Subject: [Sip-security] S/MIME usage

From: [email-masked]
Date: Fri, 31 May 2002 15:39:12 -0400

Hi,

I've been studying S/MIME usage in SIP from the bis 09 draft. I have this question, if a UAC sends an S/MIME message to the UAS, who cannot verify the sender's certificate, what response should the UAS send back to the UAC? Should it be a 403 Forbidden? How can the UAS notify the UAC that the certificate cannot be verified?

Thanks!

-Tat

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