Re: [rtcweb] AVPF [was: Encryption mandate (and offer/answer)]

"Dan Wing" <dwing@cisco.com> Tue, 20 September 2011 23:33 UTC

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From: "Dan Wing" <dwing@cisco.com>
To: "'Tim Panton'" <tim@phonefromhere.com>
References: <A444A0F8084434499206E78C106220CA0B00FDB08B@MCHP058A.global-ad.net> <E4EC1B17-0CC4-4F79-96DD-84E589FCC4F0@edvina.net> <4E67C3F7.7020304@jesup.org> <BE60FA11-8FFF-48E5-9F83-4D84A7FBE2BE@vidyo.com> <4E67F003.6000108@jesup.org> <7F2072F1E0DE894DA4B517B93C6A05852233E8554C@ESESSCMS0356.eemea.ericsson.se> <C3759687E4991243A1A0BD44EAC8230339CA68F054@BE235.mail.lan> <CAOJ7v-2u0UuNXh7bzmZFwiSucbsh=Ps=C3ZM5M3cJrXRmZgODA@mail.gmail.com> <CAKhHsXHXCkNdjtpxCSCk+ABbtxY15GEgouE6X6-sn-LqhnidQw@mail.gmail.com> <4E6A56D4.2030602@skype.net> <CABcZeBOdP6cAqBoiSV-Vdv1_EK3DfgnMamT3t3ccjDOMfELfBw@mail.gmail.com> <CAKhHsXFdU1ZaKQF8hbsOxwTS-_RfmFqQhgzGe=K4mRp+wz+_nQ@mail.gmail.com> <4E6A81EC.3080002@jesup.org>, <4E6AE22A.2070106@alum.mit.edu> <7F2072F1E0DE894DA4B517B93C6A05852233C3B7C5@ESESSCMS0356.eemea.ericsson.se>, <4E6C16FF.1000706@jesup.org> <BBF498F2D030E84AB1179E24D1AC41D61C1BCA829D@ESESSCMS0362.eemea.ericsson.se> <4E6CB9F7.2060208@mozilla.com> <4E6DB7F4.3090404@skype.net> <09b501c c726d$66655360$332ffa 20$@com> <52B1B3C9-A5D2-473A-9A7F-FC7EE6EAD259@phonefromhere.com>
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Date: Tue, 20 Sep 2011 16:35:35 -0700
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Cc: rtcweb@ietf.org
Subject: Re: [rtcweb] AVPF [was: Encryption mandate (and offer/answer)]
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> -----Original Message-----
> From: Tim Panton [mailto:tim@phonefromhere.com]
> Sent: Thursday, September 15, 2011 2:53 AM
> To: Dan Wing
> Cc: 'Matthew Kaufman'; 'Timothy B. Terriberry'; rtcweb@ietf.org
> Subject: Re: [rtcweb] AVPF [was: Encryption mandate (and offer/answer)]
> 
> 
> On 14 Sep 2011, at 00:32, Dan Wing wrote:
> >>
> >
> > SDES is also not as secure as DTLS-SRTP, reference RFC5479.
> >
> > -d
> 
> 
> I had my mind rather forcibly changed on this by reading this:
> https://www.owasp.org/index.php/File:SSL_paved_with_good_intentions.pdf
> and
> http://www.slate.com/id/2265204/
> 
> Basically any key exchange that depends for it's security on https: is
> worthless.

DTLS-SRTP does not validate certificates at all like HTTPS.

-d


> Tim (as usual speaking for himself)
> 
> P.S. I particularly enjoyed the idea of embedding logos in X509 certs
> (seems this is valid).=