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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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 <span id="projectnumber">2.42.0</span>
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<li class="navelem"><a class="el" href="namespaceGlib.html">Glib</a></li><li class="navelem"><a class="el" href="classGlib_1_1Checksum.html">Checksum</a></li> </ul>
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<a href="#pub-types">Public Types</a> |
<a href="#pub-methods">Public Member Functions</a> |
<a href="#pub-static-methods">Static Public Member Functions</a> |
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<div class="title">Glib::Checksum Class Reference</div> </div>
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<p>Computes the checksum for data.
<a href="classGlib_1_1Checksum.html#details">More...</a></p>
<p><code>#include <glibmm/checksum.h></code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:ga5d1c13a9d5c34bff7dd1e74654f282eb"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282eb">ChecksumType</a> { <br />
  <a class="el" href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282ebaa22d278286ecebcc3bc58636a1aa909d">CHECKSUM_MD5</a>,
<br />
  <a class="el" href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282ebab2258b031ebb9a20477f4d564ac26e52">CHECKSUM_SHA1</a>,
<br />
  <a class="el" href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282ebadc95ea210a79482241022fd0bb19c957">CHECKSUM_SHA256</a>,
<br />
  <a class="el" href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282eba7a4ed07c4b7a43431ac773c8485f871a">CHECKSUM_SHA512</a>
<br />
}</td></tr>
<tr class="memdesc:ga5d1c13a9d5c34bff7dd1e74654f282eb"><td class="mdescLeft"> </td><td class="mdescRight">The hashing algorithm to be used by <a class="el" href="classGlib_1_1Checksum.html" title="Computes the checksum for data. ">Checksum</a> when performing the digest of some data. <a href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282eb">More...</a><br /></td></tr>
<tr class="separator:ga5d1c13a9d5c34bff7dd1e74654f282eb"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a218ef89e5467d6cb8b2687813b286ced"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a218ef89e5467d6cb8b2687813b286ced">Checksum</a> ()</td></tr>
<tr class="memdesc:a218ef89e5467d6cb8b2687813b286ced"><td class="mdescLeft"> </td><td class="mdescRight">Constructs an invalid object. <a href="#a218ef89e5467d6cb8b2687813b286ced">More...</a><br /></td></tr>
<tr class="separator:a218ef89e5467d6cb8b2687813b286ced"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1c27c48e7c6ad69617b8480b8aca4531"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a1c27c48e7c6ad69617b8480b8aca4531">Checksum</a> (GChecksum* castitem, bool make_a_copy=false)</td></tr>
<tr class="separator:a1c27c48e7c6ad69617b8480b8aca4531"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4839f2e9e33ac5bdb1cf696d8ecf4a10"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a4839f2e9e33ac5bdb1cf696d8ecf4a10">Checksum</a> (const <a class="el" href="classGlib_1_1Checksum.html">Checksum</a>& src)</td></tr>
<tr class="separator:a4839f2e9e33ac5bdb1cf696d8ecf4a10"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a830ae51f3f4cb4a024d3303f88bc6dcc"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGlib_1_1Checksum.html">Checksum</a>& </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a830ae51f3f4cb4a024d3303f88bc6dcc">operator=</a> (const <a class="el" href="classGlib_1_1Checksum.html">Checksum</a>& src)</td></tr>
<tr class="separator:a830ae51f3f4cb4a024d3303f88bc6dcc"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a81332918818a0a29cd851e3811b1a0ef"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a81332918818a0a29cd851e3811b1a0ef">~Checksum</a> ()</td></tr>
<tr class="separator:a81332918818a0a29cd851e3811b1a0ef"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a5bebbdf1ef296503c0eb86493e675cc7"><td class="memItemLeft" align="right" valign="top">GChecksum* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a5bebbdf1ef296503c0eb86493e675cc7">gobj</a> ()</td></tr>
<tr class="separator:a5bebbdf1ef296503c0eb86493e675cc7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a40378be1df574c9f74fb7cc54d7b7056"><td class="memItemLeft" align="right" valign="top">const GChecksum* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a40378be1df574c9f74fb7cc54d7b7056">gobj</a> () const </td></tr>
<tr class="separator:a40378be1df574c9f74fb7cc54d7b7056"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6c2600dfa5258c5db06c7525396f8bb3"><td class="memItemLeft" align="right" valign="top">GChecksum* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a6c2600dfa5258c5db06c7525396f8bb3">gobj_copy</a> () const </td></tr>
<tr class="memdesc:a6c2600dfa5258c5db06c7525396f8bb3"><td class="mdescLeft"> </td><td class="mdescRight">Provides access to the underlying C instance. The caller is responsible for freeing it. Use when directly setting fields in structs. <a href="#a6c2600dfa5258c5db06c7525396f8bb3">More...</a><br /></td></tr>
<tr class="separator:a6c2600dfa5258c5db06c7525396f8bb3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a774f43a89f371e8c50b6ff1da56291d8"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a774f43a89f371e8c50b6ff1da56291d8">Checksum</a> (<a class="el" href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282eb">ChecksumType</a> checksum_type)</td></tr>
<tr class="memdesc:a774f43a89f371e8c50b6ff1da56291d8"><td class="mdescLeft"> </td><td class="mdescRight">Creates a new <a class="el" href="classGlib_1_1Checksum.html" title="Computes the checksum for data. ">Checksum</a>, using the checksum algorithm <em>checksum_type</em>. <a href="#a774f43a89f371e8c50b6ff1da56291d8">More...</a><br /></td></tr>
<tr class="separator:a774f43a89f371e8c50b6ff1da56291d8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae817700e566bd94b9a71f358c4a4eeed"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#ae817700e566bd94b9a71f358c4a4eeed">operator bool</a> () const </td></tr>
<tr class="memdesc:ae817700e566bd94b9a71f358c4a4eeed"><td class="mdescLeft"> </td><td class="mdescRight">Returns true if the <a class="el" href="classGlib_1_1Checksum.html" title="Computes the checksum for data. ">Checksum</a> object is valid. <a href="#ae817700e566bd94b9a71f358c4a4eeed">More...</a><br /></td></tr>
<tr class="separator:ae817700e566bd94b9a71f358c4a4eeed"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a75343718b489251d1ea7ea417674b2b6"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a75343718b489251d1ea7ea417674b2b6">reset</a> ()</td></tr>
<tr class="memdesc:a75343718b489251d1ea7ea417674b2b6"><td class="mdescLeft"> </td><td class="mdescRight">Resets the state of the <em>checksum</em> back to its initial state. <a href="#a75343718b489251d1ea7ea417674b2b6">More...</a><br /></td></tr>
<tr class="separator:a75343718b489251d1ea7ea417674b2b6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a49c961d3ecf8a4c62bd2177c2e32ac79"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a49c961d3ecf8a4c62bd2177c2e32ac79">update</a> (const guchar* data, gsize length)</td></tr>
<tr class="memdesc:a49c961d3ecf8a4c62bd2177c2e32ac79"><td class="mdescLeft"> </td><td class="mdescRight">Feeds <em>data</em> into an existing <a class="el" href="classGlib_1_1Checksum.html" title="Computes the checksum for data. ">Checksum</a>. <a href="#a49c961d3ecf8a4c62bd2177c2e32ac79">More...</a><br /></td></tr>
<tr class="separator:a49c961d3ecf8a4c62bd2177c2e32ac79"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6fa8c44666e92d66a6af10495e2df67d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a6fa8c44666e92d66a6af10495e2df67d">update</a> (const <a class="elRef" doxygen="/opt/gnome/share/mm-common/doctags/libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01681.html#ga32db3d9898c44d3b3a578b560f7758cc">std::string</a>& data)</td></tr>
<tr class="memdesc:a6fa8c44666e92d66a6af10495e2df67d"><td class="mdescLeft"> </td><td class="mdescRight">Feeds data into an existing <a class="el" href="classGlib_1_1Checksum.html" title="Computes the checksum for data. ">Checksum</a>. <a href="#a6fa8c44666e92d66a6af10495e2df67d">More...</a><br /></td></tr>
<tr class="separator:a6fa8c44666e92d66a6af10495e2df67d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2dab438a05d0c74f25daea6c19af8f30"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a2dab438a05d0c74f25daea6c19af8f30">get_digest</a> (guint8* buffer, gsize* digest_len) const </td></tr>
<tr class="memdesc:a2dab438a05d0c74f25daea6c19af8f30"><td class="mdescLeft"> </td><td class="mdescRight">Gets the digest from <em>checksum</em> as a raw binary vector and places it into <em>buffer</em>. <a href="#a2dab438a05d0c74f25daea6c19af8f30">More...</a><br /></td></tr>
<tr class="separator:a2dab438a05d0c74f25daea6c19af8f30"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a139a8bb447bb6617ffd0b3a2ef38808b"><td class="memItemLeft" align="right" valign="top"><a class="elRef" doxygen="/opt/gnome/share/mm-common/doctags/libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01681.html#ga32db3d9898c44d3b3a578b560f7758cc">std::string</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a139a8bb447bb6617ffd0b3a2ef38808b">get_string</a> () const </td></tr>
<tr class="memdesc:a139a8bb447bb6617ffd0b3a2ef38808b"><td class="mdescLeft"> </td><td class="mdescRight">Gets the digest as an hexadecimal string. <a href="#a139a8bb447bb6617ffd0b3a2ef38808b">More...</a><br /></td></tr>
<tr class="separator:a139a8bb447bb6617ffd0b3a2ef38808b"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:a034ca483253820866082d6ac82f81a79"><td class="memItemLeft" align="right" valign="top">static <a class="elRef" doxygen="/opt/gnome/share/mm-common/doctags/libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01681.html#ga32db3d9898c44d3b3a578b560f7758cc">std::string</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a034ca483253820866082d6ac82f81a79">compute_checksum</a> (<a class="el" href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282eb">ChecksumType</a> checksum_type, const guchar* data, gsize length)</td></tr>
<tr class="memdesc:a034ca483253820866082d6ac82f81a79"><td class="mdescLeft"> </td><td class="mdescRight">Computes the checksum for a binary <em>data</em> of <em>length</em>. <a href="#a034ca483253820866082d6ac82f81a79">More...</a><br /></td></tr>
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<tr class="memitem:acfa10bceb4e7c8f7fb4f5782329a9a22"><td class="memItemLeft" align="right" valign="top">static <a class="elRef" doxygen="/opt/gnome/share/mm-common/doctags/libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01681.html#ga32db3d9898c44d3b3a578b560f7758cc">std::string</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#acfa10bceb4e7c8f7fb4f5782329a9a22">compute_checksum</a> (<a class="el" href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282eb">ChecksumType</a> checksum_type, const <a class="elRef" doxygen="/opt/gnome/share/mm-common/doctags/libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01681.html#ga32db3d9898c44d3b3a578b560f7758cc">std::string</a>& str)</td></tr>
<tr class="memdesc:acfa10bceb4e7c8f7fb4f5782329a9a22"><td class="mdescLeft"> </td><td class="mdescRight">Computes the checksum of a string. <a href="#acfa10bceb4e7c8f7fb4f5782329a9a22">More...</a><br /></td></tr>
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<tr class="memitem:a2f288fe9e08a7ac4e4f81a6e1a957606"><td class="memItemLeft" align="right" valign="top">static gssize </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a2f288fe9e08a7ac4e4f81a6e1a957606">get_length</a> (<a class="el" href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282eb">ChecksumType</a> checksum_type)</td></tr>
<tr class="memdesc:a2f288fe9e08a7ac4e4f81a6e1a957606"><td class="mdescLeft"> </td><td class="mdescRight">Gets the length in bytes of digests of type <em>checksum_type</em>. <a href="#a2f288fe9e08a7ac4e4f81a6e1a957606">More...</a><br /></td></tr>
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Protected Attributes</h2></td></tr>
<tr class="memitem:a7f5c4a8761c07e1062a8cb47d0b047b3"><td class="memItemLeft" align="right" valign="top">GChecksum* </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#a7f5c4a8761c07e1062a8cb47d0b047b3">gobject_</a></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="related"></a>
Related Functions</h2></td></tr>
<tr><td class="ititle" colspan="2"><p>(Note that these are not member functions.) </p>
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<tr class="memitem:aede26bdadd5441f327f6b36ce9a9fbf1"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classGlib_1_1Checksum.html">Glib::Checksum</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classGlib_1_1Checksum.html#aede26bdadd5441f327f6b36ce9a9fbf1">wrap</a> (GChecksum* object, bool take_copy=false)</td></tr>
<tr class="memdesc:aede26bdadd5441f327f6b36ce9a9fbf1"><td class="mdescLeft"> </td><td class="mdescRight">A <a class="el" href="namespaceGlib.html#a671306f4a3a0cae5ab4d7a9d54886592">Glib::wrap()</a> method for this object. <a href="#aede26bdadd5441f327f6b36ce9a9fbf1">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>Computes the checksum for data. </p>
<p>This is a generic API for computing checksums (or "digests") for a sequence of arbitrary bytes, using various hashing algorithms like MD5, SHA-1 and SHA-256. Checksums are commonly used in various environments and specifications.</p>
<p>glibmm supports incremental checksums by calling <a class="el" href="classGlib_1_1Checksum.html#a49c961d3ecf8a4c62bd2177c2e32ac79" title="Feeds data into an existing Checksum. ">update()</a> as long as there's data available and then using <a class="el" href="classGlib_1_1Checksum.html#a139a8bb447bb6617ffd0b3a2ef38808b" title="Gets the digest as an hexadecimal string. ">get_string()</a> or <a class="el" href="classGlib_1_1Checksum.html#a2dab438a05d0c74f25daea6c19af8f30" title="Gets the digest from checksum as a raw binary vector and places it into buffer. ">get_digest()</a> to compute the checksum and return it either as a string in hexadecimal form, or as a raw sequence of bytes. To compute the checksum for binary blobs and NULL-terminated strings in one go, use the static <a class="el" href="classGlib_1_1Checksum.html#a034ca483253820866082d6ac82f81a79" title="Computes the checksum for a binary data of length. ">compute_checksum()</a> convenience functions().</p>
<dl class="since_2_16"><dt><b><a class="el" href="since_2_16.html#_since_2_16000001">Since glibmm 2.16:</a></b></dt><dd></dd></dl>
</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<p>Constructs an invalid object. </p>
<p>E.g. for output arguments to methods. There is not much you can do with the object before it has been assigned a valid value. </p>
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<td class="paramtype">const <a class="el" href="classGlib_1_1Checksum.html">Checksum</a>& </td>
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<td class="paramtype"><a class="el" href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282eb">ChecksumType</a> </td>
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<p>Creates a new <a class="el" href="classGlib_1_1Checksum.html" title="Computes the checksum for data. ">Checksum</a>, using the checksum algorithm <em>checksum_type</em>. </p>
<p>If the checksum_type is not known, then operator bool() will return false.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">checksum_type</td><td><a class="el" href="classGlib_1_1Checksum.html" title="Computes the checksum for data. ">Checksum</a> type, one of defined above. </td></tr>
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<h2 class="groupheader">Member Function Documentation</h2>
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<td class="paramtype"><a class="el" href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282eb">ChecksumType</a> </td>
<td class="paramname"><em>checksum_type</em>, </td>
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<p>Computes the checksum for a binary <em>data</em> of <em>length</em>. </p>
<p>This is a convenience wrapper for g_checksum_new(), g_checksum_get_string() and g_checksum_free().</p>
<p>The hexadecimal string returned will be in lower case.</p>
<dl class="since_2_16"><dt><b><a class="el" href="since_2_16.html#_since_2_16000007">Since glibmm 2.16:</a></b></dt><dd></dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">checksum_type</td><td>A <a class="el" href="classChecksumType.html" title="CHECKSUM_MD5: Use the MD5 hashing algorithm CHECKSUM_SHA1: Use the SHA-1 hashing algorithm CHECKSUM_S...">ChecksumType</a>. </td></tr>
<tr><td class="paramname">data</td><td>Binary blob to compute the digest of. </td></tr>
<tr><td class="paramname">length</td><td>Length of <em>data</em>. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The digest of the binary data as a string in hexadecimal. The returned string should be freed with g_free() when done using it. </dd></dl>
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<td class="paramtype"><a class="el" href="group__glibmmEnums.html#ga5d1c13a9d5c34bff7dd1e74654f282eb">ChecksumType</a> </td>
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<p>Computes the checksum of a string. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">checksum_type</td><td>A <a class="el" href="classChecksumType.html" title="CHECKSUM_MD5: Use the MD5 hashing algorithm CHECKSUM_SHA1: Use the SHA-1 hashing algorithm CHECKSUM_S...">ChecksumType</a> </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The checksum as a hexadecimal string. </dd></dl>
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<td class="memname">void Glib::Checksum::get_digest </td>
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<p>Gets the digest from <em>checksum</em> as a raw binary vector and places it into <em>buffer</em>. </p>
<p>The size of the digest depends on the type of checksum.</p>
<p>Once this function has been called, the <a class="el" href="classGlib_1_1Checksum.html" title="Computes the checksum for data. ">Checksum</a> is closed and can no longer be updated with g_checksum_update().</p>
<dl class="since_2_16"><dt><b><a class="el" href="since_2_16.html#_since_2_16000005">Since glibmm 2.16:</a></b></dt><dd></dd></dl>
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<p>Gets the length in bytes of digests of type <em>checksum_type</em>. </p>
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<dl class="section return"><dt>Returns</dt><dd>The checksum length, or -1 if <em>checksum_type</em> is not supported. </dd></dl>
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<p>Gets the digest as an hexadecimal string. </p>
<p>Once this function has been called the <a class="el" href="classGlib_1_1Checksum.html" title="Computes the checksum for data. ">Checksum</a> can no longer be updated with g_checksum_update().</p>
<p>The hexadecimal characters will be lower case.</p>
<dl class="since_2_16"><dt><b><a class="el" href="since_2_16.html#_since_2_16000006">Since glibmm 2.16:</a></b></dt><dd></dd></dl>
<dl class="section return"><dt>Returns</dt><dd>The hexadecimal representation of the checksum. The returned string is owned by the checksum and should not be modified or freed. </dd></dl>
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<p>Provides access to the underlying C instance. The caller is responsible for freeing it. Use when directly setting fields in structs. </p>
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<p>Returns true if the <a class="el" href="classGlib_1_1Checksum.html" title="Computes the checksum for data. ">Checksum</a> object is valid. </p>
<p>This will return false, for instance, if an unsupported checksum type was provided to the constructor. </p>
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<td class="memname"><a class="el" href="classGlib_1_1Checksum.html">Checksum</a>& Glib::Checksum::operator= </td>
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<td class="paramtype">const <a class="el" href="classGlib_1_1Checksum.html">Checksum</a>& </td>
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<td class="memname">void Glib::Checksum::reset </td>
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<p>Resets the state of the <em>checksum</em> back to its initial state. </p>
<dl class="since_2_18"><dt><b><a class="el" href="since_2_18.html#_since_2_18000001">Since glibmm 2.18:</a></b></dt><dd></dd></dl>
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<td class="memname">void Glib::Checksum::update </td>
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<td class="paramtype">const guchar * </td>
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<p>Feeds <em>data</em> into an existing <a class="el" href="classGlib_1_1Checksum.html" title="Computes the checksum for data. ">Checksum</a>. </p>
<p>The checksum must still be open, that is g_checksum_get_string() or g_checksum_get_digest() must not have been called on <em>checksum</em>.</p>
<dl class="since_2_16"><dt><b><a class="el" href="since_2_16.html#_since_2_16000004">Since glibmm 2.16:</a></b></dt><dd></dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">data</td><td>Buffer used to compute the checksum. </td></tr>
<tr><td class="paramname">length</td><td>Size of the buffer, or -1 if it is a null-terminated string. </td></tr>
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<td class="memname">void Glib::Checksum::update </td>
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<td class="paramtype">const <a class="elRef" doxygen="/opt/gnome/share/mm-common/doctags/libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01681.html#ga32db3d9898c44d3b3a578b560f7758cc">std::string</a> & </td>
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<p>Feeds data into an existing <a class="el" href="classGlib_1_1Checksum.html" title="Computes the checksum for data. ">Checksum</a>. </p>
<p>The checksum must still be open, that is <a class="el" href="classGlib_1_1Checksum.html#a139a8bb447bb6617ffd0b3a2ef38808b" title="Gets the digest as an hexadecimal string. ">get_string()</a> or <a class="el" href="classGlib_1_1Checksum.html#a2dab438a05d0c74f25daea6c19af8f30" title="Gets the digest from checksum as a raw binary vector and places it into buffer. ">get_digest()</a> must not have been called on the checksum.</p>
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<tr><td class="paramname">data</td><td>Buffer used to compute the checksum </td></tr>
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<h2 class="groupheader">Friends And Related Function Documentation</h2>
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<td class="memname"><a class="el" href="classGlib_1_1Checksum.html">Glib::Checksum</a> wrap </td>
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<span class="mlabels"><span class="mlabel">related</span></span> </td>
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<p>A <a class="el" href="namespaceGlib.html#a671306f4a3a0cae5ab4d7a9d54886592">Glib::wrap()</a> method for this object. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">object</td><td>The C instance. </td></tr>
<tr><td class="paramname">take_copy</td><td>False if the result should take ownership of the C instance. True if it should take a new copy or ref. </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>A C++ instance that wraps this C instance. </dd></dl>
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<h2 class="groupheader">Member Data Documentation</h2>
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<td class="memname">GChecksum* Glib::Checksum::gobject_</td>
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