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<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;mso-fareast-language:EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;mso-fareast-language:EN-US">Regarding #16: for me it would be fine to refer to the Orange Book but I am not sure about the rules. Alternatively, there could be a statement that CCSDS BPSEC is
applicable to the IPN naming scheme (old one, I suppose) and that for future naming scheme definitions in CCSDS BPSEC applicability needs to be explicitly stated. I think it is worth considering BPSEC in the multi-destination context (maybe already done and
it is just fine but I don’t really know). <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif">Felix<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Aptos",sans-serif;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-left:36.0pt"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> SIS-DTN <sis-dtn-bounces@mailman.ccsds.org>
<b>On Behalf Of </b>Jackson, Jonathan W. (MSFC-HP27)[MOSSI2] via SIS-DTN<br>
<b>Sent:</b> 20 February 2025 22:41<br>
<b>To:</b> sis-dtn@mailman.ccsds.org<br>
<b>Subject:</b> [Sis-dtn] Information Request for BPSec RIDs<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US">Hello All,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US">As I was reviewing the most recent BPSec RIDs spreadsheet uploaded to CWE there are a few that I need more information/clarification on:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l1 level1 lfo3">
<![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><b><span lang="EN-US">RID 8: Requesting that someone please provide a draft clarification or explanation for this RID:<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="1100" style="width:824.8pt;margin-left:36.0pt;border-collapse:collapse">
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">#<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">RID ID<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Reviewer Name<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Reviewer Email<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Paragraph Number<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">RID Short Title<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">From</span></b><b><span style="font-size:9.0pt;color:#343541"><o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:#343541"><o:p> </o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Discussion<o:p></o:p></span></b></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">8<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">JPL-1<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">Sky DeBaun<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black"><a href="mailto:sdebaun@jpl.nasa.gov">sdebaun@jpl.nasa.gov</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">p 2-8, para 5<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">Authentication explanation<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:#343541">"Alternatively, individual target blocks may include the Primary Block (or other blocks) as part of their Additional Authenticated Data (AAD) in either integrity or confidentiality operations.
This effectively binds a given target block to a given bundle and prevents blocks from being taken out of one bundle and included in another. Finally, the security context mechanism defined by BPSec allows for the specification"<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">Approved. Will clarify.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
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<![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><b><span lang="EN-US">RID 12: Was there a specific example that we were looking to add for digital signatures? Requesting someone please provide a draft write up:<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">#</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">RID ID</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Reviewer Name</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Reviewer Email</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Paragraph Number</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">RID Short Title</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">From</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">To<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Supporting Analysis<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black"><o:p> </o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black"><o:p> </o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Discussion<o:p></o:p></span></b></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">12<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">JPL-3b<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">Michael Pajevski<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black"><a href="mailto:michael.j.pajevski@jpl.nasa.gov">michael.j.pajevski@jpl.nasa.gov</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">2-8, para 3<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">IB / BCB Authentication Types<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">Similar to the BIB, authentication is provided through data signatures.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">Similar to the BIB, authentication can be accomplished by providing authentication data. Unlike BIB, BCB provides only cipher-based authentication using an AEAD dual-mode symmetric key algorithm,
whereas a BIB can provide authenticaiton data by using a symmetric key-based hash algorith (e.g., HMAC), a symmetric cipher-based algorithm (e.g., CMAC), and/or an asymmetric key digital signature algorithm (e.g., RSA-2048/SHA-256). ** Note: Say "and/or"
only if it is possible to use more than one algorithm in a single BIB. Else, say "or".<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">The term "digital signature" typically refers to an asymmetric cryptography approach. Therefore, using the term "signature" in association with an AEAD algorithm (which is a symmetric key algorithm)
is confusing. A better term is to say cipher-based authentication when using a symmetric key algorithm to provide authentication, <paragraph break> Using a dual-mode AEAD algorithm supports only cipher-based authentication (i.e., for BCB). For BIB, various
authentication algorithms can be used.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">X<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">"Similar to the BIB, authentication can be provided through either symmetric or asymmetric cryptographic mechanisms." Add an example to chapter 2 of a use case that employs digital signatures.
(Asymmetric key to digitally sign information…)<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
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<![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><b><span lang="EN-US">RID 16: Are we waiting for BPv7 to publish before making this change, or should we refer to the BPv7 Orange Book?<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">RID ID</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Reviewer Name</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Reviewer Email</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Paragraph Number</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">RID Short Title</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">From</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">To</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Supporting Analysis</span></b><span style="font-size:9.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Times New Roman",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:black">Discussion<o:p></o:p></span></b></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">16<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">ESA-LB-03<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">Lars Baumgaertner / Felix Flentge<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black"><a href="mailto:Lars.Baumgaertner@esa.int">Lars.Baumgaertner@esa.int</a> /
<a href="mailto:felix.flentge@esa.int">felix.flentge@esa.int</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">*<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">Applicability to non-singleton endpoints<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">Add a statement whether the specification to which naming schemes the specification is applicable.<br>
<br>
Add a statement whether the specification is applicable to non-singleton endpoint IDs.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">It is not clear whether the specification is only applicable to the IPN naming scheme (which is the only applicable naming scheme in the updated CCSDS BP Red Book) or whether it is also applicable
to other naming schemes (eg, if CCSDS defines a IMC naming scheme).<br>
IPN would mean that all endpoint ID are singletons while this may not be true for other naming schemes (and it would not be true for IMC).<br>
Allowing non-singleton endpoints may introduce additional complexity and may have an impact on interoperability testing.
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">x<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;color:black">Approved with modification. BPSec should refer to **CCSDS** (BPv7), which specifies the naming schemes supported by CCSDS. Replace reference to 9171. 9171 becomes informative reference.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US">Thanks!<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US">Very Respectfully,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><b><span lang="EN-US">Jonathan Jackson<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US">MOSSI II Systems Engineering<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
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