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| <div class="chapter"> |
| <div class="titlepage"><div><div><h1 class="title"> |
| <a name="trust-module"></a>Trust Policy Module</h1></div></div></div> |
| <div class="toc"><dl class="toc"> |
| <dt><span class="section"><a href="trust-module.html#trust-files">Paths loaded by the Module</a></span></dt> |
| <dt><span class="section"><a href="trust-nss.html">Using the Trust Policy Module with NSS</a></span></dt> |
| <dt><span class="section"><a href="trust-glib-networking.html">Using the Trust Policy Module with glib-networking</a></span></dt> |
| <dt><span class="section"><a href="trust-disable.html">Disabling the Trust Policy Module</a></span></dt> |
| </dl></div> |
| <p>The trust module provides system certificate anchors, blocklists |
| and other trust policy to crypto libraries applications. This |
| information is exposed as PKCS#11 objects.</p> |
| <p>You can use the <a class="link" href="trust.html" title="trust">trust</a> command line |
| tool to examine and modify the trust policy store.</p> |
| <div class="section"> |
| <div class="titlepage"><div><div><h2 class="title" style="clear: both"> |
| <a name="trust-files"></a>Paths loaded by the Module</h2></div></div></div> |
| <p>The trust module loads certificates and trust policy information |
| from preconfigured paths and allows them to be looked up via PKCS#11. |
| The input paths can be determined with using the following command:</p> |
| <pre class="programlisting"> |
| $ pkg-config --variable p11_trust_paths p11-kit-1 |
| /usr/share/p11-kit/trust:/etc/pki/trust |
| </pre> |
| <p>Files in the following formats are supported for loading by the |
| trust policy module:</p> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term">X.509 certificates</span></p></td> |
| <td><p>X.509 certificates in raw DER format. Does not |
| automatically contain trust policy information.</p></td> |
| </tr> |
| <tr> |
| <td><p><span class="term">PEM certificates</span></p></td> |
| <td><p>X.509 certificates in PEM format. These have a |
| <code class="literal">BEGIN CERTIFICATE</code> header. This file does not |
| automatically contain trust policy information.</p></td> |
| </tr> |
| <tr> |
| <td><p><span class="term">OpenSSL trust certificates</span></p></td> |
| <td><p>OpenSSL specific certificates in PEM format |
| that contain trust information. These have a |
| <code class="literal">BEGIN TRUSTED CERTIFICATE</code> PEM header. Both |
| trust anchor and blocklist information can be loaded |
| from these files.</p></td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p>If the input path is a file, then it is loaded. Certificate(s) in the |
| file are automatically treated as anchors, unless they contain alternate |
| trust policy information.</p> |
| <p>If the input path is a directory, files inside that directory are |
| parsed and loaded. If the file contains trust policy information (such as the |
| OpenSSL trust certificates) then it will be respected. Files without trust policy |
| information are not automatically marked as an anchor or distrusted.</p> |
| <p>In addition two optional subdirectories of the input path are loaded. Files |
| placed in the <code class="literal">anchors/</code> subdirectory become trust anchors |
| when they do not contain trust policy information. Files placed in the |
| <code class="literal">blocklist/</code> subdirectory are distrusted whether they |
| contain trust information or not.</p> |
| <p>The first input path becomes the first PKCS#11 token of the trust |
| module, and has the highest priority when callers search for trust |
| policy information.</p> |
| </div> |
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