<div class="content"><p> </p><p>The value for the KEY_PROV_INFO property (if this property
is present) MUST be in the following format:</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="32">
  <p>Offset to
  Container Name</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>Offset to
  Provider Name</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>Provider
  Type</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>Flags</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>Reserved</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>...</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>Key
  Specification</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>Name Data
  (variable)</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>...</p>
  </td>
 </tr>
</tbody></table><p><b>Offset to Container Name (4 bytes): </b>This MUST
be set to the offset, in bytes, of the <b>Container Name</b> subfield of the <b>Name
Data</b> field from the beginning of this structure. It MUST be an unsigned
32-bit integer in little-endian format.</p><p><b>Offset to Provider Name (4 bytes): </b> This MUST
be set to the offset, in bytes, of the <b>Provider Name</b> subfield of the <b>Name
Data</b> field from the beginning of this structure. It MUST be an unsigned
32-bit integer in little-endian format.</p><p><b>Provider Type  (4 bytes): </b> This field
indicates the class of cryptographic algorithm associated with the public key
in the <span><a href="f436206d-ad1d-4ab1-bcc7-761d5c9738b6#gt_7a0f4b71-23ba-434f-b781-28053ed64879" data-linktype="relative-path">certificate</a></span>. It MUST
be set to the unsigned 32-bit number 0x00000001 (in little-endian format), to
signify an RSA public key. For more information, see <span><a href="https://go.microsoft.com/fwlink/?LinkId=90414" data-linktype="external">[RFC3280]</a></span>.</p><p><b>Flags (4 bytes): </b>This field SHOULD be set to
0, and its value MUST be ignored by the client.</p><p><b>Reserved (8 bytes): </b>This field is 2 rows total
in the preceding diagram and MUST be set to 0.</p><p><b>Key Specification (4 bytes): </b>This field
indicates the cryptographic capabilities associated with the public key in the
certificate. It MUST be set to the unsigned 32-bit number 0x00000001 (in
little-endian format), to signify that the key is usable for both signature and
encryption operations.</p><p><b>Name Data (variable): </b>This field MUST contain
the following items, in any order, at the locations indicated by the respective
preceding Offset fields. These items MUST be completely contained inside this
field and MUST NOT overlap each other. There MUST be no unused areas within
this field that span more than eight contiguous bytes. All unused bytes within
this field SHOULD be set to 0. Unused bytes MUST be ignored by the
implementation.</p><dl>
<dd>
<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="32">
  <p>Container
  Name (variable)</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>...</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>Provider Name
  (variable)</p>
  </td>
 </tr>
 <tr>
  <td colspan="32">
  <p>...</p>
  </td>
 </tr>
</tbody></table>
</dd>
<dd>
<p><b>Container Name
(variable): </b>This MUST be a null-terminated <span><a href="f436206d-ad1d-4ab1-bcc7-761d5c9738b6#gt_b069acb4-e364-453e-ac83-42d469bb339e" data-linktype="relative-path">Unicode string</a></span> in
UTF-16 encoding, representing a specific key container in the cryptographic
service provider (CSP) referred to by the provider name.</p>
</dd>
<dd>
<p><b>Provider Name (variable):
</b>This MUST be a null-terminated Unicode string in UTF-16 encoding,
representing the CSP associated with the public key contained in the
certificate. </p>
</dd></dl></div>