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<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Certificate revocation list signers shall use <a href="type">
<font style="font-family: Courier New;">SubjectType</font>
</a> <font style="font-family: Courier New;">crl_signer<font style="font-family: Times New Roman;">.</font>
</font>
</font>
</li>
</p>
</ul>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">NOTE:<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />This definition substantially differs from the one in IEEE 1609.2 Draft D12 [<a href="REF">i.2</a>], clause 6.3.3.</font>
</p>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786195">6.4<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_subjectattribute">SubjectAttribute</a>
</a>
</font>
</h2>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">struct {</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />SubjectAttributeType<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />type;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />select(type) {</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />case verification_key:</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />case encryption_key:<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />PublicKey<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />key;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />case reconstruction_value:</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a href="type">EccPoint</a>
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />rv;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />case assurance_level:</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />SubjectAssurance<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />assurance_level;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />case its_aid_list:</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />IntX<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />its_aid_list<var>;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />case its_aid_ssp_list:</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />ItsAidSsp<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />its_aid_ssp_list<var>;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />unknown:</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />opaque<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />other_attribute<var>;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />}</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} SubjectAttribute;</font>
</p>
<p class="class_31"></p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This structure defines how to encode a subject attribute. These attributes serve the purpose of specifying the technical details of a certificate's subject. Depending on the value of <font style="font-family: Courier New;">type<font style="font-family: Times New Roman;">, the following additional data shall be given:</font>
</font>
</font>
</p>
<ul style="list-style-type: disc; margin: 0in 0in 0in 0.511806in; padding: 0pt; text-indent: -0.314583in; text-align: left;">
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">verification_key<font style="font-family: Times New Roman;"> and <font style="font-family: Courier New;">encryption_key<font style="font-family: Times New Roman;">: a public key contained in a <font style="font-family: Courier New;">PublicKey<font style="font-family: Times New Roman;"> structure shall be given.</font>
</font>
</font>
</font>
</font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">reconstruction_value<font style="font-family: Times New Roman;">: an ECC point contained in a <a href="type">
<font style="font-family: Courier New;">EccPoint</font>
</a> structure shall be given, which may be used for implicit certificates using ECQV [<a href="REF">i.5</a>].</font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">assurance_level<font style="font-family: Times New Roman;">: the assurance level for the subject contained in a <a href="type">
<font style="font-family: Courier New;">SubjectAssurance</font>
</a> structure shall be given.</font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">its_aid_list<font style="font-family: Times New Roman;">: ITS-AIDs contained in a variable-length vector of type <a href="type">
<font style="font-family: Courier New;">IntX</font>
</a> shall be given. </font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">its_aid_ssp_list<font style="font-family: Times New Roman;">: ITS-AIDs with associated SSPs contained in a variable-length vector of type <a href="type">
<font style="font-family: Courier New;">ItsAidSsp</font>
</a> shall be given. </font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">unknown<font style="font-family: Times New Roman;">: in all other cases, a variable-length vector containing <font style="font-family: Courier New;">opaque<font style="font-family: Times New Roman;"> data shall be given.</font>
</font>
</font>
</font>
</li>
</p>
</ul>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">NOTE:<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />This definition is not available in IEEE 1609.2 Draft D12 [<a href="REF">i.2</a>].</font>
</p>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786196">6.5<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_subjectattributetype">SubjectAttributeType</a>
</a>
</font>
</h2>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">enum {</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />verification_key(0),</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />encryption_key(1),</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />assurance_level(2),</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />reconstruction_value(3),</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />its_aid_list(32),</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />its_aid_ssp_list(33),</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />(2^8-1)</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} SubjectAttributeType;</font>
</p>
<p class="class_31"></p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This enumeration lists the possible types of subject attributes.</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">NOTE:<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />This definition is not available in IEEE 1609.2 Draft D12 [<a href="REF">i.2</a>].</font>
</p>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786197">6.6<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_subjectassurance">SubjectAssurance</a>
</a>
</font>
</h2>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">opaque<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />SubjectAssurance;</font>
</p>
<p class="class_31"></p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This field contains the ITS‑S's assurance, which denotes the ITS‑S's security of both the platform and storage of secret keys as well as the confidence in this assessment.</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This field shall be encoded as defined in table <a href="">5</a>, where "A" denotes bit fields specifying an assurance level, "R" reserved bit fields and "C" bit fields specifying the confidence.</font>
</p>
<p class="class_29">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Table <a id="ref_tab_subject_assurance">5</a>: Bitwise encoding of subject assurance</font>
</p>
<p class="class_30">
<table style="border-collapse: collapse; border-spacing: 0pt;">
<tbody>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 0.933333in; vertical-align: top;">
<p class="class_30">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Bit number</font>
</p>
</td> <td style="border: 1px solid black; width: 0.39375in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">7</font>
</p>
</td> <td style="border: 1px solid black; width: 0.39375in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">6</font>
</p>
</td> <td style="border: 1px solid black; width: 0.39375in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">5</font>
</p>
</td> <td style="border: 1px solid black; width: 0.39375in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">4</font>
</p>
</td> <td style="border: 1px solid black; width: 0.39375in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">3</font>
</p>
</td> <td style="border: 1px solid black; width: 0.492361in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">2</font>
</p>
</td> <td style="border: 1px solid black; width: 0.492361in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">1</font>
</p>
</td> <td style="border: 1px solid black; width: 0.39375in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">0</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 0.933333in; vertical-align: top;">
<p class="class_30">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Interpretation</font>
</p>
</td> <td style="border: 1px solid black; width: 0.39375in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">A</font>
</p>
</td> <td style="border: 1px solid black; width: 0.39375in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">A</font>
</p>
</td> <td style="border: 1px solid black; width: 0.39375in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">A</font>
</p>
</td> <td style="border: 1px solid black; width: 0.39375in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">R</font>
</p>
</td> <td style="border: 1px solid black; width: 0.39375in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">R</font>
</p>
</td> <td style="border: 1px solid black; width: 0.492361in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">R</font>
</p>
</td> <td style="border: 1px solid black; width: 0.492361in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">C</font>
</p>
</td> <td style="border: 1px solid black; width: 0.39375in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">C</font>
</p>
</td>
</tr>
</tbody>
</table>
</p>
<p class="class_5"></p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">In table <a href="">5</a>, bit number 0 denotes the least significant bit. Bit 7 to bit 5 denote the ITS-S's assurance levels, bit 4 to bit 2 are reserved for future use and bit 1 and bit 0 denote the confidence.</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">The specification of these assurance levels as well as the encoding of the confidence levels is outside the scope of the present document. The default (no assurance) shall be all bits set to 0.</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">NOTE 1:<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />This definition is not available in IEEE 1609.2 Draft D12 [<a href="REF">i.2</a>].</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">NOTE 2:<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />A process should be defined how to evaluate each implementation and how to assign a corresponding subject assurance according to the evaluation result(s). However, this process is out of scope of the present document.</font>
</p>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786198">6.7<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_validityrestriction">ValidityRestriction</a>
</a>
</font>
</h2>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">struct {</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />ValidityRestrictionType type;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />select(type){</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />case time_end:</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />Time32<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />end_validity;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />case time_start_and_end:</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />Time32<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />start_validity;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />Time32<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />end_validity;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />case time_start_and_duration:</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />Time32<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />start_validity;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />Duration<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />duration;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />case region:</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />GeographicRegion<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />region;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />unknown:</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />opaque<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />data<var>;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />}</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} ValidityRestriction;</font>
</p>
<p class="class_31"></p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This structure defines ways to restrict the validity of a certificate depending on the value of <font style="font-family: Courier New;">type<font style="font-family: Times New Roman;">:</font>
</font>
</font>
</p>
<ul style="list-style-type: disc; margin: 0in 0in 0in 0.511806in; padding: 0pt; text-indent: -0.314583in; text-align: left;">
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">time_end<font style="font-family: Times New Roman;">: the expiration date for the associated certificate contained in a <a href="type">
<font style="font-family: Courier New;">Time32</font>
</a> structure shall be given.</font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">time_start_and_end<font style="font-family: Times New Roman;">: the beginning of the validity contained in a <a href="type">
<font style="font-family: Courier New;">Time32</font>
</a> structure and the expiration date contained in another <a href="type">
<font style="font-family: Courier New;">Time32</font>
</a> structure shall be given.</font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">time_start_and_duration<font style="font-family: Times New Roman;">: the beginning of the validity contained in a <a href="type">
<font style="font-family: Courier New;">Time32</font>
</a> structure and the duration of validity contained in a <a href="type">
<font style="font-family: Courier New;">Duration</font>
</a> structure shall be given.</font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">region<font style="font-family: Times New Roman;">: the region the certificate is valid in contained in a <a href="type">
<font style="font-family: Courier New;">GeographicRegion</font>
</a> structure shall be given.</font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">unknown<font style="font-family: Times New Roman;">: in all other cases, a variable-length vector containing <font style="font-family: Courier New;">opaque<font style="font-family: Times New Roman;"> data shall be given.</font>
</font>
</font>
</font>
</li>
</p>
</ul>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_6c2640ff-fb9f-40a1-8f28-844633fefa42"><a class="requality_id" id="id_6c2640ff-fb9f-40a1-8f28-844633fefa42" name="6c2640ff-fb9f-40a1-8f28-844633fefa42"></a>A valid certificate shall contain exactly one validity restriction of type </span><font style="font-family: Courier New;"><span class="requality_text id_6c2640ff-fb9f-40a1-8f28-844633fefa42">time_end</span><font style="font-family: Times New Roman;"><span class="requality_text id_6c2640ff-fb9f-40a1-8f28-844633fefa42">, </span><font style="font-family: Courier New;"><span class="requality_text id_6c2640ff-fb9f-40a1-8f28-844633fefa42">time_start_and_end</span><font style="font-family: Times New Roman;"><span class="requality_text id_6c2640ff-fb9f-40a1-8f28-844633fefa42">, or </span><font style="font-family: Courier New;"><span class="requality_text id_6c2640ff-fb9f-40a1-8f28-844633fefa42">time_start_and_duration</span><font style="font-family: Times New Roman;"><span class="requality_text id_6c2640ff-fb9f-40a1-8f28-844633fefa42">.</span></font>
</font>
</font>
</font>
</font>
</font>
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">NOTE:<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />This definition is not available in IEEE 1609.2 Draft D12 [<a href="REF">i.2</a>].</font>
</p>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786199">6.8<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_validityrestrictiontype">ValidityRestrictionType</a>
</a>
</font>
</h2>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">enum { </font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />time_end(0),</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />time_start_and_end(1),</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />time_start_and_duration(2),</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />region(3),</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />(2^8-1)</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} ValidityRestrictionType;</font>
</p>
<p class="class_31"></p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This enumeration lists the possible types of restrictions to a certificate's validity.</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">NOTE:<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />This definition is not available in IEEE 1609.2 Draft D12 [<a href="REF">i.2</a>].</font>
</p>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786200">6.9<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="_Ref261257051">ItsAidSsp</a>
</a>
</font>
</h2>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">struct {</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />IntX<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />its_aid;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />opaque<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />service_specific_permissions<var>;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} <a href="">ItsAidSsp</a>;</font>
</p>
<p class="class_31"></p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This structure defines how to encode an ITS-AID with associated Service Specific Permissions (SSP). <font style="font-family: Courier New;"><span class="requality_text id_3a85743b-2d03-42a9-844a-56a299b12f74"><a class="requality_id" id="id_3a85743b-2d03-42a9-844a-56a299b12f74" name="3a85743b-2d03-42a9-844a-56a299b12f74"></a>service_specific_permissions</span><font style="font-family: Times New Roman;"><span class="requality_text id_3a85743b-2d03-42a9-844a-56a299b12f74"> shall have a maximum length of 31 octets.</span> The definition of SSPs is out of scope of the present document.</font>
</font>
</font>
</p>
<p class="class_40">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">NOTE:<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />This definition is similar to the one in IEEE 1609.2 Draft D12 [<a href="REF">i.2</a>], clause 6.3.24, but uses different naming, a slightly more flexible encoding of the ITS-AID.</font>
</p>
<h1 class="class_24">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786201">7<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />Security profiles</a>
</font>
</h1>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786202">7.1<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" /><span class="requality_text id_e1308a28-bfa6-40e1-b39e-f1b64d00509d"><a class="requality_id" id="id_e1308a28-bfa6-40e1-b39e-f1b64d00509d" name="e1308a28-bfa6-40e1-b39e-f1b64d00509d"></a>Security profile for CAMs</span></a>
</font>
</h2>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This clause defines which fields shall be included in the SecuredMessage structure for Cooperative Awareness Messages (CAMs) as well as the scope of application of cryptographic features applied to the header. </font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_0bf26c42-7a43-4f6b-8bbf-3f61249999e4"><a class="requality_id" id="id_0bf26c42-7a43-4f6b-8bbf-3f61249999e4" name="0bf26c42-7a43-4f6b-8bbf-3f61249999e4"></a>These </span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_0bf26c42-7a43-4f6b-8bbf-3f61249999e4">HeaderField</span></font>
</a> <span class="requality_text id_0bf26c42-7a43-4f6b-8bbf-3f61249999e4">elements shall be included in all CAMs.</span> <span class="requality_text id_c3f4369c-b117-4656-8932-603e7787cbc4"><a class="requality_id" id="id_c3f4369c-b117-4656-8932-603e7787cbc4" name="c3f4369c-b117-4656-8932-603e7787cbc4"></a>With the exception of </span><font style="font-family: Courier New;"><span class="requality_text id_c3f4369c-b117-4656-8932-603e7787cbc4">signer_info</span><font style="font-family: Times New Roman;"><span class="requality_text id_c3f4369c-b117-4656-8932-603e7787cbc4">, which is encoded first, all </span><font style="font-family: Courier New;"><span class="requality_text id_c3f4369c-b117-4656-8932-603e7787cbc4">header_field</span><font style="font-family: Times New Roman;"><span class="requality_text id_c3f4369c-b117-4656-8932-603e7787cbc4"> elements shall be included in ascending order according to the numbering of the enumeration of the according type structure</span>:</font>
</font>
</font>
</font>
</font>
</p>
<ul style="list-style-type: disc; margin: 0in 0in 0in 0.511806in; padding: 0pt; text-indent: -0.314583in; text-align: left;">
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_a5f4f412-efbc-4a6d-a05d-4170914778ea"><a class="requality_id" id="id_a5f4f412-efbc-4a6d-a05d-4170914778ea" name="a5f4f412-efbc-4a6d-a05d-4170914778ea"></a><font style="font-family: Courier New;">signer_info</font>: this field shall contain exactly one field of the types <font style="font-family: Courier New;">certificate_digest_with_sha256, certificate_chain</font> or <font style="font-family: Courier New;">certificate</font></span>, according to the following rules:</font>
</li>
</p>
</ul>
<ul style="margin: 0in 0in 0in 0.827083in; padding: 0pt; text-indent: -0.315278in; text-align: left;">
<p class="class_44 b2+"> <li class="class_36">
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_d485e010-0a82-4bfe-9dff-8d8f09d64fa5"><a class="requality_id" id="id_d485e010-0a82-4bfe-9dff-8d8f09d64fa5" name="d485e010-0a82-4bfe-9dff-8d8f09d64fa5"></a>In the normal case, the </span><font style="font-family: Courier New;"><span class="requality_text id_d485e010-0a82-4bfe-9dff-8d8f09d64fa5">signer_info</span><font style="font-family: Times New Roman;"><span class="requality_text id_d485e010-0a82-4bfe-9dff-8d8f09d64fa5"> field of type </span><font style="font-family: Courier New;"><span class="requality_text id_d485e010-0a82-4bfe-9dff-8d8f09d64fa5">certificate_digest_with_sha256</span><font style="font-family: Times New Roman;"><span class="requality_text id_d485e010-0a82-4bfe-9dff-8d8f09d64fa5"> shall be included</span>.</font>
</font>
</font>
</font>
</font>
</li>
</p>
<p class="class_44 b2+"> <li class="class_36">
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_9bebff2c-a4fa-4aac-80a5-93c85369ae25"><a class="requality_id" id="id_9bebff2c-a4fa-4aac-80a5-93c85369ae25" name="9bebff2c-a4fa-4aac-80a5-93c85369ae25"></a>Instead of including a field of type </span><font style="font-family: Courier New;"><span class="requality_text id_9bebff2c-a4fa-4aac-80a5-93c85369ae25">certificate_digest_with_sha256</span><font style="font-family: Times New Roman;"><span class="requality_text id_9bebff2c-a4fa-4aac-80a5-93c85369ae25">, a </span><font style="font-family: Courier New;"><span class="requality_text id_9bebff2c-a4fa-4aac-80a5-93c85369ae25">signer_info</span><font style="font-family: Times New Roman;"><span class="requality_text id_9bebff2c-a4fa-4aac-80a5-93c85369ae25"> field of type </span><font style="font-family: Courier New;"><span class="requality_text id_9bebff2c-a4fa-4aac-80a5-93c85369ae25">certificate</span><font style="font-family: Times New Roman;"><span class="requality_text id_9bebff2c-a4fa-4aac-80a5-93c85369ae25"> shall be included one second after the last inclusion of a field of type </span><font style="font-family: Courier New;"><span class="requality_text id_9bebff2c-a4fa-4aac-80a5-93c85369ae25">certificate</span><font style="font-family: Times New Roman;"><span class="requality_text id_9bebff2c-a4fa-4aac-80a5-93c85369ae25">.</span></font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</li>
</p>
<p class="class_44 b2+"> <li class="class_36">
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_6a3eda29-6ac0-4512-b580-2579faf5eb0b"><a class="requality_id" id="id_6a3eda29-6ac0-4512-b580-2579faf5eb0b" name="6a3eda29-6ac0-4512-b580-2579faf5eb0b"></a>If the ITS-S receives a CAM from a previously unknown certificate, it shall include a field of type </span><font style="font-family: Courier New;"><span class="requality_text id_6a3eda29-6ac0-4512-b580-2579faf5eb0b">certificate</span><font style="font-family: Times New Roman;"><span class="requality_text id_6a3eda29-6ac0-4512-b580-2579faf5eb0b"> immediately in its next CAM, instead of including a field of type </span><font style="font-family: Courier New;"><span class="requality_text id_6a3eda29-6ac0-4512-b580-2579faf5eb0b">certificate_digest_with_sha256</span><font style="font-family: Times New Roman;">. <span class="requality_text id_471f67f8-42d9-443f-ba6f-b5a769e6843d"><a class="requality_id" id="id_471f67f8-42d9-443f-ba6f-b5a769e6843d" name="471f67f8-42d9-443f-ba6f-b5a769e6843d"></a>In this case, the timer for the next inclusion of a field of type </span><font style="font-family: Courier New;"><span class="requality_text id_471f67f8-42d9-443f-ba6f-b5a769e6843d">certificate</span><font style="font-family: Times New Roman;"><span class="requality_text id_471f67f8-42d9-443f-ba6f-b5a769e6843d"> shall be restarted.</span></font>
</font>
</font>
</font>
</font>
</font>
</font>
</li>
</p>
<p class="class_44 b2+"> <li class="class_36">
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">If an ITS-S receives a CAM whose security header includes a <font style="font-family: Courier New;">HeaderField<font style="font-family: Times New Roman;"> of type <font style="font-family: Courier New;">request_unrecognized_certificate<font style="font-family: Times New Roman;">, then the ITS‑S shall evaluate the list of <a href="type">
<font style="font-family: Courier New;">HashedId3</font>
</a> digests included in that field. <span class="requality_text id_4a051d5f-3c4f-4949-a598-2316e2f86f51"><a class="requality_id" id="id_4a051d5f-3c4f-4949-a598-2316e2f86f51" name="4a051d5f-3c4f-4949-a598-2316e2f86f51"></a><span class="requality_text id_e487829f-4c10-4b03-8738-9b266ee1070d"><a class="requality_id" id="id_e487829f-4c10-4b03-8738-9b266ee1070d" name="e487829f-4c10-4b03-8738-9b266ee1070d"></a>If the ITS-S finds a </span></span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_4a051d5f-3c4f-4949-a598-2316e2f86f51"><span class="requality_text id_e487829f-4c10-4b03-8738-9b266ee1070d">HashedId3</span></span></font>
</a> <span class="requality_text id_4a051d5f-3c4f-4949-a598-2316e2f86f51"><span class="requality_text id_e487829f-4c10-4b03-8738-9b266ee1070d">of its own, currently used authorization ticket and not of the authorization authority in that list, it shall include a </span></span><font style="font-family: Courier New;"><span class="requality_text id_4a051d5f-3c4f-4949-a598-2316e2f86f51"><span class="requality_text id_e487829f-4c10-4b03-8738-9b266ee1070d">signer_info</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_4a051d5f-3c4f-4949-a598-2316e2f86f51"><span class="requality_text id_e487829f-4c10-4b03-8738-9b266ee1070d"> field of type </span></span><font style="font-family: Courier New;"><span class="requality_text id_4a051d5f-3c4f-4949-a598-2316e2f86f51"><span class="requality_text id_e487829f-4c10-4b03-8738-9b266ee1070d">certificate</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_4a051d5f-3c4f-4949-a598-2316e2f86f51"><span class="requality_text id_e487829f-4c10-4b03-8738-9b266ee1070d"> immediately in its next CAM, instead of including a </span></span><font style="font-family: Courier New;"><span class="requality_text id_4a051d5f-3c4f-4949-a598-2316e2f86f51"><span class="requality_text id_e487829f-4c10-4b03-8738-9b266ee1070d">signer_info</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_4a051d5f-3c4f-4949-a598-2316e2f86f51"><span class="requality_text id_e487829f-4c10-4b03-8738-9b266ee1070d"> field of type </span></span><font style="font-family: Courier New;"><span class="requality_text id_4a051d5f-3c4f-4949-a598-2316e2f86f51"><span class="requality_text id_e487829f-4c10-4b03-8738-9b266ee1070d">certificate_digest_with_sha256</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_4a051d5f-3c4f-4949-a598-2316e2f86f51"><span class="requality_text id_e487829f-4c10-4b03-8738-9b266ee1070d">.</span></span> <span class="requality_text id_87da292b-e069-4b91-b17b-acc7deb14f03"><a class="requality_id" id="id_87da292b-e069-4b91-b17b-acc7deb14f03" name="87da292b-e069-4b91-b17b-acc7deb14f03"></a><span class="requality_text id_ee6c482c-24aa-416f-82b4-9a84d6b200e0"><a class="requality_id" id="id_ee6c482c-24aa-416f-82b4-9a84d6b200e0" name="ee6c482c-24aa-416f-82b4-9a84d6b200e0"></a>If the ITS-S finds a </span></span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_87da292b-e069-4b91-b17b-acc7deb14f03"><span class="requality_text id_ee6c482c-24aa-416f-82b4-9a84d6b200e0">HashedId3</span></span></font>
</a> <span class="requality_text id_87da292b-e069-4b91-b17b-acc7deb14f03"><span class="requality_text id_ee6c482c-24aa-416f-82b4-9a84d6b200e0">of its own, currently used authorization authority in that list, it shall include a </span></span><font style="font-family: Courier New;"><span class="requality_text id_87da292b-e069-4b91-b17b-acc7deb14f03"><span class="requality_text id_ee6c482c-24aa-416f-82b4-9a84d6b200e0">signer_info</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_87da292b-e069-4b91-b17b-acc7deb14f03"><span class="requality_text id_ee6c482c-24aa-416f-82b4-9a84d6b200e0"> field of type </span></span><font style="font-family: Courier New;"><span class="requality_text id_87da292b-e069-4b91-b17b-acc7deb14f03"><span class="requality_text id_ee6c482c-24aa-416f-82b4-9a84d6b200e0">certificate_chain</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_87da292b-e069-4b91-b17b-acc7deb14f03"><span class="requality_text id_ee6c482c-24aa-416f-82b4-9a84d6b200e0"> containing the currently used authorization ticket and authorization authority certificate immediately in its next CAM, instead of including a </span></span><font style="font-family: Courier New;"><span class="requality_text id_87da292b-e069-4b91-b17b-acc7deb14f03"><span class="requality_text id_ee6c482c-24aa-416f-82b4-9a84d6b200e0">signer_info</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_87da292b-e069-4b91-b17b-acc7deb14f03"><span class="requality_text id_ee6c482c-24aa-416f-82b4-9a84d6b200e0"> field of type </span></span><font style="font-family: Courier New;"><span class="requality_text id_87da292b-e069-4b91-b17b-acc7deb14f03"><span class="requality_text id_ee6c482c-24aa-416f-82b4-9a84d6b200e0">certificate_digest_with_sha256</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_87da292b-e069-4b91-b17b-acc7deb14f03"><span class="requality_text id_ee6c482c-24aa-416f-82b4-9a84d6b200e0">.</span></span></font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</li>
</p>
</ul>
<ul style="list-style-type: disc; margin: 0in 0in 0in 0.511806in; padding: 0pt; text-indent: -0.314583in; text-align: left;">
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">generation_time<font style="font-family: Times New Roman;">: this field shall contain the current absolute time. <span class="requality_text id_5d915e97-a60c-4999-8820-e69c5f87128c"><a class="requality_id" id="id_5d915e97-a60c-4999-8820-e69c5f87128c" name="5d915e97-a60c-4999-8820-e69c5f87128c"></a>The </span><font style="font-family: Courier New;"><span class="requality_text id_5d915e97-a60c-4999-8820-e69c5f87128c">generation_time</span><font style="font-family: Times New Roman;"><span class="requality_text id_5d915e97-a60c-4999-8820-e69c5f87128c"> is valid, if it is in the validity period of the certificate referenced by the </span><font style="font-family: Courier New;"><span class="requality_text id_5d915e97-a60c-4999-8820-e69c5f87128c">signer_info</span><font style="font-family: Times New Roman;"><span class="requality_text id_5d915e97-a60c-4999-8820-e69c5f87128c">.</span></font>
</font>
</font>
</font>
</font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">its_aid<font style="font-family: Times New Roman;">: <span class="requality_text id_ea754a75-9530-4fd0-ae34-bf241af669ad"><a class="requality_id" id="id_ea754a75-9530-4fd0-ae34-bf241af669ad" name="ea754a75-9530-4fd0-ae34-bf241af669ad"></a>this field shall encode the ITS-AID for CAMs</span> according to ETSI TS 102 965 [<a href="REF">7</a>].</font>
</font>
</li>
</p>
</ul>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">The <font style="font-family: Courier New;">HeaderField<font style="font-family: Times New Roman;"> element <font style="font-family: Courier New;">request_unrecognized_certificate<font style="font-family: Times New Roman;"> shall be included if an ITS-S received CAMs from other ITS-Ss, which the ITS-S has never encountered before and which included only a <font style="font-family: Courier New;">signer_info <font style="font-family: Times New Roman;">field of type <font style="font-family: Courier New;">certificate_digest_with_sha256 <font style="font-family: Times New Roman;">instead of a <font style="font-family: Courier New;">signer_info<font style="font-family: Times New Roman;"> HeaderField of type <font style="font-family: Courier New;">certificate<font style="font-family: Times New Roman;">. In this case, the signature of the received CAMs cannot be verified because the verification key is missing.<span class="requality_text id_3ae26d61-824d-4a0c-81fe-3198413ca03c"><a class="requality_id" id="id_3ae26d61-824d-4a0c-81fe-3198413ca03c" name="3ae26d61-824d-4a0c-81fe-3198413ca03c"></a> The field </span><font style="font-family: Courier New;"><span class="requality_text id_3ae26d61-824d-4a0c-81fe-3198413ca03c">digests<var></span><font style="font-family: Times New Roman;"><span class="requality_text id_3ae26d61-824d-4a0c-81fe-3198413ca03c"> in the structure of </span><font style="font-family: Courier New;"><span class="requality_text id_3ae26d61-824d-4a0c-81fe-3198413ca03c">request_unrecognized_certificate</span><font style="font-family: Times New Roman;"><span class="requality_text id_3ae26d61-824d-4a0c-81fe-3198413ca03c"> shall be filled with a list of </span><a href="type"><span class="requality_text id_3ae26d61-824d-4a0c-81fe-3198413ca03c">
</span><font style="font-family: Courier New;"><span class="requality_text id_3ae26d61-824d-4a0c-81fe-3198413ca03c">HashedId3</span></font><span class="requality_text id_3ae26d61-824d-4a0c-81fe-3198413ca03c">
</span></a><span class="requality_text id_3ae26d61-824d-4a0c-81fe-3198413ca03c"> elements of the missing ITS-S certificates. </span></font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">NOTE 1:<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a href="type">
<font style="font-family: Courier New;">HashedId3</font>
</a> elements can be formed by using the least significant three bytes of the corresponding <font style="font-family: Courier New;">HashedId8.</font>
</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_42e1c2c7-4b3f-4b5f-b9b7-39181507295d"><a class="requality_id" id="id_42e1c2c7-4b3f-4b5f-b9b7-39181507295d" name="42e1c2c7-4b3f-4b5f-b9b7-39181507295d"></a>None of the possible </span><font style="font-family: Courier New;"><span class="requality_text id_42e1c2c7-4b3f-4b5f-b9b7-39181507295d">HeaderField</span><font style="font-family: Times New Roman;"><span class="requality_text id_42e1c2c7-4b3f-4b5f-b9b7-39181507295d"> cases shall be included more than once</span>. <span class="requality_text id_d3aa3d7e-ae6e-4935-8052-474d4264f440"><a class="requality_id" id="id_d3aa3d7e-ae6e-4935-8052-474d4264f440" name="d3aa3d7e-ae6e-4935-8052-474d4264f440"></a><span class="requality_text id_5d1ff90b-ad9c-416c-900b-030397b6b6ee"><a class="requality_id" id="id_5d1ff90b-ad9c-416c-900b-030397b6b6ee" name="5d1ff90b-ad9c-416c-900b-030397b6b6ee"></a>All other </span></span><font style="font-family: Courier New;"><span class="requality_text id_d3aa3d7e-ae6e-4935-8052-474d4264f440"><span class="requality_text id_5d1ff90b-ad9c-416c-900b-030397b6b6ee">HeaderField</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_d3aa3d7e-ae6e-4935-8052-474d4264f440"><span class="requality_text id_5d1ff90b-ad9c-416c-900b-030397b6b6ee"> types defined in clause 5 shall not be used</span></span>. Future <font style="font-family: Courier New;">HeaderField<font style="font-family: Times New Roman;"> types may be included. <span class="requality_text id_07ea39bb-bbcf-444f-aa00-f63bdaabc1e1"><a class="requality_id" id="id_07ea39bb-bbcf-444f-aa00-f63bdaabc1e1" name="07ea39bb-bbcf-444f-aa00-f63bdaabc1e1"></a>Any other </span><font style="font-family: Courier New;"><span class="requality_text id_07ea39bb-bbcf-444f-aa00-f63bdaabc1e1">HeaderField</span><font style="font-family: Times New Roman;"><span class="requality_text id_07ea39bb-bbcf-444f-aa00-f63bdaabc1e1"> types included shall not be used to determine the validity of the message.</span></font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_56909702-98b3-496b-8efe-03f8e0818e1f"><a class="requality_id" id="id_56909702-98b3-496b-8efe-03f8e0818e1f" name="56909702-98b3-496b-8efe-03f8e0818e1f"></a><span class="requality_text id_464098d6-4402-43a2-a11b-e6c0ebb97df7"><a class="requality_id" id="id_464098d6-4402-43a2-a11b-e6c0ebb97df7" name="464098d6-4402-43a2-a11b-e6c0ebb97df7"></a>A </span></span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_56909702-98b3-496b-8efe-03f8e0818e1f"><span class="requality_text id_464098d6-4402-43a2-a11b-e6c0ebb97df7">Payload</span></span></font>
</a> <span class="requality_text id_56909702-98b3-496b-8efe-03f8e0818e1f"><span class="requality_text id_464098d6-4402-43a2-a11b-e6c0ebb97df7">element shall be included for all CAMs. This element shall be of type </span></span><font style="font-family: Courier New;"><span class="requality_text id_56909702-98b3-496b-8efe-03f8e0818e1f"><span class="requality_text id_464098d6-4402-43a2-a11b-e6c0ebb97df7">signed</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_56909702-98b3-496b-8efe-03f8e0818e1f"><span class="requality_text id_464098d6-4402-43a2-a11b-e6c0ebb97df7"> and contain the CAM payload.</span></span></font>
</font>
</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_941a4326-9137-4192-bc9e-bf6483589838"><a class="requality_id" id="id_941a4326-9137-4192-bc9e-bf6483589838" name="941a4326-9137-4192-bc9e-bf6483589838"></a><span class="requality_text id_191a229d-de15-4b5a-874c-682846c5d70c"><a class="requality_id" id="id_191a229d-de15-4b5a-874c-682846c5d70c" name="191a229d-de15-4b5a-874c-682846c5d70c"></a>These </span></span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_941a4326-9137-4192-bc9e-bf6483589838"><span class="requality_text id_191a229d-de15-4b5a-874c-682846c5d70c">TrailerField</span></span></font>
</a> <span class="requality_text id_941a4326-9137-4192-bc9e-bf6483589838"><span class="requality_text id_191a229d-de15-4b5a-874c-682846c5d70c">elements shall be included in all CAMs</span></span>:</font>
</p>
<ul style="list-style-type: disc; margin: 0in 0in 0in 0.511806in; padding: 0pt; text-indent: -0.314583in; text-align: left;">
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><a class="requality_id" id="id_9476745e-a4d4-4c64-bf2d-6648d7ef5312" name="9476745e-a4d4-4c64-bf2d-6648d7ef5312"></a><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787"><a class="requality_id" id="id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787" name="0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787"></a>signature</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787">: this field shall contain a signature calculated over these fields of the </span></span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787">SecuredMessage</span></span></font>
</a> <span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787">data structure:</span></span></font>
</font>
</li>
</p>
</ul>
<ul style="margin: 0in 0in 0in 0.827083in; padding: 0pt; text-indent: -0.315278in; text-align: left;">
<p class="class_45 b2+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787">protocol_version</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787">.</span></span></font>
</font>
</li>
</p>
<p class="class_44 b2+"> <li class="class_36">
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787">The variable-length vector </span></span><font style="font-family: Courier New;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787">header_fields</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787"> including its length.</span></span></font>
</font>
</font>
</li>
</p>
<p class="class_44 b2+"> <li class="class_36">
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787">The complete </span></span><font style="font-family: Courier New;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787">payload_field</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787"> field. </span></span></font>
</font>
</font>
</li>
</p>
<p class="class_44 b2+"> <li class="class_36">
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787">The length of the variable-length vector </span></span><font style="font-family: Courier New;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787">trailer_fields</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787"> and the type of the </span></span><font style="font-family: Courier New;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787">signature</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_9476745e-a4d4-4c64-bf2d-6648d7ef5312"><span class="requality_text id_0b1ec607-c4bc-4ac5-a8e8-7c7bce9cd787"> trailer field.</span></span></font>
</font>
</font>
</font>
</font>
</li>
</p>
</ul>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_6cfc4b69-1f31-4798-a610-91cd418937b1"><a class="requality_id" id="id_6cfc4b69-1f31-4798-a610-91cd418937b1" name="6cfc4b69-1f31-4798-a610-91cd418937b1"></a><span class="requality_text id_3f1cd606-cf67-4db0-ac19-64fc7452d17a"><a class="requality_id" id="id_3f1cd606-cf67-4db0-ac19-64fc7452d17a" name="3f1cd606-cf67-4db0-ac19-64fc7452d17a"></a>CAMs shall not be encrypted. </span></span></font>
</p>
<p class="class_46">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">NOTE 2:<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />Table <a href="ref">6</a> illustrates which parts of a <font style="font-family: Courier New;">SecuredMessage<font style="font-family: Times New Roman;"> are taken into account when generating the signature of a message.</font>
</font>
</font>
</p>
<p class="class_29">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Table <a id="ref_tab_example_signature">6</a>: Example for the ECDSA signature generation for a SecuredMessage</font>
</p>
<p class="class_30">
<table style="border-collapse: collapse; border-spacing: 0pt;">
<tbody>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Element</font>
</p>
</td> <td style="border: 1px solid black; width: 2.21319in;">
<p class="class_30">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Description</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">SecuredMessage</font>
</p>
</td> <td style="border: 1px solid black; width: 2.21319in; vertical-align: top;">
<p class="class_30"></p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />uint8 protocol_version</font>
</p>
</td> <td rowspan="7" style="border: 1px solid black; width: 2.21319in;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Covered by the signature</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />HeaderField header_fields<var></font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />…</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />Payload payload_fields<var></font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />…</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />TrailerField trailer_fields<var></font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />TrailerFieldType type</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />PublicKeyAlgorithm algorithm</font>
</p>
</td> <td rowspan="4" style="border: 1px solid black; width: 2.21319in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Not covered by the signature</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />EcdsaSignature ecdsa_signature</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />EccPoint R</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />EccPointType type</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />opaque x[32]</font>
</p>
</td> <td rowspan="2" style="border: 1px solid black; width: 2.21319in; vertical-align: top;">
<p class="class_17">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">ECDSA signature (r,s)</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 3.24861in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />opaque s[32]</font>
</p>
</td>
</tr>
</tbody>
</table>
</p>
<p class="class_47"></p>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786203">7.2<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" /><span class="requality_text id_fd7fa291-7c90-44a8-9620-8119b8da89a3"><a class="requality_id" id="id_fd7fa291-7c90-44a8-9620-8119b8da89a3" name="fd7fa291-7c90-44a8-9620-8119b8da89a3"></a><span class="requality_text id_fd2e4af3-d17f-4622-a387-1c5bdbc338c2"><a class="requality_id" id="id_fd2e4af3-d17f-4622-a387-1c5bdbc338c2" name="fd2e4af3-d17f-4622-a387-1c5bdbc338c2"></a>Security profile for DENMs</span></span></a>
</font>
</h2>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This clause defines which fields shall always be included in the SecuredMessage structure for Decentralized Environmental Notification Messages (DENMs) as well as the scope of application of cryptographic features applied to the header. </font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_a0be0ced-fc4e-4908-88d5-725c8a98f98f"><a class="requality_id" id="id_a0be0ced-fc4e-4908-88d5-725c8a98f98f" name="a0be0ced-fc4e-4908-88d5-725c8a98f98f"></a><span class="requality_text id_322e2d54-6950-4e35-856e-87281b4b3aa6"><a class="requality_id" id="id_322e2d54-6950-4e35-856e-87281b4b3aa6" name="322e2d54-6950-4e35-856e-87281b4b3aa6"></a>These </span></span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_a0be0ced-fc4e-4908-88d5-725c8a98f98f"><span class="requality_text id_322e2d54-6950-4e35-856e-87281b4b3aa6">HeaderField</span></span></font>
</a> <span class="requality_text id_a0be0ced-fc4e-4908-88d5-725c8a98f98f"><span class="requality_text id_322e2d54-6950-4e35-856e-87281b4b3aa6">elements shall be included in all DENMs.</span></span> <span class="requality_text id_ea7d765f-d996-4ffc-b9d6-5e87031b59e1"><a class="requality_id" id="id_ea7d765f-d996-4ffc-b9d6-5e87031b59e1" name="ea7d765f-d996-4ffc-b9d6-5e87031b59e1"></a><span class="requality_text id_6694e8a1-e064-4703-a0d5-c44221f8cfb4"><a class="requality_id" id="id_6694e8a1-e064-4703-a0d5-c44221f8cfb4" name="6694e8a1-e064-4703-a0d5-c44221f8cfb4"></a>With the exception of signer_info, which is encoded first, all </span><font style="font-family: Courier New;">header_field</font> elements shall be included in ascending order according to the numbering of the enumeration of the according type structure:</span>
</font>
</p>
<ul style="list-style-type: disc; margin: 0in 0in 0in 0.511806in; padding: 0pt; text-indent: -0.314583in; text-align: left;">
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_948cc4ca-06c7-4303-83f0-599de282ce03"><a class="requality_id" id="id_948cc4ca-06c7-4303-83f0-599de282ce03" name="948cc4ca-06c7-4303-83f0-599de282ce03"></a><span class="requality_text id_6e73abdf-644e-40f0-ac1c-9b8dccb30af0"><a class="requality_id" id="id_6e73abdf-644e-40f0-ac1c-9b8dccb30af0" name="6e73abdf-644e-40f0-ac1c-9b8dccb30af0"></a>signer_info</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_948cc4ca-06c7-4303-83f0-599de282ce03"><span class="requality_text id_6e73abdf-644e-40f0-ac1c-9b8dccb30af0">: this field shall contain an element of type </span></span><font style="font-family: Courier New;"><span class="requality_text id_948cc4ca-06c7-4303-83f0-599de282ce03"><span class="requality_text id_6e73abdf-644e-40f0-ac1c-9b8dccb30af0">certificate</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_948cc4ca-06c7-4303-83f0-599de282ce03"><span class="requality_text id_6e73abdf-644e-40f0-ac1c-9b8dccb30af0">.</span></span></font>
</font>
</font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">generation_time<font style="font-family: Times New Roman;">:<span class="requality_text id_092caaeb-91e9-42ce-b8a3-0b65365d4cc4"><a class="requality_id" id="id_092caaeb-91e9-42ce-b8a3-0b65365d4cc4" name="092caaeb-91e9-42ce-b8a3-0b65365d4cc4"></a><span class="requality_text id_d6ce51f8-7d7e-46fd-b53a-b4c920152e62"><a class="requality_id" id="id_d6ce51f8-7d7e-46fd-b53a-b4c920152e62" name="d6ce51f8-7d7e-46fd-b53a-b4c920152e62"></a> this field shall contain the current absolute time.</span></span> <span class="requality_text id_4de52b3b-ee3d-4ee6-a9ed-63f92efd8100"><a class="requality_id" id="id_4de52b3b-ee3d-4ee6-a9ed-63f92efd8100" name="4de52b3b-ee3d-4ee6-a9ed-63f92efd8100"></a><span class="requality_text id_b6e04816-8080-4afe-bf78-8aa8aa77f430"><a class="requality_id" id="id_b6e04816-8080-4afe-bf78-8aa8aa77f430" name="b6e04816-8080-4afe-bf78-8aa8aa77f430"></a>The </span></span><font style="font-family: Courier New;"><span class="requality_text id_4de52b3b-ee3d-4ee6-a9ed-63f92efd8100"><span class="requality_text id_b6e04816-8080-4afe-bf78-8aa8aa77f430">generation_time</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_4de52b3b-ee3d-4ee6-a9ed-63f92efd8100"><span class="requality_text id_b6e04816-8080-4afe-bf78-8aa8aa77f430"> is valid, if it is in the validity period of the certificate referenced by the </span></span><font style="font-family: Courier New;"><span class="requality_text id_4de52b3b-ee3d-4ee6-a9ed-63f92efd8100"><span class="requality_text id_b6e04816-8080-4afe-bf78-8aa8aa77f430">signer_info</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_4de52b3b-ee3d-4ee6-a9ed-63f92efd8100"><span class="requality_text id_b6e04816-8080-4afe-bf78-8aa8aa77f430">.</span></span></font>
</font>
</font>
</font>
</font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">generation_location<font style="font-family: Times New Roman;">:<span class="requality_text id_2a073aa3-6c5f-4ae4-ad78-014b5843c2fd"><a class="requality_id" id="id_2a073aa3-6c5f-4ae4-ad78-014b5843c2fd" name="2a073aa3-6c5f-4ae4-ad78-014b5843c2fd"></a><span class="requality_text id_24846e25-0161-4426-9e87-27ac10525fa0"><a class="requality_id" id="id_24846e25-0161-4426-9e87-27ac10525fa0" name="24846e25-0161-4426-9e87-27ac10525fa0"></a> this field shall contain the current location of the ITS-S at the point in time the contents of the security headers are fixed prior to the signing process</span></span>. <span class="requality_text id_7c5b569d-db35-41d9-8b40-2391399c4973"><a class="requality_id" id="id_7c5b569d-db35-41d9-8b40-2391399c4973" name="7c5b569d-db35-41d9-8b40-2391399c4973"></a><span class="requality_text id_eadacd7d-8386-4c76-8f38-0be53ce96210"><a class="requality_id" id="id_eadacd7d-8386-4c76-8f38-0be53ce96210" name="eadacd7d-8386-4c76-8f38-0be53ce96210"></a>The </span></span><font style="font-family: Courier New;"><span class="requality_text id_7c5b569d-db35-41d9-8b40-2391399c4973"><span class="requality_text id_eadacd7d-8386-4c76-8f38-0be53ce96210">generation_location</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_7c5b569d-db35-41d9-8b40-2391399c4973"><span class="requality_text id_eadacd7d-8386-4c76-8f38-0be53ce96210"> is valid, either if there is no geographic validity restriction in the certificate referenced by the </span></span><font style="font-family: Courier New;"><span class="requality_text id_7c5b569d-db35-41d9-8b40-2391399c4973"><span class="requality_text id_eadacd7d-8386-4c76-8f38-0be53ce96210">signer_info</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_7c5b569d-db35-41d9-8b40-2391399c4973"><span class="requality_text id_eadacd7d-8386-4c76-8f38-0be53ce96210">, or if it is inside the geographic validity restriction of this certificate.</span></span></font>
</font>
</font>
</font>
</font>
</font>
</li>
</p>
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">its_aid<font style="font-family: Times New Roman;">: <span class="requality_text id_43a47e59-9bb0-46ab-bcb3-2f373b450e48"><a class="requality_id" id="id_43a47e59-9bb0-46ab-bcb3-2f373b450e48" name="43a47e59-9bb0-46ab-bcb3-2f373b450e48"></a>this field shall encode the ITS-AID for DENMs according to ETSI TS 102 965</span> [<a href="REF">7</a>].</font>
</font>
</li>
</p>
</ul>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_cdc87f4d-d678-4dab-83bf-eff2d82483d8"><a class="requality_id" id="id_cdc87f4d-d678-4dab-83bf-eff2d82483d8" name="cdc87f4d-d678-4dab-83bf-eff2d82483d8"></a>None of the possible </span><font style="font-family: Courier New;"><span class="requality_text id_cdc87f4d-d678-4dab-83bf-eff2d82483d8">HeaderField</span><font style="font-family: Times New Roman;"><span class="requality_text id_cdc87f4d-d678-4dab-83bf-eff2d82483d8"> cases shall be included more than once.</span> <span class="requality_text id_6c62596c-7b03-4d58-8b8a-d91ebad153f1"><a class="requality_id" id="id_6c62596c-7b03-4d58-8b8a-d91ebad153f1" name="6c62596c-7b03-4d58-8b8a-d91ebad153f1"></a><span class="requality_text id_534d09ee-ceec-41bf-bbb4-3f9c7825da92"><a class="requality_id" id="id_534d09ee-ceec-41bf-bbb4-3f9c7825da92" name="534d09ee-ceec-41bf-bbb4-3f9c7825da92"></a>All other </span></span><font style="font-family: Courier New;"><span class="requality_text id_6c62596c-7b03-4d58-8b8a-d91ebad153f1"><span class="requality_text id_534d09ee-ceec-41bf-bbb4-3f9c7825da92">HeaderField</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_6c62596c-7b03-4d58-8b8a-d91ebad153f1"><span class="requality_text id_534d09ee-ceec-41bf-bbb4-3f9c7825da92"> types defined in clause 5 shall not be used.</span></span> Future <font style="font-family: Courier New;">HeaderField<font style="font-family: Times New Roman;"> types may be included. <span class="requality_text id_e040915f-5716-44dd-860f-886fad17008d"><a class="requality_id" id="id_e040915f-5716-44dd-860f-886fad17008d" name="e040915f-5716-44dd-860f-886fad17008d"></a>Any other </span><font style="font-family: Courier New;"><span class="requality_text id_e040915f-5716-44dd-860f-886fad17008d">HeaderField</span><font style="font-family: Times New Roman;"><span class="requality_text id_e040915f-5716-44dd-860f-886fad17008d"> types included shall not be used to determine the validity of the message.</span></font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_a6f01982-9481-4bc6-b969-d4d0faf2b71e"><a class="requality_id" id="id_a6f01982-9481-4bc6-b969-d4d0faf2b71e" name="a6f01982-9481-4bc6-b969-d4d0faf2b71e"></a><span class="requality_text id_61b388f4-8bad-4b8a-9684-eae475708a7a"><a class="requality_id" id="id_61b388f4-8bad-4b8a-9684-eae475708a7a" name="61b388f4-8bad-4b8a-9684-eae475708a7a"></a>A </span></span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_a6f01982-9481-4bc6-b969-d4d0faf2b71e"><span class="requality_text id_61b388f4-8bad-4b8a-9684-eae475708a7a">Payload</span></span></font>
</a> <span class="requality_text id_a6f01982-9481-4bc6-b969-d4d0faf2b71e"><span class="requality_text id_61b388f4-8bad-4b8a-9684-eae475708a7a">element shall be included for all DENMs. This element shall be of type </span></span><font style="font-family: Courier New;"><span class="requality_text id_a6f01982-9481-4bc6-b969-d4d0faf2b71e"><span class="requality_text id_61b388f4-8bad-4b8a-9684-eae475708a7a">signed</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_a6f01982-9481-4bc6-b969-d4d0faf2b71e"><span class="requality_text id_61b388f4-8bad-4b8a-9684-eae475708a7a"> and contain the DENM payload.</span></span></font>
</font>
</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_04dc7147-d839-4c03-b184-dd682d6f2c39"><a class="requality_id" id="id_04dc7147-d839-4c03-b184-dd682d6f2c39" name="04dc7147-d839-4c03-b184-dd682d6f2c39"></a><span class="requality_text id_c1d9965d-8c11-4b5b-af2b-42bba5482fd7"><a class="requality_id" id="id_c1d9965d-8c11-4b5b-af2b-42bba5482fd7" name="c1d9965d-8c11-4b5b-af2b-42bba5482fd7"></a>These </span></span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_04dc7147-d839-4c03-b184-dd682d6f2c39"><span class="requality_text id_c1d9965d-8c11-4b5b-af2b-42bba5482fd7">TrailerField</span></span></font>
</a> <span class="requality_text id_04dc7147-d839-4c03-b184-dd682d6f2c39"><span class="requality_text id_c1d9965d-8c11-4b5b-af2b-42bba5482fd7">elements shall be included in all DENMs:</span></span></font>
</p>
<ul style="list-style-type: disc; margin: 0in 0in 0in 0.511806in; padding: 0pt; text-indent: -0.314583in; text-align: left;">
<p class="class_37 b1+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_c2517c21-b392-47d1-920b-b97c643a3405"><a class="requality_id" id="id_c2517c21-b392-47d1-920b-b97c643a3405" name="c2517c21-b392-47d1-920b-b97c643a3405"></a><span class="requality_text id_351c77d8-92de-4bb3-991e-a3b814285a8c"><a class="requality_id" id="id_351c77d8-92de-4bb3-991e-a3b814285a8c" name="351c77d8-92de-4bb3-991e-a3b814285a8c"></a>signature</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_c2517c21-b392-47d1-920b-b97c643a3405"><span class="requality_text id_351c77d8-92de-4bb3-991e-a3b814285a8c">: this field shall contain a signature calculated over these fields of the </span></span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_c2517c21-b392-47d1-920b-b97c643a3405"><span class="requality_text id_351c77d8-92de-4bb3-991e-a3b814285a8c">SecuredMessage</span></span></font>
</a> <span class="requality_text id_c2517c21-b392-47d1-920b-b97c643a3405"><span class="requality_text id_351c77d8-92de-4bb3-991e-a3b814285a8c">data structure:</span></span></font>
</font>
</li>
</p>
</ul>
<ul style="margin: 0in 0in 0in 0.827083in; padding: 0pt; text-indent: -0.315278in; text-align: left;">
<p class="class_45 b2+"> <li class="class_36">
<font style="font-family: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_c2517c21-b392-47d1-920b-b97c643a3405"><span class="requality_text id_351c77d8-92de-4bb3-991e-a3b814285a8c">protocol_version</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_c2517c21-b392-47d1-920b-b97c643a3405"><span class="requality_text id_351c77d8-92de-4bb3-991e-a3b814285a8c">. </span></span></font>
</font>
</li>
</p>
<p class="class_44 b2+"> <li class="class_36">
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"><span class="requality_text id_c2517c21-b392-47d1-920b-b97c643a3405"><span class="requality_text id_351c77d8-92de-4bb3-991e-a3b814285a8c">The variable-length vector </span></span><font style="font-family: Courier New;"><span class="requality_text id_c2517c21-b392-47d1-920b-b97c643a3405"><span class="requality_text id_351c77d8-92de-4bb3-991e-a3b814285a8c">header_fields</span></span><font style="font-family: Times New Roman;"><span class="requality_text id_c2517c21-b392-47d1-920b-b97c643a3405"><span class="requality_text id_351c77d8-92de-4bb3-991e-a3b814285a8c"> including its length.</span></span></font>
</font>
</font>
</li>
</p>
<p class="class_44 b2+"> <li class="class_36">