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<title>base64</title>
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<h1>
<a name="XMLSEC-BASE64"></a>base64</h1>
<div class="REFNAMEDIV">
<a name="AEN2514"></a><h2>Name</h2>base64 -- Base64 encoding/decoding functions.</div>
<div class="REFSYNOPSISDIV">
<a name="XMLSEC-BASE64.SYNOPSIS"></a><h2>Synopsis</h2>
<pre class="SYNOPSIS">#define             <a href="xmlsec-base64.html#XMLSEC-BASE64-LINESIZE--CAPS">XMLSEC_BASE64_LINESIZE</a>
<font>int</font>                 <a href="xmlsec-base64.html#XMLSECBASE64GETDEFAULTLINESIZE">xmlSecBase64GetDefaultLineSize</a>      (void);
<font>void</font>                <a href="xmlsec-base64.html#XMLSECBASE64SETDEFAULTLINESIZE">xmlSecBase64SetDefaultLineSize</a>      (<font>int</font> columns);
<font>xmlSecBase64CtxPtr</font>  <a href="xmlsec-base64.html#XMLSECBASE64CTXCREATE">xmlSecBase64CtxCreate</a>               (<font>int</font> encode,
                                                         <font>int</font> columns);
<font>void</font>                <a href="xmlsec-base64.html#XMLSECBASE64CTXDESTROY">xmlSecBase64CtxDestroy</a>              (<font>xmlSecBase64CtxPtr</font> ctx);
<font>int</font>                 <a href="xmlsec-base64.html#XMLSECBASE64CTXINITIALIZE">xmlSecBase64CtxInitialize</a>           (<font>xmlSecBase64CtxPtr</font> ctx,
                                                         <font>int</font> encode,
                                                         <font>int</font> columns);
<font>void</font>                <a href="xmlsec-base64.html#XMLSECBASE64CTXFINALIZE">xmlSecBase64CtxFinalize</a>             (<font>xmlSecBase64CtxPtr</font> ctx);
<font>int</font>                 <a href="xmlsec-base64.html#XMLSECBASE64CTXUPDATE">xmlSecBase64CtxUpdate</a>               (<font>xmlSecBase64CtxPtr</font> ctx,
                                                         const <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *in,
                                                         <a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> inSize,
                                                         <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *out,
                                                         <a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> outSize);
<font>int</font>                 <a href="xmlsec-base64.html#XMLSECBASE64CTXFINAL">xmlSecBase64CtxFinal</a>                (<font>xmlSecBase64CtxPtr</font> ctx,
                                                         <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *out,
                                                         <a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> outSize);
<font>xmlChar</font>*            <a href="xmlsec-base64.html#XMLSECBASE64ENCODE">xmlSecBase64Encode</a>                  (const <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *buf,
                                                         <a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> len,
                                                         <font>int</font> columns);
<font>int</font>                 <a href="xmlsec-base64.html#XMLSECBASE64DECODE">xmlSecBase64Decode</a>                  (const <font>xmlChar</font> *str,
                                                         <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *buf,
                                                         <a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> len);</pre>
</div>
<div class="REFSECT1">
<a name="XMLSEC-BASE64.DESCRIPTION"></a><h2>Description</h2>
<p>Base64 encoding/decoding functions.</p>
</div>
<div class="REFSECT1">
<a name="XMLSEC-BASE64.DETAILS"></a><h2>Details</h2>
<div class="REFSECT2">
<a name="XMLSEC-BASE64-LINESIZE--CAPS"></a><h3>XMLSEC_BASE64_LINESIZE</h3>
<pre class="PROGRAMLISTING">#define XMLSEC_BASE64_LINESIZE				64</pre>
<p>The default maximum base64 encoded line size.</p>
<p></p>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBASE64GETDEFAULTLINESIZE"></a><h3>xmlSecBase64GetDefaultLineSize ()</h3>
<pre class="PROGRAMLISTING"><font>int</font>                 xmlSecBase64GetDefaultLineSize      (void);</pre>
<p>Gets the current default line size.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody><tr>
<td align="LEFT" valign="TOP"><a name="AEN2584"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the current default line size.</p></td>
</tr></tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBASE64SETDEFAULTLINESIZE"></a><h3>xmlSecBase64SetDefaultLineSize ()</h3>
<pre class="PROGRAMLISTING"><font>void</font>                xmlSecBase64SetDefaultLineSize      (<font>int</font> columns);</pre>
<p>Sets the current default line size.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody><tr>
<td align="LEFT" valign="TOP"><a name="AEN2599"><span style="white-space: nowrap"><code class="PARAMETER">columns</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> number of columns</p></td>
</tr></tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBASE64CTXCREATE"></a><h3>xmlSecBase64CtxCreate ()</h3>
<pre class="PROGRAMLISTING"><font>xmlSecBase64CtxPtr</font>  xmlSecBase64CtxCreate               (<font>int</font> encode,
                                                         <font>int</font> columns);</pre>
<p>Allocates and initializes new base64 context.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2615"><span style="white-space: nowrap"><code class="PARAMETER">encode</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p>		the encode/decode flag (1 - encode, 0 - decode) </p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2620"><span style="white-space: nowrap"><code class="PARAMETER">columns</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the max line length.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2625"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> a pointer to newly created <gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64Ctx</span></gtkdoclink> structure
or NULL if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBASE64CTXDESTROY"></a><h3>xmlSecBase64CtxDestroy ()</h3>
<pre class="PROGRAMLISTING"><font>void</font>                xmlSecBase64CtxDestroy              (<font>xmlSecBase64CtxPtr</font> ctx);</pre>
<p>Destroys base64 context.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody><tr>
<td align="LEFT" valign="TOP"><a name="AEN2642"><span style="white-space: nowrap"><code class="PARAMETER">ctx</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the pointer to <gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64Ctx</span></gtkdoclink> structure.</p></td>
</tr></tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBASE64CTXINITIALIZE"></a><h3>xmlSecBase64CtxInitialize ()</h3>
<pre class="PROGRAMLISTING"><font>int</font>                 xmlSecBase64CtxInitialize           (<font>xmlSecBase64CtxPtr</font> ctx,
                                                         <font>int</font> encode,
                                                         <font>int</font> columns);</pre>
<p>Initializes new base64 context.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2661"><span style="white-space: nowrap"><code class="PARAMETER">ctx</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p>		the pointer to <gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64Ctx</span></gtkdoclink> structure,</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2668"><span style="white-space: nowrap"><code class="PARAMETER">encode</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p>		the encode/decode flag (1 - encode, 0 - decode) </p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2673"><span style="white-space: nowrap"><code class="PARAMETER">columns</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the max line length.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2678"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 0 on success and a negative value otherwise.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBASE64CTXFINALIZE"></a><h3>xmlSecBase64CtxFinalize ()</h3>
<pre class="PROGRAMLISTING"><font>void</font>                xmlSecBase64CtxFinalize             (<font>xmlSecBase64CtxPtr</font> ctx);</pre>
<p>Frees all the resources allocated by <code class="PARAMETER">ctx</code>.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody><tr>
<td align="LEFT" valign="TOP"><a name="AEN2694"><span style="white-space: nowrap"><code class="PARAMETER">ctx</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p>		the pointer to <gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64Ctx</span></gtkdoclink> structure,</p></td>
</tr></tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBASE64CTXUPDATE"></a><h3>xmlSecBase64CtxUpdate ()</h3>
<pre class="PROGRAMLISTING"><font>int</font>                 xmlSecBase64CtxUpdate               (<font>xmlSecBase64CtxPtr</font> ctx,
                                                         const <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *in,
                                                         <a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> inSize,
                                                         <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *out,
                                                         <a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> outSize);</pre>
<p>Encodes or decodes the next piece of data from input buffer.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2715"><span style="white-space: nowrap"><code class="PARAMETER">ctx</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the pointer to <gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64Ctx</span></gtkdoclink> structure</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2722"><span style="white-space: nowrap"><code class="PARAMETER">in</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p>			the input buffer</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2727"><span style="white-space: nowrap"><code class="PARAMETER">inSize</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the input buffer size</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2732"><span style="white-space: nowrap"><code class="PARAMETER">out</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the output buffer</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2737"><span style="white-space: nowrap"><code class="PARAMETER">outSize</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the output buffer size</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2742"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the number of bytes written to output buffer or 
-1 if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBASE64CTXFINAL"></a><h3>xmlSecBase64CtxFinal ()</h3>
<pre class="PROGRAMLISTING"><font>int</font>                 xmlSecBase64CtxFinal                (<font>xmlSecBase64CtxPtr</font> ctx,
                                                         <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *out,
                                                         <a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> outSize);</pre>
<p>Encodes or decodes the last piece of data stored in the context
and finalizes the result.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2759"><span style="white-space: nowrap"><code class="PARAMETER">ctx</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the pointer to <gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64Ctx</span></gtkdoclink> structure</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2766"><span style="white-space: nowrap"><code class="PARAMETER">out</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the output buffer</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2771"><span style="white-space: nowrap"><code class="PARAMETER">outSize</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the output buffer size</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2776"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the number of bytes written to output buffer or 
-1 if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBASE64ENCODE"></a><h3>xmlSecBase64Encode ()</h3>
<pre class="PROGRAMLISTING"><font>xmlChar</font>*            xmlSecBase64Encode                  (const <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *buf,
                                                         <a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> len,
                                                         <font>int</font> columns);</pre>
<p>Encodes the data from input buffer and allocates the string for the result.
The caller is responsible for freeing returned buffer using
<gtkdoclink href="XMLFREE"><code class="FUNCTION">xmlFree()</code></gtkdoclink> function.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2795"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the input buffer.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2800"><span style="white-space: nowrap"><code class="PARAMETER">len</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the input buffer size.</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2805"><span style="white-space: nowrap"><code class="PARAMETER">columns</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the output max line length (if 0 then no line breaks
         		would be inserted)</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2810"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> newly allocated string with base64 encoded data 
or NULL if an error occurs.</p></td>
</tr>
</tbody></table>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBASE64DECODE"></a><h3>xmlSecBase64Decode ()</h3>
<pre class="PROGRAMLISTING"><font>int</font>                 xmlSecBase64Decode                  (const <font>xmlChar</font> *str,
                                                         <a href="xmlsec-xmlsec.html#XMLSECBYTE">xmlSecByte</a> *buf,
                                                         <a href="xmlsec-xmlsec.html#XMLSECSIZE">xmlSecSize</a> len);</pre>
<p>Decodes input base64 encoded string and puts result into
the output buffer.</p>
<p></p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2827"><span style="white-space: nowrap"><code class="PARAMETER">str</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the input buffer with base64 encoded string</p></td>
</tr>
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<td align="LEFT" valign="TOP"><a name="AEN2832"><span style="white-space: nowrap"><code class="PARAMETER">buf</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the output buffer</p></td>
</tr>
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<td align="LEFT" valign="TOP"><a name="AEN2837"><span style="white-space: nowrap"><code class="PARAMETER">len</code> :</span></a></td>
<td align="LEFT" valign="TOP"><p> 		the output buffer size</p></td>
</tr>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN2842"><span style="white-space: nowrap"><span class="emphasis"><i class="EMPHASIS">Returns</i></span> :</span></a></td>
<td align="LEFT" valign="TOP"><p> the number of bytes written to the output buffer or 
a negative value if an error occurs </p></td>
</tr>
</tbody></table>
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