827613f5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9450884c817c164769fcb595204c0fd4"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#a9450884c817c164769fcb595204c0fd4">asn1_write_int</a> (unsigned char **p, unsigned char *start, int val)</td></tr>
<tr class="memdesc:a9450884c817c164769fcb595204c0fd4"><td class="mdescLeft"> </td><td class="mdescRight">Write an int tag (ASN1_INTEGER) and value in ASN.1 format Note: function works backwards in data buffer. <a href="#a9450884c817c164769fcb595204c0fd4">More...</a><br/></td></tr>
<tr class="separator:a9450884c817c164769fcb595204c0fd4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a424d4d9569c0566ae74a328611f1c86d"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#a424d4d9569c0566ae74a328611f1c86d">asn1_write_printable_string</a> (unsigned char **p, unsigned char *start, const char *text, size_t text_len)</td></tr>
<tr class="memdesc:a424d4d9569c0566ae74a328611f1c86d"><td class="mdescLeft"> </td><td class="mdescRight">Write a printable string tag (ASN1_PRINTABLE_STRING) and value in ASN.1 format Note: function works backwards in data buffer. <a href="#a424d4d9569c0566ae74a328611f1c86d">More...</a><br/></td></tr>
<tr class="separator:a424d4d9569c0566ae74a328611f1c86d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a121379f3f3a12e0c611c0b2661a96420"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#a121379f3f3a12e0c611c0b2661a96420">asn1_write_ia5_string</a> (unsigned char **p, unsigned char *start, const char *text, size_t text_len)</td></tr>
<tr class="memdesc:a121379f3f3a12e0c611c0b2661a96420"><td class="mdescLeft"> </td><td class="mdescRight">Write an IA5 string tag (ASN1_IA5_STRING) and value in ASN.1 format Note: function works backwards in data buffer. <a href="#a121379f3f3a12e0c611c0b2661a96420">More...</a><br/></td></tr>
<tr class="separator:a121379f3f3a12e0c611c0b2661a96420"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a32f0c627ce06318f9085119607959ee0"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#a32f0c627ce06318f9085119607959ee0">asn1_write_bitstring</a> (unsigned char **p, unsigned char *start, const unsigned char *buf, size_t bits)</td></tr>
<tr class="memdesc:a32f0c627ce06318f9085119607959ee0"><td class="mdescLeft"> </td><td class="mdescRight">Write a bitstring tag (ASN1_BIT_STRING) and value in ASN.1 format Note: function works backwards in data buffer. <a href="#a32f0c627ce06318f9085119607959ee0">More...</a><br/></td></tr>
<tr class="separator:a32f0c627ce06318f9085119607959ee0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ada6481425ccf41593b071885a01745a8"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#ada6481425ccf41593b071885a01745a8">asn1_write_octet_string</a> (unsigned char **p, unsigned char *start, const unsigned char *buf, size_t size)</td></tr>
<tr class="memdesc:ada6481425ccf41593b071885a01745a8"><td class="mdescLeft"> </td><td class="mdescRight">Write an octet string tag (ASN1_OCTET_STRING) and value in ASN.1 format Note: function works backwards in data buffer. <a href="#ada6481425ccf41593b071885a01745a8">More...</a><br/></td></tr>
<tr class="separator:ada6481425ccf41593b071885a01745a8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a41bd37ac6a6ba03875a42109ed6460e7"><td class="memItemLeft" align="right" valign="top"><a class="el" href="asn1_8h.html#a4f35635976d2b59cc08444099ebcbd6a">asn1_named_data</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="asn1write_8h.html#a41bd37ac6a6ba03875a42109ed6460e7">asn1_store_named_data</a> (<a class="el" href="asn1_8h.html#a4f35635976d2b59cc08444099ebcbd6a">asn1_named_data</a> **list, const char *oid, size_t oid_len, const unsigned char *val, size_t val_len)</td></tr>
<tr class="memdesc:a41bd37ac6a6ba03875a42109ed6460e7"><td class="mdescLeft"> </td><td class="mdescRight">Create or find a specific named_data entry for writing in a sequence or list based on the OID. <a href="#a41bd37ac6a6ba03875a42109ed6460e7">More...</a><br/></td></tr>
<tr class="separator:a41bd37ac6a6ba03875a42109ed6460e7"><td class="memSeparator" colspan="2"> </td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>ASN.1 buffer writing functionality. </p>
<p>Copyright (C) 2006-2014, 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="asn1write_8h_source.html">asn1write.h</a>.</p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
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<td class="memname">#define ASN1_CHK_ADD</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">g, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">f </td>
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<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<b>Value:</b><div class="fragment"><div class="line"><span class="keywordflow">do</span> { <span class="keywordflow">if</span>( ( ret = f ) < 0 ) <span class="keywordflow">return</span>( ret ); else \</div>
<div class="line"> g += ret; } <span class="keywordflow">while</span>( 0 )</div>
</div><!-- fragment -->
<p>Definition at line <a class="el" href="asn1write_8h_source.html#l00032">32</a> of file <a class="el" href="asn1write_8h_source.html">asn1write.h</a>.</p>
</div>
</div>
<h2 class="groupheader">Function Documentation</h2>
<a class="anchor" id="a41bd37ac6a6ba03875a42109ed6460e7"></a>
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<td class="memname"><a class="el" href="asn1_8h.html#a4f35635976d2b59cc08444099ebcbd6a">asn1_named_data</a>* asn1_store_named_data </td>
<td>(</td>
<td class="paramtype"><a class="el" href="asn1_8h.html#a4f35635976d2b59cc08444099ebcbd6a">asn1_named_data</a> ** </td>
<td class="paramname"><em>list</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>oid</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>oid_len</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char * </td>
<td class="paramname"><em>val</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>val_len</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
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<p>Create or find a specific named_data entry for writing in a sequence or list based on the OID. </p>
<p>If not already in there, a new entry is added to the head of the list. Warning: Destructive behaviour for the val data!</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">list</td><td>Pointer to the location of the head of the list to seek through (will be updated in case of a new entry) </td></tr>
<tr><td class="paramname">oid</td><td>The OID to look for </td></tr>
<tr><td class="paramname">oid_len</td><td>Size of the OID </td></tr>
<tr><td class="paramname">val</td><td>Data to store (can be NULL if you want to fill it by hand) </td></tr>
<tr><td class="paramname">val_len</td><td>Minimum length of the data buffer needed</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>NULL if if there was a memory allocation error, or a pointer to the new / existing entry. </dd></dl>
</div>
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<td class="memname">int asn1_write_algorithm_identifier </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>oid</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>oid_len</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>par_len</em> </td>
</tr>
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<td>)</td>
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<p>Write an AlgorithmIdentifier sequence in ASN.1 format Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking) </td></tr>
<tr><td class="paramname">oid</td><td>the OID of the algorithm </td></tr>
<tr><td class="paramname">oid_len</td><td>length of the OID </td></tr>
<tr><td class="paramname">par_len</td><td>length of parameters, which must be already written. If 0, NULL parameters are added</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
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<td class="memname">int asn1_write_bitstring </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char * </td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>bits</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Write a bitstring tag (ASN1_BIT_STRING) and value in ASN.1 format Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking) </td></tr>
<tr><td class="paramname">buf</td><td>the bitstring </td></tr>
<tr><td class="paramname">bits</td><td>the total number of bits in the bitstring</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="a69561a15de1f39018896d564827613f5"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int asn1_write_bool </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>boolean</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Write a boolean tag (ASN1_BOOLEAN) and value in ASN.1 format Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking) </td></tr>
<tr><td class="paramname">boolean</td><td>0 or 1</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="a121379f3f3a12e0c611c0b2661a96420"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int asn1_write_ia5_string </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>text</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>text_len</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Write an IA5 string tag (ASN1_IA5_STRING) and value in ASN.1 format Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking) </td></tr>
<tr><td class="paramname">text</td><td>the text to write </td></tr>
<tr><td class="paramname">text_len</td><td>length of the text</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="a9450884c817c164769fcb595204c0fd4"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int asn1_write_int </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>val</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Write an int tag (ASN1_INTEGER) and value in ASN.1 format Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking) </td></tr>
<tr><td class="paramname">val</td><td>the integer value</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="a4fc66d40e537079c762ab2df2c2ba3c8"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int asn1_write_len </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>len</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Write a length field in ASN.1 format Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking) </td></tr>
<tr><td class="paramname">len</td><td>the length to write</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="acfc669194aa6ee652f09891f70827bc2"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int asn1_write_mpi </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structmpi.html">mpi</a> * </td>
<td class="paramname"><em>X</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Write a big number (ASN1_INTEGER) in ASN.1 format Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking) </td></tr>
<tr><td class="paramname">X</td><td>the MPI to write</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="ab504799310d8cbd8deb5e6757b314309"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int asn1_write_null </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Write a NULL tag (ASN1_NULL) with zero data in ASN.1 format Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking)</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="ada6481425ccf41593b071885a01745a8"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int asn1_write_octet_string </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char * </td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>size</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Write an octet string tag (ASN1_OCTET_STRING) and value in ASN.1 format Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking) </td></tr>
<tr><td class="paramname">buf</td><td>data buffer to write </td></tr>
<tr><td class="paramname">size</td><td>length of the data buffer</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="a25311e847f76c558886ae348b5c5f5a3"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int asn1_write_oid </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>oid</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>oid_len</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Write an OID tag (ASN1_OID) and data in ASN.1 format Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking) </td></tr>
<tr><td class="paramname">oid</td><td>the OID to write </td></tr>
<tr><td class="paramname">oid_len</td><td>length of the OID</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="a424d4d9569c0566ae74a328611f1c86d"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int asn1_write_printable_string </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>text</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>text_len</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Write a printable string tag (ASN1_PRINTABLE_STRING) and value in ASN.1 format Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking) </td></tr>
<tr><td class="paramname">text</td><td>the text to write </td></tr>
<tr><td class="paramname">text_len</td><td>length of the text</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="a86f200c4ad3a5621ddb83ea90ef131ee"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int asn1_write_raw_buffer </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const unsigned char * </td>
<td class="paramname"><em>buf</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t </td>
<td class="paramname"><em>size</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Write raw buffer data Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking) </td></tr>
<tr><td class="paramname">buf</td><td>data buffer to write </td></tr>
<tr><td class="paramname">size</td><td>length of the data buffer</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
<a class="anchor" id="a625cc3f39febf33574b80d767d56be7a"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int asn1_write_tag </td>
<td>(</td>
<td class="paramtype">unsigned char ** </td>
<td class="paramname"><em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char * </td>
<td class="paramname"><em>start</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned char </td>
<td class="paramname"><em>tag</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Write a ASN.1 tag in ASN.1 format Note: function works backwards in data buffer. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p</td><td>reference to current position pointer </td></tr>
<tr><td class="paramname">start</td><td>start of the buffer (for bounds-checking) </td></tr>
<tr><td class="paramname">tag</td><td>the tag to write</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the length written or a negative error code </dd></dl>
</div>
</div>
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