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<div class="section" id="krb5-c-verify-checksum-iov-validate-a-checksum-element-in-iov-array-operates-on-keyblock">
<h1>krb5_c_verify_checksum_iov - Validate a checksum element in IOV array (operates on keyblock).<a class="headerlink" href="#krb5-c-verify-checksum-iov-validate-a-checksum-element-in-iov-array-operates-on-keyblock" title="Permalink to this headline">¶</a></h1>
<dl class="function">
<dt id="c.krb5_c_verify_checksum_iov">
<a class="reference internal" href="../types/krb5_error_code.html#c.krb5_error_code" title="krb5_error_code">krb5_error_code</a> <code class="descname">krb5_c_verify_checksum_iov</code><span class="sig-paren">(</span><a class="reference internal" href="../types/krb5_context.html#c.krb5_context" title="krb5_context">krb5_context</a><em> context</em>, <a class="reference internal" href="../types/krb5_cksumtype.html#c.krb5_cksumtype" title="krb5_cksumtype">krb5_cksumtype</a><em> cksumtype</em>, const <a class="reference internal" href="../types/krb5_keyblock.html#c.krb5_keyblock" title="krb5_keyblock">krb5_keyblock</a> *<em> key</em>, <a class="reference internal" href="../types/krb5_keyusage.html#c.krb5_keyusage" title="krb5_keyusage">krb5_keyusage</a><em> usage</em>, const <a class="reference internal" href="../types/krb5_crypto_iov.html#c.krb5_crypto_iov" title="krb5_crypto_iov">krb5_crypto_iov</a> *<em> data</em>, size_t<em> num_data</em>, <a class="reference internal" href="../types/krb5_boolean.html#c.krb5_boolean" title="krb5_boolean">krb5_boolean</a> *<em> valid</em><span class="sig-paren">)</span><a class="headerlink" href="#c.krb5_c_verify_checksum_iov" 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>cksumtype</strong> - Checksum type (0 for mandatory type)</p>
<p><strong>[in]</strong> <strong>key</strong> - Encryption key for a keyed checksum</p>
<p><strong>[in]</strong> <strong>usage</strong> - Key usage (see <code class="xref py py-data docutils literal"><span class="pre">KRB5_KEYUSAGE</span></code> types)</p>
<p><strong>[in]</strong> <strong>data</strong> - IOV array</p>
<p><strong>[in]</strong> <strong>num_data</strong> - Size of <em>data</em></p>
<p class="last"><strong>[out]</strong> <strong>valid</strong> - Non-zero for success, zero for failure</p>
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<tr class="field-odd field"><th class="field-name">retval:</th><td class="field-body"><ul class="first last simple">
<li>0 Success; otherwise - Kerberos error codes</li>
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<p>Confirm that the checksum in the <a class="reference internal" href="../macros/KRB5_CRYPTO_TYPE_CHECKSUM.html#KRB5_CRYPTO_TYPE_CHECKSUM" title="KRB5_CRYPTO_TYPE_CHECKSUM"><code class="xref py py-data docutils literal"><span class="pre">KRB5_CRYPTO_TYPE_CHECKSUM</span></code></a> element is a valid checksum of the <a class="reference internal" href="../macros/KRB5_CRYPTO_TYPE_DATA.html#KRB5_CRYPTO_TYPE_DATA" title="KRB5_CRYPTO_TYPE_DATA"><code class="xref py py-data docutils literal"><span class="pre">KRB5_CRYPTO_TYPE_DATA</span></code></a> and <a class="reference internal" href="../macros/KRB5_CRYPTO_TYPE_SIGN_ONLY.html#KRB5_CRYPTO_TYPE_SIGN_ONLY" title="KRB5_CRYPTO_TYPE_SIGN_ONLY"><code class="xref py py-data docutils literal"><span class="pre">KRB5_CRYPTO_TYPE_SIGN_ONLY</span></code></a> regions in the iov.</p>
<div class="admonition seealso">
<p class="first admonition-title">See also</p>
<p class="last"><a class="reference internal" href="krb5_c_make_checksum_iov.html#c.krb5_c_make_checksum_iov" title="krb5_c_make_checksum_iov"><code class="xref c c-func docutils literal"><span class="pre">krb5_c_make_checksum_iov()</span></code></a></p>
</div>
<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_iov.html#c.krb5_k_verify_checksum_iov" title="krb5_k_verify_checksum_iov"><code class="xref c c-func docutils literal"><span class="pre">krb5_k_verify_checksum_iov()</span></code></a> , but operates on keyblock <em>key</em> .</p>
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