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<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786185">5.4<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_headerfield">HeaderField</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" />HeaderFieldType 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 generation_time:</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" />Time64<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" />
<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" />generation_time;</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 generation_time_standard_deviation:</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" />Time64WithStandardDeviation<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" />generation_time_with_standard_deviation;</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 expiration:</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" />
<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" />expiry_time;</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 generation_location:</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" />ThreeDLocation<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" />generation_location;</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 request_unrecognized_certificate:</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" />HashedId3<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" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />digests<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:</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" />
<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;</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 signer_info:</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" />SignerInfo<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" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />signer;</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_parameters:</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" />EncryptionParameters<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" />enc_params;</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 recipient_info:</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" />RecipientInfo<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" />recipients<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" />
<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_header<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;">} HeaderField;</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 information of interest to the security layer. Its content depends 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;">generation_time<font style="font-family: Times New Roman;">: <span class="requality_text id_615b41cb-6660-41b4-8375-b658436ca1df"><a class="requality_id" id="id_615b41cb-6660-41b4-8375-b658436ca1df" name="615b41cb-6660-41b4-8375-b658436ca1df"></a>a timestamp of type </span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_615b41cb-6660-41b4-8375-b658436ca1df">Time64</span></font>
</a>,<span class="requality_text id_615b41cb-6660-41b4-8375-b658436ca1df"> which shall describe the point in time, when the contents of the security headers are fixed prior to the signing process</span>.</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_standard_deviation<font style="font-family: Times New Roman;">: a timestamp of type Time64WithStandardDeviation, which shall describe the point in time, when the contents of the security headers are fixed prior to the signing process. In addition to the timestamp, the confidence described by the standard deviation of the time value contained 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;">expiration<font style="font-family: Times New Roman;">: the point in time the validity of this message expires 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;">generation_location<font style="font-family: Times New Roman;">: the location where this message was created contained in a <a href="type">
<font style="font-family: Courier New;">ThreeDLocation</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;">request_unrecognized_certificate<font style="font-family: Times New Roman;">: a request for certificates shall be given in case that a certificate from a peer has not been transmitted before. This request consists of a variable-length vector of 3 octet long certificate digests contained in a <a href="type">
<font style="font-family: Courier New;">HashedId3</font>
</a> structure to identify the requested certificates. The request shall be used to request pseudonym certificates and authorization authority certificates.</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;">: The ITS-AID of the application payload shall be given. The valid ITS-AIDs are specified 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;">Furthermore, the <font style="font-family: Courier New;">HeaderField<font style="font-family: Times New Roman;"> structure defines cryptographic information that is required for single-pass processing of the payload:</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;">signer_info<font style="font-family: Times New Roman;">: information about the message's signer contained in a <a href="type">
<font style="font-family: Courier New;">SignerInfo</font>
</a> structure shall be given. If present, the SignerInfo structure shall come first in the array of <font style="font-family: Courier New;">HeaderFields<font style="font-family: Times New Roman;">, unless this is explicitly overridden by the security profile.</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;">encryption_parameters<font style="font-family: Times New Roman;">: additional parameters necessary for encryption purposes contained in an <a href="type">
<font style="font-family: Courier New;">EncryptionParameters</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;">recipient_info<font style="font-family: Times New Roman;">: information specific for certain recipients (e.g. data encrypted with a recipients public key) contained in a variable-length vector of type <a href="type">
<font style="font-family: Courier New;">RecipientInfo</font>
</a> shall be given. Each <font style="font-family: Courier New;">recipient_info<font style="font-family: Times New Roman;"> vector shall be preceeded by one <font style="font-family: Courier New;">encryption_parameters<font style="font-family: Times New Roman;"> header field to determine the value of <font style="font-family: Courier New;">symm_key_len<font style="font-family: Times New Roman;"> according to table <a href="ref">4</a>.</font>
</font>
</font>
</font>
</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;">For extensibility, the structure contains a variable field:</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;">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 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" />The <font style="font-family: Courier New;">generation_time_standard_deviation<font style="font-family: Times New Roman;"> and the <font style="font-family: Courier New;">expiration<font style="font-family: Times New Roman;"> header fields are currently unused in the security profiles in clause 7.</font>
</font>
</font>
</font>
</font>
</p>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786186">5.5<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_headerfieldtype">HeaderFieldType</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" />generation_time(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" />generation_time_standard_deviation(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" />expiration(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" />generation_location(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" />request_unrecognized_certificate(4),</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(5),</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" />signer_info(128),</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_parameters(129),</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" />recipient_info(130),</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;">} HeaderFieldType;</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 supported types of header fields.</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="_Toc421786187">5.6<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
</a>
<a id="type_securityfield">TrailerField</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" />TrailerFieldType<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" />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 signature:</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" />Signature<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" />signature;</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" />unkown:</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" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />security_field<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;">} TrailerField;</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 information used by the security layer after processing the payload. A trailer field may contain data of the following cases:</font>
</p>
<ul style="list-style-type: disc; margin: 0in 0in 0in 0.447222in; padding: 0pt; text-indent: -0.25in; text-align: left;">
<p class="class_42 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;">signature<font style="font-family: Times New Roman;">: the signature of this message contained in a <a href="type">
<font style="font-family: Courier New;">Signature</font>
</a> structure shall be given. The signature is calculated over the hash of the encoding of all previous fields (<font style="font-family: Courier New;">version<font style="font-family: Times New Roman;">, <font style="font-family: Courier New;">header_fields<font style="font-family: Times New Roman;"> field and the <font style="font-family: Courier New;">payload_field<font style="font-family: Times New Roman;"> field), including the encoding of their length. Also the length of the <font style="font-family: Courier New;">trailer_fields<font style="font-family: Times New Roman;"> field and the type of the <font style="font-family: Courier New;">signature<font style="font-family: Times New Roman;"> trailer field shall be included in the hash.<br />
<br />If the <font style="font-family: Courier New;">payload_field<font style="font-family: Times New Roman;"> field has <font style="font-family: Courier New;">type<font style="font-family: Times New Roman;"> equal to <font style="font-family: Courier New;">signed_external<font style="font-family: Times New Roman;">, the data shall be included in the hash calculation immediately after the <font style="font-family: Courier New;">payload_field<font style="font-family: Times New Roman;"> field, encoded as an <font style="font-family: Courier New;">opaque<var><font style="font-family: Times New Roman;">, i.e. as if it was included.<br />
<br />If further trailer fields are included in a <font style="font-family: Courier New;">SecuredMessage<font style="font-family: Times New Roman;">, the <font style="font-family: Courier New;">signature<font style="font-family: Times New Roman;"> structure shall include all fields in the sequence before, and exclude all fields in the sequence after the <font style="font-family: Courier New;">signature<font style="font-family: Times New Roman;"> structure, if not otherwise defined via security profiles.</font>
</font>
</font>
</font>
</font>
</font>
</font>
</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_43 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;">If the <font style="font-family: Courier New;">payload_field<font style="font-family: Times New Roman;"> field <font style="font-family: Courier New;">type<font style="font-family: Times New Roman;"> does not contain the keyword "<font style="font-family: Courier New;">signed<font style="font-family: Times New Roman;">" (<font style="font-family: Courier New;">unsecured<font style="font-family: Times New Roman;"> or <font style="font-family: Courier New;">encrypted<font style="font-family: Times New Roman;">), then the <font style="font-family: Courier New;">trailer_fields<font style="font-family: Times New Roman;"> field of the <font style="font-family: Courier New;">SecuredMessage<font style="font-family: Times New Roman;"> shall not include a <a href="type">
<font style="font-family: Courier New;">Signature</font>
</a>.</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</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;">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="_Toc421786188">5.7<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_securityfieldtype">TrailerFieldType</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" />signature(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" />(2^8-1)</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} TrailerFieldType;</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 supported types of trailer fields.</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="_Toc421786189">5.8<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_recipientinfo">RecipientInfo</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" />HashedId8<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" />
<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />cert_id;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"> PublicKeyAlgorithm<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" />
<a id="recipientinfo_publickeyalgorithm_param">pk_encryption</a>;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"> select (pk_encryption) {</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"> case ecies_nistp256:</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"> EciesEncryptedKey<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" />enc_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" />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" />
<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" />enc_key<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;">} RecipientInfo;</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 contains information for the decryption of a message for a recipient. This information is used to distribute recipient specific data. <font style="font-family: Courier New;">cert_id<font style="font-family: Times New Roman;"> determines the 8 octet identifier for the recipient's certificate. Depending on the value of <font style="font-family: Courier New;">pk_encryption<font style="font-family: Times New Roman;">, the following additional data shall be given:</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: Courier New; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">ecies_nistp256<font style="font-family: Times New Roman;">: an encrypted key contained in an <a href="type">
<font style="font-family: Courier New;">EciesEncryptedKey</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 encoding an encrypted key 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" />Except naming of included type<font style="font-family: Courier New;"> PublicKeyAlgorithm<font style="font-family: Times New Roman;"> and full inclusion of <font style="font-family: Courier New;">pk_encryption<font style="font-family: Times New Roman;"> (not <font style="font-family: Courier New;">extern<font style="font-family: Times New Roman;">), this definition is identical to the one in IEEE 1609.2 Draft D12 [<a href="REF">i.2</a>], clause 6.2.24.</font>
</font>
</font>
</font>
</font>
</font>
</font>
</p>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786190">5.9<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_eciesnistp256encryptedkey">EciesEncryptedKey</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" />extern SymmetricAlgorithm<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="eciestnistpparam_symm_alg">symm_alg</a>;</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" />extern uint32<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" />symm_key_len;</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" />EccPoint<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" /> v;</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" />
<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" />c[symm_key_len];</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" />
<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" />t[16];</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} EciesEncryptedKey;</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 transmit an ECIES-encrypted symmetric key as defined in IEEE <br />Std 1363a‑2004 [<a href="REF">i.1</a>]. The <a href="type">
<font style="font-family: Courier New;">EccPoint</font>
</a> <font style="font-family: Courier New;">v<font style="font-family: Times New Roman;"> contains the sender's ECC <font style="font-family: TimesNewRomanPSMT;">ephemeral<font style="font-family: Times New Roman;"> key used for the Elliptic Curve Encryption Scheme. This ephemeral key <font style="font-family: Courier New;">v<font style="font-family: Times New Roman;"> shall only be used once and for every encryption a new key shall be generated. The vector <font style="font-family: Courier New;">c<font style="font-family: Times New Roman;"> contains the encrypted (AES) key. The vector <font style="font-family: Courier New;">t<font style="font-family: Times New Roman;"> contains the authentication tag. The <font style="font-family: Courier New;">symm_key_len<font style="font-family: Times New Roman;"> defines the length of vector <font style="font-family: Courier New;">c<font style="font-family: Times New Roman;"> containing the encrypted (AES) key and shall be derived from the given algorithm <font style="font-family: Courier New;">symm_alg<font style="font-family: Times New Roman;"> and the mapping as defined in table <a href="ref">4</a>. The necessary algorithm shall be given as an external link to the parameter <a href="encryptionparameters">
<font style="font-family: Courier New;">symm_algorithm</font>
</a> specified in the structure <a href="type">
<font style="font-family: Courier New;">EncryptionParameters</font>
</a>. To ensure the external link to the <a href="type">
<font style="font-family: Courier New;">SymmetricAlgorithm</font>
</a> <a href="eciestnistpparam">
<font style="font-family: Courier New;">symm_alg</font>
</a> can be resolved, this <a href="type">
<font style="font-family: Courier New;">EciesEncryptedKey</font>
</a> structure shall be preceded by an according <a href="type">
<font style="font-family: Courier New;">EncryptionParameters</font>
</a> structure.</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</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;">Further parameters used for the encryption and decryption using ECIES shall be:</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_35 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;">The parameters P</font>
<font style="font-size: 6pt; vertical-align: sub;">1</font>
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"> and P</font>
<font style="font-size: 6pt; vertical-align: sub;">2</font>
<font style="font-family: Times New Roman; font-size: 10pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;"> shall be empty strings.</font>
</li>
</p>
<p class="class_35 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;">ECSVDP-DHC shall be used as secret value derivation primitive.</font>
</li>
</p>
<p class="class_35 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;">The stream cipher used shall be based on KDF2 using SHA-256.</font>
</li>
</p>
<p class="class_35 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;">As MAC, MAC1 shall be used with SHA-256 and tBits = 128.</font>
</li>
</p>
<p class="class_35 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;">The length of the key (input) to MAC1 shall be 256 bits.</font>
</li>
</p>
<p class="class_35 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;">The encryption shall use non-DHAES mode.</font>
</li>
</p>
<p class="class_35 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;">Octet strings shall be interpreted using LSB compressed representation or uncompressed representation for the ECC points.</font>
</li>
</p>
</ul>
<p class="class_29">
<table style="border-collapse: collapse; border-spacing: 0pt;">
<tbody>
<tr style="height: 0in;"> <td colspan="2" style="border-bottom: 1px solid black; width: 4.17431in;">
<p class="class_29">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Table <font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">: Derivation of symmetric key size depending on the used algorithm</font>
</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 2.20556in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">SymmetricAlgorithm value</font>
</p>
</td> <td style="border: 1px solid black; width: 1.96875in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Length in octets</font>
</p>
</td>
</tr>
<tr style="height: 0in;"> <td style="border: 1px solid black; width: 2.20556in;">
<p class="class_30">
<font style="font-size: 9pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">aes_128_ccm</font>
</p>
</td> <td style="border: 1px solid black; width: 1.96875in;">
<p class="class_17">
<font style="font-size: 9pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">16</font>
</p>
</td>
</tr>
</tbody>
</table>
</p>
<p class="class_5"></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 identical to the one in IEEE 1609.2 Draft D12 [<a href="REF">i.2</a>], clause 6.2.25.</font>
</p>
<h1 class="class_24">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786191">6<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />Specification of certificate format</a>
</font>
</h1>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786192">6.1<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_certificate">Certificate</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" />uint8<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" />version; </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" />SignerInfo<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" />signer_info;</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" />SubjectInfo<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" />subject_info;</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" />SubjectAttribute<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" />subject_attributes<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" />ValidityRestriction<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" />validity_restrictions<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" />Signature<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" />signature;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} Certificate;</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 certificate. </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_1e5c73cf-ad2e-479f-8fda-5fa62efbe3ec"><a class="requality_id" id="id_1e5c73cf-ad2e-479f-8fda-5fa62efbe3ec" name="1e5c73cf-ad2e-479f-8fda-5fa62efbe3ec"></a>version</span><font style="font-family: Times New Roman;"><span class="requality_text id_1e5c73cf-ad2e-479f-8fda-5fa62efbe3ec"> specifies this certificate's version and shall be set to </span><font style="font-family: Courier New;"><span class="requality_text id_1e5c73cf-ad2e-479f-8fda-5fa62efbe3ec">2</span><font style="font-family: Times New Roman;"><span class="requality_text id_1e5c73cf-ad2e-479f-8fda-5fa62efbe3ec"> for conformance with the present document</span>. The <font style="font-family: Courier New;">version<font style="font-family: Times New Roman;"> shall be increased, if the standard is changed in an incompatible way, i.e. the syntax is incompatible such that older implementations cannot parse the format or the semantic has been changed significantly.</font>
</font>
</font>
</font>
</font>
</font>
</li>
</p>
<p class="class_35 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_1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3"><a class="requality_id" id="id_1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3" name="1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3"></a>Information on this certificate's signer is given </span><font style="font-family: Courier New;"><span class="requality_text id_1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3">signer_info field</span><font style="font-family: Times New Roman;"><span class="requality_text id_1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3">. The signer_info shall be of type </span><font style="font-family: Courier New;"><span class="requality_text id_1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3">self</span><font style="font-family: Times New Roman;"><span class="requality_text id_1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3">, </span><font style="font-family: Courier New;"><span class="requality_text id_1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3">certificate_digest_with_sha256</span><font style="font-family: Times New Roman;"><span class="requality_text id_1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3">, </span> <font style="font-family: Courier New;"><span class="requality_text id_1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3">certificate_digest_with_other_algorithm</span><font style="font-family: Times New Roman;"><span class="requality_text id_1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3">, or </span><font style="font-family: Courier New;"><span class="requality_text id_1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3">reserved</span><font style="font-family: Times New Roman;"><span class="requality_text id_1c90e08e-4c4e-4721-ab6e-8390fd8fd3c3">.</span></font>
</font>
</font>
</font>
</font>
</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;">subject_info<font style="font-family: Times New Roman;"> specifies information on this certificate's subject. </font>
</font>
</li>
</p>
<p class="class_35 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;">Further information on the subject is given in the variable-length vector <font style="font-family: Courier New;">subject_attributes<font style="font-family: Times New Roman;">. <span class="requality_text id_a0b07625-0f38-485c-af74-5a86d4a118a4"><a class="requality_id" id="id_a0b07625-0f38-485c-af74-5a86d4a118a4" name="a0b07625-0f38-485c-af74-5a86d4a118a4"></a>The elements in the </span><font style="font-family: Courier New;"><span class="requality_text id_a0b07625-0f38-485c-af74-5a86d4a118a4">subject_attributes</span><font style="font-family: Times New Roman;"><span class="requality_text id_a0b07625-0f38-485c-af74-5a86d4a118a4"> array shall be encoded in ascending numerical order of their </span><font style="font-family: Courier New;"><span class="requality_text id_a0b07625-0f38-485c-af74-5a86d4a118a4">type</span><font style="font-family: Times New Roman;"><span class="requality_text id_a0b07625-0f38-485c-af74-5a86d4a118a4"> value, unless this is specifically overridden by a security profile.</span> <font style="font-family: Courier New;"><span class="requality_text id_a4690788-2d8b-4791-9464-0bb84527f54b"><a class="requality_id" id="id_a4690788-2d8b-4791-9464-0bb84527f54b" name="a4690788-2d8b-4791-9464-0bb84527f54b"></a>subject_attributes</span><font style="font-family: Times New Roman;"><span class="requality_text id_a4690788-2d8b-4791-9464-0bb84527f54b"> shall not contain two entries with the same </span><font style="font-family: Courier New;"><span class="requality_text id_a4690788-2d8b-4791-9464-0bb84527f54b">type</span><font style="font-family: Times New Roman;"><span class="requality_text id_a4690788-2d8b-4791-9464-0bb84527f54b"> value.</span></font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</li>
</p>
<p class="class_35 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;">The variable-length vector <font style="font-family: Courier New;">validity_restrictions<font style="font-family: Times New Roman;"> specifies restrictions regarding this certificate's validity. <span class="requality_text id_274ddbb0-bfb4-4073-8304-ddc326713b86"><a class="requality_id" id="id_274ddbb0-bfb4-4073-8304-ddc326713b86" name="274ddbb0-bfb4-4073-8304-ddc326713b86"></a>The elements in the</span><font style="font-family: Courier New;"><span class="requality_text id_274ddbb0-bfb4-4073-8304-ddc326713b86"> validity_restrictions</span><font style="font-family: Times New Roman;"><span class="requality_text id_274ddbb0-bfb4-4073-8304-ddc326713b86"> array shall be encoded in ascending numerical order of their </span><font style="font-family: Courier New;"><span class="requality_text id_274ddbb0-bfb4-4073-8304-ddc326713b86">type</span><font style="font-family: Times New Roman;"><span class="requality_text id_274ddbb0-bfb4-4073-8304-ddc326713b86"> value, unless this is specifically overridden by a security profile. </span><font style="font-family: Courier New;"><span class="requality_text id_274ddbb0-bfb4-4073-8304-ddc326713b86">validity_restrictions</span><font style="font-family: Times New Roman;"><span class="requality_text id_274ddbb0-bfb4-4073-8304-ddc326713b86"> shall not contain two entries with the same </span><font style="font-family: Courier New;"><span class="requality_text id_274ddbb0-bfb4-4073-8304-ddc326713b86">type</span><font style="font-family: Times New Roman;"><span class="requality_text id_274ddbb0-bfb4-4073-8304-ddc326713b86"> value.</span> Each certificate shall include at least one <font style="font-family: Courier New;">validity_restriction<font style="font-family: Times New Roman;"> of type <font style="font-family: Courier New;">time_end<font style="font-family: Times New Roman;">, <font style="font-family: Courier New;">time_start_and_end<font style="font-family: Times New Roman;">, or <font style="font-family: Courier New;">time_start_and_duration<font style="font-family: Times New Roman;">.</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</font>
</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;">signature<font style="font-family: Times New Roman;"> holds the signature of this certificate signed by the responsible CA. <span class="requality_text id_8f464e0c-426a-4372-8f2f-acbf3dd444c5"><a class="requality_id" id="id_8f464e0c-426a-4372-8f2f-acbf3dd444c5" name="8f464e0c-426a-4372-8f2f-acbf3dd444c5"></a>The signature shall be calculated over the encoding of all preceding fields, including all encoded lengths.</span> If the <font style="font-family: Courier New;">subject_attributes<font style="font-family: Times New Roman;"> field contains a field of type <font style="font-family: Courier New;">reconstruction_value<font style="font-family: Times New Roman;">, the <font style="font-family: Courier New;">signature<font style="font-family: Times New Roman;"> field shall be omitted. The <font style="font-family: Courier New;">reconstruction_value<font style="font-family: Times New Roman;"> may be used for implicit certificates using ECQV [<a href="REF">i.5</a>].</font>
</font>
</font>
</font>
</font>
</font>
</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 1:<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" /><span class="requality_text id_1de82943-16f3-4be8-9c10-98ff19632d96"><a class="requality_id" id="id_1de82943-16f3-4be8-9c10-98ff19632d96" name="1de82943-16f3-4be8-9c10-98ff19632d96"></a>A certificate is considered valid if the current time is within the validity period specified in the certificate, the current region is within the validity region specified in the certificate, the type of the certificate is valid for the current type of communication, the signature, which covers all fields except the signature itself, is valid, and the certificate of the signer is valid as signer for the given certificate's type. If the certificate is self-signed, it is valid if it is stored as a trusted certificate.</span></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" />This definition differs substantially from the one in IEEE 1609.2 Draft D12 [<a href="REF">i.2</a>], clause 6.3.1.</font>
</p>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786193">6.2<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_subjectinfo">SubjectInfo</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" />SubjectType<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" />subject_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" />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" />subject_name<2^8-1>;</font>
</p>
<p class="class_31">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} SubjectInfo;</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 information about a certificate's subject. It contains the type of information in <font style="font-family: Courier New;">subject_type<font style="font-family: Times New Roman;"> and the information itself in the variable-length vector <font style="font-family: Courier New;">subject_name<font style="font-family: Times New Roman;">. <span class="requality_text id_1ba8c2fa-4a07-4747-911d-bfffe0168100"><a class="requality_id" id="id_1ba8c2fa-4a07-4747-911d-bfffe0168100" name="1ba8c2fa-4a07-4747-911d-bfffe0168100"></a>The </span><font style="font-family: Courier New;"><span class="requality_text id_1ba8c2fa-4a07-4747-911d-bfffe0168100">subject_name</span><font style="font-family: Times New Roman;"><span class="requality_text id_1ba8c2fa-4a07-4747-911d-bfffe0168100"> variable-length vector shall have a maximum length of 32 bytes.</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="_Toc421786194">6.3<img height="1" border="0" width="18" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" />
<a id="type_subjecttype">SubjectType</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" />enrollment_credential(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" />authorization_ticket(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" />authorization_authority(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" />enrollment_authority(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" />root_ca(4),</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" />crl_signer(5),</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;">} SubjectType;</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 subjects:</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_35 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;">Regular ITS stations shall use certificates containing a <a href="type">
<font style="font-family: Courier New;">SubjectInfo</font>
</a> of <a href="type">
<font style="font-family: Courier New;">SubjectType</font>
</a> <font style="font-family: Courier New;">enrollment_credential<font style="font-family: Times New Roman;"> when communicating with Enrolment CAs. <span class="requality_text id_b9e76387-9dee-4b5f-a3d8-ab512d88e8a6"><a class="requality_id" id="id_b9e76387-9dee-4b5f-a3d8-ab512d88e8a6" name="b9e76387-9dee-4b5f-a3d8-ab512d88e8a6"></a>Such certificates shall not be accepted as signers of other certificates</span><span class="requality_text id_2ea232e9-8999-4b23-a946-ac27ce63836a"><a class="requality_id" id="id_2ea232e9-8999-4b23-a946-ac27ce63836a" name="2ea232e9-8999-4b23-a946-ac27ce63836a"></a> or in regular communication by other ITS-Stations.</span> </font>
</font>
</font>
</li>
</p>
<p class="class_35 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_1d95aba3-2c2a-45a2-b40e-8f8bfe3b164d"><a class="requality_id" id="id_1d95aba3-2c2a-45a2-b40e-8f8bfe3b164d" name="1d95aba3-2c2a-45a2-b40e-8f8bfe3b164d"></a>Regular ITS stations shall use certificates containing a </span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_1d95aba3-2c2a-45a2-b40e-8f8bfe3b164d">SubjectInfo</span></font>
</a> <span class="requality_text id_1d95aba3-2c2a-45a2-b40e-8f8bfe3b164d">of </span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_1d95aba3-2c2a-45a2-b40e-8f8bfe3b164d">SubjectType</span></font>
</a> <font style="font-family: Courier New;"><span class="requality_text id_1d95aba3-2c2a-45a2-b40e-8f8bfe3b164d">authorization_ticket</span><font style="font-family: Times New Roman;"><span class="requality_text id_1d95aba3-2c2a-45a2-b40e-8f8bfe3b164d"> when communicating with other ITS-Stations</span>. <span class="requality_text id_57f67514-1422-48ef-b36e-262137eb7251"><a class="requality_id" id="id_57f67514-1422-48ef-b36e-262137eb7251" name="57f67514-1422-48ef-b36e-262137eb7251"></a>Such certificates shall not be accepted as signers of other certificates.</span></font>
</font>
</font>
</li>
</p>
<p class="class_35 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_0e9485da-3aa9-4762-aad1-c706a9468cba"><a class="requality_id" id="id_0e9485da-3aa9-4762-aad1-c706a9468cba" name="0e9485da-3aa9-4762-aad1-c706a9468cba"></a>Authorization CAs, which sign authorization tickets (pseudonyms) for ITS stations, shall use the </span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_0e9485da-3aa9-4762-aad1-c706a9468cba">SubjectType</span></font>
</a> <font style="font-family: Courier New;"><span class="requality_text id_0e9485da-3aa9-4762-aad1-c706a9468cba">authorization_authority</span><font style="font-family: Times New Roman;"><span class="requality_text id_0e9485da-3aa9-4762-aad1-c706a9468cba">.</span></font>
</font>
</font>
</li>
</p>
<p class="class_35 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;">Enrolment CAs, which sign enrolment credentials (long term certificates) for ITS stations, shall use the <a href="type">
<font style="font-family: Courier New;">SubjectType</font>
</a> <font style="font-family: Courier New;">enrollment_authority<font style="font-family: Times New Roman;">.</font>
</font>
</font>
</li>
</p>
<p class="class_35 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_afc8e021-8c93-4ae6-8138-3020574e57b5"><a class="requality_id" id="id_afc8e021-8c93-4ae6-8138-3020574e57b5" name="afc8e021-8c93-4ae6-8138-3020574e57b5"></a>Root CAs, which sign certificates of other CAs, shall use the </span><a href="type">
<font style="font-family: Courier New;"><span class="requality_text id_afc8e021-8c93-4ae6-8138-3020574e57b5">SubjectType</span></font>
</a> <font style="font-family: Courier New;"><span class="requality_text id_afc8e021-8c93-4ae6-8138-3020574e57b5">root_ca</span><font style="font-family: Times New Roman;"><span class="requality_text id_afc8e021-8c93-4ae6-8138-3020574e57b5">. </span></font>
</font>
</font>
</li>
</p>
<p class="class_35 b1+"> <li class="class_36">