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32
</font>
</p>
<p class="class_20">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
A.2
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Example structure of a certificate
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<a href="#_Toc421786212">33</a>
33
</font>
</p>
<p class="class_23">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">
Annex B (informative):
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Usage of ITS-AID and SSPs
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<a href="#_Toc421786213">34</a>
34
</font>
</p>
<p class="class_20">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
History
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<a href="#_Toc421786214">35</a>
35
</font>
</p>
<p class="class_5"/>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">?</font>
</p>
<h1 class="class_24">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786141">Intellectual Property Rights</a>
</font>
</h1>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for</font>
<font style="font-weight: bold;">ETSI members and non-members</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
, and can be found in ETSI SR 000 314:
<font style="font-style: italic;">
"Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards"
<font style="font-style: normal;">
, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (
<a href="http://webapp.etsi.org/IPR/home.asp"/>
</font>
</font>
</font>
<font style="text-decoration: underline;">http://ipr.etsi.org</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
).
<br/>
</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document.</font>
</p>
<h1 class="class_24">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786142">Foreword</a>
</font>
</h1>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc417397696">This Technical Specification (TS) has been produced by ETSI Technical Committee Intelligent Transport Systems (ITS).</a>
</font>
</p>
<h1 class="class_24">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc417397697">Modal verbs terminology</a>
</font>
</h1>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">In the present document "</font>
<font style="font-weight: bold;">shall</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">", "</font>
<font style="font-weight: bold;">shall not</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">", "</font>
<font style="font-weight: bold;">should</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">", "</font>
<font style="font-weight: bold;">should not</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">", "</font>
<font style="font-weight: bold;">may</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">", "</font>
<font style="font-weight: bold;">need not</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">", "</font>
<font style="font-weight: bold;">will</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">", "</font>
<font style="font-weight: bold;">will not</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">", "</font>
<font style="font-weight: bold;">can</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">" and "</font>
<font style="font-weight: bold;">cannot</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
" are to be interpreted as described in clause 3.2 of the
<a href="http://portal.etsi.org/Help/editHelp%21/Howtostart/ETSIDraftingRules.aspx"/>
</font>
<font style="text-decoration: underline;">ETSI Drafting Rules</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
(Verbal forms for the expression of provisions).
<br/>
</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">"</font>
<font style="font-weight: bold;">must</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">" and "</font>
<font style="font-weight: bold;">must not</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">" are</font>
<font style="font-weight: bold;">NOT</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
allowed in ETSI deliverables except when used in direct citation.
<br/>
</font>
</p>
<h1 class="class_24">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786144">Introduction</a>
</font>
</h1>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Security mechanisms for ITS consist of a number of parts. An important part for interoperability is a common format for data elements being transferred between ITS stations for security purposes.</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">The present document intends to provide such a format definition. A special focus is to include as much as possible from existing standards. At the same time, the major goal is simplicity and extensibility of data structures.</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">?</font>
</p>
<h1 class="class_24">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786145">
1
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Scope
</a>
</font>
</h1>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">The present document specifies security header and certificate formats for Intelligent Transport Systems. These formats are defined specifically for securing G5 communication.</font>
</p>
<h1 class="class_24">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786146">
2
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
References
</a>
</font>
</h1>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786147">
2.1
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Normative references
</a>
</font>
</h2>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies.</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
Referenced documents which are not found to be publicly available in the expected location might be found at
<a href="http://docbox.etsi.org/Reference"/>
</font>
<font style="text-decoration: underline;">http://docbox.etsi.org/Reference</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
.
<br/>
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity.
<br/>
</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">The following referenced documents are necessary for the application of the present document.</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
IEEE� 1363-2000: "IEEE Standard Specifications For Public Key Cryptography".
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
NIMA Technical Report TR8350.2: "Department of Defense World Geodetic System 1984. Its Definition and Relationships with Local Geodetic Systems".
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
ISO 3166-1: "Codes for the representation of names of countries and their subdivisions -- Part 1: Country codes".
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
NIST SP 800-38C: "Recommendation for Block Cipher Modes of Operation: The CCM Mode for Authentication and Confidentiality".
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
IETF RFC 2246: "The TLS Protocol Version 1.0".
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
ETSI TS 102 940: "Intelligent Transport Systems (ITS); Security; ITS communications security architecture and security management".
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
ETSI TS 102 965 (V1.2.1): "Intelligent Transport Systems (ITS); Application Object Identifier (ITS-AID); Registration".
</font>
</p>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786148">
2.2
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Informative references
</a>
</font>
</h2>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies.</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity.
<br/>
</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area.</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[
<a id="REF_IEEE1363A_2004">i.</a>
]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
IEEE� 1363a-2004: "Standard Specifications For Public Key Cryptography - Amendment 1: Additional Techniques".
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[
<a id="REF_IEEE16092_2012">i.</a>
]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
IEEE� 1609.2-2012 (draft D12): "Wireless Access in Vehicular Environments - Security Services for Applications and Management Messages".
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[
<a id="REF_IEEE16092_2012_9">i.</a>
]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
IEEE� 1609.2-2012 (draft D17): "Wireless Access in Vehicular Environments - Security Services for Applications and Management Messages".
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[
<a id="REF_IEEE16093_2010">i.</a>
]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
IEEE� 1609.3-2010: "Wireless Access in Vehicular Environments (WAVE) - Networking Services".
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[
<a id="REF_STANDARDSFOREFFICIENTCRYPTOGRAPHY4">i.</a>
]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Standards for Efficient Cryptography 4 (SEC 4): "Elliptic Curve Qu-Vanstone Implicit Certificate Scheme (ECQV)".
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
[
<a id="REF_ANTIPAARGALLANTANDSVANSTONE">i.</a>
]
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Antipa A., R. Gallant, and S. Vanstone: "Accelerated verification of ECDSA signatures", Selected Areas in Cryptography, 12th International Workshop, SAC 2005, Kingston, ON, Canada, August 11-12, 2005: Springer, 2005, pp. 307-318.
</font>
</p>
<h1 class="class_24">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786149">
3
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Definitions and abbreviations
</a>
</font>
</h1>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc417397703">
3.1
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Definitions
</a>
</font>
<font style="font-size: 9pt; font-weight: bold;"/>
</h2>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">For the purposes of the present document, the following terms and definitions apply:</font>
</p>
<p class="class_5">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">enumeration:</font>
<font style="font-weight: normal;">set of values with distinct meaning</font>
</p>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786151">
3.2
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Abbreviations
</a>
</font>
</h2>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">For the purposes of the present document, the following abbreviations apply:</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
AES
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Advanced Encryption Standard
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
CA
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Certificate Authority
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
CAM
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Cooperative Awareness Message
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
CRL
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Certificate Revocation List
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
DENM
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Decentralized Environmental Notification Message
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
DHAES
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Diffie-Hellman: An Encryption Scheme
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
ECC
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Elliptic Curve Cryptography
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
ECDSA
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Elliptic Curve Digital Signature Algorithm
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">ECIES</font>
<font style="font-weight: bold;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
</font>
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Elliptic Curve Integrated Encryption Scheme</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
ECQV
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Elliptic Curve Qu-Vanstone
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Implicit Certificate Scheme.
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
G5
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
5,9 GHz radio communications
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
ITS
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Intelligent Transport Systems
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
ITS-AID
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
ITS Application ID
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
ITS-S
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Intelligent Transport Systems Station
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
LSB
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Least Significant Bit
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NIMA
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
National Imagery and Mapping Agency
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NIST SP
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
National Institute of Standards and Technology, Special Publication
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
PSID
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Provider Service Identifier
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
It is a synonym for ITS-AID.
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
SSP
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Service Specific Permissions
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
TAI
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Temps Atomique International (International Atomic Time)
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
TLS
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Transport Layer Security
</font>
</p>
<p class="class_28">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
UTC
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Universal Time Coordinated
</font>
</p>
<p class="class_27">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
WGS
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
World Geodetic System
</font>
</p>
<h1 class="class_24">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786152">
4
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Basic format elements
</a>
</font>
</h1>
<h2 class="class_25">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<a id="_Toc421786153">
4.1
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Presentation Language
</a>
</font>
</h2>
<p class="class_5">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
The presentation language is derived from the Internet Engineering Task Force (IETF) RFC 2246 (TLS) [
<a href="REF">5</a>
] and from IEEE 1609.2-2012 [
<a href="REF">i.2</a>
] (draft D12) and is described in table
<a href="ref">1</a>
. The encoding of multi-byte elements of the presentation language shall always use network byte order, i.e. big endian byte order, if applicable.
</font>
</p>
<p class="class_26">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
NOTE:
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
The presentation language is not formally defined. Parsing tools based on this notation cannot be guaranteed to be consistent or complete.
</font>
</p>
<p class="class_29">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">
Table :
<a id="tab_presentation_language">Presentation language</a>
</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: 1.46458in;">
<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: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Description</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_30">
<font style="font-style: normal; font-weight: bold; text-decoration: none; vertical-align: baseline;">Example(s)</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Variable names</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Variable names are given in lower case</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">variable_name</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Basic data types</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Basic data types are given in lower case</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">uint8, uint16, uint32, uint64</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Composed data types</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Composed data types are given with at least the first letter in upper case</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">MyDataType</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Comments</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Comments start with the "//" indicator</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">// This is a comment</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Numbers</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Numbers are given as signed or unsigned big-endian octets</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">uint8, uint16, uint32, uint64, sint32</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Fixed-length vectors</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Fixed-length vectors have a data type and a fixed octet size given in square brackets</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">uint8 Coordinates[2];</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">// two uint8 values</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">uint32 Coordinates[8];</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">// two uint32 values</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Variable-length vectors with fixed-length length encoding</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">The number in angle brackets gives the maximum number of octets. Depending on the maximum size, the first 1 byte, 2 bytes, 4 bytes or 8 bytes encode the actual field length</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">uint8 AsciiChar;</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">AsciiChar Name<2^8-1>;</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">// "abc" encoded as</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">// 0x03, 0x61, 0x62, 0x63</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">AsciiChar LongName<2^16-1>;</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">// "abc" encoded as</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">// 0x00, 0x03, 0x61, 0x62, 0x63</font>
</p>
</td>
</tr>
<tr style="height: 1.96667in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Variable-length vectors with variable-length length encoding</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<var> indicates variable-length encoding. The length itself is encoded with a number of "1" bits according to the additional number of octets used to encode the length, followed by a "0" bit and the actual length value. The maximum length shall be 2
<font style="font-size: 5pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: super;">
56
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">- 1, i.e. at most seven "1" bits followed by a "0" bit shall be used for the variable-length length encoding. The length of variable-length vectors with variable-length length encoding shall be encoded as positive integer using the minimum number of bits necessary</font>
</font>
</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">uint8 AsciiChar;</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">AsciiChar Name<var>;</font>
</p>
<p class="class_31"/>
<p class="class_32">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
// encoding examples: (the bits with // grey background represent the
<br/>
// length encoding of the vector's
<br/>
// length, X the first of the // vector's following payload bits)
</font>
</p>
<p class="class_32">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
// Vector length 5:
<br/>
// Bits:
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
0
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">0000101 XXXXXXXX XXXXXXXX</font>
</font>
</font>
</p>
<p class="class_32">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
// Vector length 123:
<br/>
// Bits:
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
0
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">1111011 XXXXXXXX XXXXXXXX</font>
</font>
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
// Vector length 388:
<br/>
// Bits:
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
10
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">000001 10000100 XXXXXXXX</font>
</font>
</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Opaque fields</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Opaque fields are blocks of data whose content interpretation is not further specified</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">opaque fieldname[n];</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">opaque fieldname<n>;</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">opaque fieldname<var>;</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Enumerations</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Enumerations are list of labels with a unique value for each label, and optionally a maximum value (which then determines length of encoding)</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">enum {de(0), fr(1), it(2)} Country;</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">enum {de(0), fr(1), it(2), (2^8-1)} Country;</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">// both variants encoding in one</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">// octet</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">enum {de(0), fr(1), it(2), (2^16-1)} Country;</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">// Encoding in two octets</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Constructed types</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Constructed types contain other types</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">struct {</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Name name;
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Country country;
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} Person;</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Case statements</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">Case statements are used inside constructed types to change the contents of the constructed type depending on the value of the variable given in brackets</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">struct {</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Name name;
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Country country;
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
select(country) {
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
case de:
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
uint8 age;
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
case fr:
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
AsciiChar given_name<2^8-1>;
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
}
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">} Person;</font>
</p>
</td>
</tr>
<tr style="height: 0in;">
<td style="border: 1px solid black; width: 1.46458in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">External data</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.55in;">
<p class="class_30">
<font style="font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">This is external data that has impact on a struct, e.g. in a select statement. It shall be described from where the external data is obtained</font>
</p>
</td>
<td style="border: 1px solid black; width: 2.67917in;">
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">struct {</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
Name name;
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
extern Country country;
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
select(country) {
</font>
</p>
<p class="class_31">
<font style="font-family: Courier New; font-size: 8pt; font-style: normal; font-weight: normal; text-decoration: none; vertical-align: baseline;">
<img border="0" height="1" src="data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs%3D" width="18"/>
case de:
</font>