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$\begingroup$ I read the RFC as strongly implying certificates that are not trust anchors must be provided. Per RFC 8446, p4.4.2 Certificate : "a certificate that specifies a trust anchor MAY be omitted from the chain, provided that supported peers are known to possess any omitted certificates" ONLY "trust anchors" may be omitted. Which strongly implies certificates that are not trust anchors MAY NOT be omitted, to use the RFC's own capitalization style. The RFC certainly could be worded better here. $\endgroup$

Andrew Henle
– Andrew Henle

2026-03-31 17:54:17 +00:00
Commented 11 hours ago

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