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<h1>
<a name="XMLSEC-BASE64"></a>base64</h1>
<div class="REFNAMEDIV">
<a name="AEN2904"></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>
<gtkdoclink href="INT"><span class="RETURNVALUE">int</span></gtkdoclink><a href="xmlsec-base64.html#XMLSECBASE64GETDEFAULTLINESIZE">xmlSecBase64GetDefaultLineSize</a> (<code class="PARAMETER"><span class="TYPE">void</span></code>);
<gtkdoclink href="VOID"><span class="RETURNVALUE">void</span></gtkdoclink><a href="xmlsec-base64.html#XMLSECBASE64SETDEFAULTLINESIZE">xmlSecBase64SetDefaultLineSize</a> (<code class="PARAMETER"><gtkdoclink href="INT"><span class="TYPE">int</span></gtkdoclink> columns</code>);
<gtkdoclink href="XMLSECBASE64CTX"><span class="RETURNVALUE">xmlSecBase64CtxPtr</span></gtkdoclink><a href="xmlsec-base64.html#XMLSECBASE64CTXCREATE">xmlSecBase64CtxCreate</a> (<code class="PARAMETER"><gtkdoclink href="INT"><span class="TYPE">int</span></gtkdoclink> encode</code>,
<code class="PARAMETER"><gtkdoclink href="INT"><span class="TYPE">int</span></gtkdoclink> columns</code>);
<gtkdoclink href="VOID"><span class="RETURNVALUE">void</span></gtkdoclink><a href="xmlsec-base64.html#XMLSECBASE64CTXDESTROY">xmlSecBase64CtxDestroy</a> (<code class="PARAMETER"><gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64CtxPtr</span></gtkdoclink> ctx</code>);
<gtkdoclink href="INT"><span class="RETURNVALUE">int</span></gtkdoclink><a href="xmlsec-base64.html#XMLSECBASE64CTXINITIALIZE">xmlSecBase64CtxInitialize</a> (<code class="PARAMETER"><gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64CtxPtr</span></gtkdoclink> ctx</code>,
<code class="PARAMETER"><gtkdoclink href="INT"><span class="TYPE">int</span></gtkdoclink> encode</code>,
<code class="PARAMETER"><gtkdoclink href="INT"><span class="TYPE">int</span></gtkdoclink> columns</code>);
<gtkdoclink href="VOID"><span class="RETURNVALUE">void</span></gtkdoclink><a href="xmlsec-base64.html#XMLSECBASE64CTXFINALIZE">xmlSecBase64CtxFinalize</a> (<code class="PARAMETER"><gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64CtxPtr</span></gtkdoclink> ctx</code>);
<gtkdoclink href="INT"><span class="RETURNVALUE">int</span></gtkdoclink><a href="xmlsec-base64.html#XMLSECBASE64CTXUPDATE">xmlSecBase64CtxUpdate</a> (<code class="PARAMETER"><gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64CtxPtr</span></gtkdoclink> ctx</code>,
<code class="PARAMETER">const <a href="xmlsec-xmlsec.html#XMLSECBYTE"><span class="TYPE">xmlSecByte</span></a> *in</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECSIZE"><span class="TYPE">xmlSecSize</span></a> inSize</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECBYTE"><span class="TYPE">xmlSecByte</span></a> *out</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECSIZE"><span class="TYPE">xmlSecSize</span></a> outSize</code>);
<gtkdoclink href="INT"><span class="RETURNVALUE">int</span></gtkdoclink><a href="xmlsec-base64.html#XMLSECBASE64CTXFINAL">xmlSecBase64CtxFinal</a> (<code class="PARAMETER"><gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64CtxPtr</span></gtkdoclink> ctx</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECBYTE"><span class="TYPE">xmlSecByte</span></a> *out</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECSIZE"><span class="TYPE">xmlSecSize</span></a> outSize</code>);
<gtkdoclink href="XMLCHAR"><span class="RETURNVALUE">xmlChar</span></gtkdoclink>* <a href="xmlsec-base64.html#XMLSECBASE64ENCODE">xmlSecBase64Encode</a> (<code class="PARAMETER">const <a href="xmlsec-xmlsec.html#XMLSECBYTE"><span class="TYPE">xmlSecByte</span></a> *buf</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECSIZE"><span class="TYPE">xmlSecSize</span></a> len</code>,
<code class="PARAMETER"><gtkdoclink href="INT"><span class="TYPE">int</span></gtkdoclink> columns</code>);
<gtkdoclink href="INT"><span class="RETURNVALUE">int</span></gtkdoclink><a href="xmlsec-base64.html#XMLSECBASE64DECODE">xmlSecBase64Decode</a> (<code class="PARAMETER">const <gtkdoclink href="XMLCHAR"><span class="TYPE">xmlChar</span></gtkdoclink> *str</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECBYTE"><span class="TYPE">xmlSecByte</span></a> *buf</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECSIZE"><span class="TYPE">xmlSecSize</span></a> len</code>);</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>
</div>
<hr>
<div class="REFSECT2">
<a name="XMLSECBASE64GETDEFAULTLINESIZE"></a><h3>xmlSecBase64GetDefaultLineSize ()</h3>
<pre class="PROGRAMLISTING"><gtkdoclink href="INT"><span class="RETURNVALUE">int</span></gtkdoclink> xmlSecBase64GetDefaultLineSize (<code class="PARAMETER"><span class="TYPE">void</span></code>);</pre>
<p>Gets the current default line size.</p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody><tr>
<td align="LEFT" valign="TOP"><a name="AEN3031"><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"><gtkdoclink href="VOID"><span class="RETURNVALUE">void</span></gtkdoclink> xmlSecBase64SetDefaultLineSize (<code class="PARAMETER"><gtkdoclink href="INT"><span class="TYPE">int</span></gtkdoclink> columns</code>);</pre>
<p>Sets the current default line size.</p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody><tr>
<td align="LEFT" valign="TOP"><a name="AEN3048"><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"><gtkdoclink href="XMLSECBASE64CTX"><span class="RETURNVALUE">xmlSecBase64CtxPtr</span></gtkdoclink> xmlSecBase64CtxCreate (<code class="PARAMETER"><gtkdoclink href="INT"><span class="TYPE">int</span></gtkdoclink> encode</code>,
<code class="PARAMETER"><gtkdoclink href="INT"><span class="TYPE">int</span></gtkdoclink> columns</code>);</pre>
<p>Allocates and initializes new base64 context.</p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3068"><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="AEN3073"><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="AEN3078"><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"><gtkdoclink href="VOID"><span class="RETURNVALUE">void</span></gtkdoclink> xmlSecBase64CtxDestroy (<code class="PARAMETER"><gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64CtxPtr</span></gtkdoclink> ctx</code>);</pre>
<p>Destroys base64 context.</p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody><tr>
<td align="LEFT" valign="TOP"><a name="AEN3097"><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"><gtkdoclink href="INT"><span class="RETURNVALUE">int</span></gtkdoclink> xmlSecBase64CtxInitialize (<code class="PARAMETER"><gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64CtxPtr</span></gtkdoclink> ctx</code>,
<code class="PARAMETER"><gtkdoclink href="INT"><span class="TYPE">int</span></gtkdoclink> encode</code>,
<code class="PARAMETER"><gtkdoclink href="INT"><span class="TYPE">int</span></gtkdoclink> columns</code>);</pre>
<p>Initializes new base64 context.</p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3122"><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="AEN3129"><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="AEN3134"><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="AEN3139"><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"><gtkdoclink href="VOID"><span class="RETURNVALUE">void</span></gtkdoclink> xmlSecBase64CtxFinalize (<code class="PARAMETER"><gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64CtxPtr</span></gtkdoclink> ctx</code>);</pre>
<p>Frees all the resources allocated by <code class="PARAMETER">ctx</code>.</p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody><tr>
<td align="LEFT" valign="TOP"><a name="AEN3157"><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"><gtkdoclink href="INT"><span class="RETURNVALUE">int</span></gtkdoclink> xmlSecBase64CtxUpdate (<code class="PARAMETER"><gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64CtxPtr</span></gtkdoclink> ctx</code>,
<code class="PARAMETER">const <a href="xmlsec-xmlsec.html#XMLSECBYTE"><span class="TYPE">xmlSecByte</span></a> *in</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECSIZE"><span class="TYPE">xmlSecSize</span></a> inSize</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECBYTE"><span class="TYPE">xmlSecByte</span></a> *out</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECSIZE"><span class="TYPE">xmlSecSize</span></a> outSize</code>);</pre>
<p>Encodes or decodes the next piece of data from input buffer.</p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3188"><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="AEN3195"><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="AEN3200"><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="AEN3205"><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="AEN3210"><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="AEN3215"><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"><gtkdoclink href="INT"><span class="RETURNVALUE">int</span></gtkdoclink> xmlSecBase64CtxFinal (<code class="PARAMETER"><gtkdoclink href="XMLSECBASE64CTX"><span class="TYPE">xmlSecBase64CtxPtr</span></gtkdoclink> ctx</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECBYTE"><span class="TYPE">xmlSecByte</span></a> *out</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECSIZE"><span class="TYPE">xmlSecSize</span></a> outSize</code>);</pre>
<p>Encodes or decodes the last piece of data stored in the context
and finalizes the result.</p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3238"><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="AEN3245"><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="AEN3250"><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="AEN3255"><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"><gtkdoclink href="XMLCHAR"><span class="RETURNVALUE">xmlChar</span></gtkdoclink>* xmlSecBase64Encode (<code class="PARAMETER">const <a href="xmlsec-xmlsec.html#XMLSECBYTE"><span class="TYPE">xmlSecByte</span></a> *buf</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECSIZE"><span class="TYPE">xmlSecSize</span></a> len</code>,
<code class="PARAMETER"><gtkdoclink href="INT"><span class="TYPE">int</span></gtkdoclink> columns</code>);</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>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3280"><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="AEN3285"><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="AEN3290"><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="AEN3295"><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"><gtkdoclink href="INT"><span class="RETURNVALUE">int</span></gtkdoclink> xmlSecBase64Decode (<code class="PARAMETER">const <gtkdoclink href="XMLCHAR"><span class="TYPE">xmlChar</span></gtkdoclink> *str</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECBYTE"><span class="TYPE">xmlSecByte</span></a> *buf</code>,
<code class="PARAMETER"><a href="xmlsec-xmlsec.html#XMLSECSIZE"><span class="TYPE">xmlSecSize</span></a> len</code>);</pre>
<p>Decodes input base64 encoded string and puts result into
the output buffer.</p>
<p></p>
<table class="variablelist" border="0" cellspacing="0" cellpadding="4"><tbody>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3318"><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>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3323"><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>
<tr>
<td align="LEFT" valign="TOP"><a name="AEN3328"><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="AEN3333"><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>
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