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Hi Dr. Wang,<br class="">
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<div class="">How do you know "<span style="font-family: verdana, sans-serif;" class="">the recipient</span><span style="font-family: verdana, sans-serif;" class=""> </span>
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should</div>
<span style="font-family: verdana, sans-serif;" class=""> check if the interest's signing key is finally signed by an</span><span style="font-family: verdana, sans-serif;" class=""> </span>
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administrator's</div>
<span style="font-family: verdana, sans-serif;" class=""> signing key in order to reject unauthorized commands</span>
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.“? What checking is needed depends on the trust model. What’s the trust model here?</div>
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<div>Under specific scenarios whether the recipient should do the checking is up to the designer’s decision. I’m possibly wrong, but NFD is making decision for the recipients about which signing key the command interest is signed with should be trusted. Why
isn’t that limiting the possibilities of designs? And why is that necessary? </div>
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<div style="font-family:verdana,sans-serif" class="">So what's the purpose of the NFD's default signing key? Why should the app use this key
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to initialize its identity</div>
? Note the NFD's default signing key is not signed by anyone
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[2].</div>
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The line you are referring to doesn’t seem to be relevant to "<span style="font-family: verdana, sans-serif;" class="">the NFD's default signing key is not signed by anyone</span>
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“.</div>
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<div>The line is generating a new key and that key looks like a self-signed key or unsigned key. I believe this is what the article I was citing means. My question about this is in the next line. </div>
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<div style="font-family:verdana,sans-serif" class="">If it is also
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for</div>
defend
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against unauthorized command interests, then any local app, including possible malwares, can also use this key to sign their interest by simply using the default keychain.</div>
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The assumption is that local apps are trusted if they are allowed to run. There needs to be checking before they are launched. The secure launcher part is not implemented (or designed) yet.</div>
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<div>Then is it right to say that unless the secure launcher is a fully automatic one which makes no mistakes, the user will be involved in deciding trusted apps instead of the protocol or the service providers? </div>
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<div>I understand now it can be used to by default deny forwarding all remote command interests. </div>
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<div>Thank you. </div>
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<div class="">Lan</div>
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<div style="font-family:verdana,sans-serif" class="">If not, what other purpose could it be? <br class="">
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<div style="font-family:verdana,sans-serif" class="">[1] <a href="https://redmine.named-data.net/projects/application-development-documentation-guides/wiki/Using_Client_Libraries_with_NDNx_vs_NDNx-TLV_vs_NFD#Using-registerPrefix-with-NFD" target="_blank" class="">
https://redmine.named-data.<wbr class="">net/projects/application-<wbr class="">development-documentation-<wbr class="">guides/wiki/Using_Client_<wbr class="">Libraries_with_NDNx_vs_NDNx-<wbr class="">TLV_vs_NFD#Using-<wbr class="">registerPrefix-with-NFD</a></div>
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<div class="gmail_default" style="font-family:verdana,sans-serif">[2] <a href="https://github.com/named-data/NFD/blob/master/tools/nfd-start.sh#L42" class="">
https://github.com/named-data/NFD/blob/master/tools/nfd-start.sh#L42</a> </div>
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<div style="font-family:verdana,sans-serif" class="">Thank you. <span style="color:rgb(136,136,136)" class=""></span></div>
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<div class="">Regards,</div>
<div class="">Lei
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Pi</div>
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University of Memphis</div>
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