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| <div class="section" id="krb5-k-make-checksum-compute-a-checksum-operates-on-opaque-key"> |
| <h1>krb5_k_make_checksum - Compute a checksum (operates on opaque key).<a class="headerlink" href="#krb5-k-make-checksum-compute-a-checksum-operates-on-opaque-key" title="Permalink to this headline">¶</a></h1> |
| <dl class="function"> |
| <dt id="c.krb5_k_make_checksum"> |
| <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_k_make_checksum</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>, <a class="reference internal" href="../types/krb5_key.html#c.krb5_key" title="krb5_key">krb5_key</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_data.html#c.krb5_data" title="krb5_data">krb5_data</a> *<em> input</em>, <a class="reference internal" href="../types/krb5_checksum.html#c.krb5_checksum" title="krb5_checksum">krb5_checksum</a> *<em> cksum</em><span class="sig-paren">)</span><a class="headerlink" href="#c.krb5_k_make_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>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>input</strong> - Input data</p> |
| <p class="last"><strong>[out]</strong> <strong>cksum</strong> - Generated checksum</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> |
| </ul> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <p>This function computes a checksum of type <em>cksumtype</em> over <em>input</em> , using <em>key</em> if the checksum type is a keyed checksum. If <em>cksumtype</em> is 0 and <em>key</em> is non-null, the checksum type will be the mandatory-to-implement checksum type for the key’s encryption type. The actual checksum key will be derived from <em>key</em> and <em>usage</em> if key derivation is specified for the checksum type. The newly created <em>cksum</em> must be released by calling <a class="reference internal" href="krb5_free_checksum_contents.html#c.krb5_free_checksum_contents" title="krb5_free_checksum_contents"><code class="xref c c-func docutils literal"><span class="pre">krb5_free_checksum_contents()</span></code></a> when it is no longer needed.</p> |
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| <p class="first admonition-title">See also</p> |
| <p class="last"><a class="reference internal" href="krb5_c_verify_checksum.html#c.krb5_c_verify_checksum" title="krb5_c_verify_checksum"><code class="xref c c-func docutils literal"><span class="pre">krb5_c_verify_checksum()</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_c_make_checksum.html#c.krb5_c_make_checksum" title="krb5_c_make_checksum"><code class="xref c c-func docutils literal"><span class="pre">krb5_c_make_checksum()</span></code></a> , but operates on opaque <em>key</em> .</p> |
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