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<title>krb5_k_verify_checksum_iov - Validate a checksum element in IOV array (operates on opaque key). — MIT Kerberos Documentation</title>
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<section id="krb5-k-verify-checksum-iov-validate-a-checksum-element-in-iov-array-operates-on-opaque-key">
<h1>krb5_k_verify_checksum_iov - Validate a checksum element in IOV array (operates on opaque key).<a class="headerlink" href="#krb5-k-verify-checksum-iov-validate-a-checksum-element-in-iov-array-operates-on-opaque-key" title="Link to this heading">¶</a></h1>
<dl class="c function">
<dt class="sig sig-object c" id="c.krb5_k_verify_checksum_iov">
<a class="reference internal" href="../types/krb5_error_code.html#c.krb5_error_code" title="krb5_error_code"><span class="n"><span class="pre">krb5_error_code</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">krb5_k_verify_checksum_iov</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="../types/krb5_context.html#c.krb5_context" title="krb5_context"><span class="n"><span class="pre">krb5_context</span></span></a><span class="w"> </span><span class="n"><span class="pre">context</span></span>, <a class="reference internal" href="../types/krb5_cksumtype.html#c.krb5_cksumtype" title="krb5_cksumtype"><span class="n"><span class="pre">krb5_cksumtype</span></span></a><span class="w"> </span><span class="n"><span class="pre">cksumtype</span></span>, <a class="reference internal" href="../types/krb5_key.html#c.krb5_key" title="krb5_key"><span class="n"><span class="pre">krb5_key</span></span></a><span class="w"> </span><span class="n"><span class="pre">key</span></span>, <a class="reference internal" href="../types/krb5_keyusage.html#c.krb5_keyusage" title="krb5_keyusage"><span class="n"><span class="pre">krb5_keyusage</span></span></a><span class="w"> </span><span class="n"><span class="pre">usage</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><a class="reference internal" href="../types/krb5_crypto_iov.html#c.krb5_crypto_iov" title="krb5_crypto_iov"><span class="n"><span class="pre">krb5_crypto_iov</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">data</span></span>, <span class="n"><span class="pre">size_t</span></span><span class="w"> </span><span class="n"><span class="pre">num_data</span></span>, <a class="reference internal" href="../types/krb5_boolean.html#c.krb5_boolean" title="krb5_boolean"><span class="n"><span class="pre">krb5_boolean</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">valid</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.krb5_k_verify_checksum_iov" title="Link to this definition">¶</a><br /></dt>
<dd></dd></dl>
<dl class="field-list">
<dt class="field-odd">param<span class="colon">:</span></dt>
<dd class="field-odd"><p><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 KRB5_KEYUSAGE macros)</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><strong>[out]</strong> <strong>valid</strong> - Non-zero for success, zero for failure</p>
</dd>
</dl>
<dl class="field-list simple">
<dt class="field-odd">retval<span class="colon">:</span></dt>
<dd class="field-odd"><ul class="simple">
<li><p>0 Success; otherwise - Kerberos error codes</p></li>
</ul>
</dd>
</dl>
<p>Confirm that the checksum in the KRB5_CRYPTO_TYPE_CHECKSUM element is a valid checksum of the KRB5_CRYPTO_TYPE_DATA and KRB5_CRYPTO_TYPE_SIGN_ONLY regions in the iov.</p>
<div class="admonition seealso">
<p class="admonition-title">See also</p>
<p>krb5_k_make_checksum_iov()</p>
</div>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>This function is similar to krb5_c_verify_checksum_iov(), but operates on opaque <em>key</em> .</p>
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