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     <h4 class="title">
      <a name="performance-schema-keyring-keys-table">
      </a>
      29.12.18.2 The keyring_keys table
     </h4>
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  <p>
   MySQL Server supports a keyring that enables internal server
          components and plugins to securely store sensitive information
          for later retrieval. See
   <a class="xref" href="keyring.html" title="8.4.4 The MySQL Keyring">
    Section 8.4.4, “The MySQL Keyring”
   </a>
   .
  </p>
  <p>
   The
   <a class="link" href="performance-schema-keyring-keys-table.html" title="29.12.18.2 The keyring_keys table">
    <code class="literal">
     keyring_keys
    </code>
   </a>
   table exposes
          metadata for keys in the keyring. Key metadata includes key
          IDs, key owners, and backend key IDs. The
   <a class="link" href="performance-schema-keyring-keys-table.html" title="29.12.18.2 The keyring_keys table">
    <code class="literal">
     keyring_keys
    </code>
   </a>
   table does
   <span class="emphasis">
    <em>
     not
    </em>
   </span>
   expose any sensitive keyring data
          such as key contents.
  </p>
  <p>
   The
   <a class="link" href="performance-schema-keyring-keys-table.html" title="29.12.18.2 The keyring_keys table">
    <code class="literal">
     keyring_keys
    </code>
   </a>
   table has these
          columns:
  </p>
  <div class="itemizedlist">
   <ul class="itemizedlist" style="list-style-type: disc; ">
    <li class="listitem">
     <p>
      <code class="literal">
       KEY_ID
      </code>
     </p>
     <p>
      The key identifier.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       KEY_OWNER
      </code>
     </p>
     <p>
      The owner of the key.
     </p>
    </li>
    <li class="listitem">
     <p>
      <code class="literal">
       BACKEND_KEY_ID
      </code>
     </p>
     <p>
      The ID used for the key by the keyring backend.
     </p>
    </li>
   </ul>
  </div>
  <p>
   The
   <a class="link" href="performance-schema-keyring-keys-table.html" title="29.12.18.2 The keyring_keys table">
    <code class="literal">
     keyring_keys
    </code>
   </a>
   table has no
          indexes.
  </p>
  <p>
   <a class="link" href="truncate-table.html" title="15.1.37 TRUNCATE TABLE Statement">
    <code class="literal">
     TRUNCATE TABLE
    </code>
   </a>
   is not permitted
          for the
   <a class="link" href="performance-schema-keyring-keys-table.html" title="29.12.18.2 The keyring_keys table">
    <code class="literal">
     keyring_keys
    </code>
   </a>
   table.
  </p>
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