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<h1>krb5_c_verify_checksum - Verify a checksum (operates on keyblock).<a class="headerlink" href="#krb5-c-verify-checksum-verify-a-checksum-operates-on-keyblock" title="Permalink to this headline">¶</a></h1>
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<dt id="krb5_c_verify_checksum">
<a class="reference internal" href="../types/krb5_error_code.html#krb5_error_code" title="krb5_error_code">krb5_error_code</a> <tt class="descname">krb5_c_verify_checksum</tt><big>(</big><a class="reference internal" href="../types/krb5_context.html#krb5_context" title="krb5_context">krb5_context</a><em> context</em>, const <a class="reference internal" href="../types/krb5_keyblock.html#krb5_keyblock" title="krb5_keyblock">krb5_keyblock</a> *<em> key</em>, <a class="reference internal" href="../types/krb5_keyusage.html#krb5_keyusage" title="krb5_keyusage">krb5_keyusage</a><em> usage</em>, const <a class="reference internal" href="../types/krb5_data.html#krb5_data" title="krb5_data">krb5_data</a> *<em> data</em>, const <a class="reference internal" href="../types/krb5_checksum.html#krb5_checksum" title="krb5_checksum">krb5_checksum</a> *<em> cksum</em>, <a class="reference internal" href="../types/krb5_boolean.html#krb5_boolean" title="krb5_boolean">krb5_boolean</a> *<em> valid</em><big>)</big><a class="headerlink" href="#krb5_c_verify_checksum" title="Permalink to this definition">¶</a></dt>
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<tr class="field-odd field"><th class="field-name">param:</th><td class="field-body"><p class="first"><strong>[in]</strong> <strong>context</strong> - Library context</p>
<p><strong>[in]</strong> <strong>key</strong> - Encryption key for a keyed checksum</p>
<p><strong>[in]</strong> <strong>usage</strong> - <em>key</em> usage</p>
<p><strong>[in]</strong> <strong>data</strong> - Data to be used to compute a new checksum using <em>key</em> to compare <em>cksum</em> against</p>
<p><strong>[in]</strong> <strong>cksum</strong> - Checksum to be verified</p>
<p class="last"><strong>[out]</strong> <strong>valid</strong> - Non-zero for success, zero for failure</p>
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<li>0 Success; otherwise - Kerberos error codes</li>
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<p>This function verifies that <em>cksum</em> is a valid checksum for <em>data</em> . If the checksum type of <em>cksum</em> is a keyed checksum, <em>key</em> is used to verify the checksum. The actual checksum key will be derived from <em>key</em> and <em>usage</em> if key derivation is specified for the checksum type.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">This function is similar to <a class="reference internal" href="krb5_k_verify_checksum.html#krb5_k_verify_checksum" title="krb5_k_verify_checksum"><tt class="xref c c-func docutils literal"><span class="pre">krb5_k_verify_checksum()</span></tt></a> , but operates on keyblock <em>key</em> .</p>
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