<div class="content"><p> </p><p>The BLOBHEADER structure indicates a key&#39;s binary large
object (BLOB) type and the algorithm that the key uses.</p><table>
 <tbody><tr>
  <th><p><br/>0</p></th>
  <th><p><br/>1</p></th>
  <th><p><br/>2</p></th>
  <th><p><br/>3</p></th>
  <th><p><br/>4</p></th>
  <th><p><br/>5</p></th>
  <th><p><br/>6</p></th>
  <th><p><br/>7</p></th>
  <th><p><br/>8</p></th>
  <th><p><br/>9</p></th>
  <th><p>1<br/>0</p></th>
  <th><p><br/>1</p></th>
  <th><p><br/>2</p></th>
  <th><p><br/>3</p></th>
  <th><p><br/>4</p></th>
  <th><p><br/>5</p></th>
  <th><p><br/>6</p></th>
  <th><p><br/>7</p></th>
  <th><p><br/>8</p></th>
  <th><p><br/>9</p></th>
  <th><p>2<br/>0</p></th>
  <th><p><br/>1</p></th>
  <th><p><br/>2</p></th>
  <th><p><br/>3</p></th>
  <th><p><br/>4</p></th>
  <th><p><br/>5</p></th>
  <th><p><br/>6</p></th>
  <th><p><br/>7</p></th>
  <th><p><br/>8</p></th>
  <th><p><br/>9</p></th>
  <th><p>3<br/>0</p></th>
  <th><p><br/>1</p></th>
 </tr>
 <tr>
  <td colspan="8">
  <p>bType</p>
  </td>
  <td colspan="8">
  <p>bVersion</p>
  </td>
  <td colspan="16">
  <p>wReserved</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>aiKeyAlg</p>
  </td>
 </tr>
</tbody></table><p><b>bType (1 byte): </b>An unsigned 8-bit integer that
MUST contain the key BLOB type. The following key BLOB type is defined.<a id="Appendix_A_Target_8"></a><a aria-label="Product behavior note 8" href="9c868bc8-426a-4e5f-8b45-cee7d49c3d10#Appendix_A_8" data-linktype="relative-path">&lt;8&gt;</a></p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Value</p>
   </th>
   <th>
   <p>Meaning</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>
  <p>PUBLICKEYBLOB</p>
  <p>0x06</p>
  </td>
  <td>
  <p>The key is a <span><a href="993fa29f-3deb-494f-b4b4-492ee945735f#gt_4cf96ca0-e3a9-4165-8d1a-a21b1397007a" data-linktype="relative-path">public key</a></span>.</p>
  </td>
 </tr></tbody></table>
</dd></dl><p><b>bVersion (1 byte): </b>An unsigned 8-bit integer
that contains the version number of the BLOBHEADER. The only value supported by
this protocol is 0x02.</p><p><b>wReserved (2 bytes): </b>An unsigned 16-bit
integer that MUST be set to zero.</p><p><b>aiKeyAlg (4 bytes): </b>An unsigned 32-bit integer
that specifies the key algorithm. The following algorithm identifiers are
defined.<a id="Appendix_A_Target_9"></a><a aria-label="Product behavior note 9" href="9c868bc8-426a-4e5f-8b45-cee7d49c3d10#Appendix_A_9" data-linktype="relative-path">&lt;9&gt;</a></p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Value</p>
   </th>
   <th>
   <p>Meaning</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>
  <p>CALG_RSA_KEYX</p>
  <p>0x0000a400</p>
  </td>
  <td>
  <p>RSA public key exchange algorithm.</p>
  </td>
 </tr><tr>
  <td>
  <p>CALG_RSA_SIGN</p>
  <p>0x00002400</p>
  </td>
  <td>
  <p>RSA public key signature algorithm.</p>
  </td>
 </tr></tbody></table>
</dd></dl><p> </p></div>