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<p class="MsoNormal"><span style="mso-fareast-language:ZH-CN">Hi Martijn,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ZH-CN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ZH-CN">I agree that the language needs improvement. It might be better if the requirement was:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ZH-CN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ZH-CN">A Certificate issued after 31 March 2022 to a Subordinate CA that issues Timestamp Certificates and is an Affiliate of the Issuing CA</span><span style="mso-fareast-language:ZH-CN"> MUST include
one of the following</span><span style="mso-fareast-language:ZH-CN">:<o:p></o:p></span></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoNormal" style="mso-list:l1 level1 lfo6"><span style="mso-fareast-language:ZH-CN">T</span><span style="mso-fareast-language:ZH-CN">he CA/Browser Forum reserved identifier
</span>(2.23.140.1.4.2)<span style="mso-fareast-language:ZH-CN"> to indicate the Subordinate CA’s compliance with these Requirements</span><span style="mso-fareast-language:ZH-CN">; OR</span><span style="mso-fareast-language:ZH-CN"><o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l1 level1 lfo6"><span style="mso-fareast-language:ZH-CN">The</span><span style="mso-fareast-language:ZH-CN"> “anyPolicy” identifier (2.5.29.32.0).<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span style="mso-fareast-language:ZH-CN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ZH-CN">Does that work? If so, then maybe we should also cleanup the whole section. Also, we might also consider deleting “</span><span style="mso-fareast-language:ZH-CN">to indicate the Subordinate CA’s
compliance with these Requirements</span><span style="mso-fareast-language:ZH-CN">”.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ZH-CN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ZH-CN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ZH-CN">Thanks, Bruce.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:ZH-CN"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="mso-ligatures:none;mso-fareast-language:ZH-CN">From:</span></b><span style="mso-ligatures:none;mso-fareast-language:ZH-CN"> Cscwg-public <cscwg-public-bounces@cabforum.org>
<b>On Behalf Of </b>Martijn Katerbarg via Cscwg-public<br>
<b>Sent:</b> Wednesday, November 22, 2023 11:07 AM<br>
<b>To:</b> cscwg-public@cabforum.org<br>
<b>Subject:</b> [EXTERNAL] [Cscwg-public] MUST overridden by a MAY - Subordinate CA policies<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="SV">All,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="SV"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="SV">CSBR section 7.1.6.3 states:<o:p></o:p></span></p>
<p>”A Certificate issued to a Subordinate CA that issues Code Signing Certificates and is an Affiliate of the Issuing CA:<o:p></o:p></p>
<ol start="1" type="1">
<li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l3 level1 lfo3">
MUST include the CA/Browser Forum reserved identifier specified in <a href="https://github.com/cabforum/code-signing/blob/main/docs/CSBR.md#7161-reserved-certificate-policy-identifiers">
Section 7.1.6.1</a> to indicate the Subordinate CA's compliance with these Requirements, and<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l3 level1 lfo3">
MAY contain the "anyPolicy" identifier (<code><span style="font-size:10.0pt">2.5.29.32.0</span></code>) in place of an explicit policy identifier.<o:p></o:p></li></ol>
<p>A Certificate issued after 31 March 2022 to a Subordinate CA that issues Timestamp Certificates and is an Affiliate of the Issuing CA:<o:p></o:p></p>
<ol start="1" type="1">
<li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l4 level1 lfo10">
MUST include the CA/Browser Forum reserved identifier specified in <a href="https://github.com/cabforum/code-signing/blob/main/docs/CSBR.md#7161-reserved-certificate-policy-identifiers">
Section 7.1.6.1</a> to indicate the Subordinate CA’s compliance with these Requirements, and<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l4 level1 lfo10">
MAY contain the “anyPolicy” identifier (<code><span style="font-size:10.0pt">2.5.29.32.0</span></code>) in place of an explicit policy identifier.”<o:p></o:p></li></ol>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I find there’s a few issues with this:<o:p></o:p></p>
<ul type="disc">
<li class="MsoListParagraph" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:0in;mso-list:l6 level1 lfo9">
“MUST include the CA/Browser Forum reserved identifier specified in <a href="https://github.com/cabforum/code-signing/blob/main/docs/CSBR.md#7161-reserved-certificate-policy-identifiers">
Section 7.1.6.1</a>”, seems to state there’s only one policy OID to use, while in fact there are 3 in the named section, 2 which are for code signing certificates. This is a minor issue though and could be fixed in a cleanup ballot.<o:p></o:p></li><li class="MsoListParagraph" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:0in;mso-list:l6 level1 lfo9">
More concerning I find the MUST and MAY language. If we take the language related to CA Certificates for Code Signing Certificates, what does this language actually state? Should this be interpreted as:<o:p></o:p></li><ul type="circle">
<li class="MsoListParagraph" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:0in;mso-list:l6 level2 lfo9">
MUST include a CABF OID and MAY additionally contain the “anyPolicy” OID.<br>
or does it state:<o:p></o:p></li><li class="MsoListParagraph" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:0in;mso-list:l6 level2 lfo9">
MUST include either a CABF OID or the “anyPolicy” OID?<o:p></o:p></li></ul>
</ul>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I would like to think the intent here is to allow CA Certificates with just the “anyPolicy” OID, but at the same time, a MAY overriding a MUST, seems counterproductive.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Any thoughts on this?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Regards,<br>
<br>
Martijn<o:p></o:p></p>
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